通过低温等离子体技术对纤维毡进行表面改性,提高其表面润湿性.对未经过任何处理的熔喷聚乙烯纤维毡进行低温等离子体处理,通过接触角测量仪、红外光谱仪和扫描电镜对经过空气等离子体及丙烯酸气相等离子体处理的纤维毡进行表面接触角、官能团以及纤维表面形貌等特征进行表征.结果显示,随着放电时间和放电功率的增加,纤维毡表面亲水性得到了不断提升,改性后的纤维表面接枝了羟基(-OH)、醛基(-CHO)及羰基(C=O)等亲水性官能团,且表面形貌发生了一定的变化,表面微观粗糙度有所增大.这些一系列变化最终使纤维毡表面润湿性得到了有效改善.
The low temperature plasma treatment was used to improve the surface performance and wettability of the fiber felt.The low-temperature plasma treatment was applied on the untreated polyethylene melt-blown fiber felt and the properties of the contact angle,functional groups and morphology of the surface of the fiber felt treated by air plasma and acrylic acid gas plasma are characterized by contact angle meter,infrared spectrometer and scanning electron microscopy.The results show that with the increase of the discharge time and discharge power,the surface hydrophilicity of the fiber felt has promoted.The surface had grafted hydroxyl (-OH),al dehyde (CHO),carbonyl (C =O) and other hydrophilic functional groups.Besides,some changes have taken place in surface morphology and surface micro roughness is increased.Such a series of changes eventually make the fiber felt surface wettability improve effectively.
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