Accession Number : ADA290374

Title :   Real-Time X-Ray Scattering Study of Processing of Eight Performance Thermoplastics.

Descriptive Note : Final rept. Jul 91-Sept 94,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s) : Cebe, Peggy

PDF Url : ADA290374

Report Date : 14 NOV 1994

Pagination or Media Count : 26

Abstract : The purpose of the research was to use real time X-ray scattering: (1) to assist in development of a model for the shrinkage of thermoplastic polymers during processing, and (2) to study the kinetics of crystal structure development. The principle tasks involved real-time X-ray scattering experiments. The secondary tasks involved characterization studies of the materials. We are using real time X ray scattering to study the shrinkage of crystallizable thermoplastic polymers during heat treatment. Most processing models in use today do not use data collected in situ. The matrix shrinkage is determined in real time, directly from x ray scattering. The evolution of cell structure that develops during crystallization can be detected by small angle and wide angle real time x ray scattering.

Descriptors :   *CRYSTAL STRUCTURE, *THERMOPLASTIC RESINS, *X RAY SCATTERING, *SHRINKAGE, MATHEMATICAL MODELS, ANGLES, REAL TIME, PHASE TRANSFORMATIONS, POLYMERS, PROCESSING, CRYSTALLIZATION, HEAT TREATMENT, EVOLUTION(GENERAL).

Subject Categories : Polymer Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE