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首页> 外文期刊>Journal of Applied Polymer Science >Structural variation in soft segment of waterborne polyurethane acrylate nanoemulsions
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Structural variation in soft segment of waterborne polyurethane acrylate nanoemulsions

机译：水性聚氨酯丙烯酸酯纳米乳液软链段的结构变化

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High solid content waterborne polyurethane acrylate (WPUA) nanoemulsions are prepared as textile finishes. Two structurally different soft segments, that is, polyether and polyester are used with isophorone diisocyanate, 2-hydroxyethyl methacrylate, and butyl acrylate. Structural variations are investigated in features of nanoemulsions and their coatings. Physical properties of nanoemulsions, such as average particle size, stability, solid content, and viscosity, are investigated. Nanoemulsions with high solid content, that is, 40-47% are produced without any internal emulsifier. Average nanoparticle size, that is, <100 nm is confirmed by dynamic light scattering and atomic force microscopy (AFM). Fourier transform infrared spectroscopy proved synthesis of proposed WPUA products. Synergistic effect of polyurethane and acrylate is observed in chemical and water resistance of WPUA. Differential scanning calorimetry (DSC) and thermogravimetric analysis indicate stable uniformly cross-linked network of WPUA. Application of nanoemulsions on 100% cotton fabric shows a significant improvement in tear strength, which is more pronounced for polyester-based WPUA. Scanning electron microscope images of treated fabric samples show good adhesion of nanoemulsions on cotton surface. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41706.
机译：高固含量的水性聚氨酯丙烯酸酯（WPUA）纳米乳液可作为纺织品整理剂。两种结构上不同的软链段，即聚醚和聚酯，与异佛尔酮二异氰酸酯，甲基丙烯酸2-羟乙酯和丙烯酸丁酯一起使用。研究了纳米乳液及其涂层的结构变化。研究了纳米乳液的物理性质，例如平均粒径，稳定性，固体含量和粘度。在没有任何内部乳化剂的情况下生产具有高固含量，即40-47％的纳米乳液。通过动态光散射和原子力显微镜（AFM）确认平均纳米颗粒尺寸，即<100 nm。傅里叶变换红外光谱证明了所提出的WPUA产品的合成。在WPUA的耐化学性和耐水性中观察到聚氨酯和丙烯酸酯的协同作用。差示扫描量热法（DSC）和热重分析表明WPUA具有稳定的均匀交联网络。在100％棉织物上使用纳米乳液显示出抗撕强度的显着提高，这对于聚酯基WPUA尤为明显。处理过的织物样品的扫描电子显微镜图像显示纳米乳液在棉表面上具有良好的粘附性。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41706。

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