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Tacticity-Isotactic, syndiotactic, Atactic Polymer-Engineering Chemistry-1 Notes(CY6151)
 
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Anna University Engineering Chemistry Notes-1(CY6151) Unit-1 Polymer Chemistry Properties of Polymer Stereospecific Polymer or Tacticity Isotactic, Syndiotactic and Atactic Polymer
Views: 12064 vijaya rajadurai
Tacticity and Coordination Polymerization
 
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TACTICITY AND COORDINATION POLYMERIZATION There are three types of Polymers which depends on special arrangement on groups which are in making of Polymers: 1) Isotactic Polymers 2) Syndiotactic Polymers 3) Atactic Polymers
Views: 10334 vedupro
Polymers - Crash Course Chemistry #45
 
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You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. Did you know that Polymers save the lives of Elephants? Well, now you do! The world of Polymers is so amazingly integrated into our daily lives that we sometimes forget how amazing they are. Here, Hank talks about how they were developed an the different types of Polymers that are common in the world today, including some that may surprise you. -- Table of Contents Commercial Polymers & Saved Elephants 0:00 Ethene AKA Ethylene 2:29 Addition Reactions 3:08 Ethene Based Polymers 4:44 Addition Polymerization & Condensation Reactions 6:32 Proteins & Other Natural Polymers 8:33 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1000950 CrashCourse
A.5 Isotactic and atactic polymers (SL)
 
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Understandings: Isotactic addition polymers have substituents on the same side. Atactic addition polymers have the substituents randomly placed.
Views: 1138 Mike Sugiyama Jones
Organic Addition Polymers 2. Production of HDPE
 
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Top Tutors for All Subjects at All Levels here: https://spires.co/franklychemistry This short video takes a relatively simplistic look at the action of a Zeigler-Natta catalyst in the production of High Density Polyethene (HDPE). HDPE molecules have little branching, resulting in a more crystalline structure and higher melting temperature.
Views: 15654 FranklyChemistry
Polypropylene
 
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Polypropylene Polypropylene enjoys wide application in technology engineering. This is a synthetic thermoplastic non-polar polymer classified as polyolefin. It is the product of propylene polymerization. Polypropylene is a solid white material with the chemical formula of C3H6. Propylene polymerization results in polypropylene linear molecule whose building blocks include -CH2-CH- bond with CH3 methyl side group. According to the methyl group position in the polymer chain, polypropylenes fall under: atactic polypropylenes whose methyl groups are located randomly at both sides of the polymer chain; syndiotactic polypropylenes whose groups have alternate positions along the chain; and isotactic polypropylenes whose all methyl groups are located on the same side of the polymer chain. Such polypropylenes are 50% more rigid and 25% harder than atactic polypropylenes. Polypropylene's physical, chemical, mechanical and electric properties greatly depend on the macromolecular structure. Polypropylene is marked as double-P both in Cyrillic and Latin alphabet. Polypropylene is a plastic material demonstrating high impact and cross-breaking strength. It is wear-resistant and has good electric insulation properties within wide temperature ranges. It is also chemically stable and water-resistant. Polypropylene products are manufactured based on all thermoplastic material processing technologies. Polypropylene finds wide application in the industry. It is used to produce packaging and car components, case works and pipelines. It is also widely used in electronic engineering. Polypropylene is used to produce packages to a lesser extent, however, than polystyrene and ABS resins. But unlike the latter, polypropylene packages can stand load impacts and are more resistant to abrasion damages. That's why they can be used under unfavorable environment. Polypropylene is used as a dielectric material in capacitors, for instance, in Russian K78-2 capacitors or as electric insulation. Recently, polypropylene has earned a great deal of popularity as internal insulators in high-voltage cables and has become a good substitute for polyethylene.
Views: 21636 ChipDipvideo
Atom transfer radical polymerization (ATRP)
 
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This video gives a brief introduction to the widely used chemical polymerization technique atom transfer radical polymerization (ATRP). First, a small introduction of its origin is presented followed by explaining the mechanism of ATRP. After this video, you should have a fundamental understanding of ATRP which enables you to start working with ATRP in the laboratory.
Views: 949 Stefan Nielsen
Polymerization mechanism with alkene addition Reaction #7
 
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The mechanism of alkene addition polymerization using an acid catalyst is worked out. Additionally examples of polymer and monomers are shown to show the connection between a styrene and a polystyrene structural representation as well as polyethene + ethene and polyvinyl chloride and vinyl chloride. More reaction mechanisms and organic chemistry/IB chemistry resources can be found here: https://sites.google.com/site/thechemistrytranslator/chemistry---milam-plymouth/ib-chem-milam-hl
Views: 5656 Scott Milam
Polymerization POLYPROPYLENE
 
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จัดทำโดย นางสาว ศิริธรฑ์ นาดี รหัส115610400397-4 POE56147 เสนอ ผศ.ดร. สมหมาย ผิวสอาด รายวิชา Polymerization Processing
Recrystallization of polypropylene in polystyrene / polypropylene blend
 
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A blend of polystyrene (PS) and polypropylene (PP) was heated to 140°C to melt the syndiotactic PP and then cooled at a constant rate while imaging at one frame per minute. As the sample cools, the continuous PP phase first nucleates and then forms partly ordered, semicrystalline regions. Some of the regions form on top of the PS spherical domains. Imaged with the Cypher ES AFM; scan size 4 μm.
Views: 978 AsylumResearchVideo
Polyolefins: After Free Radicals, Ziegler-Natta and Metallocenes.| Brian Goodall
 
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The 3rd Saudi International Petrochemical Technologies Conference 2015 5th - 6th May, 2015 / 16th - 17th Rajab 1436H King Abdulaziz City for Science and Technology (KACST), Riyadh, KSA The 3rd Saudi International Petrochemical Technologies Conference 2015 is the most important event in the Kingdom of Saudi Arabia (KSA) for those involved in the Petrochemical Technology transfer and development. The conference will take place in Riyadh, Saudi Arabia on 5th and 6th May, 2015. The conference will bring together many of experts over the world to share their most innovative ideas and best practice in field of catalysis, refining and petrochemical technologies. The key areas of focus at the conference include: Downstream Petrochemical Industries: Challenges and Opportunities, Novel Approaches to Natural Gas Utilization, Sustainable Technologies in Petrochemicals, Advances in Petrochemical Catalysis, Added-Value Polymers through Innovative Petrochemicals Synthesis, Advanced Catalysis in Petroleum Refinery and New Strategies for Heavy Oil Upgrading. Keynote lecture 2 Polyolefins: After Free Radicals, Ziegler-Natta and Metallocenes. What are the Next Generations of Commercial Polymers and Catalysts? Brian Goodall, Vice President, Valicor, United States of America المؤتمر السعودي الدولي الثالث لتقنيات البتروكيماويات 2015 5 - 6 مايو 2015
Views: 1077 Kacst
64- Ethylene polymerization
 
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Ethylene polymerization: initiation, propagation and termination of polyethylene
Polymer Molecular Weight
 
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Calculates the number average and the weight average molecular weight from a polymer molecular weight distribution. Made by faculty at the University of Colorado Boulder Department of Chemical and Biological Engineering. Check out our Materials Science playlist at http://www.youtube.com/playlist?list=PLC9CE6BFBB0D003CD
Views: 61483 LearnChemE
Polypropylene
 
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This video describes polypropylene structures, its production methods, properties and applications
Mod-08 Lec-02 Polymers:Polyolefins,Polyethylene,Polypropylene Polystyrene
 
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Chemical Technology - I by Dr. I.D.Mall,Department of Chemical Engineering,IIT Roorkee.For more details on NPTEL visit http://nptel.ac.in
Views: 4405 nptelhrd
Melting and recrystallization of a sPP-PS polymer film
 
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This movie shows a polymer thin film consisting of syndiotactic polypropylene (sPP) and polystyrene (PS) that was imaged as a function of changing temperature on the Cypher ES AFM using blueDrive photothermal excitation. The scan size is 3 µm and the data channel shown is phase because it shows the most contrast. The round, isolated domains are PS and the continuous matrix around them is the sPP. Note that the melting temperature of sPP is ~ 130-170°C while the melting temperature of PS is ~240°C. The movie starts with the sample at ~60°C. It is then slowly heated to ~135°C, during which time you can observe the PP crystallites melt, diminishing in size and forming a melted layer. You can actually see the high motility of the crystallites in the melt. Notably the heating is stopped before the sPP is fully melted and the sample is then slowly cooled. The remaining crystallites act as nucleation sites, recrystallizing and growing. Once the temperature has returned to 60°C, you see larger features appear. Note that the recrystallization occurs much differently if the sPP is fully melted. This case can be seen in another movie here http://www.asylumresearch.com/Gallery/Movies/Movie23.shtml.
Views: 1819 AsylumResearchVideo
202421KUPDC Gas Phase Polymerization of Ethylene
 
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ASPEN Dynamics for Gas Phase Polymerization of Ethylene
Organic Addition Polymers 2. Polyphenylethene (polystyrene).
 
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A short animation to show the addition polymerisation of phenylethene (formerly known as styrene). There is an accompanying video that shows the formation of polythene, pvc and polypropylene.
Views: 1117 FranklyChemistry
Incorporation of Ziegler–Natta catalyst components. Structures and Reactivity ... | Piotr Sobota
 
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The 3rd Saudi International Petrochemical Technologies Conference 2015 5th - 6th May, 2015 / 16th - 17th Rajab 1436H King Abdulaziz City for Science and Technology (KACST), Riyadh, KSA The 3rd Saudi International Petrochemical Technologies Conference 2015 is the most important event in the Kingdom of Saudi Arabia (KSA) for those involved in the Petrochemical Technology transfer and development. The conference will take place in Riyadh, Saudi Arabia on 5th and 6th May, 2015. The conference will bring together many of experts over the world to share their most innovative ideas and best practice in field of catalysis, refining and petrochemical technologies. The key areas of focus at the conference include: Downstream Petrochemical Industries: Challenges and Opportunities, Novel Approaches to Natural Gas Utilization, Sustainable Technologies in Petrochemicals, Advances in Petrochemical Catalysis, Added-Value Polymers through Innovative Petrochemicals Synthesis, Advanced Catalysis in Petroleum Refinery and New Strategies for Heavy Oil Upgrading. Presented: Piotr Sobota, Professor, University of Wrocław, Poland المؤتمر السعودي الدولي الثالث لتقنيات البتروكيماويات 2015 5 - 6 مايو 2015
Views: 1183 Kacst
1,2 and 1,4 addition polymerisation
 
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The mechanism of 1,2 and 1,4 addition polymerisation with 1,3 butadiene
Views: 70 Carolyn Barker
A 5.4 Polymer tacticity
 
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IB chemistry Option A: materials
Views: 1296 Rostam Afshinnekoo
Mod-01 Lec-23 Polymer Stereochemistry and Coordination Polymerization
 
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Polymer Chemistry by Dr. D. Dhara,Department of Chemistry and Biochemistry,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
Views: 4421 nptelhrd
Polymerization using Zeigler-Natta catalysis is advantageous over free radical
 
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polymerization because A..it gives highly branched with high degree of crystallinity B..it gives linear polymer molecules permitting stereochemical control C..it can lead to living polymers via anionic polymerization D..it permits step reaction polymerization resulting in a highly cross linked polymer
Views: 330 MyProgressCard
Polymerization of Alkenes|Alkene-11|
 
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Polymerization of Alkenes|Alkene-11|
Views: 173 ChemAkash
Polymeric Structure
 
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This lecture explains about the molecular weight calculation in polymers, physical states of polymer, tacticity.
Mod-01 Lec-35 Amorphous and Crystalline State : Tg and Tm
 
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Polymer Chemistry by Dr. D. Dhara,Department of Chemistry and Biochemistry,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
Views: 14889 nptelhrd
1  Polymer   Polymerisation Addition Reaction
 
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Polymer chemistry is the last topic of organic chemistry in which we have to apply some of the concepts studied in organic chemistry as well as we have to memorise some factual points.
Syndiotactic PP
 
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Views: 287 pcpainter1
Crystallinity in Polymers
 
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Crystallinity in Polymers
anionic polymerization
 
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Views: 13196 sonny -
cationic polymerization
 
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Views: 16493 sonny -
Zieglar Natta Catalyst
 
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Views: 6969 Gupta Namrata
What is ADDITION POLYMER? What does ADDITION POLYMER mean? ADDITION POLYMER meaning & explanation
 
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What is ADDITION POLYMER? What does ADDITION POLYMER mean? ADDITION POLYMER meaning - ADDITION POLYMER definition - ADDITION POLYMER explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. An addition polymer is a polymer which is formed by an addition reaction, where many monomers bond together via rearrangement of bonds without the loss of any atom or molecule under specific conditions of heat, pressure, and/or the presence of a catalyst. This is in contrast to a condensation polymer which is formed by a condensation reaction where a molecule, usually water, is lost during the formation. An addition polymer is formed by a reaction known as polyaddition or addition polymerization. This can occur in a variety of ways including free radical polymerization, cationic polymerization, anionic polymerization and coordination polymerization. Most of the common addition polymers are formed from unsaturated monomers (usually having a double bond). This includes polyethenes, polypropylene, PVC, Teflon, Buna rubbers, polyacrylates, polystyrene, and PCTFE. Addition polymers are also formed from monomers that have a closed ring. Through coordination polymerization, even saturated monomers can form addition polymers. When two or more types of monomer undergo addition polymerization, the polymer formed is known as an addition copolymer. Saran wrap, formed from polymerization of vinyl chloride and vinylidene chloride, is an addition copolymer. With exception of combustion, the backbone of addition polymers are generally chemically inert. This is due to the very strong C-C and C-H bonds and lack of polarisation within many addition polymers. For this reason they are non-biodegradable and hard to recycle. This is, again, in contrast to condensation polymers which are bio-degradable and can be recycled. Many exceptions to this rule are products of ring-opening polymerization, which tends to produce condensation-like polymers even though it is an additive process. For example, poly is chemically identical to polyethylene glycol except that it is formed by opening ethylene oxide rings rather than eliminating water from ethylene glycol. Nylon 6 was developed to thwart the patent on nylon 6,6, and while it does have a slightly different structure, its mechanical properties are remarkably similar to its condensation counterpart. One universal distinction between polymerization types is development of molecular weight by the different modes of propagation. Addition polymers form high molecular weight chains rapidly, with much monomer remaining. Since addition polymerization has rapidly growing chains and free monomer as its reactants, and condensation polymerization occurs in step-wise fashion between monomers, dimers, and other smaller growing chains, the effect of a polymer molecule's current size on a continuing reaction is profoundly different in these two cases. This has important effects on the distribution of molecular weights, or polydispersity, in the finished polymer. The first useful addition polymer was made by accident in 1933 by ICI chemists Reginald Gibson and Eric Fawcett. They were carrying out a series of experiments which involved reacting organic compounds under high temperatures and high pressures. They set up an experiment to react ethene with benzaldehyde in the hope of producing a ketone. They left the reaction vessel overnight, and the next morning they found a small amount of a white waxy solid. It was shown later that this solid was polyethylene.
Views: 1249 The Audiopedia
Anionic addition Polymerization | Hindi
 
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Hello Friends ! In this video i ll discuss about Anionic addition Polymerization in hindi. SOME RELATED VIDEOS 1.Nomenclature of Heterocyclic Compounds:-https://youtu.be/bCO4_RzhfGQ 2.IUPAC Nomenclature of Amines:-https://youtu.be/ujdEmwie7ZI 3.Oxidation Number (Part 1):-https://youtu.be/Czl8Stni0Ws 4.Oxidation Number| Part-2|:-https://youtu.be/KnYlr1f_eLE 5.Basics of Coordination Complexes:-https://youtu.be/cSAFx00qXGM 6.Naming of Coordination Complexes:-https://youtu.be/uCbNF3p3lRA 7.Isomerism in Coordination Compounds:-https://youtu.be/2kDOwQszZI8 8.Nucleophilic Substitution reactions (SN1 & SN2):-https://youtu.be/X7Zb4s3fQNw 9.Mechanism of addition polymerization :-https://youtu.be/4oV_VSd2QxU 10.Cationic addition polymerization :-https://youtu.be/TTJsBHNtodU --------------------------------------------------------------------------- FEEL FREE TO ASK COURSE RELATED TOPICS --------------------------------------------------------------------------- Learn & Grow ! Thankyou for Watching and Supporting #KnowledgeShip
Views: 3158 Knowledge Ship
Types of Polymerization Reactions || Ionic Polymerisation 1 || Disk Telangana
 
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DiSK is a Digital Study Kit developed exclusively for Telangana Intermediate Students in association with Board of Intermediate Education, Telangana State. Once Downloaded, works OFFLINE without Internet(Except for Video Lessons & Ask Feature). DiSK is available for MPC, BiPC, CEC, MEC, HEC group Students in both Telugu and English Mediums. Along with Board Exams, Students can prepare for Entrance Exams like JEE, EAMCET, NEET and CA-CPT. DiSK is loaded with lot of exciting features, to provide classroom experience to students: * Practice for all kind of Entrance Exams - JEE, Eamcet, NEET & CA-CPT * Unlimited Mock Tests & Practice * Test performance in Dashboard * Text Books with relevant syllabus & helps students to understand the subject in a better & robust way * Extensive range of Multiple Choice Questions enable students to practice MCQ's * 6000+ Videos with Unlimited Access * Students can talk to our experts for subject related support & assistance App : One small size download in your mobile, then its ready to go . No problem if the user is Online or Offline, they can enjoy the access to the content whenever and wherever like to have. DiSK is available in Android, IOS and Web. It can be accessible on any device. Be it a phone, tablet or PC. To Download the App in Playstore: https://play.google.com/store/apps/details?id=com.cloudedz.disk&hl=en To Download the App in Appstore: https://itunes.apple.com/us/app/disk/id1288891801?ls=1&mt=8 Now, you can say its 24/7 AnyWhere AnyTime Learning; Truly. Subscribe to DiSK: https://www.youtube.com/channel/UCdfgC1eKN8PD1TUTjv-gZuw/videos Facebook: https://www.facebook.com/biedisk Twitter: https://www.twitter.com/biedisk Instagram: https://instagram.com/biedisk
Mod-01 Lec-24 Polymer Stereochemistry and Coordination Polymerization (Contd.)
 
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Polymer Chemistry by Dr. D. Dhara,Department of Chemistry and Biochemistry,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
Views: 1705 nptelhrd
Stereo Chemistry and Classification of Polymers
 
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For 12th and B.Sc 3rd students
Views: 286 Dr. Devesh Sharma
SFCM_09_23: REVERSIBLY CROSSLINKED ISOTACTIC POLYPROPYLENE/CLAY NANOCOMPOSITES
 
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PREPARATION AND PROPERTIES OF REVERSIBLY CROSSLINKED ISOTACTIC POLYPROPYLENE/CLAY NANOCOMPOSITES SAID BOUHELAL LMPMP, FACULTY OF ENGINEERING FERHAT ABBAS UNIVERSITY, SÉTIF, ARGELIA. New advances concerning the methodology employed to prepare nanocomposites of iPP and nanoclays are reported. Conventional (reactive melt mixing) and "in situ" preparations were performed, and the structural properties of the nanocomposites are discussed. Results suggest that the nanoclay exhibits a partial and, in some cases a total exfoliation within the composites. Adhesion between the polymeric matrix and the nanoclay layers is similar to that obtained after grafting. The analysis performed using the WAXS and DSC techniques permits to describe, at nano-scale level, the contribution of the nanoclay to the nanocomposite system. The microhardness values of the iPP-clay composites depend on the clay content and on the preparation method, and linearly correlate, according to the additivity law, with the degree of crystallinity. Any kind of industrial equipments can be used to perform the reactive melt processing, i.e., injection molding, calendering, etc. In each processing method, the effective shearing produced on the composites is different. All the crosslinked samples show polymorphism. The -form, and its transformations during the heating process, are responsible for the melting behavior of the samples with 16-30 wt % of clay. The nanoclay content seems to affect the nanostructure and consequently, the microhardness of the samples in a similar manner. Results reveal that the microhardness of the nanocomposites is also affected by the preparation method, influencing the surface free energy of the crystals. SEMINARIOS DE FRONTERAS DE LA CIENCIA DE MATERIALES DEPARTAMENTO DE CIENCIA DE MATERIALES ETSI Caminos, Canales y Puertos. UNIVERSIDAD POLITÉCNICA DE MADRID http://www.mater.upm.es/Seminarios.asp Video Realizado por el Gabinete de Tele-Educación de la Universidad Politécnica de Madrid.
Views: 3091 UPM
Isotactic Meaning
 
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Video is created with the help of wikipedia, if you are looking for accurate, professional translation services and efficient localization you can use Universal Translation Services https://www.universal-translation-services.com?ap_id=ViragGNG Video shows what isotactic means. Having substituents arranged in the same (rather than random) configuration in each repeat unit. Isotactic Meaning. How to pronounce, definition audio dictionary. How to say isotactic. Powered by MaryTTS, Wiktionary
Views: 213 ADictionary

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