Multifunctional porous solids derived from tannins - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2013

Multifunctional porous solids derived from tannins

Alain Celzard
Vanessa Fierro
Weigang Zhao

Résumé

Tannins are extremely valuable, non toxic, wood extractives combining reactivity towards aldehydes, low cost, natural origin and easy handling. When polymerized in the presence of suitable chemicals including blowing agent, ultra lightweight rigid tannin-based foams are obtained. If pyrolyzed under inert gas, reticulated carbon foams having the same pore structure and the same density are obtained. The most remarkable features of tannin-based foams are the following: mechanical resistance similar to, or higher than, that of commercial phenolic foams, tuneable pore size and permeability, infusibility, very low thermal conductivity, cheapness, ecological character, high resistance to flame and to chemicals. Carbon foams have even better properties and are also electrically conducting. Consequently, various applications are suggested for organic foams: cores of sandwich composite panels, sound and shock absorbers and thermal insulators, whereas carbon foams can be used as porous electrodes, filters for molten metals and con-osive chemicals, catalyst supports and adsorbents.
Fichier principal
Vignette du fichier
Celzard_2013_J._Phys.__Conf._Ser._416_012023.pdf (608.47 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01295725 , version 1 (08-12-2016)

Identifiants

Citer

Alain Celzard, Vanessa Fierro, Antonio Pizzi, Weigang Zhao. Multifunctional porous solids derived from tannins. NAMES10: NEW ACHIEVEMENTS IN MATERIALS AND ENVIRONMENTAL SCIENCES, Oct 2010, Nancy, France. ⟨10.1088/1742-6596/416/1/012023⟩. ⟨hal-01295725⟩
120 Consultations
91 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More