Tamesue Shingo, Yasuda Kento, Noguchi Shingo, Mitsumata Tetsu, Yamauchi Takeshi
Graduate School of Science and Technology and ‡Department of Material Science and Technology, Faculty of Engineering, Niigata University, 2-8050, Ikarashi, Nishi-ku, Niigata 950-2181, Japan.
Graduate School of Science and Technology and Department of Material Science and Technology, Faculty of Engineering, Niigata University, 2-8050, Ikarashi, Nishi-ku, Niigata 950-2181, Japan.
ACS Macro Lett. 2016 Jun 21;5(6):704-708. doi: 10.1021/acsmacrolett.6b00337. Epub 2016 May 23.
Adhering hydrogel systems are important particularly in the medical field because they can be used as adhesives cross-linking between living tissues. In this research, hydrogels including cationic substituents prepared via free-radical polymerization were brought into contact after applying an aqueous dispersion of the layered inorganic compound Micromica to their surfaces. As a result, the hydrogels adhered to each other due to the intercalation of cationic substituents included in the gel networks into the interlayers of Micromica. As the water content ratio of hydrogels decreased, the adhesive strength came to be higher, and finally the adhesively bonded joint supported a tensile load of 10 kg. Moreover, it was confirmed that the adhered hydrogels have high tolerance toward various environments, such as high or low temperatures and solvents.
粘附水凝胶体系尤其在医学领域很重要，因为它们可用作活组织之间交联的粘合剂。在本研究中，通过自由基聚合制备的含阳离子取代基的水凝胶在其表面涂上层状无机化合物微晶云母的水分散体后相互接触。结果，由于凝胶网络中包含的阳离子取代基插入微晶云母的层间，水凝胶彼此粘附。随着水凝胶含水量比例降低，粘合强度变得更高，最终粘合接头能够承受10千克的拉伸载荷。此外，证实了粘附的水凝胶对各种环境（如高温或低温以及溶剂）具有高耐受性。
