等离子体诱导丙烯酸接枝改性聚丙烯熔喷非织造材料

为提高聚丙烯（PP）熔喷非织造材料表面的亲水性，针对PP表面化学惰性较大的缺点，通过氩气等离子体处理材料表面，然后进行丙烯酸接枝改性，获得了亲水性良好的PP熔喷材料。研究了不同气氛、处理电压和时间对等离子体处理的影响。同时，研究了接枝温度、时间和单体质量分数对丙烯酸接枝处理的影响。采用接触角测量仪、扫描电子显微镜和傅里叶红外光谱仪分别测试了等离子体和接枝处理前后材料亲水性变化、表面形貌及基团的变化。结果表明：在氩气等离子体处理电压为150 V、处理时间为180 s的条件下处理后，当接枝时间为90 min、接枝温度60 ℃、丙烯酸单体质量分数为60%时，样品接触角从140°下降至32°，材料表面亲水性最好。

Grafted modification of polypropylene melt-blown nonwowen materials with acrylic acid induced by plasma

To improve the hydrophilicity of polypropylene ( PP ) melt-blown nonwoven materials, the surfaces of materials were treated by argon plasma and then grafted by acrylic acid because of its chemical inertness of PP. The treated nonwoven materials show good hydrophilicity. The influence of different atmospheres, processing voltage and time on plasma treatment were studied. At the same time, the influence of grafting temperature, time, and monomer concentration on acrylic acid grafted treatment were also studied. Using contact angle analyzer, scanning electron microscope ( SEM) and Fourier infrared spectroscopy ( FT-IR ) , hydrophilicity, surface morphology and group changes of materials before and after treatment were measured. The results show that under conditions of processing voltage of 150 V, the processing time of 180 s, argon plasma treatment, grafting time of 90 min, grafting temperature of 60 ℃and acrylic monomers concentration of 60%, the sample contact angle decreases from 140 ° to 32 ° , and hydrophilicity is the best.