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首页> 外文期刊>繊維学会誌 >Influence of Degree of Substitution of Carboxymethyl Cellulose on Wet Strength of Pulp Handsheets Prepared by Dual Polymer System
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Influence of Degree of Substitution of Carboxymethyl Cellulose on Wet Strength of Pulp Handsheets Prepared by Dual Polymer System

机译：羧甲基纤维素的取代度对双聚合物制浆手抄纸湿强度的影响

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摘要

Carboxymethyl cellulose (CMC)-containing pulp handsheets were prepared by internal additions of a cationic polymer (CP) and CMCs with various degrees of substitution (DS) ranging from 0.49 to 1.29 to pulp slurries. The influence of the DS of CMC on dry- and wet-tensile strengths of the CMC-containing handsheets was studied. CMC contents in the handsheets were controlled to be almost equal for all the handsheets by controlling the CP addition level. Almost no influence of the DS values of CMCs ranging from 0.63 to 1.29 on the highest dry-tensile strengths was observed for the handsheets, when CMC contents in the handsheets were almost equal. Wet-tensile strengths of the handsheets soaked in solutions consisting of ethanol, water and calcium chloride with various weight ratios similarly decreased for all CMC-containing handsheets with increasing water content of the soaking solutions, irrespective of the DS of CMCs. However, wet-tensile strength of the handsheets increased with increasing the DS of CMC, when ethanol content of the soaking solutions was approximately 20%. The obtained results indicate that the amount of CMC-COO~- Ca~(2+)Cl~- structures formed between CMC and CaCl_2 in the handsheets during the soaking treatment primarily contributes to the wet-strength development.
机译：含羧甲基纤维素（CMC）的纸浆手抄纸是通过向纸浆中内部添加阳离子聚合物（CP）和各种取代度（DS）为0.49至1.29的CMC而制备的。研究了CMC的DS对含CMC的手抄纸的干，湿拉伸强度的影响。通过控制CP添加量，将手抄纸中的CMC含量控制为对于所有手抄纸几乎相等。当手抄纸中的CMC含量几乎相等时，几乎没有观察到从0.63至1.29的CMC的DS值对手抄纸的最高干拉伸强度的影响。对于所有含CMC的手抄纸，浸泡在由各种重量比的乙醇，水和氯化钙组成的溶液中的手抄纸的湿拉伸强度都随着浸泡液中水含量的增加而降低，而与CMC的DS无关。但是，当浸泡溶液中的乙醇含量约为20％时，手抄纸的湿拉伸强度会随着CMC的DS值的增加而增加。所得结果表明，在浸泡过程中手抄纸中CMC和CaCl_2之间形成的CMC-COO〜-Ca〜（2+）Cl〜-结构的数量主要有助于湿强度的发展。

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  • 来源
    《繊維学会誌》 |2012年第7期|p.192-197|共6页
  • 作者

    Takehiko Uematsu; Yoshiaki Matsui; Shusuke Kakiuchi; Akira Isogai;

  • 作者单位

    Global R&D, Kao Corporation, 1334 Minato, Wakayama 640-8580, Japan,Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan,To whom correspondence should be addressed;

    Global R&D, Kao Corporation, 1334 Minato, Wakayama 640-8580, Japan;

    Global R&D, Kao Corporation, 1334 Minato, Wakayama 640-8580, Japan;

    Global R&D, Kao Corporation, 1334 Minato, Wakayama 640-8580, Japan;

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