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Preparation of porous polyurethanes by emulsion-templated step growth polymerization
Polymer ( IF 4.6 ) Pub Date : 2017-11-08 , DOI: 10.1016/j.polymer.2017.11.018
Imane Barbara , Marie-Anne Dourges , Hervé Deleuze

A new class of emulsion-templated macroporous polymers (polyHIPEs) was prepared by step-growth polymerization involving a low molecular weight triol and a commercially available diisocyanate. Several water-in-oil High Internal Phase Emulsions (HIPEs) were formulated by varying the nature of the monomer and the volume fraction of the inner phase. The addition of particles in the continuous phase to obtain composites was studied. The preparation of Pickering emulsions and non-aqueous emulsions was also investigated. The addition of a catalyst to the HIPE and subsequent polymerization followed by solvent elimination led to the corresponding polyurethane polyHIPEs. These materials were characterized by Scanning Electron Microscopy (SEM), FT-IR, 13C solid NMR, mercury intrusion porosimetry, nitrogen adsorption and thermal analysis. The materials obtained shows porosities up to 80% and a thermal stability comparable to commercial polyurethane foams.



中文翻译:

通过乳液模板逐步生长聚合制备多孔聚氨酯

通过涉及低分子量三醇和市售二异氰酸酯的逐步增长聚合反应制备了一类新型的乳液模板大孔聚合物(polyHIPEs)。通过改变单体的性质和内相的体积分数,配制了几种油包水型高内相乳液(HIPE)。研究了在连续相中添加颗粒以获得复合材料的方法。还研究了Pickering乳液和非水乳液的制备。向HIPE中添加催化剂并随后进行聚合,随后除去溶剂,得到了相应的聚氨酯聚HIPE。这些材料的特征是通过扫描电子显微镜(SEM),FT-IR,13C固体NMR,压汞法,氮吸附和热分析。所获得的材料显示出高达80%的孔隙率,并且热稳定性可与商用聚氨酯泡沫相媲美。

更新日期:2017-11-08
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