PBS／鞣花酸酯化物复合材料的性能研究  

Research on Properties of PBS/Ellagic Acid Esterification Product Composites

作　　者：宋洁[1] 张敏[1] 袁慧[1] 许小玲[1] 

机构地区：[1]陕西科技大学,教育部轻化工助剂化学与技术重点实验室,西安710021

出　　处：《工程塑料应用》2015年第10期13-17,共5页Engineering Plastics Application

基　　金：“863”计划项目子课题项目(2011AA100503);陕西省教育厅专项科研计划项目(15JK1090);陕西科技大学科研启动基金项目(BJ14-01)

摘　　要：利用五倍子单宁酸氧化制备鞣花酸,通过响应曲面法优化了合成工艺。采用乙酰氯对其进行外酯化,并与可生物降解材料聚丁二酸丁二酯(PBS)复合,探讨了鞣花酸酯化物(EAE)对PBS结晶形态、热稳定性、力学性能和亲疏水性的影响。结果表明,鞣花酸合成的最佳工艺条件为过硫酸铵0.6 g、碱溶p H=9、反应时间24 h,在此条件下鞣花酸的产量为1.34 g/10 g五倍子粉末。傅里叶变换红外光谱(FTIR)分析表明,鞣花酸及其酯化物均为目标合成物。复合材料FTIR分析表明EAE与PBS只进行了物理共混,两者相似相容。同时,EAE对PBS起到了成核剂的作用,使得复合材料的球晶尺寸变小,热稳定性、拉伸强度、疏水性较PBS均有所提高,断裂伸长率相应降低。The ellagic acid was prepared by tannic acid from galla chinensis oxidation, the synthesis process was optimized by response surface methodology. Using acetyl chloride, the ellagic acid was esterified, and the ellagic acid esters （EAE） was compounded with poly（butylene succinate） （PBS）, the effects of the EAE on the crystallizing morphology, thermal stability, mechanical properties and hydrophilic and hydrophobic characteristics of PBS were discussed. The results show that the ellagic acid synthesis optimum conditions are ammonium persulfate 0.6 g, alkali solution pH=9, reaction time 24 h, and the yield of ellagic acid is 1.34 g/10 g galla powder. FTIR analysis illustrates the ellagic acid and EAE all are the target composition. FTIR analysis of the composite show that EAE is only physical blended with PBS, the polarity is similar and makes compatibility. EAE plays the role as a nucleating agent to PBS, which makes the spherulite size of the composite becomes smaller, and the thermal stability, tensile strength, hydrophobicity are all improved higher than PBS, but the elongation at break decreases accordingly.

关 键 词：五倍子 鞣花酸 PBS 复合材料 性能 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]