TY - JOUR
T1 - The microstructure of poly(butylene terephthalate) copolymers via 13C NMR sequence distribution analysis: Solid-state copolymerization versus melt copolymerization
AU - Jansen, M.A.G.
AU - Goossens, J.G.P.
AU - Wit, de, G.
AU - Bailly, C.M.E.
AU - Koning, C.E.
PY - 2006
Y1 - 2006
N2 - Two diols, 2,2-bis(4-[hydroxyethoxy]phenyl)propane (Dianol 220 (R)) and bis(2-hydroxyethyl)terephthalate (BHET), were incorporated into poly(butylene terephthalate) (PBT) by solid-state polymerization (SSP) and melt polymerization (MP). Different PBT/diol ratios were used to obtain copolymers with different compositions. C-13 NMR spectroscopy was used to analyze the sequence distribution and the data analysis was discussed in detail. Both Dianol and BHET were randomly incorporated in the MP copolymers. For both PBT-Dianol and PBT-BHET copolymers obtained via SSP, a non-random, blocky microstructure was obtained. For the PBT-Dianol copolymers, the randomness increased for increased fractions of incorporated Dianol. For the PBT-BHET copolymers, the randomness continuously decreased with increased fractions of incorporated BHET.
AB - Two diols, 2,2-bis(4-[hydroxyethoxy]phenyl)propane (Dianol 220 (R)) and bis(2-hydroxyethyl)terephthalate (BHET), were incorporated into poly(butylene terephthalate) (PBT) by solid-state polymerization (SSP) and melt polymerization (MP). Different PBT/diol ratios were used to obtain copolymers with different compositions. C-13 NMR spectroscopy was used to analyze the sequence distribution and the data analysis was discussed in detail. Both Dianol and BHET were randomly incorporated in the MP copolymers. For both PBT-Dianol and PBT-BHET copolymers obtained via SSP, a non-random, blocky microstructure was obtained. For the PBT-Dianol copolymers, the randomness increased for increased fractions of incorporated Dianol. For the PBT-BHET copolymers, the randomness continuously decreased with increased fractions of incorporated BHET.
U2 - 10.1016/j.aca.2005.05.063
DO - 10.1016/j.aca.2005.05.063
M3 - Article
SN - 0003-2670
VL - 557
SP - 19
EP - 30
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
IS - 1-2
ER -