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ARTICLE
A Study on the Effect of Reaction Parameters on Viscosity and Molecular Weight of Hexafluoropropylene (HFP) based Perfluoropolyethers (PFPEs)
SAURABH SAXENAa, PRATEEK MALIKa, GEETHA SESHADRIa,*, AJAY K. TYAGIa, UTTAM KUMAR MANDALb
a
Shriram Institute for Industrial Research, New Delhi 110007, India.
b
University School of Chemical Technology, Guru Gobind Singh Indraprastha University,
Sector-16C, Dwarka, New Delhi 110078, India.
* Corresponding Author: e-mail:
Journal of Polymer Materials 2019, 36(1), 39-51. https://doi.org/10.32381/JPM.2019.36.01.4
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
19F-NMR
analysis for structural confirmation.
Keywords
Cite This Article
APA Style
SAXENA, S., MALIK, P., SESHADRI, G., TYAGI, A.K., MANDAL, U.K. (2019). A study on the effect of reaction parameters on viscosity and molecular weight of hexafluoropropylene (HFP) based perfluoropolyethers (pfpes). Journal of Polymer Materials, 36(1), 39-51. https://doi.org/10.32381/JPM.2019.36.01.4
Vancouver Style
SAXENA S, MALIK P, SESHADRI G, TYAGI AK, MANDAL UK. A study on the effect of reaction parameters on viscosity and molecular weight of hexafluoropropylene (HFP) based perfluoropolyethers (pfpes). J Polym Materials . 2019;36(1):39-51 https://doi.org/10.32381/JPM.2019.36.01.4
IEEE Style
S. SAXENA, P. MALIK, G. SESHADRI, A.K. TYAGI, and U.K. MANDAL "A Study on the Effect of Reaction Parameters on Viscosity and Molecular Weight of Hexafluoropropylene (HFP) based Perfluoropolyethers (PFPEs)," J. Polym. Materials , vol. 36, no. 1, pp. 39-51. 2019. https://doi.org/10.32381/JPM.2019.36.01.4