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Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.17 [2010] >
IJCT Vol.17(2) [March 2010] >
| Title: | Synthesis of a biodegradable polyacrylonitrile/sodium silicate nanocomposite fire retardant |
| Authors: | Samal, Ramakanta
Sahoo, Prafulla K |
| Keywords: | Emulsifier-free emulsion
Nanocomposite
Fire retardant
Biodegradation |
| Issue Date: | Mar-2010 |
| Publisher: | CSIR |
| Abstract: | Polyacrylonitrile (PAN)/Sodium silicate (SS) nanocomposite was
synthesized via non-conventional emulsifier free emulsion method using an in situ developed transition metal complex
Cu(II)/EDTA taking potassium monopersulfate (KMPS) as initiator, with a novel
motive of converting hydrophobic homopolymer PAN into hydrophilic nanocomposite
by the inclusion of SS to the homopolymer. The formation of the PAN/SS
nanocomposite was confirmed by infrared spectra (IR). Furthermore, as
evidenced by transmission electron microscopy (TEM), the composite so obtained
was found to have nano scale structure. X-ray diffraction (XRD) was carried out
suggesting that the silicate layers were exfoliated or intercalated during the
polymerization process. An increase in the thermal stability for the developed
nanocomposite was recorded by thermogravimetric analysis (TGA). The combustion
behaviour has been evaluated using oxygen consumption cone calorimeter and the
nanocomposite exhibited good fire retardancy. The PAN/SS nanocomposite was
found to be biodegradable as tested by sludge water and further confirmed by
scanning electron microscopy (SEM). |
| Page(s): | 139-144 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.17(2) [March 2010]
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