摘要:

During an extensive study of gas and vapor transport in solventcast acrylonitrile homopolymer films, it was found that the film contained small amounts of tenaciously held solvent, normally dimethylformamide [1]. The amount remaining even after prolonged exposure in vacuum at 50°C was about 2. 5%. This could be reduced to less than 0. 25% by prolonged boiling in water and completely removed by alternate benzene and boiling water extractions. Removal of the 2–3% residual solvent was found to raise the glass transition temperature from 72 to 95°C and to lead to more brittle films.

ISSN:0022-2348    

DOI:10.1080/00222348008212805

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

The Research Group of Polymer Physics in Japan, in cooperation with the Research Group of Polymer Solutions, publishes an annual summary of the work done on high polymer physics in Japan. The publication consists of short reports (2 to 4 pages) describing current or recently completed research. This journal, in cooperation with Professor S. Oka, Chief Editor of the Report, publishes the table of contents of each issue as soon as it is available. Papers on biophysical matters are also included, since Annual Reports of the Research Group in Biophysics in Japan has been discontinued. Copies of the complete report (and back issues) can be obtained from:

ISSN:0022-2348    

DOI:10.1080/00222348008212806

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor