使用碱介质对丝瓜和玉米纤维进行表面改性

IF 5.3 Q2 ENGINEERING, ENVIRONMENTAL Cleaner Engineering and Technology Pub Date : 2024-03-13 DOI:10.1016/j.clet.2024.100736
Fahmida-E- Karim , Md. Redwanul Islam , Muhtasim Habib Supto , Abdullah Al Mamun Rafi , Tanima Rahman Tanni , Hosne Ara Begum
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引用次数: 0

摘要

农业生物质是一种众所周知的可再生资源,具有很高的回收利用率。其中两种是丝瓜海绵和玉米皮/玉米纤维。丝瓜海绵具有多孔结构,可有效用于加固轻质复合材料结构。玉米纤维也适用于这一竞赛。这两种纤维都需要进行表面改性,以提高机械强度,并与复合材料制造中的基体材料形成更高的界面结合力。这项调查包括用 5 克/升、10 克/升和 15 克/升的 NaOH 处理这两种材料,以描述其物理化学特性发生的变化。处理持续 60 分钟,温度为 90 °C。然后用醋酸中和样品。采用 ASTM D1445 技术测量纤维束的断裂力和伸长率,并采用 ASTM D570 程序测定处理样品的吸水率变化率。傅立叶变换红外光谱测试和扫描电镜检查显示,丝瓜纤维和玉米纤维表面的污染物已被清除。测试结果表明,经 15 g m/L 处理的纤维的改性性能有所改善,其伸长率为 3.02%,丝瓜纤维的等效断裂力为 5.12 千克,玉米纤维的等效断裂力为 5.72 千克。根据傅立叶变换红外光谱图片显示的官能团强度变化,天然污染物已被排除。不过,扫描电子显微镜图片显示,每升样品用 15 克 NaOH 处理后,表面变得平滑,这可能是纤维与基质成分脆性交错的原因。此外,与未经处理的纤维相比,吸水性提高了 300% 以上。总之,用 10 克/升 NaOH 处理过的样品可作为两种纤维的优质复合增强材料。
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Surface modification of Luffa and Maize fibers by using alkali medium

Agricultural biomass is a well-known renewable resource that has a high rate of recycling. Two of them are luffa sponge and corn husk/maize fibers. Luffa sponge may be effectively used to reinforce lightweight composite constructions because of its polypore structure. For this race, maize fiber is also appropriate. Surface modifications for both of the fibers are needed for increasing mechanical strength with higher interfacial bonding with the matrix materials of composite manufacturing. This investigation involved treating both materials with 5 g/L, 10 g/L, and 15 g/L of NaOH in order to describe the alterations occurring on their physio-chemical characteristics. The therapy lasted 60 min and was administered at 90 °C. Following that, acetic acid was used to neutralize the samples. The ASTM D1445 technique was used to measure the bundle fibers' breaking force and elongation, and the ASTM D570 procedures were used in order to determine the water absorption variation % in the treated samples. The FTIR test and SEM examination revealed the contaminants that were eliminated from the surface of Luffa and Maize fibers. The test findings demonstrated improved modification behaviors for the 15 g m/L treated fibers, which had an elongation percentage of 3.02% and an equivalent breaking force of 5.12 kg for the Luffa fiber and 5.72 kg for the maize fiber. Natural contaminants were eliminated as a result of variations in functional group intensity shown in the FTIR pictures. However, SEM pictures showed that the surface smoothed out for samples treated with 15 g per liter of NaOH, which may be the cause of the fiber's brittle interlocking with the matrix components. Moreover, water absorbency rose by over 300% compared to the untreated fibers. In summary, samples treated with 10 g/L NaOH might serve as superior reinforced materials of composite for both types of fibers.

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来源期刊
Cleaner Engineering and Technology
Cleaner Engineering and Technology Engineering-Engineering (miscellaneous)
CiteScore
9.80
自引率
0.00%
发文量
218
审稿时长
21 weeks
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