Cindradewi Azelia Wulan, Bandi Rajkumar, Park Chan-Woo, Park Ji-Soo, Lee Eun-Ah, Kim Jeong-Ki, Kwon Gu-Joong, Han Song-Yi, Lee Seung-Hwan
Department of Forest Biomaterials Engineering, Kangwon National University, Chuncheon 24341, Korea.
Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea.
Polymers (Basel). 2021 Nov 15;13(22):3945. doi: 10.3390/polym13223945.
This study reports the preparation of a polybutylene succinate (PBS) film reinforced with pure cellulose nanofibril (PCNF) and lignocellulose nanofibril (LCNF) by a two-step process that consists of solvent dispersion and twin-screw extrusion. Compared to the conventional one-step process, this method offered improved mechanical properties. The addition of 5% CNF increased the tensile properties up to 18.8%. Further, the effect of the lignin content was also studied by using LCNF as a reinforcement. The LCNF was prepared with and without a deep eutectic solvent (DES) pretreatment to gain LCNF with a lignin content that varied between 5, 19, and 30%. The mechanical properties results show that a 5% addition of LCNF to the PBS matrix increased its tensile strength and elastic modulus. Further, the morphological and thermal properties of the composites were also studied in detail.
本研究报道了通过由溶剂分散和双螺杆挤出组成的两步法制备用纯纤维素纳米纤丝（PCNF）和木质纤维素纳米纤丝（LCNF）增强的聚丁二酸丁二醇酯（PBS）薄膜。与传统的一步法相比，该方法提供了改善的机械性能。添加5%的CNF使拉伸性能提高了18.8%。此外，还通过使用LCNF作为增强材料研究了木质素含量的影响。制备了经过和未经深共熔溶剂（DES）预处理的LCNF，以获得木质素含量在5%、19%和30%之间变化的LCNF。机械性能结果表明，向PBS基体中添加5%的LCNF提高了其拉伸强度和弹性模量。此外，还详细研究了复合材料的形态和热性能。
