• Saurabh Saxena
• Prateek Malik
• Geetha Seshadri
• Ajay K. Tyagi
• Uttam Kumar Mandal

Low molecular weight perfluoropolyethers (PFPEs) based on hexfluoropropylene (HFP) were synthesized by avoiding the direct exposure of UV to liquid HFP. Product of 1.5 cSt viscosity with 45 % yield was obtained after 9 hrs of reaction. Effect of temperature variation on yield and viscosity was also studied. Acidic characteristic of perfluoropolyethrs was determined by titrating it with KOH. Acid values were found very high which confirmed the higher no of chains in product. Perfluoropolyethers were subjected for thermal analysis and were analysed by TGA which revealed the higher proportion of low molecular weight perfluoropolyethers in the product. Structural analysis of Perfluoropolyethers was also performed by FT-IR. FT-IR analysis confirmed the presence of COOH and COF group at the end of the polymer chain.

Low molecular weight perluoropolyethers (PFPE’s), Photooxidation, Hexafluoropropyne

"Method development to synthesize Low molecular weight Perfluoropolyethers (PFPEs)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.259-267, May-2019, Available :http://www.jetir.org/papers/JETIRBM06042.pdf

"Method development to synthesize Low molecular weight Perfluoropolyethers (PFPEs)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp259-267, May-2019, Available at : http://www.jetir.org/papers/JETIRBM06042.pdf