Thermally reversible IPN organic-inorganic polymer hybrids utilizing the Diels-Alder reaction
Thermally reversible IPN organic-inorganic polymer hybrids utilizing the Diels-Alder reaction
复制标题
DOI：
10.1021/ma991899b
复制
发表时间：
2000-06-13
期刊：
影响因子：
5.5
通讯作者：
Chujo, Y
中科院分区：
文献类型：
--
作者：
Imai, Y;Itoh, H;Chujo, Y
利用马来酰亚胺和呋喃之间的Diels-Alder反应，以聚合物杂化物的形式形成有机聚合物和硅胶的互穿聚合物网络（IPN）。在聚（2-甲基-2-恶唑啉）侧链上分别引入马来酰亚胺和呋喃基团。在这些聚合物的存在下，通过四甲氧基硅烷（TMOS）的酸催化溶胶-凝胶反应制备聚合物杂化物。通过紫外光谱和红外光谱证实了马来酰亚胺与呋喃之间的Diels-Alder反应的进行。通过形成互穿网络结构，提高了聚合物杂化物的耐溶剂性。逆Diels-桤木反应在升高的温度下发生，并且这些反应可以循环。
Formation of an IPN (interpenetrating polymer network) of organic polymer and silica gel in the form of polymer hybrids was accomplished by utilizing the Diels-Alder reaction between maleimide and furan. Maleimide and furan groups were introduced in the side chain of poly(2-methyl-2-oxazoline), respectively. Polymer hybrids were prepared by acid-catalyzed sol-gel reaction of tetramethoxysilane (TMOS) in the presence of these polymers. The progress of the Diels-Alder reaction between maleimide and furan was confirmed by UV and FT-IR spectroscopy. The solvent resistance of the polymer hybrids was improved by the formation of the IPN structure. Retro-Diels-Alder reaction takes place at an elevated temperature, and these reactions can be cycled.