Accession Number : ADA294116

Title :   A Molecular Dynamics Investigation of the Structural Characteristics of Amorphous and Annealed Poly (Vinylidene Fluoride) and Vinylidene Fluoride - Trifluoroethylene Copolymers.

Descriptive Note : Final rept.,

Corporate Author : NAVAL UNDERSEA WARFARE CENTER NEWPORT DIV NEW LONDON CT NEW LONDON DETACHMENT

Personal Author(s) : Holman, Robert W. ; Kavarnos, George J.

PDF Url : ADA294116

Report Date : 17 APR 1995

Pagination or Media Count : 29

Abstract : Molecular dynamics (MD) computations predict that the percentage of gauche bonds for poly(vinylidene fluoride) PVDF is greater than that for the 50 mol% copolymer with trifluoroethylene, at high temperature and after annealing. PVDF is enriched in gauche conformations on cooling whereas the copolymer acquires more trans conformations. The MD results are consistent with experimental trends that have been observed for these piezoelectric polymers. jg

Descriptors :   *STRUCTURAL PROPERTIES, *COPOLYMERS, *PIEZOELECTRIC MATERIALS, ANNEALING, COMPUTATIONS, DYNAMICS, POLYMERS, HIGH TEMPERATURE, COOLING, CHEMICAL BONDS, PATTERNS, FLUORIDES, FLUOROPOLYMERS, MOLECULAR PROPERTIES, VINYL PLASTICS.

Subject Categories : Polymer Chemistry
      Inorganic Chemistry
      Physical Chemistry
      Plastics
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE