Premium
Synthesis of new polyesters with chelating subunits by solution and interfacial polycondensation
Author(s) -
Ismail M,
Mhenni F,
Gallo R,
Périchaud A
Publication year - 2001
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.771
Subject(s) - condensation polymer , polyester , polymer chemistry , ethylene glycol , differential scanning calorimetry , ether , molecular mass , yield (engineering) , methylene , amorphous solid , materials science , chemistry , organic chemistry , polymer , physics , metallurgy , thermodynamics , enzyme
New polyesters have been prepared by solution and interfacial polycondensation of acid chlorides obtained from bis‐α,ω‐polymethylene‐[(2‐methoxy)phenoxy]acetic acids, acid‐ether siderophores AE n ( n being the number of methylene units), and diols including bisphenol A, ethylene glycol and propanediol. For interfacial polycondensation, average molecular weights range from 1000 to 4500 g mol −1 ; at higher temperature the molecular weights increase but the yield is smaller. Differential scanning calorimetry shows T g ranging from −5 to + 110 °C. Polyesters are crystalline with n = 6 and amorphous with n = 2 and 4; in addition, increasing n in AE n increases molecular weights and T g values. In solution polycondensation, the average molecular weights are around 3000 g mol −1 and T g is low. © 2001 Society of Chemical Industry