Preparation and Properties of Bionanocomposites Based on Aminated Sucrose-Cured Epoxy Resins and Carboxymethyl Cellulose Nanofibers

IF 4.7 3区工程技术 Q2 ENGINEERING, ENVIRONMENTAL

Journal of Polymers and the Environment Pub Date : 2025-01-18 DOI:10.1007/s10924-025-03490-y

Jun Watanabe, Kaito Sugane, Mitsuhiro Shibata

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引用次数: 0

Abstract

Bionanocomposites composed of bio-based epoxy resins and cellulose nanofibers are attracting extensive attention as sustainable materials contributing to carbon neutrality and reduced dependence on oil resources. In this study, as a water-soluble epoxy resin system, a mixture of bio-based epoxy resin [polyglycerol polyglycidyl ether (PGPE)] and petroleum-based flexible epoxy resin [polyethylene glycol diglycidyl ether (PEGDGE)] at an epoxy ratio of 2:1 was used. As a bio-based and water-soluble epoxy hardener, 3-[(2-aminoethyl)thio]propyl-etherified sucrose (NSCR) with an amine functionality of ca. 7, which was synthesized by the thiol-ene reaction of cysteamine hydrochloride and allyl-etherified sucrose, was used. A bio-based epoxy network (BEN) was prepared by drying and curing an aqueous solution of PGPE, PEGDGE, and NSCR with an epoxy/NH₂ ratio of 1/1. Bionanocomposites of BEN and carboxymethyl cellulose nanofibers (CMCNFs) were successfully prepared by directly mixing PGPE, PEGDGE, NSCR, and CMCNF in water without any solvent-exchange of the cellulosic nanofibers, which is necessary in conventional methods. The BEN/CMCNF bionanocomposites had excellent fiber dispersibility, and the tensile strength and modulus increased with increasing CMCNF content owing to the excellent reinforcement effect of the CMCNFs.

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基于氨基化蔗糖固化环氧树脂和羧甲基纤维素纳米纤维的仿生复合材料的制备与性能

由生物基环氧树脂和纤维素纳米纤维组成的生物纳米复合材料作为碳中和和减少对石油资源依赖的可持续材料受到广泛关注。本研究采用生物基环氧树脂[聚甘油聚缩水甘油酯醚（PGPE）]与石油基柔性环氧树脂[聚乙二醇二缩水甘油酯醚（PEGDGE）]以2:1的环氧比例混合而成的水溶性环氧树脂体系。以盐酸半胱胺与烯丙基醚化蔗糖为原料，经巯基反应合成胺官能约为7的3-[（2-氨基乙基）硫代]丙基醚化蔗糖（NSCR）为生物基水溶性环氧固化剂。以PGPE、PEGDGE和NSCR为原料，以环氧树脂/氨比为1/1的水溶液干燥固化，制备了生物基环氧树脂网络（BEN）。通过在水中直接混合PGPE、PEGDGE、NSCR和CMCNF，成功制备了BEN和羧甲基纤维素纳米纤维（CMCNF）的生物纳米复合材料，而无需进行常规方法所必需的溶剂交换。本/CMCNF生物纳米复合材料具有优异的纤维分散性，由于CMCNF具有良好的补强作用，其抗拉强度和模量随CMCNF含量的增加而增加。

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来源期刊

Journal of Polymers and the Environment 工程技术-高分子科学

CiteScore

9.50

自引率

7.50%

发文量

297

审稿时长

9 months

期刊介绍： The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.