摘要
分别用溶液法和熔融法制得聚氯乙烯（ＰＶＣ）与聚丙撑碳酸酯（ＰＰＣ）共混试样，用ＤＳＣ证明ＰＶＣ／ＰＰＣ不相容，但它们不相容的程度受分子量、共混比例及共混方法等因素的影响，并根据玻璃化转变温度（Ｔｇ）计算出溶液共混试样ＰＰＣ富相中ＰＶＣ的质量百分含量。用ＤＭＡ说明了ＮＢＲ／ＰＰＣ体系对ＰＶＣ／ＰＰＣ共混体系具有良好的增容作用，共混体系中ＰＰＣ的用量对共混体系相容性有一定程度的影响，加入适量的ＰＰＣ可提高共混试样的拉伸模量。
Poly(vinyl chloride) (PVC) was blended with carbon dioxdie copolymer, poly(propylene carbonate) (PPC), by solution and melt blending. By DSC, we proves them incompatible, but their incompatible degree is influenced by average molecular weight of PVC or PPC, blending ratio of PVC/PPC and blending method. In these kinds of incompatible solution blends of PVC/PPC, PVC mass percent in the PPC rich phase is calculated from the glass transition temperature of blends. Dynamic mechanical analysis (DMA) results indicate that NBR PPC elastomer is the good compatibilizer for PVC/PPC blends. And tension modulus of PVC/PPC blends with NBR PPC elastomer as coupling agent increases when PPC is added.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1997年第3期89-94,共6页
Polymer Materials Science & Engineering
基金
国家自然科学基金
关键词
聚氯乙烯
聚丙撑碳酸酯
相容性
共混
改性
poly(vinyl chloride), poly(propylene carbonate), compatibility, solution blend, melting blend
