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題 名 | 可結合染料之聚氨基甲酸酯聚合體=The Polyurethane with Covalent Bond of Dye Molecule |
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作 者 | 汪輝雄; 曾佑祥; | 書刊名 | 中華民國紡織工程學會誌 |
卷 期 | 16:1 1998.04[民87.04] |
頁 次 | 頁1-17 |
分類號 | 465.2 |
關鍵詞 | 聚氨基甲酸酯; 接枝染料; 分散性染料; Polyurethanee; Grafting of dye; Disperse dye; |
語 文 | 中文(Chinese) |
中文摘要 | 聚氨基甲酸酯(PU)為一種彈性體,它可經紡絲製成Spandex彈性纖維,以及作為人造皮革之樹脂塗膜層。傳統上Spandex纖維大都採用酸性染性料或分散性染料,在高溫下(90~100℃)行長時間染色(60~80分鐘),相當浪費時間及能源,且染色堅牢度不佳,更會破壞PU硬鏈節區域的結構,使得抗張強度降低。在人造皮革方面,一般都以顏料與樹脂混合加以塗膜,其顏色較為灰暗,欠缺染料之鮮艷性。因此本研究設法合成能與染料分子接枝之PU,使染料分子不會因熱而產生遷徒現象,以改善其染色堅牢度。 在本研究中我們成功地在實驗室合成與染料分子以共價鍵結合之聚氨基甲酸酯,這些聚合體的結構以紅外線(IR)光譜證實具有染料分子鏈節的吸收峰,並製成薄膜,測試其固有黏度、物性、熱性質,及染色性等。 在黏度上,接枝染料之PU比未接枝染料之PU具有較低的固有黏度值,抗張強度也因染料分子之接枝使得分子間距離增大而有下降的現象,而斷裂點伸度卻隨著染料之接枝而增加。在熱性質方面,PU接上染料使得硬鏈節的Tgh增大,而對軟鏈節區域的Tgs、Tms似乎沒有影響。在染料之遷徒性測試方面,我們發現染料分子接枝之PU確實比PU與染料相混合者具有較低之耐熱遷徒率Mp%值。 |
英文摘要 | In this paper, we have successfully synthesized polyurethanes (PU) with a covalent bond of dye molecule via a coupling agent of epichlorohydrin. The structure is proven by infrared (IR) spectra, which exhibits the absorption peak of dye molecule as we expected. The dye grafted polyurethanes were used to evaluate their inherent viscosity, mechanical, heat properties, and also their dyeing behavior. For the inherent viscosity, the polyurethanes with the grafting of dye molecule demostrates a lower value of viscosity than those without grafting of dye molecule. The tensile strength is found to decrease with the grafting of dye molecule due to the farther separation of intermolecular distance of the grafted PU. But, the elongation at break is increased with the grafting of dye molecule. In consideration of the heat properties, polyurethanes with the grafting of dye molecule exhibit higher Tgh than those without dye molecule. However, their Tgs and Tms of soft segment between dyed and undyed PU seem to be similar. For dye migration property, the polyurethanes with the grafting of dye molecule are proven to be much lower thermal migration values (Mp%) than those of simply mix-cure of PU and dyestuff. |
本系統中英文摘要資訊取自各篇刊載內容。