Ramli, Junid and Siregar, J. P. and Nor Azam, Endot and Jeefferie, Abd Razak and Wilkinson, Arthur N. (2021) Optimization of glass transition temperature and pot life of epoxy blends using response surface methodology (RSM). Polymers, 13 (19). pp. 1-18. ISSN 2073-4360. (Published)
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Abstract
The aim of this work was to improve the processability of triglycidyl-p-aminophenol (TGPAP) epoxy resin. To achieve this improvement, a diluent, the diglycidyl ether of bisphenol F (DGEBF or BPF), was added to TGPAP, and the blended epoxy was then cured with 4, 4′-diaminodiphenyl sulfones (DDS). A response surface methodology (RSM) was used, with the target response being to achieve a blended resin with a high glass transition temperature (Tg) and maximum pot life (or processing window, PW). Characterization through dynamic mechanical thermal analysis (DMTA) and using a rheometer indicated that the optimum formulation was obtained at 55.6 wt.% of BPF and a stoichiometric ratio of 0.60. Both values were predicted to give Tg at 180 °C and a processing window of up to 136.1 min. The predicted values were verified, with the obtained Tg and processing window (PW) being 181.2 ± 0.8 °C and 140 min, respectively, which is close to the values predicted using the RSM.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Epoxy blends; Response surface methodology; Polymer; Crosslinking; Pot life; Glass transition temperature; Central composite design; Optimization |
| Subjects: | T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery |
| Faculty/Division: | College of Engineering |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 09 Nov 2021 07:32 |
| Last Modified: | 09 Nov 2021 07:32 |
| URI: | http://umpir.ump.edu.my/id/eprint/32540 |
| Download Statistic: | View Download Statistics |
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