Citation
Nurul Hayati Y., . and Kawahara S., . and Mazam M. S., . Modification of deproteinised natural rubber by graft-copolymerisation of methyl methacrylate. pp. 97-100. ISSN 1511-1768
Abstract
Natural Rubber (NR) latex was deproteinised by incubation with urea in the presence of sodium dodecyl sulfate (SDS). Urea deproteinised natural rubber (U-DPNR) latex was graft-copolymerised with Methyl Methacrylate (MMA) at a monomer feed of 5 10 15 and 20 wt on rubber. The monomer content monomer conversion and grafting efficiency of the copolymerisation reaction were determined. The resulting graft copolymers were characterised by FT-IR spectroscopy and morphology observed using a transmission electron microscope (TEM). The monomer content conversion and grafting efficiency of NR-graft-PMMA U-DPNR-graft-PMMA and E-DPNR-graft-PMMA were compared as well. The results showed that MMA feed of 15 wt on rubber initiator concentration of 6.6 10 5 mol/g-rubber and reaction temperature at 30C were found to be suitable conditions to obtain high MMA content high conversion and high grafting efficiency. The highest grafting efficiency was about 80 at 15 wt on rubber feed of MMA for U-DPNR-graft-PMMA and E-DPNR-graft-PMMA.
Download File
Full text available from:
Official URL: http://vitaldoc.lgm.gov.my:8060/vital/access/servi...
|
Abstract
Natural Rubber (NR) latex was deproteinised by incubation with urea in the presence of sodium dodecyl sulfate (SDS). Urea deproteinised natural rubber (U-DPNR) latex was graft-copolymerised with Methyl Methacrylate (MMA) at a monomer feed of 5 10 15 and 20 wt on rubber. The monomer content monomer conversion and grafting efficiency of the copolymerisation reaction were determined. The resulting graft copolymers were characterised by FT-IR spectroscopy and morphology observed using a transmission electron microscope (TEM). The monomer content conversion and grafting efficiency of NR-graft-PMMA U-DPNR-graft-PMMA and E-DPNR-graft-PMMA were compared as well. The results showed that MMA feed of 15 wt on rubber initiator concentration of 6.6 10 5 mol/g-rubber and reaction temperature at 30C were found to be suitable conditions to obtain high MMA content high conversion and high grafting efficiency. The highest grafting efficiency was about 80 at 15 wt on rubber feed of MMA for U-DPNR-graft-PMMA and E-DPNR-graft-PMMA.
Additional Metadata
Item Type: | Article |
---|---|
AGROVOC Term: | Natural rubber |
AGROVOC Term: | Urea |
AGROVOC Term: | Methylation |
AGROVOC Term: | Polymers |
AGROVOC Term: | Latex |
AGROVOC Term: | grafting |
AGROVOC Term: | Polymerization |
Depositing User: | Ms. Suzila Mohamad Kasim |
Last Modified: | 24 Apr 2025 06:28 |
URI: | http://webagris.upm.edu.my/id/eprint/23064 |
Actions (login required)
![]() |
View Item |