| 表面紫外光接枝润滑改性医用聚氨酯材料 |
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| 引用本文： | 罗祥林,何斌,李赛,钟银屏.表面紫外光接枝润滑改性医用聚氨酯材料[J].高分子材料科学与工程,2000,16(2):132-135. |
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| 作者姓名： | 罗祥林 何斌 李赛 钟银屏 |
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| 作者单位： | 四川大学高分子材料系,四川成都,610065 |
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| 基金项目： | 国家自然科学基金!重点项目 (3 98-3 0 1 2 0 ) |
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| 摘 要： | 用紫光直接引发亲水性单体Ｎ－乙烯吡咯烷酮、丙烯酰胺在医用聚氨酯表面进行接枝反应,可以提高ＰＵ表面的润滑性。研究了影响接枝密度、摩擦系数的因素,测定了单位表面积吸水率、水接触角。扫描电子显微镜观察发现,接枝反应后材料形成了新表面形貌。
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| 关 键 词： | 医用 聚氨酯 表面润滑 紫外光 接枝聚合 改性 |
| 文章编号： | 1000-7555(2000)02-0132-04 |
| 修稿时间： | 1999-09-04 |
SURFACE UV PHOTO-GRAFTING LUBRICATION MODIFICATION OF MEDICAL POLYURETHANE MATERIAL |
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| LUO Xiang-lin,HE Bin,LI Sai,ZHONG Yin-ping.SURFACE UV PHOTO-GRAFTING LUBRICATION MODIFICATION OF MEDICAL POLYURETHANE MATERIAL[J].Polymer Materials Science & Engineering,2000,16(2):132-135. |
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| Authors: | LUO Xiang-lin HE Bin LI Sai ZHONG Yin-ping |
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| Abstract: | Hydrophilic monomers(N vinyl) pyrrolidone(NVP) and acrylamide(AAm) were grafted on polyurethane film surface by UV irradiation to improve the surface lubricity. The surface became very slippery after irradiation in the presence of riboflavin. The factors such as reaction time and monomer concentration affecting density and friction coefficient were discussed. The per unit surface area water absorption content and water contact angle were detected. The results show that the friction coefficient decrease from 0.6 to below 0.1 after grafting polymerization. The surface morphologies were studied by scanning electron microscopy(SEM). |
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| Keywords: | medical polyurethane hydrophilic monomer surface lubrication UV photo grafting polymerization |
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