中国塑料2026，Vol.40Issue(8)：37-42,6.DOI:10.19491/j.issn.1001-9278.2026.08.007
PBAT与塑化剂对PBAT/PLA/淀粉共混薄膜力学与延时边封性能的影响
Effects of PBAT content and plasticizer on mechanical and delayed edge-sealing properties of PBAT/PLA/Starch blended films
摘要
Abstract
Poly(butylene adipate-co-terephthalate)(PBAT)/polylactic acid(PLA)/starch blends were prepared via melt blending and subsequently processed into films.The effects of PBAT content and plasticizer type on the mechanical prop-erties and delayed edge-sealing performance of the resulting films were systematically investigated.Mechanical testing re-vealed that the 1#formulation,which contained the lowest starch content,exhibited the highest tensile strength,with val-ues gradually decreasing as starch loading increased.Replacing the PBAT polyester with A400 LF,characterized by a lower melt flow index,substantially enhanced the tensile strength of the films,and the tensile properties were found to correlate strongly with the degree of plasticization.Upon introducing thermoplastic starch(TPS),both longitudinal and transverse tensile strengths declined;however,the longitudinal tear strength reached a maximum of 7 032 mN.Delayed edge-sealing tests indicated that TPS-containing samples achieved optimal performance,with an edge-sealing strength re-tention rate of 98.5%at 15 days(R15d)and the highest hand-tear and edge-sealing ratings(both grade 5)at the same interval.Scanning electron microscopy further confirmed the superior edge-sealing performance of TPS-modified films,revealing finely dispersed starch particles with small sizes.关键词
聚对苯二甲酸己二酸丁二醇酯/塑化剂/淀粉/力学性能/延时边封Key words
poly(butylene terephthalate adipate)/plasticizer/starch/mechanical property/delayed edge sealing分类
化学化工引用本文复制引用
陈业中,陈保登,郭昊威,麦开锦,李禹函,张怡..PBAT与塑化剂对PBAT/PLA/淀粉共混薄膜力学与延时边封性能的影响[J].中国塑料,2026,40(8):37-42,6.基金项目
重点新材料研发及应用国家科技重大专项(2024ZD0603600) （2024ZD0603600）
