Accession Number:

ADA237334

Title:

Conformational Characteristics of the Polycarbonate 4,4'- Isopropylidenediphenol

Descriptive Note:

Interim technical rept. no. 29, 1990-1991,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s):

Report Date:

1991-05-31

Pagination or Media Count:

32.0

Abstract:

A classical force field has been developed to represent the conformational characteristics of the polycarbonate of 4,4- isopropylidenediphenol bisphenol-A polycarbonate, PC based upon recent experimental and quantum mechanical data reported for diphenylcarbonate and diphenylpropane. This force field is an improvement upon previously published molecular mechanics force fields because it allows for rotation about all the single bonds in the PC repeat unit. A rotational isomeric state model PC has been obtained using the force field results the computer unperturbed chain dimensions agree well with reported experimental values.

Subject Categories:

  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE