文献类型：期刊文献

英文题名：Polyurethane prepolymer-modified high-content starch-PBAT films

作者：Zhang, Chenhao[2];Chen, Fangping[1,2];Meng, Wei[2];Li, Chengqiang[2];Cui, Ruihua[2];Xia, Zhean[1];Liu, Changsheng[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Engn Res Ctr Biomed Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2021

卷号：253

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20204409429924);WOS:【SCI-EXPANDED(收录号:WOS:000596863400001)】；

基金：This investigation was supported by Shanghai Science and Technology Agriculture Project(No. 202002080002F01474), National Key Research and Development Program of China (No. 2016YFC1102900), National Natural Science Foundation of China (No. 51772100), Shanghai Pujiang Program (16PJD015) and Joint Fund for equipment pre-research of the ministry of education (6141A02022618).

语种：英文

外文关键词：Biodegradable; Blown film; Modified starch; Polyurethane prepolymer; PBAT

摘要：We report a modified starch-poly(butylene adipate co-terephthalate) (PBAT) film (MSPF) prepared by extrusion blowing. Polyurethane prepolymer (PUP), was modified to the starch to enhance the compatibility. Different contents of amylose was blended with PBAT for improving mechanical strength and oxygen-barrier properties of MSPF. The microstructures, crystallinity, mechanical properties, oxygen-barrier capacity of MSPF were thoroughly evaluated. The result showed that MSPF with high starch content and excellent performances was successfully prepared with the synergy of PUP modification, amylose introduction and extrusion blowing. The crystallinity, hydrophobicity, oxygen-barrier properties and mechanical properties of MSPF increased with the increasing amylose content. The maximum tensile strength and elongation at break of MSPF reached 10.6 MPa and 805.6 %, respectively, even at the high starch content of 50 %. The result demonstrated that MSPF having excellent mechanical properties and oxygen-barrier properties could be use in the biodegradable field such as packaging materials, agricultural films and garbage bags.