Synthesis and Characterization of PET Block Copolymers Containing Long Aromatic Segments
In this paper, the reaction of dimethyl terephthalate (DMT) and p-hydroxybenzoic acid (PHB) was carried out to synthesize rigid molecule, which was used as the third monomer in the melt polycondensation with terephthalic acid (PTA) and ethylene glycol (EG) to prepare PET block copolymer containing rigid aromatic segments. From FTIR it is conformed that the third monomer was mainly a series of low molecular weight products by transesterification and esterification. Poly (ethylene terephthalate) (PET) and its block copolymer with different contents of the third monomer (0.5％, 2％, 4％, mol ratio relative to PET) were prepared. The structure and properties of PET copolyesters were studied and compared with pure PET by means of differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR) and polarized optical microscopy (POM), etc. The copolymers exhibited significant different properties compared with pure PET.
Poly (ethylene terephthalate) (PET) The third monomer Copolyester Synthesis
ZHANG Junwu HAN Keqing LIN Seng YU Muhuo
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, P. R. China
国际会议
上海
英文
201-204
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）