纺织学报 ›› 2011, Vol. 32 ›› Issue (5): 10-15.

• 纤维材料 • 上一篇    下一篇

低温等离子体引发聚丙烯薄膜气相接枝丙烯酸

王月然;王振欣;,魏俊富1;程春祖;,任婉婷2;付中玉;李健;聂锦梅   

  1. 1. 天津工业大学2. 中国纺织科学院
  • 收稿日期:2010-05-10 修回日期:2010-06-22 出版日期:2011-05-15 发布日期:2011-05-15
  • 通讯作者: 任婉婷

Cold Plasma-induced Graft Polymerization of Acrylic Acid onto Polypropylene Film in Vapor Phase

  • Received:2010-05-10 Revised:2010-06-22 Online:2011-05-15 Published:2011-05-15

摘要: 利用等离子体处理聚丙烯(PP)薄膜后间接引发丙烯酸在其表面的气相接枝聚合。实验结果表明,15分钟接枝处理即可将聚丙烯酸薄膜的水接触角从97降至32,说明PP薄膜的亲水性大幅度提高。红外光谱证明丙烯酸已接枝在PP薄膜表面。扫描电镜观察到接枝后的PP薄膜表面生成了众多1-2m左右的凸起物。10min沸水处理的结果表明,该气相接枝整理有效地克服了单纯等离子体处理普遍存在的时效性问题。通过摸索接枝反应时间和反应温度对接枝率和水接触角的影响规律发现,在55℃下反应15min,接枝率和水接触角可分别达到0.45%和32°,确定为较优化的接枝反应参数。这种快速有效的等离子体引发气相接枝法为其在材料表面改性领域中的产业化提供了强有力的实验基础。

关键词: 低温等离子体, 气相接枝, 表面改性, 亲水性, 丙烯酸

Abstract: Polypropylene (PP) film was treated by cold plasma and followed by a vapor phase graft polymerization of acrylic acid (AAc). It was found that 15 minutes grafting was sufficient enough to decrease the water contact angle (WCA) of PP film from 97 to 32, which indicates a great improvement in its hydrophilicity. FTIR-ATR study confirmed the grafting of AAc on PP film. SEM observation clearly showed many bump-like substances in the size of around 1-2m. This modified hydrophilicity kept very well even after washing the grafted sample in boiling water for 10 minutes, which indicates that the ageing effect of merely plasma-treated PP film was overcome. By investigating the effect of reaction time and temperature on the degree of grafting, an optimum condition was found as grafting for 15min at 55C. Under the optimum condition, the degree of grafting and WCA of grafted sample reached 0.45% and 32, respectively. It was thought that this fast and effective method of graft polymerization in vapor phase could provide a strong experimental support to develop corresponding industrial applications in the field of surface modification.

Key words: cold plasma, vapor phase grafting, surface modification, hydrophilic, acrylic acid

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