Transparent and Hazy All-Cellulose Composite Films with Superior Mechanical Properties,ACS Sustainable Chemistry & Engineering

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Transparent and Hazy All-Cellulose Composite Films with Superior Mechanical Properties
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-04-09 00:00:00 , DOI: 10.1021/acssuschemeng.8b00814
Wen Hu ₁ , Gang Chen ₁ , Yu Liu ₁ , Yingyao Liu ₁ , Bo Li ₁ , Zhiqiang Fang _{1,

2}

Affiliation

A general and scalable strategy to achieve transparent and hazy cellulose films with excellent mechanical properties, especially folding endurance, remains an obstacle. Herein, we incorporate transparent carboxymethyl cellulose (CMC) into opaque but hazy paper of uniformly distributed lignocellulosic fiber network by a facile and scalable impregnation to fabricate transparent and hazy all-cellulose composite films with strong mechanical properties. The CMC serves as a matrix to enhance the transparency and smoothness, whereas the isotropic intertwined network of long and slender lignocellulosic fibers simultaneously acts as a reinforcing phase to improve the mechanical properties and a light scatting source to enhance the optical haze. Consequently, the resulting composite film combines a high transparency (up to 90%) and optical haze (up to 82%) at 550 nm with superior mechanical properties (140 MPa tensile strength, 8.5 MJ m^–3 toughness, and 3342 folding times). Moreover, this composite film demonstrated ultrasmoothness (Rq: 0.9 nm) and improved flame retardant performance. Mechanically robust, transparent, and hazy composite films with ultrasmoothness and enhanced fire retardancy may extend their opportunities in flexible optoelectronics.

中文翻译：

具有优异机械性能的透明且浑浊的全纤维素复合膜

实现具有优异机械性能，尤其是耐折性的透明且浑浊的纤维素膜的通用且可扩展的策略仍然是一个障碍。在本文中，我们将透明的羧甲基纤维素（CMC）通过容易且可扩展的浸渍法掺入到均匀分布的木质纤维素纤维网络的不透明但朦胧的纸中，以制造具有强机械性能的透明且朦胧的全纤维素复合膜。CMC用作增强透明度和平滑度的基质，而细长的木质纤维素纤维的各向同性交织网络同时充当增强相，以改善机械性能，并充当散射光源以增强光学雾度。所以，^–3韧性和3342折叠时间）。此外，该复合膜表现出超光滑度（Rq：0.9nm）并改善了阻燃性能。具有超光滑度和增强的阻燃性的机械坚固，透明且朦胧的复合薄膜可能会扩展其在柔性光电领域的机会。

更新日期：2018-04-09

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