Synthesis, characterization, and properties of hydrogenated liquid natural rubber

Naharullah Jamaluddin, Muhammad Jefri Mohd Yusof, Ibrahim Abdullah, Siti Fairus Mohd Yusoff

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Liquid natural rubber (LNR) is a low-molecular-weight polymer resulting from degradation of natural rubber (NR) with a similar monomer along the backbone chain. Hydrogenated LNR (HLNR) was synthesized from LNR, in which diimide generated through the thermolysis of p-toluenesulfonyl hydrazide (TSH) served as the source of hydrogen. The products' structure was confirmed on the basis of changes in main peaks featuring carbon-carbon unsaturated bonds in Fourier-transform infrared and nuclear magnetic resonance spectra after hydrogenation. Gel-permeation chromatography showed that HLNR had a lower molecular weight (Mw <104) than LNR (Mw <105) and NR (Mw > 106) because of chain degradation during hydrogenation. The targeted conversion percentage (>90%) was attained by manipulating the reaction parameters. A ratio of 3:1 TSH/LNR was optimum for achieving a high percentage of hydrogenation at 130°C in a 6 h reaction period. Thermogravimetric analysis indicated that the hydrogenation process increased the degradation temperature of LNR. HLNR also can act as a compatibilizer to improve the miscibility of natural rubber/polystyrene blends based from an optical microscope.

Original languageEnglish
Pages (from-to)227-239
Number of pages13
JournalRubber Chemistry and Technology
Volume89
Issue number2
DOIs
Publication statusPublished - 1 Jun 2016

Fingerprint

Rubber
Liquids
Hydrogenation
Degradation
Carbon
Molecular weight
Thermolysis
Compatibilizers
Polystyrenes
Gel permeation chromatography
Thermogravimetric analysis
Hydrogen
Fourier transforms
Polymers
Microscopes
Solubility
Monomers
Nuclear magnetic resonance
Infrared radiation

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Synthesis, characterization, and properties of hydrogenated liquid natural rubber. / Jamaluddin, Naharullah; Yusof, Muhammad Jefri Mohd; Abdullah, Ibrahim; Mohd Yusoff, Siti Fairus.

In: Rubber Chemistry and Technology, Vol. 89, No. 2, 01.06.2016, p. 227-239.

Research output: Contribution to journalArticle

Jamaluddin, Naharullah ; Yusof, Muhammad Jefri Mohd ; Abdullah, Ibrahim ; Mohd Yusoff, Siti Fairus. / Synthesis, characterization, and properties of hydrogenated liquid natural rubber. In: Rubber Chemistry and Technology. 2016 ; Vol. 89, No. 2. pp. 227-239.
@article{e7e1a43d423842b298db1fc74bee5b45,
title = "Synthesis, characterization, and properties of hydrogenated liquid natural rubber",
abstract = "Liquid natural rubber (LNR) is a low-molecular-weight polymer resulting from degradation of natural rubber (NR) with a similar monomer along the backbone chain. Hydrogenated LNR (HLNR) was synthesized from LNR, in which diimide generated through the thermolysis of p-toluenesulfonyl hydrazide (TSH) served as the source of hydrogen. The products' structure was confirmed on the basis of changes in main peaks featuring carbon-carbon unsaturated bonds in Fourier-transform infrared and nuclear magnetic resonance spectra after hydrogenation. Gel-permeation chromatography showed that HLNR had a lower molecular weight (Mw <104) than LNR (Mw <105) and NR (Mw > 106) because of chain degradation during hydrogenation. The targeted conversion percentage (>90{\%}) was attained by manipulating the reaction parameters. A ratio of 3:1 TSH/LNR was optimum for achieving a high percentage of hydrogenation at 130°C in a 6 h reaction period. Thermogravimetric analysis indicated that the hydrogenation process increased the degradation temperature of LNR. HLNR also can act as a compatibilizer to improve the miscibility of natural rubber/polystyrene blends based from an optical microscope.",
author = "Naharullah Jamaluddin and Yusof, {Muhammad Jefri Mohd} and Ibrahim Abdullah and {Mohd Yusoff}, {Siti Fairus}",
year = "2016",
month = "6",
day = "1",
doi = "10.5254/rct.15.84869",
language = "English",
volume = "89",
pages = "227--239",
journal = "Rubber Chemistry and Technology",
issn = "0035-9475",
publisher = "Rubber Division of the American Chemical Society",
number = "2",

}

TY - JOUR

T1 - Synthesis, characterization, and properties of hydrogenated liquid natural rubber

AU - Jamaluddin, Naharullah

AU - Yusof, Muhammad Jefri Mohd

AU - Abdullah, Ibrahim

AU - Mohd Yusoff, Siti Fairus

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Liquid natural rubber (LNR) is a low-molecular-weight polymer resulting from degradation of natural rubber (NR) with a similar monomer along the backbone chain. Hydrogenated LNR (HLNR) was synthesized from LNR, in which diimide generated through the thermolysis of p-toluenesulfonyl hydrazide (TSH) served as the source of hydrogen. The products' structure was confirmed on the basis of changes in main peaks featuring carbon-carbon unsaturated bonds in Fourier-transform infrared and nuclear magnetic resonance spectra after hydrogenation. Gel-permeation chromatography showed that HLNR had a lower molecular weight (Mw <104) than LNR (Mw <105) and NR (Mw > 106) because of chain degradation during hydrogenation. The targeted conversion percentage (>90%) was attained by manipulating the reaction parameters. A ratio of 3:1 TSH/LNR was optimum for achieving a high percentage of hydrogenation at 130°C in a 6 h reaction period. Thermogravimetric analysis indicated that the hydrogenation process increased the degradation temperature of LNR. HLNR also can act as a compatibilizer to improve the miscibility of natural rubber/polystyrene blends based from an optical microscope.

AB - Liquid natural rubber (LNR) is a low-molecular-weight polymer resulting from degradation of natural rubber (NR) with a similar monomer along the backbone chain. Hydrogenated LNR (HLNR) was synthesized from LNR, in which diimide generated through the thermolysis of p-toluenesulfonyl hydrazide (TSH) served as the source of hydrogen. The products' structure was confirmed on the basis of changes in main peaks featuring carbon-carbon unsaturated bonds in Fourier-transform infrared and nuclear magnetic resonance spectra after hydrogenation. Gel-permeation chromatography showed that HLNR had a lower molecular weight (Mw <104) than LNR (Mw <105) and NR (Mw > 106) because of chain degradation during hydrogenation. The targeted conversion percentage (>90%) was attained by manipulating the reaction parameters. A ratio of 3:1 TSH/LNR was optimum for achieving a high percentage of hydrogenation at 130°C in a 6 h reaction period. Thermogravimetric analysis indicated that the hydrogenation process increased the degradation temperature of LNR. HLNR also can act as a compatibilizer to improve the miscibility of natural rubber/polystyrene blends based from an optical microscope.

UR - http://www.scopus.com/inward/record.url?scp=84974670892&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84974670892&partnerID=8YFLogxK

U2 - 10.5254/rct.15.84869

DO - 10.5254/rct.15.84869

M3 - Article

AN - SCOPUS:84974670892

VL - 89

SP - 227

EP - 239

JO - Rubber Chemistry and Technology

JF - Rubber Chemistry and Technology

SN - 0035-9475

IS - 2

ER -