新型醇醚羧酸盐对PPCP/PBAT复合膜的增塑效果研究  

Plasticizing Effect of Novel Alcohol Ether Carboxylate on PPCP/PBAT Composite Film

作　　者：詹伟招 罗文翰 王梁彬 ZHAN Wei-zhao;LUO Wen-han;WANG Liang-bin(College of Light Industry and Food Science,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;Food Green Packaging Engineering Technology Research and Development Center,Guangzhou 510225,China;Maoming Green Chemical Research Institute,Guangdong Maoming 525030,China)

机构地区：[1]仲恺农业工程学院轻工食品学院,广州510225 [2]广东省食品绿色包装工程技术研发中心,广州510225 [3]茂名绿色化工研究院,广东茂名525030

出　　处：《包装工程》2023年第19期98-103,共6页Packaging Engineering

基　　金：茂名市科技计划项目(2021S0007)。

摘　　要：目的 比较不同质量分数新型绿色增塑剂醇醚羧酸盐(PPEC)对PPCP/PBAT复合膜的增塑效果。方法 采用实验室自制的PPEC,以PPCP与PBAT为基体材料,经双螺杆造粒后吹膜制备出PPCP/PBAT/PPEC复合膜,并对其进行微观形貌、热性能、光学性能、力学性能等多方面的表征。结果 复合膜截面由明显的海岛形貌与相分离界面逐渐变得光滑平整,红外图证明了PPCP与PBAT的存在,且伴随着游离态羟基向结成氢键的转变。复合膜的玻璃化转变温度逐渐降低,透光率呈上升趋势且雾度呈下降趋势,但变化幅度均不大,PPEC有效提高了PPCP与PBAT的界面相容性。复合膜断裂伸长率达到了520%,弹性模量降低到618 MPa,屈服强度降低到4.83 MPa。结论 PPCP/PBAT/PPEC复合膜具有良好的增塑效果,且PPEC的最佳掺量为2.0%。The work aims to compare the plasticizing effect of different mass fractions of alcohol ether carboxylate(PPEC),a novel green plasticizer,on PPCP/PBAT composite films.The PPEC was made in the laboratory.The PPCP/PBAT/PPEC composite film was prepared by blowing the film after twin screw with PPCP and PBAT as the base materials.The composite film was characterized from various aspects such as microscopic morphology,thermal proper-ties,optical performance and mechanical properties.The cross section of the composite film gradually became smooth and flat from the obvious island morphology and phase separation interface.The FTIR spectra of the composite film demon-strated the presence of PPCP and PBAT,which was accompanied with the transition from the free state hydroxyl group to the conjugated hydrogen bond.The glass-transition temperature of the composite film decreased gradually.The light transmittance tended to increase and haze tended to decrease,but the changes were not significant.PPEC effectively im-proved the interfacial compatibility between PPCP and PBAT.The elongation at break of the composite film reached 520%,and the elasticity modulus and yield strength of the composite film were reduced to 618 MPa and 4.83 MPa,re-spectively.Therefore,PPCP/PBAT/PPEC composite film has good plasticizing effect,and the optimal dosing of PPEC is 2.0%.

关 键 词：醇醚羧酸盐 PPCP PBAT 绿色增塑剂 

分 类 号：TQ423.31[化学工程]