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Effect of di‐ n ‐dodecyl phosphate on the transesterification reaction in a poly(butylene terephthalate)/polycarbonate blend
Author(s) -
Lei Caihong,
Chen Dahua
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28060
Subject(s) - copolyester , transesterification , differential scanning calorimetry , phosphate , crystallization , materials science , polycarbonate , polymer chemistry , nuclear chemistry , chemistry , organic chemistry , composite material , catalysis , polyester , physics , thermodynamics
The transesterification behavior of a poly(butylene terephthalate) (PBT)/polycarbonate (PC) blend with the addition of di‐ n ‐dodecyl phosphate was studied with differential scanning calorimetry (DSC) and infrared spectroscopy. The effects of triphenyl phosphate (TPP) and di‐ n ‐dodecyl phosphate on the suppression of transesterification were compared. The differences in the crystallization and melting temperatures during the two heating and cooling cycles in the DSC measurements were lower than those of the virgin PBT/PC blend, and di‐ n ‐dodecyl phosphate inhibited the formation of a random copolyester but did not suppress the formation of a block copolyester. The crystallization temperature of the PBT/PC blend in the presence of di‐ n ‐dodecyl phosphate was higher than that of the blend in the presence of TPP. Di‐ n ‐dodecyl phosphate was thus more effective than TPP in the inhibition of transesterification between PBT and PC. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008.