摘要
研究制备添加扩链剂(ADR)的聚丁二酸丁二醇酯/聚己二酸-对苯二甲酸丁二醇酯/扩链剂(PBS/PBAT/ADR)共混可降解包装薄膜,探究ADR含量对共混薄膜结晶结构及性能的影响。结果表明:ADR的引入未改变PBS与PBAT的晶型结构,但影响共混薄膜结晶行为。随着ADR含量的增加,共混薄膜结晶度呈先升后降的趋势,在0.8%时达到最大。添加0.8%ADR的共混薄膜表面极性及亲水性显著提升,对应最小水接触角与最大表面能。ADR过量时,共混薄膜表面极性下降,具备最低透氧系数,阻隔性能最优。力学性能随ADR含量的增加呈先降后升的趋势。添加0.8%ADR的共混薄膜可有效延缓果实腐败,表明其在可降解包装领域具有良好应用潜力。
Degradable packaging films of poly(butylene succinate)/poly(butylene adipate-co-terephthalate)/chain extender(PBS/PBAT/ADR)added with chain extender contents were prepared,and the effects of ADR content on the crystalline structure and properties of the blended films were investigated.The results showed that the introduction of ADR did not change the crystalline structures of PBS and PBAT,but affected the crystallization behavior of the blended films.As the ADR content increased,the crystallinity of the blended films first increased and then decreased,reaching the maximum at 0.8%.The blended film with 0.8%ADR exhibited significantly enhanced surface polarity and hydrophilicity,corresponding to the smallest water contact angle and the highest surface energy.When the ADR content was excessive,the surface polarity of the blended film decreased,while it achieved the lowest oxygen transmission coefficient and the best barrier performance.The mechanical properties of the blended films first decreased and then increased with the increase of ADR content.The blended film with 0.8%ADR effectively delayed fruit decay,indicating its good application potential in the field of degradable packaging.
作者
谢嘉宜
林志浩
朱海霞
杨雷
张婷
刘晓暄
XIE Jiayi;LIN Zhihao;ZHU Haixia;YANG Lei;ZHANG Ting;LIU Xiaoxuan(Guangdong Province Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region,Guangdong Provincial Engineering Technology Research Center for Eco-Environmental Protection and Solid Waste Utilization in Northern Guangdong,School of Chemistry and Civil Engineering,Shaoguan University,Shaoguan 512005,China;School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,China)
出处
《塑料科技》
北大核心
2025年第12期179-183,共5页
Plastics Science and Technology
基金
韶关学院校级科研项目(SY2023KJ14)
2024年度韶关市社会发展科技协同创新体系建设项目(P0000876048)。
