JOURNAL OF TEXTILE RESEARCH ›› 2011, Vol. 32 ›› Issue (5): 1-4.

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Synthesis of Poly(trimethylene terephthalate) With Low-melting Point

CUI Lian-Chen CUI,JIANG Chang-Ming JIANG,lV Wang-Yang lV,WANG Xiu-Hua WANG,HUANG Zhi-Chao HUANG   

  • Received:2010-05-04 Revised:2010-09-27 Online:2011-05-15 Published:2011-05-15

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Abstract: Isophthalic acid (IPA) was used to modify poly(trimethylene terephthalate) to obtain a series of poly(trimethylene terephthalate-co-trimethylene isophthalate) (PTTI). The effects of different molar ratios of IPA to TPA on the melting temperature (Tm) of poly(trimethylene terephthalate-co-trimethylene isophthalate) (PTTI) were investigated by Differential Scanning Calorimetry (DSC). The experimental results indicated that the crystallinity and the melting temperature obviously decreased with the molar ratio of IPA to TPA increasing. In order to improve the crystallinity, PEG were imported at the polycondensation stage to obtain PTTI-PEG, characterized by Differential Scanning Calorimetry (DSC), 1H Nuclear Magnetic Resonance (1H-NMR), Thermogravimetric Analysis (TG) and Wide Angle X-ray Diffraction (WAXD).

Key words: Low-melting poing, PTTI-PEG, Copolyester, Characterization

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