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Ultrasonochemical‐assisted fabrication and evaporation‐ induced self‐assembly (EISA) of POSS‐SiO 2 @Ag core/ABA triblock copolymer nanocomposite film
Author(s) -
Veerapandian Murugan,
Yun Kyusik
Publication year - 2010
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.20951
Subject(s) - materials science , nanocomposite , copolymer , chemical engineering , polymer chemistry , thermogravimetric analysis , ethylene glycol , fourier transform infrared spectroscopy , thermal stability , silsesquioxane , polymer , nanotechnology , composite material , engineering
Poly(ethylene glycol)‐octafunctionalized polyhedral oligomeric silsesquioxane (POSS) ( M n = 5576.6 g/mol) alloying agent stabilized amphiphilic silica@silver metalloid nanocomposite blended with a triblock copolymer poly( p ‐dioxanone‐ co ‐caprolactone)‐ block ‐poly(ethylene oxide)‐ block ‐poly( p ‐dioxanone‐ co ‐caprolactone) (POSS‐SiO 2 @Ag/PPDO‐ co ‐PCL‐ b ‐PEG‐ b ‐PPDO‐ co ‐PCL) has been synthesized in both water and in organic medium utilizing ultrasonochemical reaction. The POSS stabilized pre‐made metalloid was successfully dispersed in amphiphilic PPDO‐ co ‐PCL‐ b ‐PEG‐ b ‐PPDO‐ co ‐PCL (ABA) triblock copolymer matrix of molecular weight 45.9 × 10 4 g/mol. The mechanism of synthesis of high concentration of SiO 2 @Ag nanocomposite from TEOS/AgNO 3 (in the presence of NH 4 OH as catalyst/NaBH 4 as reductant) nonmetal/metal precursors and the successful EISA of POSS‐SiO 2 @Ag/ABA nanocomposite into films has been discussed. The successful synthesis of metalloid nanocomposite was morphologically accessed by field emission‐scanning electron microscopy, transmission electron microscopy and atomic force microscopy. Surface plasmon resonance was ensured from UV–visible spectral analysis. Identity and the crystallinity of as prepared nanocomposite were studied by X‐ray diffractometer. Structural and luminescence properties of the nanocomposite were examined by Fourier transform infrared spectroscopy and photoluminescence. Thermogravimetric analysis was carried out to study the thermal stability of the resulting hybrid nanocomposite. The resultant inorganic–organic nanocomposite can be easily suspended in water and would be useful in variety of applications. POLYM. COMPOS., 31:1620–1627, 2010. © 2009 Society of Plastics Engineers