用稻壳中富含木质素的木质纤维素纳米纤维生产壳聚糖基复合膜

IF 20.2 Q1 MATERIALS SCIENCE, PAPER & WOOD
Hye Jee Kang , Yeon Ju Lee , Jin Kyoung Lee , Irnia Nurika , Sri Suhartini , Deokyeong Choe , Dong Hyun Kim , Hoon Choi , Natasha P. Murphy , Ho Yong Kim , Young Hoon Jung
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引用次数: 0

摘要

木质纤维素纳米纤维(LCNFs)是指含有木质素的纤维素纤维,它同时保持了木质素和纤维素的特性,即分别具有疏水性和亲水性。预计 LCNF 中疏水木质素的存在是一种经济且有吸引力的选择,可改善聚合物的热性能和机械性能。因此,本研究以稻壳中富含糖分的废弃物为原料,经酸性预处理后制备富含木质素的 LCNFs。从预处理和酶水解后获得的富含木质素的固体馏分中制备出 LCNFs,然后将其作为添加剂加入壳聚糖薄膜中。在不同的 LCNFs 中,木质素含量的变化范围约为 50.6%-66.8%,其光学强度和机械性能也大不相同。这些可控过程可实现定制薄膜的形成。此外,预处理和酶水解后获得的富含葡萄糖的液体馏分可用作乙醇发酵的底物,从而实现稻壳生物质废物的完全利用。总之,富含木质素的生物质馏分有望成为壳聚糖-LCNF 薄膜的合适材料,并有可能提高生物材料产业的经济可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Production of chitosan-based composite film reinforced with lignin-rich lignocellulose nanofibers from rice husk

Production of chitosan-based composite film reinforced with lignin-rich lignocellulose nanofibers from rice husk

Lignocellulosic nanofibers (LCNFs), implying lignin-containing cellulose fibers, maintain the properties of both lignin and cellulose, which are hydrophobic and hydrophilic, respectively. The presence of hydrophobic lignin in LCNFs is expected to be an economical and attractive option that can improve the thermal and mechanical properties of polymers. Thus, this study was conducted to produce lignin-rich LCNFs from sugar-rich waste obtained from rice husks after acidic pretreatment. The LCNFs were produced from the lignin-rich solid fractions obtained after pretreatment and enzymatic hydrolysis, which were then incorporated as an additive into a chitosan-based film. The variations in lignin content in the range of approximately 50.6%–66.8% in differently obtained LCNFs gave significantly different optical strengths and mechanical properties. These controllable processes may allow for customized film formation. Additionally, the glucose-rich liquid fractions obtained after pretreatment and enzymatic hydrolysis were used as a substrate for ethanol fermentation to achieve total utilization of rice husk biomass waste. In conclusion, the lignin-rich biomass fraction holds promise as a suitable material for chitosan-LCNF film and has the potential to increase the economic feasibility of the biomaterial industry.

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来源期刊
Journal of Bioresources and Bioproducts
Journal of Bioresources and Bioproducts Agricultural and Biological Sciences-Forestry
CiteScore
39.30
自引率
0.00%
发文量
38
审稿时长
12 weeks
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