Accession Number:

AD0408900

Title:

Technical Report No. 9

Descriptive Note:

Technical rept. no. 9, 1 Sep 1962-28 Feb 1963

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA MELLON INST OF SCIENCE

Personal Author(s):

Report Date:

1963-02-01

Pagination or Media Count:

36.0

Abstract:

Relationship of the authors research on molecular structure and melt viscosity of polymers to earlier research by Tobolsky is discussed. Methods for making monodisperse polystyrenes of molecular weight of 1000 or lower were developed as well as methods for introducing a chloromethyl group on the aromatic ring of a predetermined fraction of the styrene units in a polystyrene chain, with negligible cross linking. A monodisperse polystyrene backbone of molecular weight 1.4 x 10 to the 5th power containing on the average one -CH2Cl group per 400 styrene units, was reacted with an excess of monodisperse polystyryllithium branches to yield a product containing a comb-type polymer.

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE