摘要
通过示差扫描量热 (DSC)、广角X 射线衍射 (WAXD)和小角X 射线散射 (SAXS)在不同尺度范围研究了聚己内酯 (PCL) 苯乙烯 丙烯腈共聚物 (SAN)共混体系中PCL的结晶行为 .由于该体系中SAN的玻璃化温度高于PCL的熔点 ,从而导致了PCL的结晶行为是一种受限结晶 .研究结果表明PCL的结晶行为从宏观 (DSC结果 )、介观 (SAXS结果 )到微观 (WAXD结果 )都受到了高玻璃化温度SAN的限制 .
Confined crystallization behavior of poly( ε caprolactone) was studied by DSC,WAXD and SAXS in the mixtures of poly( ε caprolactone)(PCL) and poly(styrene co acrylonitrile)(SAN).Because the crystallization and melting temperatures of PCL are lower than the glass transition temperature of SAN,the experimental results indicated that multi scale crystallization behavior of PCL is confined in the mixtures.DSC measurements showed that the crystallinity of PCL is reduced with increasing the SAN concentration in mixtures.WAXD and SAXS results indicated that both PCL crystallite size and lamellae structure are disturbed by SAN with high glass transition temperature in the mixtures.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2005年第2期203-206,共4页
Acta Polymerica Sinica
基金
国家自然科学基金 (基金号 5 0 3 0 3 0 17
5 0 3 73 0 44
5 0 2 5 3 0 0 2 )
国家基础性重大项目基金 (基金号2 0 0 3CB615 60 0 )
杰出青年基金 (基金号 5 982 5 113 )资助项目
