PC与PCCD相容性的研究

STUDY OF PC AND PCCD′S MISCIBILITY

用溶解度参数法包括三维溶解度参数基团贡献计算法、反气相色谱法以及差示扫描量热(DSC)法研究了聚碳酸酯(PC)和聚(1,4-环己烷二甲酸-14,-环己烷二甲醇)酯(PCCD)的相容性。研究了色散、极性和氢键作用力对PC和PCCD相容性的影响。用基团贡献计算法得到PC和PCCD的三维溶解度参数非常接近,并且每一维度(即色散,极性,氢键)的溶解度参数都很接近;反气相色谱法结果显示PC的溶解度参数为18.1(J/cm3)1/2,PCCD的溶解度参数为17.3(J/cm3)1/2,两者的溶解度参数也很接近;DSC结果显示两者共混物只有一个玻璃化转变温度(Tg),且在两单组分Tg之间。这三种方法都证实了PC和PCCD是完全相容的。

The method of solubility parameter including group contribution calculation method of three dimensional solubility parameter, IGC and DSC was used to study miscibility of polymer PC and PCCD. The effect of dispersion, polar and hydrogen bonding interactions between molecules on the miscibility of PC and PCCD were considered. The three dimensional solubility parameters were calculated by using group contribution method, solubility parameters of each dimension （dispersion, polar and hydrogen bonding） were very close. IGC showed δpc = 18.1 （J/cm^3 ）^1/2 ,δPCCD = 17.3 （ J/cm^3 ）^ 1/2 The two parameters were very close. DSC showed PC and PCCD blends had only a Tg, and between PC＇s Tg and PCCD＇s Tg. The three method including group contribution method,IGC and DSC demonstrated that PC and PCCD were compatible.