Dry- and swollen-state morphology of novel high surface area polymers

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• 作者：Stefano Sterchele ; Paolo Centomo ; Marco Zecca ; Libu拧e Hankov谩 ; Karel Je艡谩bek
• 关键词：Porous polymers ; Morphology ; Swollen state ; Syneresis
• 刊名：Microporous and Mesoporous Materials
• 出版年：1 February, 2014
• 年：2014
• 卷：185
• 期：Complete
• 页码：26-29
• 全文大小：332 K

文摘

This study looked into the morphology of novel mesoporous divinylbenzene polymers with extremely high surface areas, both in the dry state using a conventional nitrogen adsorption/desorption method and in the swollen state by inverse steric exclusion chromatography. By comparing the dry- and swollen-state morphologies it was possible to obtain a more comprehensive understanding of the porous structure of the material. The novel poly(divinylbenzene) was found to have a foam-like morphology in which the polymeric matrix formed a continuous phase with thin walls surrounding bubble-like cavities generated by a microsyneresis mechanism. Such a morphology is completely different from that of other styrenic polymers with high-surface areas.