THE DEPENDENCE OF THE 2ND VIRIALCOEFFICIENT ON THE CONSTITUTION OF THE ENDGROUP OF THE MACROMOLECULES

Abstract

A semimicro cryoscopic apparatus of high accuracy, based on the use of a Wheatstone bridge and a galvanometer system with thermistor, was developed to measure temperature. With this apparatus the 2nd virialcoefficients of four kinds of polystyrene, which have different endgroups, were determined in naphthaline. The error of the 2nd virialcoefficient was calculated. The influence of the endgroup on the 2nd virialcoefficient becomes effective with a degree of polymerization less than 15. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1961
Accession Number
AD0262953

Entities

People

  • K. Uebrreiter

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Dielectric Polymers
  • Errors
  • Galvanometers
  • Macromolecules
  • Materials
  • Molecules
  • Plastics
  • Polymerization
  • Polymers
  • Polystyrenes
  • Resins
  • Synthetic Polymers
  • Thermistors

Readers

  • Polymer Science and Technology
  • Thermal Physics or Thermal Science.