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Tuning Hydrogel Mechanics Using the Hofmeister Effect
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2015-09-11 , DOI: 10.1002/adfm.201502241 Maarten Jaspers 1 , Alan E. Rowan 1 , Paul H. J. Kouwer 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2015-09-11 , DOI: 10.1002/adfm.201502241 Maarten Jaspers 1 , Alan E. Rowan 1 , Paul H. J. Kouwer 1
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The mechanical properties of hydrogels are commonly modified by changing the concentration of the molecular components. This approach, however, does not only change hydrogel mechanics, but also the microstructure, which in turn alters the macroscopic properties of the gel. Here, the Hofmeister effect is used to change the thermoresponsiveness of polyisocyanide hydrogels. In contrast to previous Hofmeister studies, the effect is used to change the phase transition temperatures and to tailor the mechanics of the thermoresponsive (semiflexible) polymer gels. It is demonstrated that the gel stiffness can be manipulated over more than two orders of magnitude by the addition of salts. Surprisingly, the microstructure of the gels does not change upon salt addition, demonstrating that the Hofmeister effect provides an excellent route to change the mechanical properties without distorting other influential parameters of the gel.
中文翻译：
利用霍夫迈斯特效应调整水凝胶力学
通常通过改变分子组分的浓度来改变水凝胶的机械性能。然而，这种方法不仅改变了水凝胶的力学，而且改变了微观结构，进而改变了凝胶的宏观特性。在此，霍夫迈斯特效应用于改变聚异氰化物水凝胶的热响应性。与以前的Hofmeister研究相反，该效应用于改变相变温度并调整热响应性（半柔性）聚合物凝胶的力学性能。已经证明，通过添加盐，可以在超过两个数量级上操纵凝胶刚度。出乎意料的是，添加盐后凝胶的微观结构不会改变，
更新日期：2015-09-11
中文翻译：
利用霍夫迈斯特效应调整水凝胶力学
通常通过改变分子组分的浓度来改变水凝胶的机械性能。然而，这种方法不仅改变了水凝胶的力学，而且改变了微观结构，进而改变了凝胶的宏观特性。在此，霍夫迈斯特效应用于改变聚异氰化物水凝胶的热响应性。与以前的Hofmeister研究相反，该效应用于改变相变温度并调整热响应性（半柔性）聚合物凝胶的力学性能。已经证明，通过添加盐，可以在超过两个数量级上操纵凝胶刚度。出乎意料的是，添加盐后凝胶的微观结构不会改变，
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