本文利用聚丙烯與咖啡渣在不同比例下進行混煉，先製得一系列之PP/咖啡渣複合材料，其次在另外加入椰殼纖維粉再製得一系列PP/咖啡渣/椰殼纖維粉之複合材料，上述複合材料皆經過相關儀器之檢測。經實驗結果得知：PP/咖啡渣複合材料，在咖啡渣用量增加時，臭效果會越好，另外複合材料楊氏係數及殘餘量也會隨著增加，但複合材料之最大抗拉強力、斷裂伸長率隨及Td10會隨著下降;另在加入椰殼纖維粉製成之複合材料，其消臭效果反而會下降，而複合材料之最大抗拉強力、楊氏係數會及殘餘量隨之增強，但斷裂伸長率及Td10仍維持下降之趨勢。

In this paper, polypropylene and coffee grounds in different proportions were kneaded to obtain a series of PP / coffee ground composites (PC). In addition, coir powder was added into PP / coffee ground to obtain a series of PP / coffee grounds / coir powder composite materials (PCC). The composite materials have been measured with various instruments. The experiment results show that PC composite with the increase of coffee grounds leads to better smelly effect and higher Young's modulus and the residual amount. However, the maximum tensile strength, elongation at break and Td10 of the composite material decrease while increasing the amount of coffee grounds. In PCC composite materials, its deodorizing effect is fall compared with PP / coffee grounds. The maximum tensile strength, Young's modulus and residual amount of the PCC composite materials are enhanced, but the elongation at break and Td10 show decline.

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