Rahman Arafater, Khondoker Mohammad Abu Hasan
Industrial System Engineering, University of Regina, 3737 Wascana Pkwy, Regina, SK S4S, Canada.
Polymers (Basel). 2024 Nov 26;16(23):3289. doi: 10.3390/polym16233289.
The circular economic approach in polymer composite research has gained acceptance for offering low-cost, high-performance solutions. Sawdust-derived composites have drawn interest as alternatives in concrete and composite fabrication, addressing housing shortages and resource depletion. Sawdust concrete (SDC) and sawdust polymer composites (SDPC) are key areas under investigation, with SDC additionally aiding in carbon reduction in building materials. However, challenges arise due to sawdust's inherent hydrophilicity, porosity, and lower strength. This study introduces a novel approach by identifying specific chemical treatments, including alkali and silane, which effectively enhance sawdust's compressive and tensile strengths, moisture resistance, and durability, optimizing it for structural applications. The study evaluates SDC's compressive strength based on treatment type, concentration, and curing time, examining physical properties such as water absorption, moisture sensitivity, and fiber-matrix adhesion. The unique contribution lies in a detailed optimization analysis, revealing conditions under which sawdust reaches structural-grade performance, expanding its potential in sustainable construction. For SPDC, tensile strength improvements are assessed under various chemical compositions, showing that specific polymers form stronger fiber-matrix bonds for greater stability. Morphological studies further explore fiber-matrix compatibility, hydrophobicity, and failure mechanisms. By advancing the understanding of treatment efficacy, this review positions sawdust as a viable, low-cost material alternative, establishing a foundation for sustainable innovation in construction and bio-composite research. These findings contribute to sawdust's potential as a practical, eco-friendly building material.
聚合物复合材料研究中的循环经济方法已因其提供低成本、高性能解决方案而获得认可。源自锯末的复合材料作为混凝土和复合材料制造中的替代品引起了关注，有助于解决住房短缺和资源枯竭问题。锯末混凝土（SDC）和锯末聚合物复合材料（SDPC）是正在研究的关键领域，其中SDC还有助于降低建筑材料中的碳含量。然而，由于锯末固有的亲水性、孔隙率和较低的强度，出现了一些挑战。本研究引入了一种新方法，即确定特定的化学处理方法，包括碱处理和硅烷处理，这些方法可有效提高锯末的抗压强度、抗拉强度、耐湿性和耐久性，使其适用于结构应用。该研究根据处理类型、浓度和养护时间评估SDC的抗压强度，研究诸如吸水率、湿度敏感性和纤维与基体粘结等物理性能。其独特贡献在于进行了详细的优化分析，揭示了锯末达到结构级性能的条件，扩大了其在可持续建筑中的潜力。对于SPDC，在各种化学成分下评估了抗拉强度的提高情况，结果表明特定聚合物形成了更强的纤维与基体键，从而具有更高的稳定性。形态学研究进一步探索了纤维与基体的相容性、疏水性和失效机制。通过深化对处理效果的理解，本综述将锯末定位为一种可行的低成本材料替代品，为建筑和生物复合材料研究中的可持续创新奠定了基础。这些发现有助于挖掘锯末作为实用、环保建筑材料的潜力。
