High-strength composites made of cellulose and renewable thermosetting resins based on 5-HMF

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2025-05-21 DOI:10.1016/j.reactfunctpolym.2025.106343

Irena Pulko , Edita Jasiukaityte Grojzdek , Vesna Žepič Bogataj , Miroslav Huskić

引用次数: 0

Abstract

Thermosetting resins based on renewable 5-HMF and phenol were synthesized and the influence of different reaction conditions (in aqueous solution and bulk, without catalyst and with HCl as catalyst) is discussed. The aim of the research was to synthesize a liquid resin that can be used to produce composites using the same processing methods as the epoxy composites. The liquid resin was obtained without a catalyst. The structure of the resin was determined by ¹H, ¹³C, 2D and APT NMR spectroscopy. The resin was cured with hexamethylenetetramine. Composites with a resin content of 22 % and a paper content of 78 % were prepared and characterized. The moduli of elasticity of these composites were between 6.4 GPa and 7.4 GPa and the tensile strength was up to 91 MPa. No glass transition was observed in the dynamic mechanical analysis at temperatures up to 180 °C, and the loss modulus decreased only by 50 %.

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由纤维素和基于5-羟甲基糠醛的可再生热固性树脂制成的高强度复合材料

合成了基于可再生5-羟甲基糠醛和苯酚的热固性树脂，并讨论了不同反应条件（水溶液、散装、无催化剂和盐酸作催化剂）对热固性树脂的影响。该研究的目的是合成一种液体树脂，该树脂可用于生产复合材料，使用与环氧复合材料相同的加工方法。液体树脂是在没有催化剂的情况下得到的。树脂的结构通过1H、13C、2D和APT NMR进行了表征。树脂用六亚甲基四胺固化。制备了树脂含量为22%、纸含量为78%的复合材料，并对其进行了表征。复合材料的弹性模量在6.4 ~ 7.4 GPa之间，抗拉强度高达91 MPa。在高达180°C的动态力学分析中，没有观察到玻璃化转变，损耗模量仅下降了50%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.