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Differential scanning calorimetry investigation of curing of bisphenolfurfural resins
Author(s) -
Patel Pradip S.,
Shah Praful P.,
Patel Shanti R.
Publication year - 1986
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760261704
Subject(s) - furfural , differential scanning calorimetry , curing (chemistry) , bisphenol a , bisphenol , materials science , polymer chemistry , bisphenol s , nuclear chemistry , catalysis , chemistry , organic chemistry , composite material , epoxy , thermodynamics , physics
Bisphenolic resins have been prepared by alkali catalyzed condensation of bisphenol‐F, bisphenol‐A, and bisphenol‐C, respectively, with furfural. The resin samples have been characterized by elemental analysis, dilute solution viscosity measurement, and measurement of number‐average molecular weight. Curing reactions of these bisphenolic resins with hexamine have been investigated by differential scanning calorimetry. The overall apparent activation energies for the curing have been found to be 24 ± 2, 34.2 ± 1.9, and 36.8 ± 2.3 kcal/mole for bisphenol‐F‐furfural, bisphenol‐A‐furfural, and bisphenol‐C‐furfural resin, respectively. The curing reactions have been found to follow an overall first‐order kinetics.