louboutin replica

Static light scattering is an established method for the absolute determination of the weight average molar mass (Mw) of a polymer. The measurement is carried out without separation of the polymer solution in a light scattering detector cell. The measured quantity is the intensity of the scattered light (Excess-Rayleigh scattering), which is proportional to the average molecular size of the dissolved substance.

 

A series of measurements is performed with different concentrations (c) at various scattering angles (theta). The molecular weight average Mw is determined with by plotting the data and extrapolation of c and theta to zero (Zimm-plot). Other parameters derived from the Zimm-plot are the z-average of the radius of gyration and the second virial coefficient A2. One requirement is the knowledge of the refractive index increment (dn/dc) of the polymer in the solvent used.

Results provided to the client:

  • absolute molecular weight average Mw
  • radius of gyration z-average
  • second virial coefficient A2


Request quote for sample testing

Customers from USA and Canada can use the online store and pay with credit card:

Shopping Cart

The cart is empty
If form does not appear below clickhere
HTML Forms powered by Wufoo

Latest News

  • GPC Training Course June 4th – 5th 2019 +

    GPC Training CourseJune 4th – 5th 2019 PSS USA will be hosting their GPC training course again. It provides lectures on Read More
  • Presentation at ACS Spring 2019 National Meeting & Expo +

    ACS Spring 2019 National Meeting in Orlando, FL, March 31 – April 4, 2019.  Determination of the Chemical Heterogeneity of Ternary Read More
  • New PSS e-book Series +

    Part 1: GPC/SEC Theory and Background Contact us to receive a free copy of PSS e-book Series part 1: GPC/SEC Read More
  • PSS Webcasts (on-demand) +

    PSS Webcasts (on-demand) Duration: 60 minutes, Q&A session included GPC/SEC/GFC Basics This webinar is designed for beginners and scientists who Read More
  • Introducing our new Online Store +

    We are pleased to announce that we will be launching our NEW and IMPROVED PSS online store on November 2nd . You Read More
  • 1

catalogleft