Characterization of Grewia bicolor fibre and its use in the development of composites

IF 1.3 Q2 MATERIALS SCIENCE, PAPER & WOOD

International Wood Products Journal Pub Date : 2023-04-03 DOI:10.1080/20426445.2023.2223936

B. Ndiwe, N. Konai, Achille Désiré Omgba Betené, A. Pizzi, Achille Gnassiri Wedaïna, Fotio Nzogning, A. Mewoli, Michel Mbere Taoga, Duval Tekam, Honore Bayangbe Kikmo, P. Kah

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引用次数: 1

Abstract

ABSTRACT The fibre of Grewia bicolor bark (GB) was extracted and used as reinforcement for the development fibreboards using orthophtalique unsaturated polyester (UP) as a matrix. Two methods of extraction of fibres were used, namely biological retting and chemical extraction by a sodium hydroxide solution at a 5% concentration. Chemical, Physical, mechanical, and thermal characteristics were determined using ATF FTIR, mechanical test and thermogravimetric analysis. The theoretical density of the characterized fibres was 1.30 g/cm3. The porosity decreases by 5% from the root to the leaves. The SEM analysis indicated the presence of fibrils coated with a rough sheath similar to a honeycomb cell structure. The use of NaOH in the extraction method removes the hemicellulose, pectin, wax, and lignin from the fibres. The average elasticity modulus of untreated and treated fibres are, respectively, E = 35.18 ± 2.25 MPa and E = 33.47 ± 2.35 MPa and internal bond of fibreboards are 0.98 ± 0.05 MPa and 1.06 ± 0.02 MPa.

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Grewia双色纤维的表征及其在复合材料开发中的应用

摘要提取了Grewia双色树皮纤维（GB），并将其用作以正丁醇不饱和聚酯（UP）为基体的开发纤维板的增强材料。使用了两种提取纤维的方法，即生物脱胶和用5%浓度的氢氧化钠溶液进行化学提取。使用ATF FTIR、机械测试和热重分析测定了化学、物理、机械和热特性。表征纤维的理论密度为1.30 g/cm3。从根到叶，孔隙率降低5%。SEM分析表明存在涂覆有类似蜂窝细胞结构的粗糙鞘的原纤维。在提取方法中使用NaOH去除纤维中的半纤维素、果胶、蜡和木质素。未处理纤维和处理纤维的平均弹性模量分别为E = 35.18 ± 2.25 MPa和E = 33.47 ± 2.35 MPa，纤维板内部粘结为0.98 ± 0.05 MPa和1.06 ± 0.02 MPa。

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International Wood Products Journal MATERIALS SCIENCE, PAPER & WOOD-

CiteScore

2.40

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