摘要
采用两步接枝方法,研究了芴酮(FL)引发丙烯酸(AA)在低密度聚乙烯(LDPE)膜表面的接枝聚合过程,探讨了单体浓度、聚合温度等因素对表面接枝的影响。结果表明:在单体质量分数为5%～20%,聚合温度为70～90℃范围内,增大单体浓度、提高聚合温度,有利于接枝反应的进行。采用称量法、表面水接触角测定法、红外光谱分析等手段对表面接枝膜进行了表征,结果表明丙烯酸被成功地引入到LDPE膜表面,接枝率最高达到8.24%,改善了LDPE膜表面的亲水性。
The two step polymerization grafting of acrylic acid onto the surface of low density polyethylene （LDPE） film initiated by fluorenone was investigated. The influences of several parameters such as monomer concentration and reaction temperature were examined. The results showed that the grafting reaction was promoted by increasing the monomer concentration in the range from 5% to 20% and the reaction temperature in the range from 70 to 90 ℃. The grafted film was characterized by gravimetric analysis, water contact angle measurements and infrared spectroscopy. The results showed acrylic acid was successfully introduced onto the surface of the LDPE film, with a grafting yield as high as 8.24% , as evidenced by the improvement of the surface hydrophilicity.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第2期52-57,共6页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
国家自然科学基金重点项目(51033001)
北京市共建项目专项资助
中央高校基本科研业务费(ZZ1208)
国家"863"计划(2009AA03Z325)
关键词
芴酮
低密度聚乙烯
表面光接枝
丙烯酸
fluorenone
low density polyethylene （LDPE）
surface photografting
acrylic acid
