低温等离子体对低密度聚乙烯(LDPE)薄膜表面改性的研究  

Study on Surface Modification of Low Density Polyethylene(LDPE)Film by Low Temperature Plasma Treatment

作　　者：解林坤[1] 叶喜[1] 吴章康[1] 邓启平[1] 柴希娟[1] 梁艳君[1] 

机构地区：[1]西南林业大学木质科学与装饰工程学院,昆明650224

出　　处：《材料研究学报》2010年第6期661-666,共6页Chinese Journal of Materials Research

基　　金：云南省应用基础研究209306;云南省教育厅500929资助项目~~

摘　　要：利用低温等离子体,以氧气为工作气体,在工作压力为20 Pa、处理功率为30 W的条件下对LDPE薄膜进行了表面改性。用接触角、FTIR ATR、DSC、SEM、AFM等手段对改性表面进行了分析。结果表明:在10 s～300 s的处理时间内,单位面积的失重率随处理时间的增加线性增大;接触角在0～20 s内随处理时间的增加显著减小,而在40 s～300 s的处理时间内并没有发生显著变化;改性后的接触角随着放置时间的推移逐渐增大;LDPE薄膜经过氧等离子体处理后能在其表面引入各种极性基团,主要是羰基、羟基和羧基;处理后薄膜的热性能(主要是结晶度)发生了改变。The surface of low density polyethylene film was modified using low temperature O_2 plasma under the condition of working pressure of 20 Pa and treatment power of 30 W.The results were analyzed with water contact angle measurement,Fourier transformed infrared spectroscopy（FTIR）,differential scanning calorimetry（DSC）,scanned electron microscopy（SEM）,atomic force microscopy（AFM）, etc..The results showed that the weight loss rate of per unit area was improved as linearity with the increase of the treatment time of 10 s～300 s;the water contact angle was gradually decreased in the 0～20 s and theirs values did not change obviously during the 40 s～300 s treatment time;the evolution of water contact angle was gradually increased with the aging time;the surface of low density polyethylene could form some polar species such as carbonyl,hydroxyl and carboxyl groups and the thermal behaviors （mainly crystallinity） were changed after treatment by low temperature O_2 plasma.

关 键 词：有机高分子材料 等离子体处理 低密度聚乙烯 表面改性 

分 类 号：TB324[一般工业技术—材料科学与工程]