查詢結果分析
來源資料
頁籤選單縮合
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 |
---|---|
作 者 | 汪輝雄; 曾佑祥; | 書刊名 | 材料科學 |
卷 期 | 31:1 1999.03[民88.03] |
頁 次 | 頁19-27 |
分類號 | 465.3 |
關鍵詞 | 聚氨基甲酸酯; 接枝染料; 分散性染料; Polyurethanes; Grafting of dye; Disperse dye; |
語 文 | 中文(Chinese) |
中文摘要 | 在本研究中我們成功地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。在染料之遷徙性測試方面,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徙率 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 demonstrate 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 cosideration 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 mixture of PU and dyestuff. |
本系統中英文摘要資訊取自各篇刊載內容。