Poly(lactic acid)/Poly(butylene adipate-co-terephthalate)films with simultaneous high oxygen barrier and fast degradation properties  

作　　者：Mengjing Yang Yuxi Mao Penghui Zhang Jie Li Zeming Tong Zhenguo Liu Yanhui Chen 

机构地区：[1]Institute of Flexible Electronics,Northwestern Polytechnical University,Xi'an,710072,China [2]Key Laboratory of Flexible Electronics of Zhejiang Province,Ningbo Institute of Northwestern Polytechnical University,218 Qingyi Road,Ningbo,315103,China [3]School of Chemistry and Chemical Engineering,Shaanxi Key Laboratory of Macromolecular Science and Technology,Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology,Northwestern Polytechnical University,Xi'an 710072,China

出　　处：《Green Energy & Environment》2025年第1期1-10,共10页绿色能源与环境（英文版）

基　　金：financial support of this work by the National Natural Science Foundation of China(Nos.22378332,52003219);the Open Fund of Zhejiang Key Laboratory of Flexible Electronics(No.2022FE008);the Natural Science Foundation of Ningbo(NO.2022J058);Ministry of Industry and Information Technology high quality development project(TC220A04A-206).

摘　　要：Although poly(lactic acid)(PLA)is a good environmentally-friendly bio-degradable polymer which is used to substitute traditional petrochemical-based polymer packaging films,the barrier properties of PLA films are still insufficient for high-barrier packaging applications.In this study,oxygen scavenger hydroxyl-terminated polybutadiene(HTPB)and cobalt salt catalyst were incorporated into the PLA/poly(butylene adipate-co-terephthalate)(PLA/PBAT),followed by melting extrusion and three-layer co-extrusion blown film process to prepare the composite films.The oxygen permeability coefficient of the composite film combined with 6 wt%oxygen scavenger and 0.4 wt%catalyst was decreased significantly from 377.00 cc·mil·m^(-2)·day^(-1)·0.1 MPa^(-1) to 0.98 cc·mil·m^(-2)·day^(-1)·0.1 MPa^(-1),showing a remarkable enhancement of 384.69 times compared with the PLA/PBAT composite film.Meanwhile,the degradation behavior of the composite film was also accelerated,exhibiting a mass loss of nearly 60%of the original mass after seven days of degradation in an alkaline environment,whereas PLA/PBAT composite film only showed a mass loss of 32%.This work has successfully prepared PLA/PBAT composite films with simultaneously improved oxygen barrier property and degradation behavior,which has great potential for high-demanding green chemistry packaging industries,including food,agricultural,and military packaging.

关 键 词：Barrier property Oxygen scavenging Blow molding Eco-packaging Degradable composite film 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]