摘要
研究了ＰＣ／ＰＳ共混体系及其增容体系的透光性能和双折射，结果表明，ＰＣ／ＰＳ共混体系虽是一个不相容体系，但仍然是一个透明体系。此外，ＰＣ是正双折射材料，ＰＳ为负双折射材料，将两者共混后，可部分低消其双折射，当ＰＣ∶ＰＳ＝４０∶６０左右时，可使共混物的双折射率趋近于零，形成所谓的“零双折射材料”。ＰＣ／ＰＳ共混物中加了辐射接枝共聚物ＰＣｇＰＳ后，由于共混物的相容性提高，共混物组分间的这种正负双折射补偿效应有所增强。
Birefringence in polymeric materials used for optical applications represents non isotropic optical properties, and therefore undesired, but cannot always be avoided. The results show that PC/PS blends are transparent though they are immiscible. A new method to obtain birefringence free polymer without sacrificing orientation in materials was proposed. This method is achieved by combining suitable amounts of PC and PS in the form of a blend. The observed drastic reduction in birefringence is the result of the compensation of positive and negative contributions to the overall birefringence.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1999年第1期104-107,共4页
Polymer Materials Science & Engineering
