The Influence of Additives on Crystallization of Polyvinyl Chloride

作     者：刘亚群 张超灿 LIU Yaqun 1,2 ,ZHANG Chaocan 1 (1.Institute of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;2.Department of Applied Chemistry,College of Sciences,Wuhan University of Technology,Wuhan 430070,China)

作者机构：Institute of Materials Science and EngineeringWuhan University of Technology 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2007年第22卷第2期

页      面：271-275页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Scientific and Technological Project of Hubei Province(No.2002AA105A01) 

主　　题：polyvinyl chloride crystalline structure differential scanning calorimetry wide angle X-ray diffraction 

摘      要：Acetanilide, adipic acid and potassium hydrogen phthalate were chosen as nucleating agents of polyvinyl chloride（PVC）, and their effects on PVC crystallization were studied by differential scanning calorimetry, wide angle X-ray diffraction and fourier transform infrared spectroscopy. The experimental results indicate that all of the three additives are compatible with PVC to some extent, but adipic acid＇s compatibility with PVC is less satisfactory. The three additives can improve PVC crystallinity, and acetanilide can decrease PVC glass transition temperature（T）and narrow PVC melting range, while adipic acid and potassium hydrogen phthalate rise T of PVC and widen its melting range. All additives do not affect PVC crystal system and all g samples are in orthorhombic system. All additives can improve （200）, （110）, （210） and （201, 111） planes growing. Moreover, acetanilide and adipic acid can shrink PVC spacings and improve the crystal perfection of PVC, but potassium hydrogen phthalate swells spacings and reduces the perfection of PVC crystal.