Synthesis of hydrophilic copolyesters and the characterization of their moisture-related cooling properties
Autor: | Choong Hee Hong, Chan Sol Kang, Doo Hyun Baik, Hyun Sun Kim, Sun Jin Kwon, Ho Jin Yoon |
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Rok vydání: | 2015 |
Předmět: |
Thermogravimetric analysis
Materials science Absorption of water Polymers and Plastics Moisture General Chemical Engineering technology industry and agriculture 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Contact angle chemistry.chemical_compound Differential scanning calorimetry chemistry PEG ratio Polymer chemistry 0210 nano-technology Spectroscopy Ethylene glycol Nuclear chemistry |
Zdroj: | Fibers and Polymers. 16:2513-2518 |
ISSN: | 1875-0052 1229-9197 |
Popis: | A series of copolyesters (Co-PETs) containing poly(ethylene glycol) (PEG), 5-sodiumsulfodimethyl isophthalate (DMS), and dimethyl isophthalate (DMI) were synthesized via the conventional two-step melt-polycondensation method. The synthesized Co-PETs were characterized by 1H-NMR spectroscopy, FT-IR spectroscopy, differential scanning calorimeter (DSC), and thermogravimetric analyzer (TGA). The DSC results showed that the melting temperature (T m) and the heats of fusion (ΔH m) of Co-PETs decreased with increasing the DMS content in Co-PET, while the inclusion of PEG did not affect their thermal properties significantly. The water absorption and the water contact angle of the Co-PET films were found to be significantly affected by the DMS content rather than PEG content. The moisture-related cooling properties of the fabric samples made of Co-PET 5 as well as PET were evaluated by using liquid moisture management tester (MMT) and Q max measurements. The MMT and Q max results indicated that Co-PET 5 fabric containing DMS 1.0 mol% and PEG 10.0 wt% in Co-PET seemed to be a good candidate for the fabric having durable cooling effects. |
Databáze: | OpenAIRE |
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