Synthesis of Hollow Silica Nanospheres by Sacrificial Polystyrene Templates for Thermal Insulation Applications | Zendy

Linn Ingunn Christie Sandberg | Zendy; Tao Gao | Zendy; Bjørn Petter Jelle | Zendy; Arild Gustavsen | Zendy

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Synthesis of Hollow Silica Nanospheres by Sacrificial Polystyrene Templates for Thermal Insulation Applications

Author(s) -

Linn Ingunn Christie Sandberg,

Tao Gao,

Bjørn Petter Jelle,

Arild Gustavsen

Publication year - 2013

Publication title -

advances in materials science and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.356

H-Index - 42

eISSN - 1687-8442

pISSN - 1687-8434

DOI - 10.1155/2013/483651

Subject(s) - materials science , polystyrene , dispersity , polyvinylpyrrolidone , thermal conductivity , coating , fabrication , spheres , surface roughness , template , composite material , thermal insulation , styrene , chemical engineering , nanotechnology , copolymer , polymer chemistry , layer (electronics) , polymer , medicine , alternative medicine , physics , pathology , astronomy , engineering

Monodisperse polystyrene (PS) spheres with controllable size have been synthesized by a straight forward and simple procedure. The as-synthesized PS spheres have a typical diameter ranging from ~180 nm to ~900 nm, where a reduced sphere size is obtained by increasing the polyvinylpyrrolidone (PVP)/styrene weight ratio. The PS spheres function as sacrificial templates for the fabrication of hollow silica nanospheres (HSNSs) for thermal insulation applications. By modifying the silica coating process, HSNSs with different surface roughness are obtained. All resulting HSNSs show typically a thermal conductivity of about 20 mW/(mK), indicating that the surface phonon scattering is probably not significant in these HSNS samples

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