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Search results “Determining the molecular weight distribution of polymers”
MOLECULAR WEIGHT OF POLYMER AND POLYDESPERSITY
 
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NUMBER AVERAGE MOLECULAR WEIGHT, WEIGHT AVERAGE MOLECULAR WEIGHT CAN BE DETERMINED ALSO POLYDISPERSITY IS VERY USEFUL FOR DETERMINING THE MOLECULAR WEIGHT OF POLYMER. PLEASE LIKE AND SHARE....
Views: 16207 Advanced Chemistry
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: 66290 LearnChemE
MOLECULAR WEIGHT OF POLYMER BY VISCOSITY METHOD
 
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VISCOSITY METHOD IS ONE OF THE SIMPLEST METHOD TO DETERMINE THE MOLECULAR WEIGHT. THE MOLECULAR WEIGHT OBTAINED IS VISCOSITY AVERAGE MOLECULAR WEIGHT..
Views: 11489 Advanced Chemistry
Mod-01 Lec-31 Determination of Molecular Weight of Polymers (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: 15120 nptelhrd
Ep4 Step-growth polymerization, Carothers equation, molecular weight - UCSD NANO 134 Darren Lipomi
 
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Step-growth polymerization (vs chain growth, to be covered in more detail later in the course), extent of reaction, number-average degree of polymerization, control of molecular weight (interfacial polymerization, increasing the temperature and decreasing the pressure gives higher MW, stoichiometric imbalance and modified Carothers equation). http://lipomigroup.org
Views: 4925 Darren Lipomi
Mod-01 Lec-32 Determination of Molecular Weight of Polymers (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: 7790 nptelhrd
Average Molecular Weight Calculation
 
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Calculates average molecular weight using a mass basis and a molar basis. Made by faculty at the University of Colorado Boulder Department of Chemical and Biological Engineering. Check out our Material & Energy Balances playlists: https://www.youtube.com/user/LearnChemE/playlists?view=50&flow=list&shelf_id=8 Check out our website for screencasts organized by popular textbooks: http://www.learncheme.com/screencasts/mass-energy-balances Check out our website for interactive MEB simulations: http://www.learncheme.com/simulations/mass-energy-balances
Views: 37815 LearnChemE
Polymer Average Molecular Weight
 
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The different types of Average Molecular Weights for Polymers are examined.
Views: 18082 Engineer Clearly
Polymerization Reactor: Molecular Weight Distribution
 
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Discusses how molecular weight distribution (MWD) in a polymerization reactor depends on the type of reactor used because the MWD depends on the residence time distribution, the concentration at which reaction takes place, and the chain growth rate. Made by faculty at the University of Colorado Boulder, Department of Chemical and Biological Engineering. Check out our Materials Science playlist: https://www.youtube.com/playlist?list=PLC9CE6BFBB0D003CD Check out our Kinetics/Reactor Design playlists: https://www.youtube.com/user/LearnChemE/playlists?view=50&flow=list&shelf_id=7 Are you using a textbook? Check out our website for videos organized by textbook chapters: http://www.learncheme.com/screencasts/kinetics-reactor-design
Views: 3562 LearnChemE
NUMERICALS ON NUMBER AVERAGE MASS AVERAGE AND VISCOSITY AVERAGE MOLECULAR WEIGHT OF POLYMER
 
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METHOD TO CALCULATE DIFFERENT TYPE OF MOLECULAR WEIGHT IS DISCUSSED
Views: 4684 Advanced Chemistry
MOLECULAR MASS OF POLYMERS
 
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Views: 1893 7activestudio
Degree of Polymerization
 
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Degree of Polymerization of styrene
Views: 29869 Engineer Clearly
Polymer Chemistry-Number average Molecular mass-Engg. Chem1 Notes-CY6151
 
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Anna University Engineering Chemistry1 Notes (CY6151) Unit-1 Polymer Chemistry Molecular Mass of Polymer Number Average Molecular Mass
Views: 11479 vijaya rajadurai
01 Molecular Weight of Macromolecule Polymer
 
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Defination & Meaning of Degree of Polymerisation Equation of Degree of Polymerisation Molecular weight of Macromolecules (Polymers) Types of Average Molecular weights of macromolecules Number average molecular weight Mass Average Molecular weights their defination & expression.
Views: 1695 Kate Tutorials
Analyzing Molecular Weight Distribution w/ Rheology
 
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In this TA Instruments Webinar, Professor Chris Macosko discusses analyzing molecular weight distribution and blend morphology using rheology. Rheology is a powerful tool for analyzing polymer blends. This seminar will begin with the simplest case: molten blends of two different molecular weight homopolymers.We will learn how, using the reptation model, rheology can determine molecular weight distribution. The model will then be extended to miscible blends of two different polymers by incorporating the shift in their glass transitions to capture the self concentration of each polymer. Immiscible blends introduce phase morphology and interfacial tension forces. Rheology can be used to measure droplet size and size distribution. Novel porous structures can be created from cocontinuous polymer blends. Rheology can assess their stability and detect interfacial reactions. At high shear stresses interfaces slip leading to anamolous rheology. The strengths and limitations of rheology as a tool for characterizing polymer blends will be summarized.
Views: 5800 TA Instruments
MOLECULAR WEIGHT CONTROL IN POLYCONDENSATION POLYMERIZATION
 
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MOLECULAR WEIGHT CAN BE CONTROLLED BY EITHER ADDING MONOFUNCTIONAL MONOMER OR USING ONE MONOMER IN SLIGHTLY EXCESS.... PLEASE LIKE AND SHARE......
Views: 394 Advanced Chemistry
Rheology of Polymers
 
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CHE 402 Pre-lab lecture on theory of intrinsic viscosity of polymers
Views: 12474 UIS Science
Degree of polymerization example problem
 
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tutorial example problem showing how to calculate degree of polymerization in a nylon 6,6 sample with an average molecular weight of 250,000g/mol
Views: 2113 Taylor Sparks
Mod-01 Lec-33 Determination of Molecular Weight of Polymers (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: 4968 nptelhrd
Polydispersity Index (PDI)- Polymer chemistry-Engineering Chemistry1 Notes- CY6151
 
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Anna University Engineering Chemistry1(CY6151) Notes Unit-1 Polymer Chemistry Polydispersity Index
Views: 12292 vijaya rajadurai
POLYMERS (Number avg. molecular weight,weight avg. molecular weight & polydispersity index)
 
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This video contains detailed explanations of how to calculate number average molecular weight,weight avg molecular weight and polydispersity index of polymers)
Average Molecular Weight
 
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Part 3 of 4 of a basic skills video set intended to lay the foundations for material balance problems.
Views: 129 David Roberson
Average Molecular Weight Derivation
 
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Derives average molecular weight given mass or molar compositions. Made by faculty at the University of Colorado Boulder Department of Chemical and Biological Engineering. Check out our Material & Energy Balances playlists: https://www.youtube.com/user/LearnChemE/playlists?view=50&flow=list&shelf_id=8 Check out our website for screencasts organized by popular textbooks: http://www.learncheme.com/screencasts/mass-energy-balances Check out our website for interactive MEB simulations: http://www.learncheme.com/simulations/mass-energy-balances
Views: 7446 LearnChemE
Ep2 More examples of polymers, glass transition, molecular weight UCSD NANO 134 Darren Lipomi
 
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We continue our journey through the box of polymer samples, and talk about the rudiments of organic microstructure and molecular weight. NANO 134 Polymeric Materials - UC San Diego - Prof. Darren Lipomi http://lipomigroup.org
Views: 3069 Darren Lipomi
Chemistry Lab - Determination of Molecular Weight
 
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Shot by Paul J. Ramsey, Media Resources, Eastern Kentucky University.
Views: 12069 Paul Ramsey
Mod-01 Lec-30 Frictional Properties of Solutions (Contd.) and Determination of Molecular Weight
 
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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: 4829 nptelhrd
Chemistry Part II  Chapter 14 Degree of Polymerization ,Molecular Mass of Polymers & Types of Polyme
 
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Share With Class Mates & DON'T Forget To Click Subscribe Button for Get More video Lectures. Thank You !!! For new Updates like our page on Facebook https://www.facebook.com/pgclectures Visit our site: http://pgclectures.com https://twitter.com/PGC_Lectures https://plus.google.com/+PGClecture Visit our site: http://pgclectures.com Share With Class Mates & DON'T Forget To Click Subscribe Button for Get More video Lectures. Thank You !!! For new Updates like our page on Facebook https://www.facebook.com/pgclectures Visit our site: http://pgclectures.com https://twitter.com/PGC_Lectures https://plus.google.com/+PGClecture Visit our site: http://pgclectures.com
Views: 4750 PGC Lectures
Molecular weight Kaise nikale #math5you
 
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Hello dosto Hamare YouTube channel Mein aapka swagat hai Hamare channel Math 5 you ko subscribe kare aur like kare aur share karna na Bhule About this video Hello dosto is video mein hum aapko batayenge molecular weight Kaise nikala jata hai tu Dekhte Rehna video ko aur like subscribe karna na Bhule aur koi mistake Hoto comment box me Jarur Karega #math5you ,how to calculate molecular weight, ,how to calculate molecular weight of NaCl, ,how to calculate molecular weight of NaOH, ,how to calculate molecular weight of NH2CONH2, ,how to calculate molecular weight formula, molecular weight,molecular mass,how to calculate molecular weight,atomic weight,molecule,molecular weight al2(so4)3,molecular weight of al2(so4)3,molecular weight of a compound,al2(so4)3 molecular weight,how to find molecular weight,how to calculate molecular weight of nacl,molecular,how to calculate molecular weight of naoh,molecular formula,molecular mass (literature subject) molecular weight calculation molecular weight in hindi molecular weight of polymers molecular weight of elements molecular weight kaise nikale molecular weight distribution of polymers molecular weight calculation in hindi molecular weight of polymer by viscosity average method molecular weight of oxalic acid molecular weight kaise nikalte hai how to find molecular weight of elements how to find molecular weight of a compound how to find molecular weight of a gas how to find molecular weight of co2 how to find molecular weight in chemdraw how to find molecular weight from percentages how to find molecular weight of polymer how to find molecular weight of naoh how to find molecular weight of a mixture
Views: 37 MATH 5YOU
Molecular Mass of Polymers || Molecular Mass of Polymers 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
Copolymer molecular weight 17
 
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Materials Science problem that shows how to calculate the molecular weight of a two-part copolymer using the types of repeat units and the degree of polymerization.
Weight average molecular mass-Polymer Chemistry-Anna University Engg Chem Notes-1(CY6151)
 
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Anna University Engineering Chemistry-1 Notes (CY6151) Unit-1 Polymer Chemistry Molecular Mass of Polymer Weight- Average molecular mass
Views: 8165 vijaya rajadurai
Concept of Number average and Mass average molecular weights
 
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Subject : Chemistry Paper : Physical Chemistry-II (Statistical Thermodynamics, Chemical Dynamics, Electrochemistry and Macromolecules)
Views: 481 Vidya-mitra
What is POLYMER CHARACTERIZATION? What does POLYMER CHARACTERIZATION mean?
 
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What is POLYMER CHARACTERIZATION? What does POLYMER CHARACTERIZATION mean? POLYMER CHARACTERIZATION meaning - POLYMER CHARACTERIZATION definition - POLYMER CHARACTERIZATION explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Polymer characterization is the analytical branch of polymer science. The discipline is concerned with the characterization of polymeric materials on a variety of levels. The characterization typically has as a goal to improve the performance of the material. As such, many characterization techniques should ideally be linked to the desirable properties of the material such as strength, impermeability, thermal stability, and optical properties. Characterization techniques are typically used to determine molecular mass, molecular structure, morphology, thermal properties, and mechanical properties. The molecular mass of a polymer differs from typical molecules, in that polymerization reactions produce a distribution of molecular weights and shapes. The distribution of molecular masses can be summarized by the number average molecular weight, weight average molecular weight, and polydispersity. Some of the most common methods for determining these parameters are colligative property measurements, static light scattering techniques, viscometry, and size exclusion chromatography. Gel permeation chromatography, a type of size exclusion chromatography, is an especially useful technique used to directly determine the molecular weight distribution parameters based on the polymer's hydrodynamic volume. Gel permeation chromatography is often used in combination with multi-angle light scattering (MALS), Low-angle laser light scattering (LALLS) and/or viscometry for an absolute determination (i.e., independent of the chromatographic separation details) of the molecular weight distribution as well as the branching ratio and degree of long chain branching of a polymer, provided a suitable solvent can be found. Molar mass determination of copolymers is a much more complicated procedure. The complications arise from the effect of solvent on the homopolymers and how this can affect the copolymer morphology. Analysis of copolymers typically requires multiple characterization methods. For instance, copolymers with short chain branching such as linear low-density polyethylene (a copolymer of ethylene and a higher alkene such as hexene or octene) require the use of Analytical Temperature Rising Elution Fractionation (ATREF) techniques. These techniques can reveal how the short chain branches are distributed over the various molecular weights. A more efficient analysis of copolymer molecular mass and composition is possible using GPC combined with a triple-detection system comprising multi-angle light scattering, UV absorption and differential refractometry, if the copolymer is composed of two base polymers that provide different responses to UV and/or refractive index. Many of the analytical techniques used to determine the molecular structure of unknown organic compounds are also used in polymer characterization. Spectroscopic techniques such as ultraviolet-visible spectroscopy, infrared spectroscopy, Raman spectroscopy, nuclear magnetic resonance spectroscopy, electron spin resonance spectroscopy, X-ray diffraction, and mass spectrometry are used to identify common functional groups. Polymer morphology is a microscale property that is largely dictated by the amorphous or crystalline portions of the polymer chains and their influence on each other. Microscopy techniques are especially useful in determining these microscale properties, as the domains created by the polymer morphology are large enough to be viewed using modern microscopy instruments. Some of the most common microscopy techniques used are X-ray diffraction, Transmission Electron Microscopy, Scanning Transmission Electron Microscopy, Scanning Electron Microscopy, and Atomic Force Microscopy.
Views: 2427 The Audiopedia
Molecular Mass of Polymers
 
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Class 12: Chemistry: Polymers: Molecular Mass of Polymers
Views: 1508 Flexiguru
Measure molecular weight, size & structure - Viscotek TDAmax multidetector GPC/SEC system -
 
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Malvern's TDAmax system is specifically designed for the characterization of proteins, natural and synthetic polymers, copolymers and other macromolecules. With fully integrated detectors and temperature control up to 80°C the TDAmax sets the standard for GPC/SEC systems (Gel Permeation Chromatography/Size Exclusion Chromatography). For the analysis of the molecular weight, molecular weight distribution, molecular size and structure. For more information, visit http://www.malvern.com/en/products/product-range/viscotek-range/viscotek-systems/viscotek-tdamax/default.aspx
Views: 3078 Malvern Panalytical
Ep5 Kinetics of step-growth polymerization, Flory distribution - UCSD NANO 134 Darren Lipomi
 
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The kinetics of self-catalyzed and acid-catalyzed polyesterification (an example of step-growth polymerization). Derivation of the most probable or Flory distribution of the number fraction of x-mers and weight fraction of x-mers at particular extents of reaction p and length of the chain.
Views: 3821 Darren Lipomi
Ep13 Polymers in nanoengineering, molecular weight, step/chain growth. UCSD, NANO 101, Darren Lipomi
 
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Introduction to polymers for nanoengineering: molecular weight, step-growth vs. chain-growth, radius of gyration.
Views: 918 Darren Lipomi
Characterizing Molecular Structure in Synthetic and Natural Polymers by Multi Angle Light Scattering
 
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Nowadays, in the majority of polymer characterization the standard-calibrated SEC is the employed method. However, as SEC itself is not an absolute technique, it typically provides incorrect information about the molar mass distribution and no additional information about the molecular structure. Especially branched and/or ultra-high molar mass molecules have been shown to exhibit abnormal elution behavior which leads to wrong description of molar mass distribution. In this webinar the principles of detection and characterization of polymers by multi-angle light scattering (MALS) coupled with SEC will be discussed. It will be elucidated how SEC failures can be overcome using the absolute method of MALS. Combination of SEC with a MALS detector also enables to determine the branching distribution and calculate average branching ratios. Moreover, the attendants will learn about the advantages of field flow fractionation for the separation of large and branched macromolecules; and also how combination of SEC with a MALS detector and an online viscometer can provide fundamental description of polymer properties and deep insight into the polymer structure.
Views: 53 Wyatt Technology
How to calculate number-average, weight-average, and polydispersity index
 
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This video shows how to calculate the number average and weight average in Excel
Views: 8902 Nayef Daher
Polymerization in a CSTR Part 1
 
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Part 1 of the solution for a polymerization carried out in a CSTR. Find the molecular weight distribution, degree of polymerization, average molecular weights and polydispersity. Made by faculty at the University of Colorado Boulder, Department of Chemical and Biological Engineering. Check out our Kinetics/Reactor Design playlists: https://www.youtube.com/user/LearnChemE/playlists?view=50&flow=list&shelf_id=7 Are you using a textbook? Check out our website for videos organized by textbook chapters: http://www.learncheme.com/screencasts/kinetics-reactor-design
Views: 2898 LearnChemE
From molecular weight distribution to nonlinear rheology with RepTate
 
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This video demonstrates how to use RepTate to predict the nonlinear rheology of entangled polydisperse polymers using the Blend Rolie-Poly model, starting from the molecular weight distribution data. More info: http://reptate.readthedocs.io
Views: 47 RepTate Software
Molecular Mass of Polymers
 
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Gives you Idea of Degree of Polymerization, PDI, Types of dispersion polymers
Views: 1842 Anil Konkati