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Steam-generating composite sheets prepared using techniques in the papermaking process. 1. effective retention of iron powder in a sheet using fibrillated cellulose fibers / Yoshiaki Kumamoto in Industrial & engineering chemistry research, Vol. 48 N° 22 (Novembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 9922–9929 Titre : Steam-generating composite sheets prepared using techniques in the papermaking process. 1. effective retention of iron powder in a sheet using fibrillated cellulose fibers Type de document : texte imprimé Auteurs : Yoshiaki Kumamoto, Auteur ; Masataka Ishikawa, Auteur ; Hironobu Kawajiri, Auteur Année de publication : 2010 Article en page(s) : pp. 9922–9929 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Flexible  heat-  and  steam-generating  sheets  Iron  powder Résumé : Flexible heat- and steam-generating sheets are promising medical devices for human healthcare, and oxidation of iron powder in sheets has potential applications for this purpose. Hence, the preparation conditions of composite sheets containing iron powder, cellulose fiber and activated carbon powder using techniques in the papermaking process were investigated to increase the iron powder content as much as possible and improve retention ratios of iron powder in the sheets. When unfibrillated cellulose fibers were used without any retention aids, the total retention ratios of the components were less than 40%. By contrast, when highly fibrillated cellulose fibers were used in combination with a cationic/anionic dual polymer system, the total retention ratios at a basis weight of 217 g m−2 reached about 90%. Moreover, iron powder aggregates in the sheet surfaces as well as throughout the thickness of the sheet, and higher tensile and internal strengths were obtained by using highly fibrillated cellulose fibers. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900875u [article] Steam-generating composite sheets prepared using techniques in the papermaking process. 1. effective retention of iron powder in a sheet using fibrillated cellulose fibers [texte imprimé] / Yoshiaki Kumamoto, Auteur ; Masataka Ishikawa, Auteur ; Hironobu Kawajiri, Auteur . - 2010 . - pp. 9922–9929. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 9922–9929 Mots-clés : Flexible  heat-  and  steam-generating  sheets  Iron  powder Résumé : Flexible heat- and steam-generating sheets are promising medical devices for human healthcare, and oxidation of iron powder in sheets has potential applications for this purpose. Hence, the preparation conditions of composite sheets containing iron powder, cellulose fiber and activated carbon powder using techniques in the papermaking process were investigated to increase the iron powder content as much as possible and improve retention ratios of iron powder in the sheets. When unfibrillated cellulose fibers were used without any retention aids, the total retention ratios of the components were less than 40%. By contrast, when highly fibrillated cellulose fibers were used in combination with a cationic/anionic dual polymer system, the total retention ratios at a basis weight of 217 g m−2 reached about 90%. Moreover, iron powder aggregates in the sheet surfaces as well as throughout the thickness of the sheet, and higher tensile and internal strengths were obtained by using highly fibrillated cellulose fibers. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900875u

Steam-generating composite sheets prepared using techniques in the papermaking process. 2. relationships between sheet structures and steam-generation behavior / Yoshiaki Kumamoto in Industrial & engineering chemistry research, Vol. 48 N° 22 (Novembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 9930–9935 Titre : Steam-generating composite sheets prepared using techniques in the papermaking process. 2. relationships between sheet structures and steam-generation behavior Type de document : texte imprimé Auteurs : Yoshiaki Kumamoto, Auteur ; Masataka Ishikawa, Auteur ; Hironobu Kawajiri, Auteur Année de publication : 2010 Article en page(s) : pp. 9930–9935 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Sheet  structures  Steam-generation Résumé : Steam-generating sheets for disposable body warmers were prepared using techniques in papermaking processes, from slurries of iron powder, fibrillated cellulose fiber, and activated carbon powder with various weight ratios. Heat generation behavior of the composite sheets was compared with mat-formed samples. Composite sheets with the iron powder:cellulose fiber:activated carbon powder weight ratio of 86:6:8 had suitable heat generation temperatures in the range 40−42 °C and the longest duration time (>10 h), when exposed to air in the presence of 5% NaCl. On the basis of the results, a performance diagram relating the duration time at temperatures higher than 40 °C to the weight ratios of the three components was obtained. The steam-generation behavior of the composite sheets was superior to that of mat samples in terms of steam-generation rates, duration time, and other properties. After steam generation, the sheets became harder and stiffer than the original sheets through formation of fused iron oxide layers covering the sheet surfaces. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900876s [article] Steam-generating composite sheets prepared using techniques in the papermaking process. 2. relationships between sheet structures and steam-generation behavior [texte imprimé] / Yoshiaki Kumamoto, Auteur ; Masataka Ishikawa, Auteur ; Hironobu Kawajiri, Auteur . - 2010 . - pp. 9930–9935. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 9930–9935 Mots-clés : Sheet  structures  Steam-generation Résumé : Steam-generating sheets for disposable body warmers were prepared using techniques in papermaking processes, from slurries of iron powder, fibrillated cellulose fiber, and activated carbon powder with various weight ratios. Heat generation behavior of the composite sheets was compared with mat-formed samples. Composite sheets with the iron powder:cellulose fiber:activated carbon powder weight ratio of 86:6:8 had suitable heat generation temperatures in the range 40−42 °C and the longest duration time (>10 h), when exposed to air in the presence of 5% NaCl. On the basis of the results, a performance diagram relating the duration time at temperatures higher than 40 °C to the weight ratios of the three components was obtained. The steam-generation behavior of the composite sheets was superior to that of mat samples in terms of steam-generation rates, duration time, and other properties. After steam generation, the sheets became harder and stiffer than the original sheets through formation of fused iron oxide layers covering the sheet surfaces. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900876s