SiO_2-PVAあるいはSiO_2-PEG系ポリマーハイブリッドの調製とバイブリッドゲルから作製した多孔性物質

概要

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Apparently homogeneous transparent gels (polymer hybrid gels) were prepared from TEOS and PVA or PEG. IR spectra and DTA curves for the gels and pore characteristics of porous materials obtained by heating gels were examined. PVA incorporated into a gel seemed to be bound to the surrounding 〓Si-O-Si〓 network more firmly than PEG. The pore volume by N_2 adsorption on a porous material made from the SiO_2-PEG system was much larger than that from the SiO_2-PVA system. Pore size distribution curve showed that most of pores in the porous material from the gel in the SiO_2-PEG6000 system were about 20Å in diameter, involving a little portion of somewhat larger pores. Difference in thermal behavior between PVA and PEG in polymer hybrid gel was discussed in terms of the difference in the ratio of hydrophilic to hydophobic groups in the original organic polymer.
社団法人日本セラミックス協会の論文
1993-05-01