文献类型：期刊文献

英文题名：High content corn starch/Poly (butylene adipate-co-terephthalate) composites with high-performance by physical-chemical dual compatibilization

作者：Li, Chengqiang[2];Chen, Fangping[1,2,3];Lin, Bowen[2];Zhang, Chenhao[2];Liu, Changsheng[1,2,3]

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;[3]Frontiers Sci Ctr Materiobiol & Dynam Chem, Shanghai 200237, Peoples R China

年份：2021

卷号：159

外文期刊名：EUROPEAN POLYMER JOURNAL

收录：;EI(收录号：20213610861270);WOS:【SCI-EXPANDED(收录号:WOS:000713238600003)】；

基金：This investigation was supported by Shanghai Science and Tech-nology Agriculture Project (No. 202002080002F01474) , National Key Research and Development Program of China (No.2016YFC1102900) , National Natural Science Foundation of China (No. 51772100, 32171342) , 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：4,4'-methylene diphenyl diisocyanate; Polyurethane prepolymer; Starch/PBAT composites; High starch content; Biodegradable materials

摘要：The corn starch/Poly (butylene adipate-co-terephthalate) (PBAT) composites with high starch content and high mechanical strength were prepared by in-situ reaction with 4,4'-methylene diphenyl diisocyanate (MDI) as bifunctional crosslinker and polyurethane prepolymer (PUP) as starch modifier and physical compatibilizer. We studied the effects of different MDI contents on the mechanical properties, morphology, thermodynamics, rheology, water absorption and heat-sealing properties of starch/PBAT composites. The results showed that MDI was an effective reactive crosslinker, promoting the interfacial adhesion between modified starch and PBAT. The hydrophobicity, thermal stability, heat-sealing performance and mechanical properties of Starch/PBAT composites enhanced with the increased contents of MDI. The tensile strength and elongation at break of composites with 60% starch content reached 10.95 MPa and 461.23 %. The potent interfacial compatibility of starch/PBAT composites was mainly attributed to the chemical cross-linking of MDI and the physical compatibilization of PUP. Physical-chemical dual compatibilization in our study provided an effective strategy for preparing biomass based polymers.