由香草基苯并恶嗪和硅烷表面改性短切碳纤维制成的绿色复合材料

Q2 Materials Science Polymers from Renewable Resources Pub Date : 2022-12-19 DOI:10.1177/20412479221147052
M. Derradji, K. Khiari, Oussama Mehelli, S. Abdous, Bouchra Amri, Raouf Belgacemi, Noureddine Ramdani, Abdeljalil Zegaoui, Wen-ben Liu
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引用次数: 2

摘要

遵循绿色化学的规律,利用可再生的环保资源,开发了一种新型的复合材料,即香兰素。后者作为酚醛前驱体用于微波合成生物基苯并恶嗪树脂(Va-BZ)。随后,通过添加不同数量的短切硅烷表面改性碳纤维(CFs)增强Va-BZ,开发出高性能绿色复合材料。通过1H NMR和傅里叶变换红外光谱对Va-BZ单体的化学结构进行了确证。通过红外光谱和热重分析评价了硅烷部分在CF表面的接枝情况。DSC分析证实了Va-BZ单体开环聚合的自催化作用。对所研制的绿色复合材料的力学性能进行了弯曲和拉伸试验研究。结果表明,20 wt. cf的最大用量提供了最好的效果,抗弯和抗拉强度分别为450和462 MPa。利用扫描电镜对断裂拉伸表面进行了研究,并阐明了增韧机理。同时,热重分析表明,CFs的引入显著提高了苯并恶嗪基体的热稳定性。总的来说,这项研究证实,更环保的方法也可以产生高性能复合材料,满足紧急应用的需求。
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Green composites from vanillin-based benzoxazine and silane surface modified chopped carbon fibers
By following the rules of green chemistry, a novel composite is developed from a renewable and ecofriendly resource, namely, vanillin. The latter was used as a phenolic precursor for the microwave synthesis of a bio-based benzoxazine resin (Va-BZ). Afterward, high-performance green composites were developed by reinforcing Va-BZ with various amounts of chopped silane surface modified carbon fibers (CFs). The chemical structure of the Va-BZ monomers was confirmed by 1H NMR and Fourier transform infrared spectroscopy. The grafting of the silane moiety on the CF surface was assessed by FTIR and TGA analyses. The autocatalytic ring opening polymerization of the Va-BZ monomers was confirmed by DSC analysis. The mechanical performances of the developed green composites were studied by flexural and tensile investigations. The findings suggested that the maximum amount of 20 wt. CFs afforded the best results, with flexural and tensile strengths of 450 and 462 MPa, respectively. The SEM was used to study the fractured tensile surfaces and elucidated the toughening mechanism. Meanwhile, the TGA showed that the introduction of the CFs markedly improved the thermal stability of the benzoxazine matrix. Overall, this study confirmed that greener approaches can also result in high-performance composites satisfying the needs of exigent applications.
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来源期刊
Polymers from Renewable Resources
Polymers from Renewable Resources Materials Science-Polymers and Plastics
CiteScore
3.50
自引率
0.00%
发文量
15
期刊介绍: Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.
期刊最新文献
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