摘要
本文采用溶液法将聚乳酸(PLA)、聚己二酸/对苯二甲酸丁二酯(PBAT)共溶于二氯甲烷中,根据前期实验结果,流延干燥后选取PLA/PBAT(60/40)以及PLA/PBAT(70/30)两种比例为基体,添加不同含量的环氧大豆油(ESO),制备PLA/PBAT/ESO复合膜,并研究ESO用量对其机械性能的影响,最后利用红外吸收光谱、差示扫描量热法对复合膜结构进行表征。结果表明,ESO能有效增强PLA与PBAT的相容性,当PLA:PBAT比例为7:3,ESO添加量为2%时,断裂伸长率为280%,是纯PLA的44倍,抗拉强度增强至38.8MPa。
In this paper,polylactic acid (PLA) and Poly(butyleneadipate-co-terephthalate) (PBAT) were dissolved in dichloromethane by solution method.According to the previous experimental results,after casting and drying,two ratios of PLA/PBAT (60/40) and PLA/PBAT (70/30) were selected as the matrix and added with different contents of epoxidized soybean oil (ESO) to prepare PLA/PBAT/ESO composite films and investigate the effect of ESO content on its mechanical properties.Finally,the structure of the as-prepared composite film was characterized by infrared absorption spectroscopy and differential scanning calorimetry.The results show that ESO can effectively enhance the compatibility of PLA and PBAT.When the ratio of PLA:PBAT is 7:3 and the amount of ESO is 2%,the tensile strength is enhanced to 38.8 MPa,and the elongation at break is 280%,which is 44 times that of pure PLA.
作者
李结瑶
罗文翰
张雪琴
蓝碧锋
王梁彬
肖乃玉
Li Jieyao;Luo Wenhan;Zhang Xueqin;Lan Bifeng;Wang Liangbin;Xiao Naiyu(Packaging Engineering Department,Zhongkai University of Agricultural and Engineering,Guangdong,510225;Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology,Guangdong,510225;Guangzhou Furui High Energy Technology Co.,Ltd.,Guangdong,511458;Maoming Green Chemical Research Institute,Guangdong,525011)
出处
《当代化工研究》
2022年第17期70-72,共3页
Modern Chemical Research
基金
2021年度南沙区民生科技项目“适用于生鲜果蔬无结露保鲜的智能绿色包装薄膜关键技术研究”(项目编号:2021MSO12)
2021年广东省教育厅服务乡村振兴重点领域专项“水果采前防护采后保鲜聚合物功能涂膜的结构设计、制备及性能调控”(项目编号:21031D1)
2020年国家自然科学基金“桉木半纤维素高效接枝共聚改性定向构筑柔性薄膜及其构-效关系”(项目编号:32001279)
2020年广州市科创委民生科技专项“一体化响应果蔬采前防护和采后保鲜功能需求的涂膜材料的关键技术及应用示范”(项目编号:202002020080)。
