Synthesis of Non-oxide Porous Ceramics Using Random Copolymers as Precursors

    Authors

    X. Q. Wang; K. W. Wang; J. Kong; Y. G. Wang;L. A. An

    Comments

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    Abbreviated Journal Title

    J. Mater. Sci. Technol.

    Keywords

    Non-oxide porous ceramics; Polymer-derived ceramics; Random copolymer; SIALCN CERAMICS; WATER-VAPOR; POLYMER; OXIDATION/CORROSION; ROUTES; PORES; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering

    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 degrees C to form random polysilazane-polystyrene copolymers. The copolymers were then pyrolyzed at 500 degrees 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 500 m(2)/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.

    Journal Title

    Journal of Materials Science & Technology

    Volume

    31

    Issue/Number

    1

    Publication Date

    1-1-2015

    Document Type

    Article

    Language

    English

    First Page

    120

    Last Page

    124

    WOS Identifier

    WOS:000347904300018

    ISSN

    1005-0302

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