Preparation and characterization of plasticized starch / carbon black - oxide nanocomposites / Dayan Qian in Industrial & engineering chemistry research, Vol. 51 N° 23 (Juin 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 23 (Juin 2012) . - pp. 7941–7947 Titre : Preparation and characterization of plasticized starch / carbon black - oxide nanocomposites Type de document : texte imprimé Auteurs : Dayan Qian, Auteur ; Peter R. Chang, Auteur ; Pengwu Zheng, Auteur Année de publication : 2012 Article en page(s) : pp. 7941–7947 Note générale : Industrial chemistry Langues : Anglais (eng) Résumé : The carbon black-oxide (CBO) particles were prepared by oxidizing carbon black (CB) in a modified Hummer’s method to improve the dispersion of CBO in water. The carboxylic acid, epoxide groups, and hydroxyl groups were formed in the resulting golden CBO particles, which in the size of about 30–50 nm were smaller than CB particles. And the dispersion of CBO particles was so good in distilled water that CBO particles in aqueous solution followed the Lambert–Beer’s law well. The nanocomposites were also prepared using CBO or CB particles as the fillers in glycerol-plasticized starch (GPS) matrix by the casting process. CBO fillers had good dispersion in GPS matrix and exhibited an obvious reinforcing effect. Both tensile strength and Youngs modulous of GPS/CBO composites were higher than GPS/CB composites. In views of the values of water vapor permeability (WVP), GPS/CBO composites exhibited better water resistance than GPS/CB composites. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3001666 [article] Preparation and characterization of plasticized starch / carbon black - oxide nanocomposites [texte imprimé] / Dayan Qian, Auteur ; Peter R. Chang, Auteur ; Pengwu Zheng, Auteur . - 2012 . - pp. 7941–7947. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 23 (Juin 2012) . - pp. 7941–7947 Résumé : The carbon black-oxide (CBO) particles were prepared by oxidizing carbon black (CB) in a modified Hummer’s method to improve the dispersion of CBO in water. The carboxylic acid, epoxide groups, and hydroxyl groups were formed in the resulting golden CBO particles, which in the size of about 30–50 nm were smaller than CB particles. And the dispersion of CBO particles was so good in distilled water that CBO particles in aqueous solution followed the Lambert–Beer’s law well. The nanocomposites were also prepared using CBO or CB particles as the fillers in glycerol-plasticized starch (GPS) matrix by the casting process. CBO fillers had good dispersion in GPS matrix and exhibited an obvious reinforcing effect. Both tensile strength and Youngs modulous of GPS/CBO composites were higher than GPS/CB composites. In views of the values of water vapor permeability (WVP), GPS/CBO composites exhibited better water resistance than GPS/CB composites. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3001666

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