| HRP引发酚类与淀粉接枝共聚物的制备及结构性能表征 |
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| 引用本文： | 吕生华,弓瑞,闫小亮,张国运.HRP引发酚类与淀粉接枝共聚物的制备及结构性能表征[J].功能材料,2012(2):159-162. |
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| 作者姓名： | 吕生华 弓瑞 闫小亮 张国运 |
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| 作者单位： | 陕西科技大学资源与环境学院;陕西科技大学化学与化工学院 |
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| 基金项目： | 国家自然科学基金资助项目(20876091);陕西省自然科学基金资助项目(SJ08B06) |
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| 摘 要： | 降解淀粉和酚类在辣根过氧化物酶(HRP)/H2O2的催化作用下进行自由基接枝共聚反应,制备了淀粉和酚类接枝共聚物。研究了淀粉降解程度、酚类单体配比、HRP用量、反应温度和pH对接枝改性淀粉结构与性能的影响。研究结果表明,用α-淀粉酶降解后的淀粉15与12g间苯三酚(PG)和20g对羟基苯磺酸钠(HBS)在5mg HRP/H2O2引发体系下,在30℃及pH值为7.0时反应5h制备的酚类与淀粉接枝共聚物具有较好的性能,其水溶液的表面张力为26.6mN/m,所鞣制皮革收缩温度(Ts)达到了78℃。用FT-IR、1 H NMR、UV-Vis和GPC等方法对产物的化学结构进行了表征。
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| 关 键 词： | 辣根过氧化物酶 淀粉 酚类化合物 接枝共聚物 |
Preparation of graft copolymer of phenols and starch by HRP-catalyzed system and characterization of structure and properties |
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| LV Sheng-hua,GONG Rui,YAN Xiao-liang,ZHANG Guo-yun.Preparation of graft copolymer of phenols and starch by HRP-catalyzed system and characterization of structure and properties[J].Journal of Functional Materials,2012(2):159-162. |
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| Authors: | LV Sheng-hua GONG Rui YAN Xiao-liang ZHANG Guo-yun |
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| Affiliation: | 1.College of Resource and Environment,Shaanxi University of Science & Technology,Xi’an 710021,China; 2.College of Chemistry and Chemical Engineering,Shaanxi University of Science & Technology, Xi’an 710021,China) |
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| Abstract: | A graft copolymer was synthesized by means of radical copolymerization of phloroglucinol(PG),hydroxyl benzene sulfonic acid sodium(HBS) and degraded starch which was degraded by α-amylase and the graft copolymerization was catalyzed by horseradish peroxidase(HRP)/H2O2.It was investigated the effects of degradation degree of starch,monomer ratio of phenols,the dosage of HRP,polymerization temperature and pH value on structure and properties of modified starch.The optimum reaction conditions were obtained as follows: mass ratio of PG to HBS 12∶20,15g starch which was degraded by α-amylase,polymerization 30℃ pH 7.0 and 5mg of HRP solution.The surface tension of modified starch solution was 26.6mN/m and the shrinkage temperature(Ts) of tanned leather reached 78℃.Meanwhile the chemical structure of the graft copolymer was characterized by FT-IR,1H-NMR,UV-Vis and GPC. |
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| Keywords: | horseradish peroxidase starch phenols copolymer graft copolymer |
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