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DC Field | Value | Language |
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dc.contributor.author | Omar S., Dahham | - |
dc.contributor.author | Rosniza, Hamzah | - |
dc.contributor.author | Mohamad, Abu Bakar | - |
dc.contributor.author | Nik Noriman, Zulkepli | - |
dc.contributor.author | Abdulkader M., Alakrach | - |
dc.contributor.author | Sam, Sung Ting | - |
dc.contributor.author | Mohd Firdaus, Omar | - |
dc.contributor.author | Tijjani, Adam | - |
dc.contributor.author | Al-rashdi, Awad A. | - |
dc.date.accessioned | 2020-11-16T04:31:02Z | - |
dc.date.available | 2020-11-16T04:31:02Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Arabian Journal of Chemistry, vol.13(1), 2020, pages 2400-2413 | en_US |
dc.identifier.issn | 1878-5352 (print) | - |
dc.identifier.uri | http://dspace.unimap.edu.my:80/xmlui/handle/123456789/68730 | - |
dc.description | Link to publisher's homepage at https://elsevier.com/ | en_US |
dc.description.abstract | The ring-opening reactions (ROR) of epoxide groups in epoxidized natural rubber/titania (ENR-50/TiO2) hybrid in potassium hydroxide/isopropanol medium were examined using NMR spectroscopy and supported by the FTIR technique. The thermal behaviour of the hybrid was also studied using TG/DTG and DSC analyses. The 1H NMR results suggested that 16.82% of ROR occurred in the hybrid, while the 13C NMR results exhibited five new peaks at δ 19.5, 71.0, 73.7, 91.7 and 94.4 ppm in the hybrid. 2D NMR, such as HMQC, HMBC and COSY techniques, further scrutinized these assignments. The FTIR spectrum exhibited Ti-O-C characteristics via the peak at 1028 cm−1. The TG/DTG results showed four steps of thermal degradation at 44–148, 219–309, 331–489 and 629–810 °C due to the existence of Ti moieties along with a polymer chain mixture (intact and ring-opened epoxide groups) of ENR-50, which in turn led to an increase in the Tg value of the hybrid to 27 °C compared to that of purified ENR-50 at −17.72 °C. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.subject | Organic/inorganic hybrid | en_US |
dc.subject | Epoxidized natural rubber | en_US |
dc.subject | Titania | en_US |
dc.subject | NMR | en_US |
dc.subject | Thermal properties | en_US |
dc.title | Insight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopy | en_US |
dc.type | Article | en_US |
dc.identifier.doi | https://doi.org/10.1016/j.arabjc.2018.05.003 | - |
dc.contributor.url | rosnizahamzah@unimap.edu.my | en_US |
Appears in Collections: | Nik Noriman Zulkepli, Assoc. Prof. Ts. Dr. Sam Sung Ting, Assoc. Prof. Ts. Dr. |
Files in This Item:
File | Description | Size | Format | |
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Insight on the structural aspect of ENR-50TiO2 hybrid.pdf | Main article | 3.74 MB | Adobe PDF | View/Open |
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