聚丁二酸-共-对苯二甲酸丁二醇酯/氧化镁复合薄膜的制备及性能  

Preparation and properties of poly(butylene succinate-co-terephthalate)/magnesium oxide composite film

作　　者：张佳宁 郭睿劼[1,2] 张杰[1,2] Zhang Jianing;Guo Ruijie;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》2024年第3期253-256,261,共5页New Chemical Materials

基　　金：江苏省高校丝绸工程重点实验室(KJS2058);山西省“1331工程”(晋政发[2021]3号)。

摘　　要：以聚丁二酸-共-对苯二甲酸丁二醇酯(PBST)为基体,纳米氧化镁(MgO NPs)为抗菌剂,通过溶剂挥发法制备了PBST/MgO纳米复合薄膜,并探讨了复合薄膜在食品包装中的应用。研究了MgO NPs对纳米复合薄膜的机械性能、水蒸汽透过率(WVP)、氧气透过率(OTR)和紫外阻隔性能的影响。结果表明:MgO NPs的加入改善了PBST基体的力学性能和阻隔性能。与PBST薄膜相比,复合膜的拉伸强度和断裂伸长率分别提高了43.7%和32.2%,水蒸汽透过率和氧气透过率分别降低了28.1%和23.6%,并具有良好的紫外阻隔性能。当MgO NPs质量含量为5%时,复合膜的性能最佳。Poly(butylene succinate-co-terephthalate)(PBST)/magnesium oxide(MgO)nanocomposite films were prepared via a solvent evaporation method using PBST as a matrix and MgO NPs as an antibacterial agent.The application of PBST/MgO nanocomposite films in food packaging was explored.The effects of MgO NPs on the mechanical properties,water vapor transmittance(WVP),oxygen transmittance(OTR)and UV barrier properties of nanocomposite films were investigated.The results showed that the addition of MgO NPs improved the mechanical and barrier properties of PBST matrix.Compared with PBST film,the tensile strength and elongation at break of the composite film were increased by 43.7%and 32.2%,respectively,and the WVP and OTR were reduced by 28.1%and 23.6%,respectively.When the content of MgO NPs was 5wt%,the composite film had the best performance.

关 键 词：聚丁二酸-共-对苯二甲酸丁二醇酯 纳米氧化镁 溶剂挥发法 食品包装 

分 类 号：TQ630[化学工程—精细化工]