Effects of nonsolvent molecular structure and its content on the formation of the macroporous polyarylate layer coated onto the polyethylene separator / Sang Chul Roh in Industrial & engineering chemistry research, Vol. 50 N° 22 (Novembre 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 22 (Novembre 2011) . - pp. 12596–12605 Titre : Effects of nonsolvent molecular structure and its content on the formation of the macroporous polyarylate layer coated onto the polyethylene separator Type de document : texte imprimé Auteurs : Sang Chul Roh, Auteur ; Kwon Won Song, Auteur ; C. K. Kim, Auteur Année de publication : 2012 Article en page(s) : pp. 12596–12605 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Macroporous Polyethylene Résumé : A macroporous polyarylate (PAR) layer was formed on a polyethylene (PE) separator from coating solutions containing PAR, tetrahydrofuran (THF) as the solvent, and various alcohols (or diols) as nonsolvents via a nonsolvent-induced phase separation (NIPS) process. The effects of the nonsolvent molecular structure and its content on the morphology of the coating layer were explored. Droplets grew by a coarsening process after the onset of phase separation by solvent evaporation, and then leveled off at a fixed droplet size. The final pore size increased with the molecular weight of the alcohol (or diol) when the composition of the coating solution was fixed. It increased as the nonsolvent content in the coating solution increased, while it decreased as the PAR content in the coating solution increased. The meltdown temperature of the separator increased with the macroporous PAR coating, while air permeability of the separator was reduced with the coating. Changes in the meltdown temperature and air permeability depended on the morphology of the coating layer. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201716m [article] Effects of nonsolvent molecular structure and its content on the formation of the macroporous polyarylate layer coated onto the polyethylene separator [texte imprimé] / Sang Chul Roh, Auteur ; Kwon Won Song, Auteur ; C. K. Kim, Auteur . - 2012 . - pp. 12596–12605. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 22 (Novembre 2011) . - pp. 12596–12605 Mots-clés : Macroporous Polyethylene Résumé : A macroporous polyarylate (PAR) layer was formed on a polyethylene (PE) separator from coating solutions containing PAR, tetrahydrofuran (THF) as the solvent, and various alcohols (or diols) as nonsolvents via a nonsolvent-induced phase separation (NIPS) process. The effects of the nonsolvent molecular structure and its content on the morphology of the coating layer were explored. Droplets grew by a coarsening process after the onset of phase separation by solvent evaporation, and then leveled off at a fixed droplet size. The final pore size increased with the molecular weight of the alcohol (or diol) when the composition of the coating solution was fixed. It increased as the nonsolvent content in the coating solution increased, while it decreased as the PAR content in the coating solution increased. The meltdown temperature of the separator increased with the macroporous PAR coating, while air permeability of the separator was reduced with the coating. Changes in the meltdown temperature and air permeability depended on the morphology of the coating layer. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201716m

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