Synthesis of hybrid organic-inorganic materials from interpenetrating polymer network chemistry
Synthesis of hybrid organic-inorganic materials from interpenetrating polymer network chemistry
复制标题
互穿聚合物网络化学合成有机-无机杂化材料
DOI：
10.1021/cm950417h
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
J. Barnes
中科院分区：
文献类型：
--
作者：
C. Jackson;B. Bauer;A. Nakatani;J. Barnes
有机-无机互穿聚合物网络的合成与SiO2相由溶胶-凝胶化学和有机相由聚（2-羟乙基丙烯酸酯）。通过小角散射和电子显微镜对所得的形貌进行了表征。当乙烯基聚合比溶胶-凝胶反应更快时，发生总相分离，得到非均相结构。对于两种聚合的可比速率，样品具有0.5 μm尺度的树枝状形态。相对于有机网络，二氧化硅相的更快形成产生刚性和光学透明的材料，具有如通过透射电子显微镜观察到的精细分散的结构。这些材料的玻璃含量为约0.15 g/g，富含SiO2的区域的尺寸为100埃或更小。还研究了四（2-（丙烯酰氧基）乙氧基）硅烷的添加，发现其促进有机相和无机相之间的相混合。
Organic−inorganic interpenetrating polymer networks were synthesized with an SiO2 phase made by sol−gel chemistry and the organic phase made from poly(2-hydroxyethyl acrylate). The resultant morphologies were characterized by small-angle scattering and electron microscopy. When the vinyl polymerization is more rapid than the sol−gel reaction, gross phase separation occurs giving a heterogeneous structure. For comparable rates of the two polymerizations, the specimens have a dendritic morphology on the scale of 0.5 μm. The more rapid formation of the silica phase relative to the organic network produces rigid and optically transparent materials, with a finely divided structure as seen by transmission electron microscopy. The glass content of these materials is about 0.15 g/g and the sizes of the SiO2-rich domains are 100 A or less. Addition of tetrakis(2-(acryloxy)ethoxy)silane was also studied and found to promote phase mixing between the organic and inorganic phases.