02027nas a2200205   4500008004100000022001400041245011500055210006900170260006700239300001000306490000700316520126400323653001301587653001801600653001301618653001401631653002401645100002901669856012301698       2014                        eng d  a0730-667900aPhotopolymerization kinetics of block polyether based terminal urethane methacrylate with/without cross-linker0 aPhotopolymerization kinetics of block polyether based terminal u  a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcFEB  a214180 v333 a<p>The present work deals with the photopolymerization of difunctional macromonomer with a polyether chain and urethane methacrylate terminations. Macromonomeric formulations were prepared by mixing macromonomer with two different concentrations of photoinitiator. Formulations were also prepared by the addition of 10 wt% of soft-segmented difunctional cross-linker to the abovementioned macromonomic formulations. All formulations were then subjected to photopolymerization studies and the effects of light intensity on the photopolymerization kinetics were studied at two different isothermal conditions using photo differential scanning calorimetry (Photo DSC) with polychromatic radiation. The isothermal heat flow against time was recorded for all formulations and the kinetic parameters were noted. It was observed that the rate of maximum polymerization as well as peak maximum time showed a general trend. However, the ultimate conversion as well as the conversion at maximum rate did not show any trend due to diffusional restrictions imparted by the increase in viscosity with conversion. The photopolymerization of the formulations and curing kinetics including evaluation of autocatalytic model are discussed. (C) 2014 Wiley Periodicals, Inc.</p>10akinetics10aMacromonomers10aModeling10aPhoto DSC10aPhotopolymerization1 aReghunathan, Harikrishna  uhttps://library.ncl.res.in/content/photopolymerization-kinetics-block-polyether-based-terminal-urethane-methacrylate-0