PCL/PPC共混膜性能研究  

Performance of PCL/PPC Blend Film

作　　者：云雪艳 赵淑环[1,2] 梁晓红[1] 张晓燕[1] 靳烨[1] 董同力嘎 

机构地区：[1]内蒙古农业大学,呼和浩特010018 [2]内蒙古伊利集团,呼和浩特010018

出　　处：《包装工程》2015年第11期46-50,共5页Packaging Engineering

基　　金：国家自然科学基金(51163010);内蒙古草原英才项目(2011)

摘　　要：目的提高聚己内酯(PCL)薄膜对氧气及水蒸汽的阻隔性。方法利用双螺杆挤出机,对PCL与聚碳酸亚丙酯(PPC)进行共混挤出制备薄膜材料,并对PCL/PPC共混膜的相容、热学、阻隔及力学等性能进行测量。结果当PPC含量较少或较多时,PCL与PPC具有一定的相容性,而在中间含量时出现了相分离;PCL/PPC薄膜对氧气的透过系数和水蒸气的透过率随着PPC含量的增加而降低;PPC的加入提高了PCL的强度及模量,在共混比例较小时,共混膜有相对较好的抗撕裂性能。结论添加适量的PPC能使PCL表现出更好的氧气和水蒸汽阻隔性及较好的力学性能。The study aimed to improve barrier of PCL film against oxygen and water vapor. The PCL/PPC composite films were prepared by melt blend via twin-screw extrusion. The miscibility, thermology, barrier and mechanical properties of the PCL/PPC composite film were investigated. With the addition of a small or a large amount of PPC, the PCL/PPC blends showed good miscibility. But blends with moderate PPC contents presented phase separation. The penetration coefficient of oxygen and the penetration rate of water vapor showed linear decrease with the increase of PPC content. With addition of PPC, PCL presented higher modulus and strength. The composite film showed better tear resistance at low blending ratio. The PCL film exhibited much better barrier properties against oxygen and water vapor and relative higher mechanical strength with suitable addition of PPC.

关 键 词：PCL/PPC共混膜 相容性 热学性能 阻隔性能 力学性能 

分 类 号：TS206.4[轻工技术与工程—食品科学]