壳核结构增韧剂对热塑性共聚酯／聚乙烯辛烯弹性体共混体系增容与增 …

研究了马来酸酐接枝的聚乙烯辛烯弹性体／半结晶性塑料共混物（ＴＰＥｇ）对热塑性共聚聚酯（ＰＥＴＧ）／聚乙烯辛烯弹性体（ＴＰＥ）共混体系增容增韧作用的影响。马来酸酐接枝物显著地改善了ＰＥＴＧ与ＴＰＥ之间的相容性，导致ＴＰＥ分散相颗粒细化，并促使分散相颗粒面间距等于甚至小于实现脆韧转变所需的临界面间距。在固定ＰＥＴＧ基体含量为８５ｗｔ％的前提下，当ＴＰＥｇ在１５％分散相中的含量由２０％增加到３０％时，即

THE EFFECT OF A CORE-SHELL TOUGHNER ON COMPATIBILIZATION OF THERMAL PLASTIC COPOLYESTER/POLYETHYLENE\|OCTENE ELASTOMER BLENDS

A maleic anhydride grafted polyethylene\|octene rubber/semi\|crystalline polymer blend(TPEg)was adopted as a compatibilizer to compatibilize amorphous copolyester (PETG)/polyethylene\|octene rubber (TPE) blends.The presence of maleic anhydride group on the TPEg increases the compatibility between PETG and TPE and decreases the dispersed phase size.At a fixed PETG content of 85wt%,a sharp brittle\|tough transition occurs when the TPEg content in the dispersed phase increases from 20 to 30 wt%,namely that the TPEg content in the blend increases from 3 to 4 5 wt%.