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Novel synthesis of polymer and copolymer nanoparticles by atomized microemulsion technique and its characterization
Author(s) -
Mishra Satyendra,
Chatterjee Aniruddha
Publication year - 2011
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1646
Subject(s) - materials science , differential scanning calorimetry , copolymer , microemulsion , polyacrylonitrile , chemical engineering , nanoparticle , thermogravimetric analysis , polymer , fourier transform infrared spectroscopy , particle size , ammonium persulfate , polymer chemistry , glass transition , thermal stability , monomer , pulmonary surfactant , nanotechnology , composite material , physics , engineering , thermodynamics
The present paper relates to the atomized process for the synthesis of nanoparticles of polystyrene (nPS), polyacrylonitrile (nPAN), and poly(styrene/acrylonitrile) (nP[SAN]) copolymers with different monomer ratios and with controlled particle size in the range from 10 to 100 nm. In this process, ammonium persulfate (APS) was used as thermal initiator, along with sodium dodecyl sulfate (SDS) and n‐pentanol (n‐Pt) as surfactant and cosurfactant, respectively. The effect of different parameters on particle size and morphology of polymer nanoparticles has been reported in this work. Transmission electron microscopy (TEM) study showed the changes in particle morphology of pure nPS, nPAN, and their copolymers. Structural property and interaction of PS and PAN were investigated by Fourier transform infrared (FTIR) spectroscopy and X‐ray diffraction (XRD). The effect of particle size and crystalline structure on glass transition temperature ( T g ) and melting temperature ( T m ) were also investigated by differential scanning calorimetry (DSC). Thermal stability of polymer nanoparticles was studied by thermo gravimetric analyzer (TGA) and it showed that the copolymer nanoparticles of nP[SAN] were more stable with minimum weight loss ( W L ). Copyright © 2010 John Wiley & Sons, Ltd.