El-Metwaly Esraa A, Mohamed Hadeel E, El-Basheer Tarek M, Moselhy Manal T H, Zulfiqar Sonia, Cochran Eric W, Maamoun Ahmed Abdelhamid
Department of Mechanical Engineering, Materials Engineering Program, Faculty of Engineering, Ain Shams University Cairo 11517 Egypt.
Department of Acoustics, Mass and Force Metrology Division, National Institute of Standards (NIS) El-Sadat Street, El-Haram El-Giza 12211 Egypt.
RSC Adv. 2024 Jul 29;14(33):23683-23692. doi: 10.1039/d4ra04025b. eCollection 2024 Jul 26.
This study explores the use of sugarcane bagasse (SCB), a byproduct of sugarcane processing, as a bio-filler in the production of flexible polyurethane foam (FPU), focusing on its benefits for both the environment and the economy. By varying the inclusion of SCB waste from 1 to 6 wt%, the research aims to enhance the FPU's mechanical and acoustic characteristics. Techniques such as Fourier transform infrared (FTIR) spectroscopy and field emission scanning electron microscopy (FESEM) were utilized to analyze the chemical structure and surface characteristics of both SCB and the FPU/SCB composites. Additionally, tests on gel fraction, density, and mechanical properties were conducted. The results indicate that adding 4 wt% SCB to FPU considerably improved the foam's properties. This modification resulted in a 148.63% increase in apparent density, a 228.47% rise in compressive strength, and a 116.24% boost in tensile strength. Furthermore, sound absorption across various frequency ranges was enhanced compared to the control foam. Additionally, the findings show that SCB effectively shifts sound absorption characteristics to lower frequencies. Specifically, at a low frequency of 500 Hz, the sound absorption coefficient increased to 0.4 with a foam thickness of 20 mm. This demonstrates that SCB can significantly improve FPU's performance, making it an attractive option for applications requiring noise mitigation, such as in the automotive and construction industries, thereby offering a sustainable solution to waste management and materials innovation.
本研究探索将甘蔗加工副产品甘蔗渣（SCB）用作软质聚氨酯泡沫（FPU）生产中的生物填料，重点关注其对环境和经济的益处。通过将SCB废料的添加量从1 wt% 变化到6 wt%，该研究旨在增强FPU的机械和声学特性。利用傅里叶变换红外（FTIR）光谱和场发射扫描电子显微镜（FESEM）等技术分析SCB以及FPU/SCB复合材料的化学结构和表面特性。此外，还进行了凝胶分数、密度和机械性能测试。结果表明，向FPU中添加4 wt% 的SCB可显著改善泡沫的性能。这种改性使表观密度提高了148.63%，抗压强度提高了228.47%，拉伸强度提高了116.24%。此外，与对照泡沫相比，在各个频率范围内的吸声性能均得到增强。此外，研究结果表明，SCB有效地将吸声特性转移到更低频率。具体而言，在500 Hz的低频下，当泡沫厚度为20 mm时，吸声系数增加到0.4。这表明SCB可显著改善FPU的性能，使其成为汽车和建筑等需要降噪应用的有吸引力的选择，从而为废物管理和材料创新提供可持续的解决方案。
