Accession Number : AD0681319

Title :   THE DEPENDENCE OF GLASS TEMPERATURE ON MOLECULAR WEIGHT FOR POLY-ALPHA-METHYL STYRENE,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF APPLIED CHEMISTRY

Personal Author(s) : Cowie,J. M. G. ; Toporowski,P. M.

Report Date : 29 MAY 1968

Pagination or Media Count : 5

Abstract : Glass temperatures T(g) for poly alpha-methyl styrene have been measured over the mol. wt range 1,500 to 1,400,000. The free volume of a chain end is found to be 85 cubic A which is approximately half the size of a monomer unit. (Author)

Descriptors :   (*STYRENE PLASTICS, MOLECULAR WEIGHT), VOLUME, POLYMERIZATION, MOLECULAR ISOMERISM, TRANSITION TEMPERATURE, CANADA

Subject Categories : Plastics
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE