Crystallization Behavior of Polyethylene Glycol Terephthalate/Polyethylene Glycol Intercalated Block Copolymers

Abstract

Abstract: Polyethylene glycol terephthalate/polyethylene glycol(poly tetramethylene glycol)/Montmorillonite intercalated block copolymers, PET/PEG (PTMG)/MMT, were synthesized with different mass fractions and molecular weights of PEG. The dispersion of MMTin copolymer matrixes and the influence of PEGor PTMGon the crystallization behavior of PET/MMTwere studied. It was revealed that MMTlayers were dispersed at nano-scale in PET/PEGmatrixes. PEGor PTMGsegments improved the flexibility of PETmolecular chain, resulting in the decrease of the cold crystallization temperature of the intercalated block copolymers and the increase of the melt crystallization temperature. It meant that the crystallization rate of PET/PEG/MMTwas faster than that of PET/MMT. Among the copolymers we synthesized, PEG-2000 (mass fraction:6%) had the best promoting effect on the crystallization rate of PET/MMT.

Key words: Polyethylene glycol terephthalate/polyethylene glycol(PET/PEG), Montmorillonite, Intercalated block copolymer, Crystallization behavior, Nanocomposite

CLC Number:

O631

TrendMD:

JIN Xiao-Fang, WANG Ping, YI Guo-Zhen, YANG Yu, ZHANG Guo-Yao . Crystallization Behavior of Polyethylene Glycol Terephthalate/Polyethylene Glycol Intercalated Block Copolymers[J]. Chem. J. Chinese Universities, 2000, 21(5): 801.

References

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