本研究利用常溫電漿活化聚丙烯纖維表面，經由兩種接枝方式將不同單體接枝於聚丙烯纖維表面。其一是電漿活化纖維表面後直接接枝硫脲(Thiourea)單體，改變硫脲濃度、接枝溫度；另一接枝方法為電漿活化纖維表面後，先接枝丙烯酸(Acrylic Acid)單體後再接枝硫脲單體改變硫脲濃度、NaOH濃度、接枝溫度，探討其去除溶液中銅離子之可行性，並以XPS分析其表面官能基之變化。
經由水分散失率及過氧化基量量測結果，Ar、N2、O2電漿均選擇電漿功率1000W、氣體壓力200mtorr、改質時間30秒之操作參數對聚丙烯纖維表面進行活化。由銅離子去除率結果顯示，電漿活化聚丙烯纖維表面接枝硫脲單體，硫脲濃度分別為0.1M、0.5M、1M，反應溫度為3°C、25°C、60°C，當銅離子初始濃度為40mg/L時去除率約為1.28%~5.67%。當聚丙烯纖維經電漿改質表面後接枝丙烯酸單體後最高去除率為22.50%。接枝丙烯酸單體與NaOH溶液反應後去除銅離子，由於離子交換能力增加因此提高銅離子去除效率。聚丙烯纖維經電漿改質表面後依序接枝丙烯酸單體與硫脲溶液，銅離子去除率可達64.53%。經由XPS表面分析之後，可以分析出接枝硫脲與丙烯酸單體後鍵結的改變，證實各單體接枝成功。由上述結果可知，聚丙烯纖維經電漿活化接枝不同單體，可成為一具有去除水中重金屬功能之濾材。

In this research, the low temperature plasma in conjunction with two types of monomers and various grafting operations was applied to activate the surface of polypropylene (PP) fiber for functional structures. For the PP fiber, the activation was optimized with the Ar, N2, and O2 plasmas at a condition of 1000 W of power, 200 mtorr of air pressure, and 30 sec of reaction time. In one of the grafting experiments (the first approach), the Thiourea monomer was directly grafted onto the surface of PP fiber after the plasma activation at various Thiourea concentrations and different grafting temperatures. In the other grafting experiment (the second approach), the activated PP fiber was grafted with acrylic acid (AAc), followed by the Thiourea monomer grafting procedure. Both products were used for copper ion removal experiments, and the surface analysis of these PP fabrics analyzed with X-ray photoelectron spectroscopy (XPS) demonstrated the presence and the function of grafted materials.
Results of copper removal experiments showed that the removal efficiencies range from 1.28 ~ 5.67% when the Thiourea concentrations were 0.1M, 0.5M and 1M at the reaction temperature of 3°C, 25°C, and 60°C in the first approach experiments. On the other hand, the copper removal efficiency increased to 64.53 % when the grafting procedure fellowed the AAc and Thiourea monomer grafting sequence in the second approach experiment. Results of XPS analyses showed the structure changes of the PP fiber and confirmed the monomer grafting. It was concluded that the PP fiber surface could be grafted with different monomers after plasma activation and the modified products could be potential adsorption materials for heavy metal removal in wastewater treatments.

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