通过掺入植物衍生的疏水化合物对人造纤维素纤维进行疏水化处理,ACS Sustainable Chemistry & Engineering

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通过掺入植物衍生的疏水化合物对人造纤维素纤维进行疏水化处理
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-03-25 , DOI: 10.1021/acssuschemeng.1c00695
Kaniz Moriam ₁ , Marja Rissanen ₁ , Daisuke Sawada ₁ , Michael Altgen ₁ , Leena-Sisko Johansson ₁ , Dmitry Victorovitch Evtyugin ₂ , Chamseddine Guizani ₁ , Michael Hummel ₁ , Herbert Sixta ₁

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基于纤维素纤维的可持续纺织工业需要比现有疏水化方法更绿色的替代品，后者基本上是基于不可再生且昂贵的疏水剂，对环境造成不利影响。在本文中，我们报告了通过使用Ioncell技术掺入天然衍生的疏水性添加剂betulin（BE）和betulinic acid（BA）而生产的新型疏水性纤维素基纤维。掺入过程很简单，在干喷湿纺过程中不需要任何额外的步骤。含有高达10 wt％的BE和BA的纺丝原液是可纺的，纺出的纤维（10BE和10BA）保持其机械性能。与BE相比，掺有BA的纤维显示出均一的表面形态，表明BA与纤维素的相容性增加。所以，与掺入BE的纤维相反，掺入BA的纤维表现出更高的纱线可纺性。10BE和10BA纤维在制成的非织造布和纱线中均显示出疏水性（水接触角> 90°）。总而言之，我们开发了一种通过简单的生态友好且具有成本效益的方式对人造纤维素纤维进行疏水化处理的系统，该系统具有可扩展性和工业应用潜力。

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Hydrophobization of the Man-Made Cellulosic Fibers by Incorporating Plant-Derived Hydrophobic Compounds

The cellulosic fiber-based sustainable textile industry needs greener alternatives to the existing hydrophobization approaches—which are essentially based on nonrenewable and expensive hydrophobizing agents and adversely impact the environment. Herein, we report the production of novel hydrophobic cellulose based fibers produced by incorporating nature-derived hydrophobic additives—betulin (BE) and betulinic acid (BA) using the Ioncell technology. The incorporation process is simple and does not require any additional step during dry-jet wet spinning. Spinning dopes containing up to 10 wt % BE and BA were spinnable and the spun fibers (10BE and 10BA) maintained their mechanical properties. Compared to BE, BA-incorporated fiber showed homogeneous surface morphology suggesting the increased compatibility of BA with cellulose. Consequently, in contrast to BE-incorporated fibers, BA-incorporated fibers demonstrated higher yarn spinnability. Both 10BE and 10BA fibers showed hydrophobicity (water contact angle >90°) in the produced nonwovens and yarns. In summary, we developed a system for hydrophobizing man-made cellulose fiber via a simple eco-friendly and cost-effective way, which has potential for scalability and industrial applications.

更新日期：2021-04-05

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