胺基封端的长碳链聚酯制备及其对聚乳酸增韧研究  

Preparation of Amine-terminated Long Carbon Chain Polyester and Its Toughening of Polylactic Acid

作　　者：向程 Xiang Cheng(School of Chemistry and Chemical Engineering,Jiujiang University,Jiangxi,332005)

机构地区：[1]九江学院化学化工学院,江西332005

出　　处：《当代化工研究》2025年第5期90-92,共3页Modern Chemical Research

基　　金：江西省教育厅科学技术研究项目“高结晶性聚乳酸共聚物的合成及其应用研究”(项目编号:GJJ21184)。

摘　　要：传统的聚乳酸材料韧性低的缺点,严重影响了聚乳酸的应用范围。以油酸甲酯、乙二胺、过氧化氢为原料,通过两步反应生成胺基封段长碳链聚酯,将反应得到的胺基封段长碳链聚酯与L-丙交脂在一定条件下反应制备三嵌段聚合物。对合成的三嵌段聚酯进行热学性能和力学性能的测试,测试结果表明,合成的三嵌段聚酯相较于聚乳酸本身具有更高的玻璃化温度,并且三嵌段聚酯的弹性模量更小,断裂伸长率更大。综上所述,所合成的三嵌段聚酯比聚乳酸有着更好的耐热性和韧性,扩展了聚乳酸的应用领域。Traditional polylactic acid materials have the shortcomings of low resilience which seriously affects the application range of poly-lactic acid.Two-step reaction of methyl oleate,ethylenediamine,and hydrogen peroxide to produce an amine-segmented,long carbon chain polyes-ter,the amine-sealed long-chain polyester obtained by the reaction was reacted with L-lactide under certain conditions to prepare triblock polymers.The thermal and mechanical properties of the synthesized triblock polyester were tested,and the test results showed that the synthesized triblock poly-ester had a higher glass transition temperature than the polylactic acid itself,and the elastic modulus of the triblock polyester was smaller and the elongation at break was larger.In summary,the synthesized triblock polyester has better heat resistance and toughness than polylactic acid,which expands the application field of polylactic acid.

关 键 词：聚乳酸 长碳链聚酯 增韧 耐热性 

分 类 号：TQ3[化学工程]