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首页> 外文期刊>Advanced Materials >From Wood to Textiles: Top-Down Assembly of Aligned Cellulose Nanofibers
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From Wood to Textiles: Top-Down Assembly of Aligned Cellulose Nanofibers

机译：从木材到纺织品：对齐的纤维素纳米纤维的自顶向下组装

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摘要

Advanced textiles made of macroscopic fibers are usually prepared from synthetic fibers, which have changed lives over the past century. The shortage of petrochemical resources, however, greatly limits the development of the textile industry. Here, a facile top-down approach for fabricating macroscopic wood fibers for textile applications (wood-textile fibers) comprising aligned cellulose nanofibers directly from natural wood via delignification and subsequent twisting is demonstrated. Inherently aligned cellulose nanofibers are well retained, while the microchannels in the delignified wood are squeezed and totally removed by twisting, resulting in a dense structure with approximately two times higher mechanical strength (106.5vs 54.9MPa) and approximate to 20 times higher toughness (7.70vs 0.36MJ m(-3)) than natural wood. Dramatically different from natural wood, which is brittle in nature, the resultant wood-textile fibers are highly flexible and bendable, likely due to the twisted structures. The wood-textile fibers also exhibit excellent knitting properties and dyeability, which are critical for textile applications. Furthermore, functional wood-textile fibers can be achieved by preinfiltrating functional materials in the delignified wood film before twisting. This top-down approach of fabricating aligned macrofibers is simple, scalable, and cost-effective, representing a promising direction for the development of smart textiles and wearable electronics.
机译：由宏观纤维制成的高级纺织品通常是由合成纤维制成的，在过去的一个世纪中，它们改变了人们的生活。然而，石化资源的短缺极大地限制了纺织工业的发展。在此，展示了一种容易的自上而下的方法，该方法用于制造纺织用途的宏观木纤维（木纺织纤维），该木纤维直接由天然木材经过脱木素处理和随后的加捻而排列成行的纤维素纳米纤维。固有排列的纤维素纳米纤维可以很好地保留，而去木质的木材中的微通道则被挤压并通过扭曲完全去除，从而形成致密的结构，其机械强度（106.5vs 54.9MPa）大约高出两倍，而韧性（7.70）则高出约20倍vs 0.36MJ m（-3））。与天然木材相比，天然木材非常脆，与之截然不同，所得的木材纺织纤维具有很高的柔韧性和可弯曲性，可能是由于扭曲的结构。木质纺织纤维还具有出色的编织性能和可染性，这对纺织品的应用至关重要。此外，功能性木纺织纤维可通过在扭曲之前将功能性材料预渗入脱木质的木膜中来获得。这种自上而下的制造对齐大纤维的方法简单，可扩展且具有成本效益，代表了智能纺织品和可穿戴电子产品发展的有希望的方向。

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  • 来源
    《Advanced Materials》 |2018年第30期|1801347.1-1801347.8|共8页
  • 作者

    Jia Chao; Chen Chaoji; Kuang Yudi; Fu Kun; Wang Yilin; Yao Yonggang; Kronthal Spencer; Hitz Emily; Song Jianwei; Xu Fujun; Liu Boyang; Hu Liangbing;

  • 作者单位

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

    Univ Maryland Coll Pk, Dept Mat Sci & Engn, College Pk, MD 20742 USA;

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  • 正文语种 eng
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  • 关键词

    cellulose nanofibers; delignified wood; multifunctional; textile macrofibers; top-down;

    机译：纤维素纳米纤维;木质化;多功能;纺织大纤维;自上而下;

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