SEEDING OF SUPERCOOLED POLYETHYLENE WITH EXTENDED CHAIN CRYSTALS.

Abstract

Seeding of supercooled polyethylene melt and solution with extended chain single crystals did not markedly decrease the degree of supercooling necessary to initiate crystal growth. No extended chain growth was induced with these nuclei. An analysis of the first traces of crystal growth allowed some conclusion about nucleation and growth mechanism. In order to account for the measurement, a growing crystal must have a 10,000 to 30,000 A thick surface layer which increases in perfection from the outside to the inside. A differential scanning calorimeter was used for most of the experiments. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1965
Accession Number
AD0624140

Entities

People

  • Bernhard Wunderlich
  • C. M. Cormier

Organizations

  • Rensselaer Polytechnic Institute

Tags

DTIC Thesaurus Topics

  • Calorimeters
  • Crystal Growth
  • Crystallization
  • Crystals
  • Dielectric Polymers
  • Measurement
  • Measuring Instruments
  • Nucleation
  • Scanning
  • Single Crystals
  • Solid State Processes
  • Supercooling

Fields of Study

  • Chemistry

Readers

  • Combustion science or combustion engineering.
  • Materials Science and Engineering.
  • Thermal Physics or Thermal Science.