Impact of mechanical refining and silane treatment on microfibrillated cellulose-reinforced polypropylene: mechanical, thermal, and hygrothermal performance

IF 4.8 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD

Cellulose Pub Date : 2025-08-11 DOI:10.1007/s10570-025-06708-3

Kunwu Guo, Zhen Huang, Chunjie Ye, Lexiang Wang, Hongzhi Liu

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引用次数: 0

Abstract

Microfibrillated cellulose (MFC) were prepared by different mechanical refining parameters and subsequently modified with 3-aminopropyltriethoxysilane (APTES) and hexadecyltrimethoxysilane (HDTMS), respectively. Effects of silane modification and mechanical refining parameters of MFC on the performance of MFC-reinforced polypropylene composites (PP/MFC) were systematically investigated. Mechanical properties, thermal characteristics, and hygrothermal durability of the PP/MFC composites were analyzed. Results reveal that an increase in refining cycle and pulp consistence can promote fibrillation, dimensional reduction, and enhanced water retention capacity of MFC. Notably, tensile and flexural properties of PP/MFC decreased with increasing refining cycles and pulp consistence. After the silylation of MFC, the APTES-treated MFC showed superior reinforcing efficiency compared to HDTMS-treated MFC. In contrast, the PP composite reinforced with HDTMS-treated MFC (PP/HDTMS-10W5P) exhibited superior hygrothermal performance than that of PP/APTES-10W5P one. Moreover, the silane treatments were further contributed to an increase of crystallinity and thermal stability due to the enhanced interfacial adhesion between MFC and PP. This work provided critical insights into tailoring PP/MFC composites in engineering applications.

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机械精炼和硅烷处理对微纤化纤维素增强聚丙烯的影响：机械、热和湿热性能

采用不同的机械精制参数制备了微纤化纤维素（MFC），分别用3-氨基丙基三乙氧基硅烷（APTES）和十六烷基三甲氧基硅烷（HDTMS）进行改性。系统研究了MFC的硅烷改性和机械精炼参数对MFC增强聚丙烯复合材料（PP/MFC）性能的影响。分析了PP/MFC复合材料的力学性能、热特性和湿热耐久性。结果表明，增加精炼周期和浆体浓度可以促进MFC的纤化，减小尺寸，提高保水能力。值得注意的是，PP/MFC的拉伸和弯曲性能随着精炼周期和纸浆浓度的增加而下降。经过硅基化处理的MFC，与hdtms处理的MFC相比，aptes处理的MFC表现出更好的增强效率。而hdtms处理的MFC增强PP复合材料（PP/HDTMS-10W5P）的热湿性能优于PP/APTES-10W5P复合材料。此外，硅烷处理进一步提高了MFC和PP之间的结晶度和热稳定性，因为MFC和PP之间的界面附着力增强了。这项工作为在工程应用中定制PP/MFC复合材料提供了重要的见解。

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.