PBS/ESO共混物的力学和流变学性能  

Mechanical and Rheological Properties of Polybutylene Succinate / Epoxidized Soybean Oil Blends

作　　者：赵永青[1] 陈福泉[1] 吴正环[1] 冯彦洪[1] 晋刚[1] 瞿金平[1] 

机构地区：[1]华南理工大学聚合物新型成型装备国家工程中心∥聚合物成型加工工程教育部重点实验室,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2013年第10期103-107,116,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：NSFC-广东省人民政府自然科学联合基金资助项目(U1201242);教育部新世纪优秀人才支持计划项目(NCET-11-0152);广州市珠江科技新星专项(2011J2200058)

摘　　要：将新型增塑剂环氧大豆油(ESO)与聚丁二酸丁二醇酯(PBS)进行熔融共混,制得PBS/ESO共混物,研究了ESO含量对PBS力学、流变学性能以及相形态的影响.结果表明:ESO可显著提高PBS的韧性;随ESO含量增加,共混物的断裂伸长率、冲击强度先增大后减小,在ESO含量为5.0%时达到最大值,分别为PBS的15.0倍和1.4倍,共混物的拉伸强度、拉伸模量、弯曲强度、弯曲模量则随之减小;ESO能明显降低PBS熔体的黏度,使其在更低的角频率下呈现出剪切变稀的流变行为;ESO与PBS是部分相容的,较高ESO含量的共混物会发生明显的相分离现象.In the investigation,the melt blending of polybutylene succinate （PBS） and a novel plasticizer epoxidized soybean oil （ESO） was carried out by using an internal mixer,and a series of PBS/ESO blends were thus prepared.Moreover,the effects of the ESO content on the mechanical and rheological properties of PBS/ESO blends as well as on their morphologies were discussed.The results show that （1） the introduction of the ESO significantly improves the tensile and impact toughness of the PBS; （2） with the increase of the ESO content,the elongation-at-break and the impact strength of the PBS/ESO blends first increase and then decrease,and at the ESO content of 5％,they both reach the maximums which are respectively 15.0 and 1.4 times those of PBS; （3） the tensile strength,tensile modulus,flexural strength,and flexural modulus of the PBS/ESO blends decrease with the increase of the ESO content ; （4） the addition of ESO significantly decrease the complex viscosity of the molten PBS,thus resulting in an earlier shear-thinning transition of PBS ; and （5） the PBS/ESO blend with a higher ESO content exhibits a distinct phase separation,which indicates that the ESO/PBS blend is a partially miscible system.

关 键 词：聚丁二酸丁二醇酯 环氧大豆油 熔融共混 力学性能 流变学性能 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]