摘要
采用熔融共混法,分别将壳聚糖(CTS)、季铵盐壳聚糖(QCTS)与聚己内酯(PCL)共混制备抑菌材料CTS-PCL和QCTS-PCL。CTS、QCTS与PCL在转矩流变仪密炼腔中进行熔融、混合,转移到平板硫化机热压成膜,得到的膜片进行力学性能测试和抑菌性能测试。结果表明:随着CTS和QCTS添加量的增加,共混材料的断裂伸长率和拉伸强度减小;QCTS-PCL共混物对大肠杆菌和枯草芽孢杆菌表现出抑制效果,随着QCTS用量的增加,共混物对枯草芽孢杆菌和大肠杆菌的抑菌圈直径增大,抑菌敏感度增高;不同配比的CTS-PCL共混物对大肠杆菌和枯草芽孢杆菌均无明显抑菌效果。
In this paper , Chitosan-Polycaprolactone blends （CTS-PCL） and Quaternarized Chitosan-Polycaprolactoneblends （QCTS） were obtained by molten process. CTS, QCTS and PCL were mixed ina torque rheometer mixer inmelting state. Blend films were further obtained by hot-press molding with plate vulcanizer. Results showed that thetensile strength and elongation at break was reduced as CTS and QCTS concentration increased. The antibacterialactivity of the blends was assessed against bacillus subtilis and escherichia coli. QCTS-PCL blends show significantinhibition towards both bacillus subtilis and escherichia coli. When QCTS concentration was higher, the antibacterialcircle diameter of the final blends was higher as well. However, CTS-PCL blend did not show inhibition.
作者
曾安蓉
林志杰
汪扬涛
余梓铭
ZENG Anrong;LIN Zhijie;WANG Yangtao;YU Ziming(College of Materials and Chemical Engineering, Liming Vocational University, Quanzhou Fujian 362000, China;Applied Technology Center of Fujian Provincial Higher Education for Practical Chemical Material,Quanzhou Fujian 362000, China)
出处
《莆田学院学报》
2017年第5期48-52,共5页
Journal of putian University
基金
福建省中青年教师教育科研项目计划科技类项目(JAT160844)
关键词
壳聚糖
季铵盐壳聚糖
聚己内酯
抑菌
chitosan
quaternarized chitosan
polycaprolactone
antibacterial
