Hubei Provincial Key Laboratory of Green Materials for Light Industry, New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, China.
Hubei Provincial Key Laboratory of Green Materials for Light Industry, New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, China; Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
Int J Biol Macromol. 2022 May 31;208:741-747. doi: 10.1016/j.ijbiomac.2022.03.192. Epub 2022 Mar 31.
In contemporary life, plastic, a kind of petroleum carbon source, has been produced and used in varieties of applications. However, the vast consumption of petroleum-based plastic and the burning of agricultural wastes make the environmental problems increasingly severe. Furthermore, a large number of lignocellulosic resources (such as corncob and wheat straw) are often wasted and burned, which will aggravate the environmental damage. In this paper, we use unbleached corncob and wheat straw pulp to fabricate the lignin-containing cellulose bio-composites (LCBs) to reduce non-renewable energy consumption and utilize agricultural wastes. The LCBs were obtained by a direct manufacturing process in benzyltrimethyl ammonium hydroxide (BzMeNOH) aqueous solution under mild conditions, constituting an entwined composite structure of cellulose micro/nano-fibers. This unique micro/nano-structure provides bio-composites with the outstanding mechanical performance of 96.7 MPa and a high haze of 90.1%. Meanwhile, with the inherent lignin, the LCBs could filter over 81.8% UV-C. As the raw material used is pure natural lignocellulose, the bio-composites prepared have innate environmental friendliness. With exceptional mechanical strength, UV-shielding property, and innate environmental friendliness, the LCBs are possible and potential substitutes for traditional petroleum-based plastic that is easily aging or non-biodegradable.
在现代生活中，塑料作为一种石油碳源，已经在各种应用中得到了生产和使用。然而，石油基塑料的大量消耗和农业废弃物的燃烧使得环境问题日益严重。此外，大量的木质纤维素资源（如玉米芯和麦草）经常被浪费和燃烧，这将加剧环境破坏。在本文中，我们使用未经漂白的玉米芯和麦草浆来制备含有木质素的纤维素生物复合材料（LCB），以减少不可再生能源的消耗和利用农业废弃物。LCB 是在温和条件下用苄基三甲基氢氧化铵（BzMeNOH）水溶液直接制造工艺制备的，构成了纤维素微/纳米纤维的交织复合结构。这种独特的微/纳米结构使生物复合材料具有 96.7 MPa 的优异机械性能和 90.1%的高雾度。同时，由于固有的木质素，LCB 可以过滤超过 81.8%的 UV-C。由于所用的原料是纯天然的木质纤维素，因此制备的生物复合材料具有内在的环境友好性。由于具有优异的机械强度、遮光性能和内在的环境友好性，LCB 可能成为传统易老化或不可生物降解的石油基塑料的潜在替代品。
