Crystallinity, Chemical, Thermal, and Dynamic Mechanical Properties of Rice Husk/Coco Peat Fiber Reinforced ABS Biocomposites

ABSTRACT

Disposing of agricultural waste is difficult, and the most significant challenge today is to find novel ways to utilize these residues. This work attempts to evaluate dynamic mechanical, thermal, crystallinity, and chemical properties of rice husk (RH) and coco peat (CP) acrylonitrile-butadiene-styrene (ABS) hybrid composites at varying fiber compositions. RH/CP hybrid composites at 20/0 wt.%, 5/15 wt.%, 10/10 wt.%, 15/5 wt.%, and 0/20 wt.% of RH/CP fibers were fabricated. The dynamic mechanical properties, such as the loss modulus, storage modulus, and damping factor, were investigated via dynamic mechanical analysis (DMA). Overall, the incorporation of single and hybrid RH and CP reinforcements reduced the crystallinity. Despite that, the chemical and damping properties were considerably enhanced. 15/5 RH/CP composite had a storage modulus of 1970 MPa, which is 11% lower than neat ABS at 2220 MPa. The tan δ of neat ABS was 0.7067, whereas 20/0 RH/CP had the highest tan δ at 2.0603. Based on DMA, the filler ratio did not influence the thermal property. Overall, the findings show that hybrid RH/CP/ABS composite at 15/5 wt.% of RH/CP fibers enables the substitution of synthetic ABS with an acceptable level of characteristics and will be particularly useful for damping applications.

摘要

农业废弃物的处理很困难,今天最重大的挑战是找到利用这些残留物的新方法. 本研究试图评估稻壳(RH)和椰子泥炭(CP)丙烯腈-丁二烯-苯乙烯(ABS)混杂复合材料在不同纤维成分下的动态力学、热、结晶度和化学性能。制备了重量百分比为20/0%、5/15%、10/10%、15/5%和0/20%的RH/CP混杂复合材料. 通过动态力学分析(DMA)研究了材料的动态力学性能,如损耗模量、储能模量和阻尼因子.总的来说,加入单一和混合RH和CP增强体会降低结晶度. 尽管如此,化学和阻尼性能仍得到了显著增强. 15/5rh/CP复合材料的储能模量为1970兆帕,比2220兆帕时的纯ABS低11%. 纯ABS的tanδ为0.7067,而20/0rh/CP的tanΔ最高,为2.0603. 基于DMA,填充比不影响热性能。总的来说,研究结果表明,重量百分比为15/5%的RH/CP/ABS混合复合材料能够以可接受的特性水平替代合成ABS,尤其适用于阻尼应用.

KEYWORDS:

• word
• natural fiber
• hybrid composite
• thermal stability
• dynamic mechanical analysis
• crystallinity
• chemical property

关键词:

• 单词
• 天然纤维
• 混合复合材料
• 热稳定性
• 动态力学分析
• 结晶度
• 化学性质

Acknowledgments

This research was funded by UniversitiTeknologi Malaysia and Ministry of Higher Education (MOHE) with Fundamental Research Grant (FRGS) Scheme FRGS/1/2020/TK0/UTM/02/59.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data Availability Statement

The raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.

Additional information

Funding

This work was supported by the Ministry of Higher Education (MOHE) [FRGS/1/2020/TK0/UTM/02/59].