| Graft Copolymerization of Ethyl Acrylate onto Hydroxypropyl Methylcellulose Using Potassium Persulfate as Initiator |
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| 作者姓名： | 王丽丽 许涌深 邓树斌 袁才登 |
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| 作者单位： | School of Chemical Engineering and Technology Tianjin University，School of Chemical Engineering and Technology Tianjin University，School of Chemical Engineering and Technology Tianjin University，School of Chemical Engineering and Technology Tianjin University，Tianjin 300072 China Tianjin 300072 China Tianjin 300072 China Tianjin 300072 China |
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| 摘 要： | Cellulose is one of the mostabundantnatural pol-ymers that have received much attention in research tomodify its physical and chemical structures to improveits properties and broaden its applications. A lot ofwork1—5]has been reported on the modification viagraft copolymerization of vinyl monomers onto cellu-lose, often using different initiator systems. Variousvinyl monomers such as methyl methacrylate6,7], 4-vinylpyridine8], acrylonitrile9,10], and styrene11]have been used for cellulos…
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| 关 键 词： | 接枝共聚 乙烷基丙烯酸脂 羟基丙基甲基纤维素 过硫酸钾 引发剂 |
| 收稿时间： | 2006-02-28 |
Graft Copolymerization of Ethyl Acrylate onto Hydroxypropyl Methylcellulose Using Potassium Persulfate as Initiator |
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| WANG Lili,XU Yongshen,DENG Shubin,YUAN Caideng.Graft Copolymerization of Ethyl Acrylate onto Hydroxypropyl Methylcellulose Using Potassium Persulfate as Initiator[J].Transactions of Tianjin University,2006,12(6):410-414. |
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| Authors: | WANG Lili XU Yongshen DENG Shubin YUAN Caideng |
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| Abstract: | With potassium persulfate (KPS) as initiator,graft copolymerization of ethyl acrylate (EA) onto water-soluble hydroxypropyl methylcellulose (HPMC) was investigated in aqueous medium.Effects of monomer concentration,initiator concentration,matrix concentration,and reaction temperature on the percentage of grafting (G) and grafting efficiency (GE) were studied.The results show that G and GE values both increase with the the increase of EA concentration and KPS concentration; when raising HPMC concentration from 0.12 mmol/L to 0.47 mmol/L,G decreases,while GE increases;and when raising reaction temperature from 50 ℃ to 65 ℃,G increases,but GE decreases.In addition,the graft copolymers were characterized by Fourier transform infrared ( FTIR) spectra and transmission electron microscopy (TEM) methods. |
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| Keywords: | graft copolymerization ethyl acrylate hydroxypropyl methylcellulose |
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