含纳米TiO_2的SEBS高档抗菌医用膜制备研究  

Study on the Preparation of High-grade Anti-bacterial Medical SEBS Films Containing Nano-TiO_2

作　　者：梁红文[1] 胡春慧[2] 周涛[2] 李林[2] 张爱民[2] 

机构地区：[1]中国石化巴陵石油化工有限责任公司,湖南岳阳4140141 [2]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《塑料工业》2012年第8期107-110,共4页China Plastics Industry

基　　金：国家自然科学基金(50873071);教育部新世纪优秀人才支持计划(NCET-08-0368)

摘　　要：纳米TiO2是高效光催化剂,具有抗菌能力强、低毒性、抗菌速度快、颜色稳定性好、有合适波段光照射、有氧气参与及抗菌谱广等特点,且价格低廉、资源丰富。经过处理的纳米TiO2在聚合物基体中具有良好的分散性,且可以起到杀菌的作用,具有抗菌长效性。研究了纳米TiO2在氢化苯乙烯-丁二烯嵌段共聚物(SEBS)医用塑料薄膜中的应用。利用吹塑成型方法制备医用膜,并且对吹塑成型过程中的各种影响因素进行了研究。主要得到以下结论:最佳吹膜温度为200℃,SEBS最佳充油比为2∶1;加入TiO2后,断裂伸长率几乎不变,拉伸强度下降;加入TiO2后,紫外光下SEBS薄膜的老化速度明显加快;TiO2处理与否及各组分含量的变化对薄膜老化速度的影响很小。The nano-TiO2 was highly efficient photocatalyst, with the characteristics of a strong anti- bacterial, low-toxicity, anti-bacterial speed, color stability, suitable band-rays, oxygen participation and a broad spectrum antimicrobial, low cost and resource-rich properties. The nano-TiO2 treated with surface treatment agent had good dispersion in polymer matrix, and it can play a bactericidal effect with a long-term nature of antimierobial. For these reasons, the application of nano-TiO 2 in the medical anti-bacterial medical SEBS films was studied. The blown molding method to prepare the medical SEBS films was employed; a variety of factors on the process of blown molding was investigated. The main results after a series of experiments were concluded as follows. The best film blowing temperature was 200℃. The best ratio of oil-filled of SEBS was 2：1. The use of nano-TiO 2 made the elongation at break remain and the strength decreased. The use of nano-TiO 2 significantly speeded up the aging rate of SEBS films under the ultraviolet light. Whether the nano-TiO2 with or without treatment and the change of other components content had little effect on the aging of the film.

关 键 词：氢化苯乙烯-丁二烯嵌段共聚物 纳米二氧化钛 抗菌 医用膜 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]