@Article{JPM.2019.36.01.4,
AUTHOR = {SAURABH SAXENA, PRATEEK MALIK, GEETHA SESHADRI, AJAY K. TYAGI, UTTAM KUMAR MANDAL},
TITLE = {A Study on the Effect of Reaction Parameters on Viscosity and Molecular Weight of Hexafluoropropylene (HFP) based Perfluoropolyethers (PFPEs)},
JOURNAL = {Journal of Polymer Materials},
VOLUME = {36},
YEAR = {2019},
NUMBER = {1},
PAGES = {39--51},
URL = {http://www.techscience.com/jpm/v36n1/56067},
ISSN = {0976-3449},
ABSTRACT = {Medium molecular weight liquid perfluoropolyethers (840 u to 1372 u) were synthesized by
photopolymerization of hexafluoropropylene (HFP) in the presence of oxygen. Effects of
various reaction parameters such as temperature, pressure, UV wattage and reaction time
on yield, viscosity and molecular weight of PFPEs were studied. Out of all the parameters,
the effect of reaction temperature was found the most significant on molecular weight of
PFPEs. By increasing reaction temperature, viscosity and molecular weight of PFPEs where
decreased. By increasing the wattage of the lamp, viscosity and molecular weight of PFPEs
where also decreased. PFPEs obtained from reactions were subjected to FTIR and <sup>19</sup>F-NMR
analysis for structural confirmation.},
DOI = {10.32381/JPM.2019.36.01.4}
}