The Surface Modification of Medical Polyurethane to Improve the Hydrophilicity and Lubricity: The Effect of Pretreatment

被引：13
作者：
Zhou, Xuefeng [1 ,2 ]
Zhang, Tianzhu [1 ,2 ]
Jiang, Xiaoli [1 ,2 ]
Gu, Ning [1 ,2 ]
机构：
[1] Southeast Univ, State Key Lab Bioelect, Jiangsu Key Lab Biomat & Devices, Sch Biol Sci & Med Engn, Nanjing 210096, Peoples R China
[2] Southeast Univ, Suzhou Res Inst, Suzhou Key Lab Biomat & Technol, Suzhou 215123, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2010年 / 116卷 / 03期
基金：
中国国家自然科学基金;
关键词：
modification; polyurethane; surface; hydrophilicity; friction coefficient; BIOMATERIALS; HEMOCOMPATIBILITY; BIOCOMPATIBILITY; IMMOBILIZATION; ELASTOMERS; CATHETER; MONOMER; OZONE;
D O I：
10.1002/app.31499
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The medical polyurethane (PU) film was grafted with poly(acrylic acid) (PAA) to improve the hydrophilic and lubricious properties. The influences of pretreatment by ozone or potassium peroxydisulfate on themorphologies of PU films and grafting results were systematically investigated. The grafted PU films were characterized using attenuated total reflection Fourier transformed infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM) and gel permeation chromatography (GPC). The hydrophilic and lubricious properties were evaluated by water contact angle and friction coefficient, respectively. The results showed that PAA could be grafted firmly on PU activated by both ozone and potassium peroxydisulfate, and the PAA-grafted PU showed good hydrophilic and lubricious performance. More importantly, the PAA-grafted PU films with the pretreatment of ozone were better in surface roughness, hydrophilicty and lubricity, compared to those with the pretreatment of potassium peroxydisulfate. Hence, surface ozonation could be a better choice for the pretreatment of medical polymer. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 116: 1284-1290, 2010
引用
收藏
页码：1284 / 1290
页数：7
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