抗菌纳米ZnO复合乳液的制备及抑菌效果  

Preparation and Investigation of Bacterial Resistant Nano-ZnO Composite Latex and Bacterial Resistance

作　　者：卢秀萍[1] 邵金璐[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300457

出　　处：《天津科技大学学报》2006年第4期1-4,8,共5页Journal of Tianjin University of Science & Technology

基　　金：天津市自然科学基金资助项目(033602311)

摘　　要：选用丙烯酸丁酯、苯乙烯等单体，对钛酸酯偶联剂改性的抗菌纳米氧化锌进行原位聚合，制备具有核壳结构的纳米ZnO复合乳液；以水溶性羧甲基纤维素钠（CMC—Na）为分散剂，制备纳米ZnO／苯丙共混复合乳液。采用活化指数、亲油化度以及红外光谱评价纳米ZnO的表面改性效果，井对复合乳液的粒径、抑菌性及紫外线屏蔽效应作了系统研究。结果表明，当偶联剂用量为纳米ZnO量的1／10时，改性纳米ZnO的活化指数、亲油化度均达最大；当pH为5—6，CMC—Na用量为3％，改性纳米ZnO的分散效果最好。当改性纳米ZnO含量为0．1％-0．4％，复合乳液具有优良的抑菌作用和紫外线屏蔽功能。Acrylate and styrene were selected as monomers in preparation of nano-ZnO composite latex with core-shell structure by in-situ polymerization of bacterial resistant nano-ZnO modified by titanate coupling agent. Water-soluble carboxymethyl cellulose sodium（CMC-Na） was used as dispersing agent to prepare nano-ZnO/styrene-acrylate blending composite la- tex. Effect of nano-ZnO surface modified was evaluated by activating index, oil-loving degree and infrared spectrogram. Particle size, bacterial resistance and ultraviolet screen of nano-ZnO composite latex were also systemic researched. Result has shown that the activating index and oil-loving degree of modified nano-ZnO was maximum when coupling agent content was 10% of nano-ZnO; dispersivity of modified nano-ZnO was optimum as pH value was 5- 6 and CMC-Na content is 3%; excellent bacterial resistance and ultraviolet screen of composite latex could be attained when modified nano-ZnO content was 0. 1% -0.4%.

关 键 词：钛酸酯偶联剂 羧甲基纤维素钠 抗菌纳米ZnO 抑菌性 紫外线屏蔽 

分 类 号：TQ630.7[化学工程—精细化工]