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A simple and tailor‐made fabrication of porous silicon carbide from functionalized kraft pulp paper
Author(s) -
Bernard Mégane,
Lucas Romain,
Laadoua Hatim,
Khaldi Zineb,
Pradeilles Nicolas,
Rapaud Olivier,
Foucaud Sylvie,
Zerrouki Rachida,
Brouillette François
Publication year - 2020
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.4771
Subject(s) - materials science , silicon carbide , thermogravimetric analysis , porosity , ceramic , polymer , scanning electron microscope , composite material , fabrication , surface modification , pyrolysis , chemical engineering , medicine , alternative medicine , pathology , engineering
Porous silicon carbide (SiC) materials were fabricated using the polymer‐derived ceramics method with kraft pulp papers (KPP) and a commercial polycarbosilane, the allylhydridopolycarbosilane (AHPCS), as starting materials. For this, KPP, propargylated KPP, or phosphorylated KPP were used to be impregnated by the AHPCS, with or without Karstedt catalyst. The pyrolysed materials were characterized at different stages, by using thermogravimetric analysis (TGA) coupled with mass spectrometry, X‐ray diffraction (XRD), and scanning electron microscopy (SEM). Depending on the nature of the initial template, various architectured SiC ceramics were successfully obtained with adjustable porosities. The key role of the previous functionalization of the papers was highlighted in terms of interactions at the interface between the polymer and the lignocellulosic handsheets. It led to either replica or sacrificial template methods. Thus, it was possible to tune the open porosity of the porous carbon and β‐SiC materials between 14.8% and 92.9%, with ceramic yields varying from 12% to 71%.