Optimized conditions for the grafting reaction of poly(methyl methacrylate) onto oil-palm empty fruit bunch fibers
This article describes the graft copolymerization of poly(methyl methacrylate) (PMMA) onto oil-palm empty fruit bunches (OPEFBS) with a fiber length of less than 75 mu m. The graft copolymerization was carried out under a nitrogen atmosphere by a free-radical initiation technique in an aqueous mediu...
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John Wiley & Sons Inc
2008
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| _version_ | 1796855123243171840 |
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| author | Abu Bakar, Aznizam Nik Mat, Nik Sulaiman Isnin, Mohd. Kamaruddin |
| author_facet | Abu Bakar, Aznizam Nik Mat, Nik Sulaiman Isnin, Mohd. Kamaruddin |
| author_sort | Abu Bakar, Aznizam |
| collection | ePrints |
| description | This article describes the graft copolymerization of poly(methyl methacrylate) (PMMA) onto oil-palm empty fruit bunches (OPEFBS) with a fiber length of less than 75 mu m. The graft copolymerization was carried out under a nitrogen atmosphere by a free-radical initiation technique in an aqueous medium. Hydrogen peroxide and ferrous ions were used as a redox initiator/ cocatalyst system. The PMMA homopolymer that formed during the reaction was removed from the grafted copolymers by Soxhlet extraction. Determining the effects of the reaction period, reaction temperature, and monomer concentration on the grafting percentage was the main objective, and they were investigated systematically. The optimum reaction period, reaction temperature, monomer concentration, and initiator concentration were 60 min, 50 C, 47.15 x 10(3) mol, and 3.92 x 10(3) mol, respectively. The maximum percentage of grafting achieved under therse optimum conditions was 173%. The presence of PMMA functional groups on OPEFB and the enormous reducion of the hydroxyl-group absorption band in PMMA-g-OPEFB spectra provided evidence of the successful grafting reaction. The improvement of the thermal stability of PMMA-g-OPEFB also showed the optimal achievement of the grafting reaction of PMMA onto OPEFB. |
| first_indexed | 2024-03-05T18:24:01Z |
| format | Article |
| id | utm.eprints-12707 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:24:01Z |
| publishDate | 2008 |
| publisher | John Wiley & Sons Inc |
| record_format | dspace |
| spelling | utm.eprints-127072017-10-25T04:47:51Z http://eprints.utm.my/12707/ Optimized conditions for the grafting reaction of poly(methyl methacrylate) onto oil-palm empty fruit bunch fibers Abu Bakar, Aznizam Nik Mat, Nik Sulaiman Isnin, Mohd. Kamaruddin QD Chemistry This article describes the graft copolymerization of poly(methyl methacrylate) (PMMA) onto oil-palm empty fruit bunches (OPEFBS) with a fiber length of less than 75 mu m. The graft copolymerization was carried out under a nitrogen atmosphere by a free-radical initiation technique in an aqueous medium. Hydrogen peroxide and ferrous ions were used as a redox initiator/ cocatalyst system. The PMMA homopolymer that formed during the reaction was removed from the grafted copolymers by Soxhlet extraction. Determining the effects of the reaction period, reaction temperature, and monomer concentration on the grafting percentage was the main objective, and they were investigated systematically. The optimum reaction period, reaction temperature, monomer concentration, and initiator concentration were 60 min, 50 C, 47.15 x 10(3) mol, and 3.92 x 10(3) mol, respectively. The maximum percentage of grafting achieved under therse optimum conditions was 173%. The presence of PMMA functional groups on OPEFB and the enormous reducion of the hydroxyl-group absorption band in PMMA-g-OPEFB spectra provided evidence of the successful grafting reaction. The improvement of the thermal stability of PMMA-g-OPEFB also showed the optimal achievement of the grafting reaction of PMMA onto OPEFB. John Wiley & Sons Inc 2008-10-15 Article PeerReviewed Abu Bakar, Aznizam and Nik Mat, Nik Sulaiman and Isnin, Mohd. Kamaruddin (2008) Optimized conditions for the grafting reaction of poly(methyl methacrylate) onto oil-palm empty fruit bunch fibers. Journal Of Applied Polymer Science , 110 (2). 847 -855. ISSN 0021-8995 http://dx.doi.org/10.1002/app.28540 doi:10.1002/app.28540 |
| spellingShingle | QD Chemistry Abu Bakar, Aznizam Nik Mat, Nik Sulaiman Isnin, Mohd. Kamaruddin Optimized conditions for the grafting reaction of poly(methyl methacrylate) onto oil-palm empty fruit bunch fibers |
| title | Optimized conditions for the grafting reaction of poly(methyl methacrylate) onto oil-palm empty fruit bunch fibers |
| title_full | Optimized conditions for the grafting reaction of poly(methyl methacrylate) onto oil-palm empty fruit bunch fibers |
| title_fullStr | Optimized conditions for the grafting reaction of poly(methyl methacrylate) onto oil-palm empty fruit bunch fibers |
| title_full_unstemmed | Optimized conditions for the grafting reaction of poly(methyl methacrylate) onto oil-palm empty fruit bunch fibers |
| title_short | Optimized conditions for the grafting reaction of poly(methyl methacrylate) onto oil-palm empty fruit bunch fibers |
| title_sort | optimized conditions for the grafting reaction of poly methyl methacrylate onto oil palm empty fruit bunch fibers |
| topic | QD Chemistry |
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