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首页> 外文期刊>Polymers for advanced technologies >Fine tuning of SAP properties via epoxy-silane surface modification
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Fine tuning of SAP properties via epoxy-silane surface modification

机译：通过环氧树脂 - 硅烷表面改性微调SAP性能

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摘要

Using 3-[(2,3-epoxypropoxy)-propyl]-trimethoxysilane as a surface modifier, superabsorbent polymers with improved gel strength in their swollen state and saline absorbency under load are synthesized. The products are characterized using attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), rheometry, scanning electron microscopy-energy dispersive X-ray analysis, contact angle, thermogravimetric analysis, water absorbency and gel content. The temperature and the duration effect of the surface-treatment process on residual monomer content are also investigated by high performance liquid chromatography. The gel strength (as shown by storage modulus) and absorbency under load are improved up to 3500-4000 Pa, and 30-40 g/g, respectively. It is suggested that the surface of the superabsorbent polymer particles has been modified by two mechanisms: i.e. interpenetrating polymer network and cross-linking. Moreover, the surface modification has enhanced thermo-stability and prohibited undesirable gel blockage. Depending on the post-treatment method used, the wetting behavior of particles is also altered. Copyright (C) 2017 John Wiley & Sons, Ltd.
机译：使用3 - [（2,3-环氧丙氧基） - 丙基] - 三甲氧基硅烷作为表面改性剂，合成具有改善的凝胶强度的超吸收性聚合物，并在负载下的盐水吸收性中得到改善。该产品的特征在于使用衰减的总反射率 - 傅里叶变换红外光谱（ATR-FTIR），流变学，扫描电子显微镜 - 能量分散性X射线分析，接触角，热重分析，吸水性和凝胶含量。通过高效液相色谱法研究了表面处理方法对残留单体含量的温度和持续时间效应。凝胶强度（如储存模量所示）和负载的吸收性分别提高至3500-4000Pa，分别为30-40g / g。建议超吸收性聚合物颗粒的表面已通过两种机制修饰：即互穿聚合物网络和交联。此外，表面改性具有增强的热稳定性和禁止的不希望的凝胶堵塞。取决于所用后处理方法，颗粒的润湿行为也被改变。版权所有（c）2017 John Wiley＆Sons，Ltd。

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