Accession Number : ADA112208

Title :   Studies of Elastic Properties on Stretch Films of Polycarbonate by Brillouin Scattering.

Descriptive Note : Technical rept.,

Corporate Author : UTAH UNIV SALT LAKE CITY DEPT OF CHEMISTRY

Personal Author(s) : Liu,Quan-L ; Wang,C H

PDF Url : ADA112208

Report Date : 22 Feb 1982

Pagination or Media Count : 33

Abstract : Results of the Brillouin scattering study of polycarbonate (PC) films stretched at a temperature slightly above Tg are reported. The elastic constants C11, C13, C33, and C44 are determined as a function of stretched ratio. Using the affine orientational model recently developed by Wang and Cavanaugh, the orientation parameter is obtained as a function of stretched ratio. The changes in the elastic constants and the orientation parameter are discussed in terms of chain morphology. The results in PC films are found to be significantly different from other polymer films, such as poly(ethylene terephthalate) and isotactic polypropylene, recently investigated in this laboratory. The reason for the difference is discussed. (Author)

Descriptors :   *Polycarbonates, *Films, *Elastic properties, *Scattering, Brillouin zones, Constants, Morphology, Molecular structure, Ratios, Models, Light scattering

Subject Categories : Coatings, Colorants and Finishes
      Plastics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE