等离子体处理对聚醚氨酯表面浸润性和结构的影响  

EFFECT OF PLASMA TREATMENT ON SURFACE WETTABILITY AND STRUCTURE OF POLYURETHANE

作　　者：李德军[1] 赵杰[1] 胡建芳[2] 

机构地区：[1]天津师范大学物理系 [2]中央民族学院物理系

出　　处：《天津师大学报（自然科学版）》1993年第2期30-33,共4页

基　　金：天津市青年科学基金

摘　　要：本文研究了经等离子体处理的医用聚醚氨酯材料。利用N_2和Ar气体在100W的放电功率和30ml·min^(-1)的束流下产生低温等离子体,处理时间从0到15分钟变化。表面浸润性是通过测量材料表面和蒸馏水的接触角变化完成的,结果表明随着处理时间的延长,接触角从78.8°下降到61°。XPS分析结果表明等离子体处理使材料表面的一些C-H键发生断键,这是浸润性提高的主因。ESR测量结果表明材料表面的自由基数量在处理后并未明显增加,这有利于临床应用。The wettability and surface structure of plasma treatment on medical polyurethane were studied. Two kinds of gases, N_2 and Ar, were used to create the low-temperature plasma at a flow rate of 30 ml·min^(-1) and a power of 100W with the treatment time ranging from 0 to 15 minutes. The wettability was investigated by means of the sessile drop method using water, the results show that the contact angle of water decreases from 78.8° to 61.9° as the treatment time increases. The results of XPS indicated that original chemical bonds C-H were broken up after plasma treatment, which was the main reason for the surface modification. At the same time, the results of ESR show that the amount of radicals did not increase significantly after treatment, which is advantageous to clinical practice of polyurehane.

关 键 词：聚醚氨酯 等离子体处理 医用材料 

分 类 号：R318.08[医药卫生—生物医学工程]