Preparation and Characterization of Self-Colored Waterborne Polyurethane and Its Application in Eco-Friendly Manufacturing of Microfiber Synthetic Leather Base
Preparation and Characterization of Self-Colored Waterborne Polyurethane and Its Application in Eco-Friendly Manufacturing of Microfiber Synthetic Leather Base
复制标题
DOI：
10.3390/polym10030289
复制
发表时间：
2018-03-01
期刊：
影响因子：
5
通讯作者：
Jin, Liqiang
中科院分区：
文献类型：
--
作者：
Wang, Yulu;Jin, Liqiang
为了减少N，N-二甲基甲酰胺（DMF）和染料对环境的污染，合成了一种新型的自着色水性聚氨酯（SCPU），并将其用于超细纤维合成革（MS-Leather）基布的制备。采用活性艳红K-2G与水性聚氨酯反应，然后通过第一代超支化聚（胺-酯）进行扩链，制备了SCPU。随着染料的引入，SCPU的傅里叶变换红外（FTIR）光谱在1118 cm（-1）[S=O]、1413 cm（-1）[N=N]和1635 cm（-1）[C= N]处出现了新的吸收峰，SCPU的平均粒径增加到162 nm。SCPU在19.27度处的X射线衍射（XRD）峰强度为1310 cts。SCPU在200-280 ℃的热稳定性低于对照样品;然而，在高于360 ℃的温度下，它得到改善。最后，用SCPU制备了不含DMF的免染色MS皮革基料。结果发现，染料主要分布在聚氨酯基体中，而不是在微纤维。此外，在水和皂溶液两者中洗涤之前和之后，基底的颜色变化分别为0.93和4.21。这表明，该基料的水洗色牢度优于皂洗色牢度。
A novel self-colored waterborne polyurethane (SCPU) was synthesized and used in the preparation of a microfiber synthetic leather (MS-Leather) base in order to reduce the pollution caused by N, N-dimethylformamide (DMF) and dyes. The SCPU was prepared using the reaction of a reactive brilliant red K-2G with a waterborne polyurethane which was then extended via a first generation of hyperbranched poly(amine-ester). With the introduction of the dye, new absorption peaks at 1118 cm(-1) [S=O], 1413 cm(-1) [N=N], and 1635 cm(-1) [C= N] appeared in the Fourier transform infrared (FTIR) spectrum of SCPU, and SCPU mean particle size increased to 162 nm. The X-ray diffraction (XRD) peak intensity of SCPU at 19.27 degrees was 1310 cts. The thermal stability of SCPU at 200-280 degrees C was inferior to that of the control sample; however, it improved at temperatures above 360 degrees C. Finally, a free-dyeing MS-Leather base prepared by using SCPU without DMF was manufactured. It was found that the dyes were distributed mainly in the polyurethane matrix rather than in the microfibers. Moreover, the color changes of the base before and after being washed in both a water and a soap solution were 0.93 and 4.21, respectively. This indicated that the base's washing color fastness to water was better than to a soap solution.