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Tailor‐made unsaturated poly(ester‐ amide) network that contains monomeric lactate sequences
Author(s) -
Xiao Congming,
He Yueying
Publication year - 2007
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.2220
Subject(s) - monomer , differential scanning calorimetry , amide , glass transition , fourier transform infrared spectroscopy , polymer chemistry , amorphous solid , materials science , chemical structure , infrared spectroscopy , scanning electron microscope , polymer , chemistry , crystallography , organic chemistry , chemical engineering , composite material , engineering , physics , thermodynamics
A novel unsaturated poly(ester‐amide) network (UPEAN) that contains isolated CC double bonds, monomeric lactate sequences, rigid benzyl side‐groups, amide groups and crosslinking points has been designed and synthesized. The structure of the intermediate and UPEAN was verified with Fourier transform infrared spectroscopy. Pores in UPEAN generated in situ were examined with scanning electron microscopy. Differential scanning calorimetry analysis shows that UPEAN is amorphous and its glass transition temperature is around 34 °C. It is found that UPEAN exhibits thermosensitive shape‐recovery characteristics. The maximum percentage weight loss of UPEAN is 10 and 42% after immersing the samples in active sludge at ambient temperature for 146 days and in 0.1 mol L −1 phosphate‐buffer saline at 37 °C for 103 days, respectively, which suggests that UPEAN is degradable. Copyright © 2007 Society of Chemical Industry