摘要
采用溶剂铸膜法制备了聚己二酸/对苯二甲酸丁二酯(PBAT)/聚乳酸(PLA)/对苯二甲酸二辛酯(DOTP)/氧化锌(ZnO)复合膜材料,并通过硬脂酸改性纳米ZnO,探讨了不同粒径ZnO以及改性纳米ZnO对复合薄膜力学性能、热性能、疏水性能、耐抽出性能以及抗菌性能的影响。结果表明,通过硬脂酸代替纳米ZnO表面的羟基极性基团,复合膜的耐抽出性能提高。硬脂酸的长链烷基与高分子链的链纠缠改善了改性纳米ZnO与PBAT的相容性。随着ZnO粒径的减小以及改性纳米ZnO含量的增大,复合薄膜的热性能有所下降,但耐抽出性能提高。拉伸强度提高,最高达到13.8 MPa。复合膜的疏水性能得到改善,接触角最高达到110°,复合膜材料的抑菌区域增大,抗菌性能有所增强。
In this paper,poly(butylene adipate⁃co⁃terephthalate)(PBAT)/poly(lactic acid)(PLA)/dioctyl terephthal⁃ate(DOTP)/nano⁃ZnO composites were prepared by using a solvent casting method.Nano⁃zinc oxide was surface modi⁃fied with stearic acid,and the effects of particle sizes and surface modification of nano⁃ZnO on the mechanical,thermal,hydrophobic,extraction and antibacterial properties of the composite films were investigated.The results indicated that the extraction resistance of the composite films was improved due to the replacement of the hydroxyl polar group on the surface of nano⁃ZnO with stearic acid.The entanglement of the long chain alkyl of stearic acid with polymer chains im⁃proved the compatibility of modified nano⁃ZnO with PBAT.The thermal properties of the composite films decreased with a decrease in the particle size of nano⁃ZnO but an increase in the addition amount of modified nano⁃ZnO.However,their extraction resistance increased.Moreover,the tensile strength of the composite films increased up to 13.8 MPa,and their hydrophobic properties increased up to a contact angle of 110°.The antibacterial properties of the composite films were also enhanced with an increase in the antibacterial circle.
作者
王宝川
陈士军
张萍波
蒋平平
冷炎
盛勋勋
WANG Baochuan;CHEN Shijun;ZHANG Pingbo;JIANG Pingping;LENG Yan;SHENG Xunxun(Key Laboratory of Synthesis and Biocolloids Ministry of Education,College of Chemistry and Materials Engineering,Jiangnan University,Wuxi 214122,China;Linqu Qili Jinrui New Material Co,Ltd,Weifang 262600,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2023年第4期11-16,共6页
China Plastics
关键词
聚己二酸/对苯二甲酸丁二酯
氧化锌
复合薄膜
抗菌性能
poly(butylene adipate⁃co⁃terephthalate)
zinc oxide
composite film
antibacterial property
