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Influence of Addition of Fine Cellulose Fibers on Physical Properties and Structure of Paper

机译：纤维素细纤维的添加对纸张物理性能和结构的影响

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摘要

Recently, various fine cellulose fibers (CFs) such as cellulose nanofiber and microfibrillated cellulose have been developed. However, it is not clear how the addition of these fine CFs influences the physical properties and structure of paper. This study examines the benefits of adding fine CFs, including nano- and submicron-sized CFs, to paper by mixing them into unbeaten pulp, and discusses CF size differences between the micron and smaller scales. Two types of CFs were used in this study. One consists of micro-, submicron-, and nano-sized CFs (CF1) and another consists of nano- and submicron-sized CFs (CF2). The results show that both CF1 and CF2 enhance the tensile index, stretch at break, and tensile energy absorption of a handsheet. To explain these results, the fiber strength index and bond strengtn index were calculated using the Page's equation, and the tensile index for the handsheets with CF1 and CF2 showed a strong correlation with the bond strength index, thus suggesting that CF1 and CF2 were deposited in locations where there was interfiber bonding. However, differences were observed in the internal structures of the paper samples, indicating that CF2 did not change the pore volume and pore size of the resulting samples.
机译：近来，已经开发了各种细纤维素纤维（CF），例如纤维素纳米纤维和微纤化纤维素。但是，尚不清楚这些细CF的添加如何影响纸张的物理性质和结构。这项研究探讨了将精细的CF（包括纳米级和亚微米级的CF）混合到未打浆的纸浆中所带来的好处，并讨论了微米级和较小级之间的CF尺寸差异。在这项研究中使用了两种类型的CF。一个由微米，亚微米和纳米尺寸的CF（CF1）组成，另一个由纳米和亚微米尺寸的CF（CF2）组成。结果表明，CF1和CF2均可提高手抄纸的拉伸指数，断裂伸长率和拉伸能吸收率。为了解释这些结果，使用Page方程计算了纤维强度指数和粘结强度指数，CF1和CF2的手抄纸的拉伸指数与粘结强度指数具有很强的相关性，因此表明CF1和CF2沉积在纤维间粘合的位置。然而，在纸样品的内部结构中观察到差异，表明CF 2不会改变所得样品的孔体积和孔径。

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  • 来源
    《繊維学会誌》 |2015年第2期|121-126|共6页
  • 作者

    Ryota Kose; Kouki Yamaguchi; Takayuki Okayama;

  • 作者单位

    Division of Natural Resources and Ecomaterials, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan;

    Department of Environmental and Natural Resource Sciences, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan;

    Division of Natural Resources and Ecomaterials, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan;

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