Characterization for pyrolysis of thermoplastic polyurethane by thermal analyses
| Autor: | Taek Sung Hwang, Yun Kyu Yang, Suk Hwan Kang, Jung Hun Lim, Noh Seok Kwak, Dong Cheol Ku |
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| Rok vydání: | 2005 |
| Předmět: |
Thermogravimetric analysis
Order of reaction Materials science Polymers and Plastics General Chemical Engineering Organic Chemistry Dibutyltin dilaurate chemistry.chemical_compound Thermoplastic polyurethane Differential scanning calorimetry chemistry Chemical engineering Polycaprolactone Polymer chemistry Materials Chemistry Glass transition Polyurethane |
| Zdroj: | Macromolecular Research. 13:212-217 |
| ISSN: | 2092-7673 1598-5032 |
| DOI: | 10.1007/bf03219054 |
| Popis: | The pyrolysis kinetics of polyurethanes synthesized from polycaprolactone diol (PCL) and diisocyanate (HDI, H12MDI) using catalysts such as dibutyltin dilaurate (DBTDL) were studied by a thermogravimetric (TG) technique, which involved heating the sample at the rates of 10, 20 and 30 °C/min. The effect of the kind of diisocyanate and the hard segment contents on the activation energy and reaction order were examined at conversions ranging from 1 to 100%. The activation energies at first increased slowly with increasing conversion. Also, differential scanning calorimetry (DSC) was used to investigate the structural differences in each polyurethane. DSC can reveal the melting behavior, in terms of the glass transition temperature (T g ), which is known to vary as a function of the stoichiometry and processing conditions. |
| Databáze: | OpenAIRE |
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