Synthesis and characterization of copolyester sizing agents |
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Authors: | Doo Hyun Baik Gil Lae Kim |
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Institution: | (1) Department of Textile Engineering, Chungnam National University, 305-764 Taejon, Korea |
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Abstract: | The effect of main chain structure of anion-containing copolyesters on the properties of copolyester sizing agents was investigated.
The copolyesters were prepared by conventional two step polymerization technique from DMT, DMI, DMS, EG, and DEG. The copolyesters
synthesized were characterized by atomic absorption spectroscopy,1H-NMR Spectroscopy, GC, FTIR Spectroscopy, and DSC. The solubility decreased as the DMT content increased. The copolyesters
having DMT:DMI=1:1 showed the minimum viscosity. The effect of EG content on the solution stability was not clear and the
samples having high DMI content showed better solution stability. The water resistance was best when only DMI and EG were
used, while it was worst when DMT:DMI was 1:0. |
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Keywords: | Anion-containing copolyester Sizing agent Solubility Solution stability Water resistance |
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