ABSTRACT

The effect of alkali-treatment of the chemical composition, structure, thermal stability, tensile strength, and surface topology of dichrostachys cinerea bark fibers (DCFs) was analyzed by Chemical analysis, XRD, FTIR, TGA, SEM, and AFM in this investigation. The alkali treatment of raw DCFs with 5% (w/v) NaOH and 90 min of soaking period were recognized to be optimal by the chemical analysis. It is interesting to notice that optimally treated DCFs own improved cellulose (78.4 wt.%), lesser hemicellulose (4.6 wt.%) and lignin (9.12 wt.%) contents, increased crystallinity index (65.63%), tensile strength, thermal stability, and improved surface topography compared with raw DCFs. The findings revealed that optimally treated DCFs were appropriate fiber as reinforcement material in polymer composites. The various weight percentages of raw and optimally treated DCF composites were prepared by hand lay up and compression molding methods. Further, the mechanical testing of prepared composites was undergone as per the ASTM standard.

摘要

碱处理对灰竹化学成分、结构、热稳定性、抗拉强度和表面拓扑结构的影响在本研究中，通过化学分析、XRD、FTIR、TGA、SEM 和 AFM 对树皮纤维 (DCF) 进行了分析。化学分析认为，用 5% (w/v) NaOH 和 90 分钟的浸泡时间对原料 DCF 进行碱处理是最佳的。有趣的是，经过优化处理的 DCF 具有改进的纤维素 (78.4 wt.%)、较少的半纤维素 (4.6 wt.%) 和木质素 (9.12 wt.%) 含量、增加的结晶度指数 (65.63%)、拉伸强度、热稳定性，并与原始 DCF 相比改善了表面形貌。研究结果表明，经过优化处理的 DCF 是聚合物复合材料中作为增强材料的合适纤维。各种重量百分比的原料和经过优化处理的 DCF 复合材料通过手糊和压缩成型方法制备。更远，