KH-550改性的聚丁二酸-共-对苯二甲酸丁二醇酯/氧化镁/银复合薄膜的制备及性能  

Preparation and properties of KH-550-modified poly(butylene succinate-co-terephthalate)/magnesium oxide/silver composite films

作　　者：孟祥亮 武钰铃 曹成林[1,2] 张杰 Meng Xiangliang;Wu Yuling;Cao Chenglin;Zhang Jie(College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024;Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education,Taiyuan University of Technology,Taiyuan 030024)

机构地区：[1]太原理工大学材料科学与工程学院,太原030024 [2]太原理工大学新材料界面科学与工程教育部重点实验室,太原030024

出　　处：《化工新型材料》2025年第2期252-257,共6页New Chemical Materials

摘　　要：采用γ-氨丙基三乙氧基硅烷(KH-550)对MgO/Ag纳米粒子进行表面改性,并将改性纳米粒子加入聚丁二酸-共-对苯二甲酸丁二醇酯(PBST)基质中制备改性PBST/MgO/Ag复合膜,并对复合膜的微观形貌、力学性能、阻隔性能、抗菌性能和食品保鲜性能进行研究。结果表明:硅烷偶联剂的加入明显改善了纳米粒子与PBST基质的相容性,薄膜的力学性能和阻隔性能显著提高。此外,复合薄膜还具有优异的抗菌性能和食品保鲜性能。对金黄色葡萄球菌(S.aureus)、大肠杆菌(E.coli)和乙型副伤寒沙门菌(S.Paratyphi B)的抑菌率均超过99%。在保鲜实验,使用3%改性抗菌剂所制复合膜(K5-PMA-3)包裹的樱桃番茄的质量损失率仅为5.6%。所有这些性能表明,制备的生物膜作为食品包装薄膜具有巨大的应用潜力。MgO/Ag nanoparticles were surface modified usingγ-aminopropyltriethoxysilane(KH-550),and then the modified nanoparticles were incorporated into poly(butylene succinate-co-terephthalate)(PBST)matrix to prepare modified PBST/MgO/Ag composite films.The micro-morphology,mechanical properties,barrier properties,antibacterial properties and food preservation properties of the composite films were investigated.The results showed that the addition of silane coupling agent significantly improved the compatibility of nanoparticles with PBST matrix,and the mechanical and barrier properties of the films were significantly improved.In addition,the composite films exhibited excellent antibacterial and food preservation properties.The inhibition rates against S.aureus,E.coli and S.Paratyphi B exceeded 99%.In the freshness preservation experiment,the quality loss rate of cherry tomatoes wrapped with K5-PMA-3 film was only 5.6%.All these properties indicated that the prepared biofilm had a great potential to be used as a food packaging film.

关 键 词：聚丁二酸-共-对苯二甲酸丁二醇酯 氧化镁 银 表面改性 抗菌活性 食品包装 

分 类 号：TQ630[化学工程—精细化工]