摘要
以制备皮革抗菌剂为目标,利用原子转移自由基聚合法在TiO2纳米粒子表面接枝丙烯酸酯类聚合物,并进行季铵化处理得到聚合物季铵盐,然后将改性后的纳米粒子负载在皮革表面。结合傅里叶变换红外光谱(FT—IR)、光电子能谱(XPS)、热重分析(TGA)、扫描电子显微镜(SEM)、抗菌性能评价等测试手段,系统研究了改性前后纳米TiO2粒子对皮革抗菌性能的影响。结果表明:丙烯酸酯类聚合物通过共价键被引入到TiO2纳米粒子表面,季铵化聚合物的接枝率达到48%。负载后,改性纳米粒子均匀分布在皮革纤维表面。负载改性TiO2纳米粒子的皮革具有优异的抗细菌性能。培养6h后,对于金黄色葡萄球菌的抑制率达到99.99%。
Aiming at the preparation of the antibacterial agent for leather, the quaternized acrylics were polymer- ized on the surface of nano TiO2 particles via atom-transfer radical-polymerization (ATRP) method. The modified nano TiO2 particles were grafted on the surface of leather. The effect of nano TiO2 particles before and after modifica- tion on the mold resistance of leather were systematically investigated by fourier transform infrared spectroscopy ( FT- IR), X-ray photoelectron spectroscopy (XPS), thermal gravimetric analyzer (TGA), scanning electron microscope (SEM) and antibacterial testing. The results show that the acrylate polymer is grafted on the surface ofnano TiO2 par- ticles successfully by covalent bond, and the maximum of grafting ratio of the quaternized acrylate polymer is 48%. The modified leather after grafting nano TiO2 particles reveals excellent antibacterial performance. The inhibition rate of the modified leather on Staphylococcus aureus is 99.99% after culturing for 6h.
作者
王旭
梁纪宇
熊祖江
尹岳涛
WANG Xu1, LIANG Jiyu1, XIONG Zujiang2 , YIN Yuetao3(1. China Leather & Footwear Research Institute Co. Ltd. , Beijing 100015, China; 2. ANTA China Co. Ltd. , Jinjiang 361004, China; 3. China Leather and Footwear Industry Research Institute (Jinjiang) Co. Ltd., Jinjiang 362200, China)
出处
《中国皮革》
CAS
2018年第4期9-15,26,共8页
China Leather
基金
国家自然科学基金(编号:21646004)
北京市朝阳区科技计划项目(编号:CYGX1711)
泉州市科技计划项目(编号:2016G142)
关键词
原子转移自由基聚合
纳米粒子
表面修饰
季铵化
抑菌率
atom-transfer radical-polymerization
nano particle
surface modification
quaternization
antibacterial rate