In situ hydrogenation of liquid epoxidized natural rubber using diimide

Nur Hanis Adila Azhar, Hamizah Md Rasid, Nur Aidasyakirah Mohd Tahir, Siti Fairus Mohd Yusoff

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A low-molecular-weight liquid epoxidized natural rubber (LENR) was prepared through photosensitized degradation of epoxidized natural rubber with 50 mol percent of epoxy content (ENR-50). LENR was modified into hydrogenated liquid epoxidized natural rubber (HLENR) via in situ thermal degradation of arylsulfonyl hydrazide as a hydrogenating agent. The chemical structures of LENR and HLENR were characterized using Fourier transform infrared (FTIR) and 1H nuclear magnetic resonance (NMR) spectroscopies. The thermal behaviour of LENR and HLENR were analysed using thermogravimetric analysis (TGA). The molecular weight and polydispersity index (PDI) of LENR and HLENR were determined using gel permeation chromatography (GPC). The parameter studies on the hydrogenation of LENR were investigated based on the source of diimide, weight ratios of LENR: p-toluenesulfonyl hydrazide (TSH), temperature, reaction time and solvent of the reaction. The highest conversion of hydrogenation was achieved at 130 °C for 4 hours reaction time, with 1:1 weight ratio of LENR: TSH using o-xylene as a solvent.

Translated title of the contributionIn situ hydrogenation of liquid epoxidized natural rubber using diimide
Original languageMalay
Pages (from-to)1380-1388
Number of pages9
JournalMalaysian Journal of Analytical Sciences
Volume21
Issue number6
DOIs
Publication statusPublished - 1 Dec 2017

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Rubber
Hydrogenation
Liquids
Molecular weight
Gel permeation chromatography
Polydispersity
Nuclear magnetic resonance spectroscopy
Thermogravimetric analysis
Fourier transforms
Pyrolysis

Keywords

    ASJC Scopus subject areas

    • Analytical Chemistry

    Cite this

    Penghidrogenan in situ getah asli cecair terepoksida menggunakan diimida. / Azhar, Nur Hanis Adila; Rasid, Hamizah Md; Tahir, Nur Aidasyakirah Mohd; Mohd Yusoff, Siti Fairus.

    In: Malaysian Journal of Analytical Sciences, Vol. 21, No. 6, 01.12.2017, p. 1380-1388.

    Research output: Contribution to journalArticle

    Azhar, Nur Hanis Adila ; Rasid, Hamizah Md ; Tahir, Nur Aidasyakirah Mohd ; Mohd Yusoff, Siti Fairus. / Penghidrogenan in situ getah asli cecair terepoksida menggunakan diimida. In: Malaysian Journal of Analytical Sciences. 2017 ; Vol. 21, No. 6. pp. 1380-1388.
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    abstract = "A low-molecular-weight liquid epoxidized natural rubber (LENR) was prepared through photosensitized degradation of epoxidized natural rubber with 50 mol percent of epoxy content (ENR-50). LENR was modified into hydrogenated liquid epoxidized natural rubber (HLENR) via in situ thermal degradation of arylsulfonyl hydrazide as a hydrogenating agent. The chemical structures of LENR and HLENR were characterized using Fourier transform infrared (FTIR) and 1H nuclear magnetic resonance (NMR) spectroscopies. The thermal behaviour of LENR and HLENR were analysed using thermogravimetric analysis (TGA). The molecular weight and polydispersity index (PDI) of LENR and HLENR were determined using gel permeation chromatography (GPC). The parameter studies on the hydrogenation of LENR were investigated based on the source of diimide, weight ratios of LENR: p-toluenesulfonyl hydrazide (TSH), temperature, reaction time and solvent of the reaction. The highest conversion of hydrogenation was achieved at 130 °C for 4 hours reaction time, with 1:1 weight ratio of LENR: TSH using o-xylene as a solvent.",
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