摘要
Atactic polystyrene ( a PS) films cast from solutions of different concentrations in dichloromethane under vacuum conditions were prepared.Their tensile mechanical behavior has been studied.It was found that the tensile strength of films cast in vacuum increases significantly with the solution concentration when the solution concentration is above 0.02?g/mL.The existence of a critical concentration value in the region of 0 01～0 02?g/mL is in agreement with the results of previous experiments.The critical concentration has been identified as c e for coil entanglement.
Atactic-polystyrene ( a-PS) films cast from solutions of different concentrations in dichloromethane under vacuum conditions were prepared. Their tensile mechanical behavior has been studied. It was found that the tensile strength of films cast in vacuum increases significantly with the solution concentration when the solution concentration is above 0.02 g/mL. The existence of a critical concentration value in the region of 0.01 similar to 0.02 g/mL is in agreement with the results of previous experiments. The critical concentration has been identified as c. for coil entanglement.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2002年第1期113-115,共3页
Acta Polymerica Sinica
基金
国家重点基础研究专项经费资助项目 ( 95 预 12和G19990 6 480 0 )
关键词
聚苯乙烯薄膜
拉伸力学
真空浇铸
制备
力学性能
mechanical behaviour
vacuun cast polystyrene film
entagled critical concentration
