Synthesis Of Non-Oxide Porous Ceramics Using Random Copolymers As Precursors

Keywords

Non-oxide porous ceramics; Polymer-derived ceramics; Random copolymer

Abstract

In this paper, we reported a novel method for synthesis of non-oxide porous ceramics by using random copolymers as precursors. A silazane oligomer and styrene monomer were used as starting materials, which were copolymerized at 120°C to form random polysilazane-polystyrene copolymers. The copolymers were then pyrolyzed at 500°C to obtain porous ceramics by completely decomposing polystyrene (PS) and converting polysilazane (PSZ) into non-oxide Si-C-N ceramics. The obtained material contained a bi-model pore-structure consisting of both micro-sized and nano-sized pores with very high surface area of more than 500m2/g. We also demonstrated that the pore structure and surface area of the materials can be tailored by changing the ratio of the two blocks. Current results suggest a promising simple method for making multi-scaled porous non-oxide materials.

Publication Date

1-1-2015

Publication Title

Journal of Materials Science and Technology

Volume

31

Issue

1

Number of Pages

120-124

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.jmst.2014.04.008

Socpus ID

84922282393 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84922282393

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