摘要
目的研究壳聚糖(CS)与聚3-羟基丁酸酯/3-羟基己酸酯(PHBH)复合成膜后的各项性能。方法以冰乙酸为共溶剂,将CS与PHBH采用共混流延法制备成CS/PHBH生物降解复合膜。利用红外光谱仪、扫描电镜及差热分析仪等研究不同质量比CS/PHBH对复合膜力学性能、结构、热稳定性,以及生物降解性能的影响。结果壳聚糖和PHBH之间存在分子间氢键,两者间产生了一定的相互作用,同时,CS/PHBH复合膜显示出较好的热稳定性和生物可降解性。当CS和PHBH质量比为3∶1时,CS/PHBH生物降解复合膜的拉伸强度与断裂伸长率优于其他质量比的复合膜。结论当CS和PHBH质量比为3∶1时,可得到综合性能优良的复合膜。
The work aims to study all the performances of composite film made by chitosan（CS） and poly（3-hydroxybutyrate-co-3-hydroxyhexanoate）（PHBH）. With glacial acetic acid as co-solvent, the CS/PHBH biodegradable composite film was prepared by CS and PHBH in the blend casting method. By means of infrared spectrometer, scanning electron microscopy（SEM） and differential thermal analyzer（DTA）, etc., the effect of CS/PHBH with various mass ratios on the mechanical property, structure, thermal stability and biodegradability of the composite film was studied. There were intermolecular hydrogen bonds between chitosan and PHBH, and there was a certain interaction between them; meanwhile, the CS/PHBH composite film showed good thermal stability and biodegradability. When the mass ratio of CS/PHBH was 3∶1, the tensile strength and elongation at break of CS/PHBH biodegradable composite film were better than the composite films with other mass ratios. When the mass ratio of CS and PHBH is 3∶1, the composite film with overall performance can be obtained.
出处
《包装工程》
CAS
北大核心
2017年第23期66-70,共5页
Packaging Engineering
基金
国家级大学生创新训练项目(201510057007)
