Reversible Formation of Interpenetrating Polymer Network Structure in Organic-Inorganic Polymer Hybrids
Reversible Formation of Interpenetrating Polymer Network Structure in Organic-Inorganic Polymer Hybrids
复制标题
有机-无机聚合物杂化物中互穿聚合物网络结构的可逆形成
DOI：
10.1295/polymj.30.990
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发表时间：
1998
期刊：
影响因子：
2.8
通讯作者：
Y. Chujo
中科院分区：
文献类型：
--
作者：
Y. Imai;K. Naka;Y. Chujo
提出了一种制备具有互穿聚合物网络（IPN）结构的有机-无机聚合物杂化材料的新方法。聚合物杂化物由具有香豆素部分作为可逆光交联侧基的聚（2-甲基-2-恶唑啉）合成（4）。结果表明，四甲氧基硅烷（TMOS）溶胶-凝胶反应的酸催化剂浓度对获得透明、均匀的聚合物杂化物至关重要。在不同波长的光照射下，香豆素基团在聚合物杂化物中发生可逆的光二聚反应。所得的聚合物杂化物是有机凝胶和硅胶的互穿网络。通过形成互穿网络结构，提高了聚合物杂化物的耐溶剂性能。
A new strategy to prepare organic-inorganic polymer hybrids having interpenetrating polymer network (IPN) structure is presented. Polymer hybrids were synthesized from poly(2-methyl-2-oxazoline) having coumarin moieties as reversibly photo-crosslinkable side groups (4). It was found that the concentration of acid catalyst for sol-gel reaction of tetramethoxysilane (TMOS) was essential to obtain transparent and homogeneous polymer hybrids. Reversible photo-dimerization of coumarin groups took place in the polymer hybrids by the irradiation of light with different wavelengths. The resulting polymer hybrids are IPN of organic gel and silica gel. Solvent-resistant property of the polymer hybrids was improved by formation of the IPN structure.