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首页> 外文期刊>Journal of Wood Chemistry and Technology >CARBOXYMETHYLATION OF CORNCOB HOLOCELLULOSE AND ITS INFLUENCES ON PAPER PROPERTIES
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CARBOXYMETHYLATION OF CORNCOB HOLOCELLULOSE AND ITS INFLUENCES ON PAPER PROPERTIES

机译：玉米芯纤维素的羧甲基化及其对纸张性能的影响

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摘要

Corncob is an underutilized agricultural by-product. In this work, corncob was treated with sodium chlorite to remove lignin, and the resulting holocellulose was optionally modified with sodium chloroacetate under alkaline conditions for different time periods to obtain five carboxymethylated corncob holocellulose samples. The derivatization products were investigated by infrared spectroscopy, elemental analysis, carboxyl content tests, and scanning electron microscope analysis. When added at the 1% level (time of carboxymethylation 140 minutes) to an unbleached triploid Populus tomentosa Carr kraft fiber suspension and made into paper, the tensile index, burst index, and folding endurance were increased by 46.4%, 34.2%, and 397.8%, respectively. The results demonstrated that simultaneous carboxymethylation of both hemicelluloses and cellulose in corncob can be an effective approach to preparing a novel dry-strength additive for paper.
机译：玉米芯是未充分利用的农业副产品。在这项工作中，将玉米芯用亚氯酸钠处理以去除木质素，然后在碱性条件下，可选地用氯乙酸钠对所得的纤维素进行不同时间的修饰，以获得五个羧甲基化玉米芯全纤维素样品。通过红外光谱，元素分析，羧基含量测试和扫描电子显微镜分析研究了衍生产物。当以1％的水平（羧甲基化时间为140分钟）添加到未漂白的三倍体毛白杨卡尔牛皮纤维悬浮液中并制成纸时，拉伸指数，破裂指数和耐折性分别提高了46.4％，34.2％和397.8 ％， 分别。结果表明，玉米芯中半纤维素和纤维素的同时羧甲基化可能是制备新型纸张干强度添加剂的有效方法。

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  • 来源
    《Journal of Wood Chemistry and Technology》 |2015年第3期|137-145|共9页
  • 作者

    He Weitao; Yang Tiantian; Wang Yibin; Song Xianliang;

  • 作者单位

    Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;

    Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;

    Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;

    Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Corncob; carboxymethylation; holocellulose; fiber; paper properties;

    机译：玉米芯;羧甲基化;纤维素;纤维;纸张性能;

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