Description:
<jats:p>Composite sol with spinnability was prepared from an aqueous solution using polyvinyl butyral (PVB), Al (NO<jats:sub>3</jats:sub>)<jats:sub>3</jats:sub>·9H<jats:sub>2</jats:sub>O (AN) and tetraethylorthosilicate (TEOS) via non-hydrolytic sol-gel method. The mullite fibers with good flexibility were also obtained. The viscosity of composite sol increased with the increasing PVB content, water-bathing temperature and aging time. FTIR spectroscopy of composite gel showed a new absorption peak due to the C=O group, which implied the presence of new reaction product. It could be explained by the reaction among PVB, AN and TEOS.</jats:p>