Selection of a material for their end use in engineering applications depends on the properties of materials. In this paper, physical and mechanical properties of teak sawdust-polypropylene composite are evaluated and most suitable composition for outdoor applications have been determined by using TOPSIS technique of optimization. Virgin and recycled polypropylene are mixed with teak sawdust to fabricate the composite with and without maleated polypropylene (MAPP) using compression molding method. TOPSIS technique of optimization involves prioritizing the performance indicators. Important properties such as tensile strength, flexural strength, impact strength, hardness, melt flow index, water absorption and thickness of swell are selected for the study. The composition 50% recycled polypropylene, 45% wood sawdust and 5% MAPP by weight is found to be most suitable for outdoor applications.

在工程应用中最终使用材料的选择取决于材料的属性。本文对柚木屑-聚丙烯复合材料的物理和机械性能进行了评估，并使用优化的TOPSIS技术确定了最适合户外应用的成分。将初生聚丙烯和再生聚丙烯与柚木锯末混合，使用压缩成型方法在有无马来酸化聚丙烯（MAPP）的情况下制造复合材料。TOPSIS优化技术涉及对性能指标进行优先排序。选择诸如拉伸强度，弯曲强度，冲击强度，硬度，熔体流动指数，吸水率和溶胀厚度等重要特性。成分50％回收聚丙烯，