Skip to left navigation

Skip to page content

Find us on...

The physical and even the chemical properties of a polymer in a final manufactured product can be closely related to the polymer structure.

Types of polymer structure:

  • Linear
  • Random branched
  • Comb structure
  • Starburst polymers or dendrimers
  • Copolymers
  • Cross-linked

Multi-detector SEC, such as the TDA, can be used to determine a number of the factors that determine structure:

  • Branching ratio
  • Branching frequency
  • Molecular density / Intrinsic Viscosity
  • Copolymer composition
  • Backbone modification

Structure is determined using a combination of an intrinsic viscosity detector that is sensitive to density, and a light scattering detector that provides molecular weight. These parameters are used to construct a Mark – Houwink plot from which a range of structural information can be deduced.

Application example:
Acrylonitrile-butadiene copolymers, commonly called nitrile rubbers (NBR), are used widely for adhesive compounding, and gloves used for examination and cleaning.

The composition of the copolymers, the polymer cross-linking and branching as well as the molecular weight of NBR affect the macroscopic properties of NBR such as flexibility and puncture resistance.

Related products

OMNISEC The world’s most advanced multi-detector GPC/SEC system Image
Measurement
Molecular weight, Molecular size, Molecular structure
Temperature range
20°C to 65°C
Technology
Size Exclusion Chromatography, Static Light Scattering, Gel Permeation Chromatography
More information
Viscotek range The leading multi-detector GPC/SEC systems and detectors. Image
Measurement
Molecular structure, Molecular weight, Molecular size, Protein aggregation, Rheology and viscosity
Temperature range
25°C to 160°C
Technology
Dilute Solution Viscometry, Size Exclusion Chromatography, Gel Permeation Chromatography, Static Light Scattering
More information
 
 

Resource center search

Free access to exclusive content including webinars, presentations, application notes, technical notes, whitepapers and more. Enter your search term in the box and use the drop down boxes to filter the results.

Reset filters
Items shown: 5, 10, 20, ALL
Sort by: Date or Alphabetical
Previous page Showing results 1 - 5 of 61 Next page
Structural elucidation of dextrans and other polysaccharides using OMNISEC Multi-Detection GPC Application Note (English)

A series of dextran samples ranging in molecular weight from about 1– 650 kDa are characterized using OMNISEC. Structural comparisons to other polysaccharides, gum arabic and pectin are presented


Keywords: Polymer solutions English Application Note Molecular structure Molecular size Molecular weight Gel Permeation Chromatography Static Light Scattering Size Exclusion Chromatography Polymers from renewable sources Polysaccharides OMNISEC 

Optimising food additive choice: Exploring the value of recent advances in SEC technology Article (English)

State-of-the-art GPC/SEC systems, such as OMNISEC, offer the sensitivity required to precisely evaluate different grades of polymer-based food additive and to make an optimal choice in formulation


Keywords: English Article Molecular structure Molecular size Molecular weight Gel Permeation Chromatography Static Light Scattering Size Exclusion Chromatography Food additives Polysaccharides OMNISEC 

The Benefits of Multi-Detector SEC for Protein Analysis Article (English)

Using a light scattering detector as part of a multi-detector Size Exclusion Chromatography system provides the accurate molecular weight (MW) data needed to assess the activity, safety and clinical efficacy of therapeutic proteins.


Keywords: English Article Molecular structure Molecular size Molecular weight Gel Permeation Chromatography Static Light Scattering Size Exclusion Chromatography Protein aggregation Proteins Biopharmaceutical development Viscotek TDAmax Viscotek TDA 305 

Measuring the 2nd Virial Coeffient and Molecular Density of Proteins to Improve Crystallization Poster (English)

The second virial coefficient of Human Serum Albumin (HSA) was measured using a SEC-MALS 20 detector connected to a Refractive Index concentration detector and an online differential viscometer. Two different buffer conditions, Phosphate buffer pH 7....


Keywords: English Poster Molecular structure Molecular size Molecular weight Gel Permeation Chromatography Size Exclusion Chromatography Proteins Biopharmaceutical development Viscotek SEC-MALS Viscotek TDA 305 

An investigation into the effects of aging on automotive bumper samples by xylene soluble flow injection polymer analysis (XS-FIPA) Poster (English)

This poster describes the use of flow injection polymer analysis (FIPA) as an analytical tool for xylene soluble (XS) determination with quick and easy simultaneous measurements of molecular weight (MW), intrinsic viscosity (IV) and XS%. The techniqu...


Keywords: Polymer solutions English Poster Molecular structure Molecular size Molecular weight Gel Permeation Chromatography Size Exclusion Chromatography Automotive and aerospace Viscotek TDAmax 
Previous page Showing results 1 - 5 of 61 Next page

Glossary

Contact sales Register now