| Acetoacetylation of Hydroxyethyl Cellulose |
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| 引用本文： | 陈晓锋,高彦芳,杜奕,刘德山. Acetoacetylation of Hydroxyethyl Cellulose[J]. 清华大学学报, 2002, 7(5) |
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| 作者姓名： | 陈晓锋 高彦芳 杜奕 刘德山 |
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| 作者单位： | CHEN Xiaofeng，GAO Yanfang，DU Yi，LIU Deshan Institute of Polymer Science and Engineering，Department of Chemical Engineering，Tsinghua University，Beijing 100084，China |
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| 基金项目： | Supported by P&G Research Foundation |
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| 摘 要： | IntroductionSuperabsorbent resin is one of the most importantresins[1] ,but its flexibility is not very good.Somegrafting processes were used to improve theflexibility of superabsorbent resin,for example,acrylate polymer was grafted to hydroxyethylcellulose(HEC) [2 4 ] .Increasing the grafting chainlength increases the flexibility of superabsorbentresin. However,the hydroxyethyl group ofhydroxyethyl cellulose is not very active[5] andwould be more likely to graft if the acetoacetylgroup repl…
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Acetoacetylation of Hydroxyethyl Cellulose |
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| CHEN Xiaofeng,GAO Yanfang,DU Yi,LIU Deshan Institute of Polymer Science and Engineering. Acetoacetylation of Hydroxyethyl Cellulose[J]. Tsinghua Science and Technology, 2002, 7(5) |
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| Authors: | CHEN Xiaofeng GAO Yanfang DU Yi LIU Deshan Institute of Polymer Science Engineering |
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| Affiliation: | CHEN Xiaofeng,GAO Yanfang,DU Yi,LIU Deshan Institute of Polymer Science and Engineering,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China |
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| Abstract: | The acetoacetyl group can be used to improve superabsorbent resins since it is more active than the hydroxyethyl group. The acetoacetyl group can be introduced into the side group of hydroxyethyl cellulose (HEC) to activate HEC using the ester exchange reaction between HEC and ethyl acetoacetate (EAA) to improve HEC grafting. This paper discusses the main factors affecting the reaction, such as the amount of EAA and catalyzer, the reaction temperature, and the reaction time. The acetoacetyl group was successfully introduced into HEC. Within specified ranges, increasing the amount of EAA, the reaction temperature and the reaction time will increase the acetoacetylation. |
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| Keywords: | hydroxyethyl cellulose (HEC) acetoacetylate ethyl acetoacetate (EAA) |
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