SYNTHESIS OF POLYURETHANE MODIFIED EPOXY FROM ACRYLIC POLYOL WITH TEMPERATURE VARIATION AND POLYURETHANE COMPOSITION
| Main Authors: | Triwulandari, Evi; Research Center for Chemistry - Indonesian Institute of Science Kawasan Puspiptek, Serpong 15314, Tangerang Selatan, Ghozali, Muhammad; Research Center for Chemistry - Indonesian Institute of Science Kawasan Puspiptek, Serpong 15314, Tangerang Selatan |
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| Other Authors: | LIPI |
| Format: | Article application/pdf eJournal |
| Bahasa: | ind |
| Terbitan: |
BATAN
, 2013
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| Online Access: |
http://jurnal.batan.go.id/index.php/jsmi/article/view/830 |
Daftar Isi:
- Polyurethane-modified epoxy has been synthesized using acrylic polyol and tolonate as polyurethane component. Epoxy modification process was conducted at 50o, 70o and 90 oC; 10 %, 20 %, 30 %, 40 % (%w/w) polyurethane to epoxy; with solvent and without solvent as well. Characterization of polyurethane-modified epoxy has been done by determining rest of isocyanate to calculate isocyanate conversion level, Fourier Transform- Infra Red (FT-IR) analysis and 1H-Nuclear Magnetic Resonance (1H-NMR). Based on the result, the highest conversion (97.91%) was obtained when reaction process was done at 50oC and using solvent. FT-IR analysis showed presence of new absorbance in 1722 cm-1 wave area which is absorbance of C=O group of urethane bond (-NH-(C=O)-O-) as result of isocyanate (N=C=O) reaction with hydroxyl group (-OH) of epoxy and polyol. Besides, based on FT-IR spectrum, it has been identified presence of absorbance intensity in 2270 cm-1 which is isocyanate group. While, 1H-NMR analysis showed that there is new signal in δ=4,8827 ppm regional shift of -C-H sp3 bond which is bound to –O- atom of urethane bond (-CH-O-(C=O)NH-).Keywords: Epoxy , Polyurethane, Polyurethane modified epoxy.