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酶解木质素接枝聚丙烯酸多孔水凝胶的制备及表征

孙亚杰 马艳丽 代俊秀 任世学 方桂珍

孙亚杰, 马艳丽, 代俊秀, 任世学, 方桂珍. 酶解木质素接枝聚丙烯酸多孔水凝胶的制备及表征[J]. 北京林业大学学报, 2016, 38(11): 97-103. doi: 10.13332/j.1000-1522.20160095
引用本文: 孙亚杰, 马艳丽, 代俊秀, 任世学, 方桂珍. 酶解木质素接枝聚丙烯酸多孔水凝胶的制备及表征[J]. 北京林业大学学报, 2016, 38(11): 97-103. doi: 10.13332/j.1000-1522.20160095
SUN Ya-jie, MA Yan-li, DAI Jun-xiu, REN Shi-xue, FANG Gui-zhen.. Preparation and characterization of enzymatic hydrolysis lignin-based hydrogel.[J]. Journal of Beijing Forestry University, 2016, 38(11): 97-103. doi: 10.13332/j.1000-1522.20160095
Citation: SUN Ya-jie, MA Yan-li, DAI Jun-xiu, REN Shi-xue, FANG Gui-zhen.. Preparation and characterization of enzymatic hydrolysis lignin-based hydrogel.[J]. Journal of Beijing Forestry University, 2016, 38(11): 97-103. doi: 10.13332/j.1000-1522.20160095

酶解木质素接枝聚丙烯酸多孔水凝胶的制备及表征

doi: 10.13332/j.1000-1522.20160095
基金项目: 

林业公益性行业科研专项(201304614)、中央高校基本科研业务费专项 (DL13CB09)、黑龙江省自然科学基金青年项目(QC2014C011)、“十二五”国家科技支撑计划项目(2012BAD24B0403)。

详细信息
    作者简介:

    孙亚杰。主要研究方向:天然高分子化学。Email:syjksdl@163.com 地址:150040黑龙江省哈尔滨市香坊区和兴路26号东北林业大学材料科学与工程学院。   责任作者: 方桂珍,教授,博士生导师。主要研究方向:天然高分子化学。Email:Fanggz_0@163.com 地址:同上。

    孙亚杰。主要研究方向:天然高分子化学。Email:syjksdl@163.com 地址:150040黑龙江省哈尔滨市香坊区和兴路26号东北林业大学材料科学与工程学院。   责任作者: 方桂珍,教授,博士生导师。主要研究方向:天然高分子化学。Email:Fanggz_0@163.com 地址:同上。

Preparation and characterization of enzymatic hydrolysis lignin-based hydrogel.

  • 摘要: 以N,N’-亚甲基双丙烯酰胺为交联剂对丙烯酸进行预聚,以Fe2SO4/H2O2体系引发酶解木质素(EHL)形成自由基,过硫酸铵为引发剂,将酶解木质素自由基与聚丙烯酸(PAA)进行接枝共聚制备酶解木质素接枝聚丙烯酸多孔水凝胶(EHL-g-PAA)。采用红外光谱(FTIR)、环境扫描电子显微镜(SEM)和热重分析(TG)进行表征,研究EHL和PAA质量比、pH值、温度对EHL-g-PAA溶胀性能的影响。结果表明:酶解木质素与聚丙烯酸接枝成功,形成了具有新型网络结构的EHL-g-PAA,EHL-g-PAA具有不规则分层次多孔结构。当EHL和PAA质量比为0.4∶1时,EHL-g-PAA的平衡吸水倍率最大。在室温下,EHL-g-PAA在蒸馏水中的平衡吸水倍率可达410.99,吸附达到平衡的时间延长到12 h,且EHL-g-PAA对水分的释放率达到93.88%。EHL-g-PAA具有良好的pH敏感性,在酸性以及碱性溶液中吸水能力降低,在中性条件下吸水能力最高。在低温条件下,EHL-g-PAA的网络舒张,吸水能力增加;在高温条件下,EHL-g-PAA的网络收缩,吸水能力降低。在高温低温交替的环境下,与PAA相比,EHL-g-PAA显示了良好的循环能力和较好的稳定性。

     

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  • 收稿日期:  2016-03-21
  • 刊出日期:  2016-11-30

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