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化学学报
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化学学报 ›› 2002, Vol. 60 ›› Issue (6): 1106-1110. 上一篇    下一篇

研究论文

一缩二乙醇二甲基丙烯酸酯对真丝接枝的反应性

陈国强;邢铁玲;黄才荣;周翔   

  1. 苏州大学材料工程学院,苏州(215021);东华大学化学化工系.上海(200051)
  • 发布日期:2002-06-15

Graft Reactivity of Diethylene Glycol Dimethacrylate onto Silk Fibers

Chen Guoqiang;Xing Tieling;Huang Cairong;Zhou Xiang   

  1. Silk Research Institute, Suzhou University,Suzhou(215021);College of Chemistry & Chemical Engineering, Donghua University.Shanghai (200051)
  • Published:2002-06-15

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研究了一缩二乙二醇二甲基丙烯酸酯在空气存在下，用过硫酸钾(KPS)在水液 中对真丝的接枝。对接枝的条件，如单体、引发剂、甲酸(FA)和乳化剂OP的浓度以 及温度和时间对接枝率的影响进行了测试。发现了较佳的接枝条件是：温度 = 80 ℃，时间 = 30 min，[KPS] = 1.85% (owm)，[OP] = 1% (owf)，[FA] = 0.2%。 接枝率的大小可以用单体浓度来调节，接枝活化能是86.94 kJ/mol。

关键词: 真丝, 接枝共聚, 甲基丙烯酸酯, 过硫酸钾, 活化能

The grafting of diethylene glycol dimethacrylate (PEGDMA-2) onto silk fibers in aqueous systems using potassium persulfate (KPS) under air was investigated. Effects of grafting conditions, such as concentrations of monomers (M), initiators, formic acid (FA) and OP (an emulsor), temperature and time, on the graft yield were determined. The optimum graft conditions were found: T = 80 ℃, t = 30 min, [KPS] = 1.85% (owm), [OP] = 1% (owf), [FA] = 0.2% (V/V) and [M] = 80% (owf). The activation energy of grafting at 50～80 ℃ was found to be 86.94 kJ/mol for PEGDMA-2. The graft yield could be regulated by the concentration of monomer.

Key words: SILK, GRAFT COPOLUMERIZATION, METHYLPROPENOIC ACID ESTER, POTASSIUM PERSULFATE, ACTIVATION ENERGY

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