文献类型：期刊文献

英文题名：Development of Biodegradable Polyamide 4/Polyvinyl Alcohol/Poly(lactic acid) Multilayer Films with Tunable Water Barrier Property and Superior Oxygen Barrier Property

作者：Zhang, Di[1,2];Zhan, Fangke[1,2];Wang, Ziying[1,2];Wang, Li[1,2,3];Qiu, Yongjun[1,2,3];Chen, Tao[2,4];Wang, Yibing[1,2,3];Zhao, Liming[1,2,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Biobased Mat Engn, China Natl Light Ind, Shanghai 200237, Peoples R China;[3]Shanghai Collaborat Innovat Ctr Biomfg Technol SCI, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China

年份：2023

卷号：5

期号：6

起止页码：3979

外文期刊名：ACS APPLIED POLYMER MATERIALS

收录：;EI(收录号：20232314194650);WOS:【SCI-EXPANDED(收录号:WOS:001005213300001)】；

基金：This work was supported by the Research and Development of Technical Standards for Bio-based Material Polybutyrolactam Project (21DZ2205900), the National Key R&D Program of China (grant number 2022YFC2104500), the 111 Project (B18022), and the Open Project Funding of the State Key Laboratory of Bioreactor Engineering, ECUST (ZDXM2019).

语种：英文

外文关键词：biodegradable polymers; multilayer films; physicalproperties; tunable water barrier; packaging industry

摘要：Poor mechanical and barrier properties of biopolymer-basedpackagingmaterials limit their widespread applications. The combination ofbiopolymers with different nature is considered an effective strategyto obtain complementary properties, but this method is always restrictedby the incompatibility between matrices. To combine polyamide 4 (PA4)and poly-(lactic acid) (PLA), which present excellent oxygen barrierand water barrier properties, respectively, this study puts forwardthe use of polyvinyl alcohol (PVA) as a bonding layer to connect themand form the PA4/PVA/PLA multilayer films by the layer-by-layer solutioncasting method. PA4 and PLA are successfully linked through hydrogenbonding and electrostatic interactions with PVA. The cross-sectionmorphology and peel test results proved the good interlayer adhesionbetween layers. After combination with PA4, the tensile strength,elongation at break, and oxygen barrier properties of PLA were greatlyimproved. The oxygen barrier of the PA4/PVA/PLA multilayer film wasmore than 260 times higher than that of the PLA monolayer. PA4/PVA/PLAfilms presented better thermal stability, transparency, and waterbarrier properties compared to the PA4 monolayer. Besides, PA4/PVA/PLAmultilayer films presented a one-way water barrier characteristic,which made them effective in avoiding the condensation phenomenonwhen used as fruit or vegetable packaging. The study improved thepoor interfacial compatibility between PA4 and PLA and provided asimple strategy for developing sustainable packaging with excellentperformance.