| 微波法接枝改性天然胶乳的制备与表征 |
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| 引用本文： | 蔡静瑶,薛行华,李光,张利伟,赵法敏. 微波法接枝改性天然胶乳的制备与表征[J]. 弹性体, 2012, 22(3): 1-3,64 |
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| 作者姓名： | 蔡静瑶 薛行华 李光 张利伟 赵法敏 |
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| 作者单位： | 海南大学材料与化工学院,海南海口,570228 |
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| 基金项目： | 海南大学青年基金项目（qnjj1165）; 天津大学海南大学创新基金合作项目; 海南省自然科学基金项目（510208） |
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| 摘 要： | 采用微波辐射的方法对天然浓缩胶乳进行接枝改性,单体选用甲基丙烯酸甲酯,考察了微波温度、时间、引发剂和单体用量对接枝率、接枝效率的影响,用傅里叶变换红外光谱仪、核磁共振波谱仪来表征接枝产物。结果表明,微波法接枝改性天然胶乳的方法是可行的;适宜的反应条件为:采用过硫酸钾和亚硫酸钠作为引发剂,其用量为0.4%(占橡胶质量的百分数),微波温度为80℃,反应时间为1～2h,单体与胶乳质量比为1∶1。
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| 关 键 词： | 甲基丙烯酸甲酯 微波辐射 接枝共聚 天然胶乳 |
Preparation and characterization of natural rubber latex modified by graft copolymerization with microwave radiation |
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| CAI Jing-yao , XUE Xing-hua , LI Guang , ZHANG Li-wei , ZHAO Fa-min. Preparation and characterization of natural rubber latex modified by graft copolymerization with microwave radiation[J]. China Elastomerics, 2012, 22(3): 1-3,64 |
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| Authors: | CAI Jing-yao XUE Xing-hua LI Guang ZHANG Li-wei ZHAO Fa-min |
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| Affiliation: | (College of Materials and Chemical Engineering, Hainan University, Haikou 570228, China) |
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| Abstract: | In this paper nature rubber was modified by grafting of methyl methacrylate （MMA）as monomer with microwave radiation. The effects of microwave temperature, reaction time and the a- mount of initiator and monomer on the grafting rate and grafting efficiency were investigated. The structure of graft copolymer was characterized by Fourier transform infrared（FTIR） and nuclear mag- netic resonance（1H-NMR） spectrometer. The results showed that natural rubber latex modified by graft copolymerization with microwave radiation was a feasible method. The optimum reaction condi- tions were as follows：The initiator was potassium persulfate and sodium sulfite, the content of initia- tor was 0. 4%,the microwave temperature was 80 ℃ ,the reaction time was 1-2 h and the mass ratio of monomer to latex was 1 ： 1. |
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| Keywords: | methyl methacrylate microwave irradiation grafting copolymerization nature rubber latex |
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