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Insight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopy

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Main Authors: Omar S., Dahham, Rosniza, Hamzah, Mohamad, Abu Bakar, Nik Noriman, Zulkepli, Abdulkader M., Alakrach, Sam, Sung Ting, Mohd Firdaus, Omar, Tijjani, Adam, Al-rashdi, Awad A.
Other Authors: rosnizahamzah@unimap.edu.my
Format: Article
Language:English
Published: Elsevier 2020
Subjects:
Organic/inorganic hybrid
Epoxidized natural rubber
Titania
NMR
Thermal properties
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/68730
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spelling my.unimap-687302020-11-16T04:31:02Z Insight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopy Omar S., Dahham Rosniza, Hamzah Mohamad, Abu Bakar Nik Noriman, Zulkepli Abdulkader M., Alakrach Sam, Sung Ting Mohd Firdaus, Omar Tijjani, Adam Al-rashdi, Awad A. rosnizahamzah@unimap.edu.my Organic/inorganic hybrid Epoxidized natural rubber Titania NMR Thermal properties Link to publisher's homepage at https://elsevier.com/ 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. 2020-11-16T04:31:02Z 2020-11-16T04:31:02Z 2020 Article Arabian Journal of Chemistry, vol.13(1), 2020, pages 2400-2413 1878-5352 (print) http://dspace.unimap.edu.my:80/xmlui/handle/123456789/68730 https://doi.org/10.1016/j.arabjc.2018.05.003 en Elsevier
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Organic/inorganic hybrid
Epoxidized natural rubber
Titania
NMR
Thermal properties
spellingShingle Organic/inorganic hybrid
Epoxidized natural rubber
Titania
NMR
Thermal properties
Omar S., Dahham
Rosniza, Hamzah
Mohamad, Abu Bakar
Nik Noriman, Zulkepli
Abdulkader M., Alakrach
Sam, Sung Ting
Mohd Firdaus, Omar
Tijjani, Adam
Al-rashdi, Awad A.
Insight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopy
description Link to publisher's homepage at https://elsevier.com/
author2 rosnizahamzah@unimap.edu.my
author_facet rosnizahamzah@unimap.edu.my
Omar S., Dahham
Rosniza, Hamzah
Mohamad, Abu Bakar
Nik Noriman, Zulkepli
Abdulkader M., Alakrach
Sam, Sung Ting
Mohd Firdaus, Omar
Tijjani, Adam
Al-rashdi, Awad A.
format Article
author Omar S., Dahham
Rosniza, Hamzah
Mohamad, Abu Bakar
Nik Noriman, Zulkepli
Abdulkader M., Alakrach
Sam, Sung Ting
Mohd Firdaus, Omar
Tijjani, Adam
Al-rashdi, Awad A.
author_sort Omar S., Dahham
title Insight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopy
title_short Insight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopy
title_full Insight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopy
title_fullStr Insight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopy
title_full_unstemmed Insight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopy
title_sort insight on the structural aspect of enr-50/tio2 hybrid in koh/c3h8o medium revealed by nmr spectroscopy
publisher Elsevier
publishDate 2020
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/68730
_version_ 1698698502596460544
score 13.222552

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