碱处理和硅烷处理对细齿Grewia纤维物理力学性能的影响

Q2 Engineering

Journal of the Korean wood science and technology Pub Date : 2022-09-01 DOI:10.5658/wood.2022.50.5.325

Bhupesh Jain, R. Mallya, S. Nayak, Srinivas Shenoy Heckadka, S. Prabhu, G. Mahesha, G. Sancheti

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引用次数: 3

摘要

用3%、6%和9%的NaOH对Grewia serrulata纤维进行化学处理，持续4小时。此外，NaOH处理的纤维还用甲基丙烯酸3-（三甲氧基甲硅烷基）丙酯（硅烷）处理。将处理过的纤维的密度和拉伸强度等性能与未处理的纤维进行比较。在9%NaOH+硅烷处理的纤维的情况下获得了最高的密度，其比未处理的纤维高26.47%，这意味着半纤维素的有效去除。同样，在9%NaOH+硅烷处理的纤维的情况下也获得了最高的拉伸强度。观察到的天然纤维抗拉强度的增加与杂质、半纤维素和应力促进剂的去除以及在使其光滑的纤维表面上的沉积有关。通过估计化学处理引起的化学成分变化以及扫描电子显微镜和热重分析等表征技术，进一步验证了这些观察结果。

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Influence of Alkali and Silane Treatment on the Physico-Mechanical Properties of Grewia serrulata Fibres

Grewia serrulata fibres were chemically treated with 3%, 6%, and 9% NaOH for the duration of 4 h. Additionally, the NaOH-treated fibres were also treated with 3 – (trimethoxysilyl) propyl methacrylate (silane). Properties such as density and tensile strength of the treated fibres were compared against the untreated fibres. The highest density was obtained in the case of 9% NaOH + silane treated fibres, which was 26.47% higher than untreated fibres, implying effective removal of hemicellulose. Likewise, the highest tensile strength was also obtained in the case of 9% NaOH + silane treated fibres. The increment observed in the tensile strength of the natural fibres was related to the removal of impurities, hemicellulose, and stress-raisers as well as deposition over the fibre surface that smoothed it. These observations were further validated by estimating changes in chemical constituents due to chemical treatment along with characterization techniques such as scanning electron microscopy and thermogravimetric analysis.

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来源期刊

Journal of the Korean wood science and technology Materials Science-Materials Science (miscellaneous)

CiteScore

5.20

自引率

0.00%

发文量

期刊介绍： The Journal of the Korean Wood Science and Technology (JKWST) launched in 1973 as an official publication of the Korean Society of Wood Science and Technology has been served as a core of knowledges on wood science and technology. The Journal acts as a medium for the exchange of research in the area of science and technology related to wood, and publishes results on the biology, chemistry, physics and technology of wood and wood-based products. Research results about applied sciences of wood-based materials are also welcome. The Journal is published bimonthly, and printing six issues per year. Supplemental or special issues are published occasionally. The abbreviated and official title of the journal is ''J. Korean Wood Sci. Technol.''. All submitted manuscripts written in Korean or English are peer-reviewed by more than two reviewers. The title, abstract, acknowledgement, references, and captions of figures and tables should be provided in English for all submitted manuscripts.