淀粉含量对PBAT复合材料性能的影响  

Effect of Starch Content on Material Properties of PBAT Composites

作　　者：蒋晓威 李宗男 胡蝶 潘家豪 李娜 马立波[1] 李珊珊[1] Jiang Xiaowei;Li Zongnan;Hu Die;Pan Jiahao;Li Na;Ma Libo;Li Shanshan(Institute of Chemical and Pharmaceutical Engineering,Changzhou Vocational Institute of Engineering,Changzhou 213164,China)

机构地区：[1]常州工程职业技术学院化工与制药工程学院,江苏常州213164

出　　处：《山东化工》2022年第7期26-28,32,共4页Shandong Chemical Industry

基　　金：常州工程职业技术学院校科研基金(11130900120006,30110700819004-4-2/005/005);常州工程职业技术学院教育教学改革研究项目(30130500121008);常州工程职业技术学院人才培养改革重点项目;常州工程职业技术学院校企协同育人项目。

摘　　要：PBAT作为一种热塑性易降解塑料,受到研究者广泛关注,但其较高的成本限制其应用。以淀粉改性PBAT,期望获得成本低、性能好的复合材料。结果表明:随着淀粉含量的增加,PBAT/淀粉复合材料断裂伸长率先降低后增加,拉伸强度和拉伸断裂应力呈现一定程度的下降趋势;冲击强度随淀粉含量的增加呈现大幅度上升趋势,当淀粉含量50%时,PBAT/淀粉复合材料冲击强度升高了165.3%;淀粉对PBAT/淀粉复合材料的维卡软化温度影响较大,随着淀粉含量的增加,维卡软化点下降20.8℃;淀粉中羟基的存在也极大影响复合材料对水分的吸收。As a thermoplastic easily degradable plastic,PBAT has received extensive attention from researchers,but its high cost limits its application.In this paper,starch modified PBAT was studied,and the composite was expected with low cost and good performance.The results showed that,with the increase of starch content,the elongation at break of PBAT/starch composites decreased at first and then increased,and the tensile strength continued to decrease.The impact strength showed a significant upward trend with the increase of canonical content,the impact strength of PBAT/starch composites increased by 165.3%;starch had a great influence on the Vicat softening temperature of PBAT/starch composites,with the increase of starch content,the Vicat softening point decreased by 20.8℃;the presence of hydroxyl groups in starch also greatly affects the absorption of moisture of the composite material.

关 键 词：PBAT 淀粉 冲击强度 拉伸强度 复合材料 

分 类 号：O631.2[理学—高分子化学]