Preparation of carboxymethyl sago pulp hydrogel from sago waste by electron beam irradiation and swelling behavior in water and various pH media.
Solutions of carboxymethyl sago pulp (CMSP) of various degree of substitution were irradiated with electron beam of various radiation doses. The gelation dose (Dg) and po/qo ratio (po is degradation density, qo is crosslinking density) is dependent on CMSP concentration and degree of substitution. I...
| المؤلفون الرئيسيون: | , , , , |
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| التنسيق: | مقال |
| اللغة: | English English |
| منشور في: |
Wiley
2013
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| الوصول للمادة أونلاين: | http://psasir.upm.edu.my/id/eprint/29983/1/Preparation%20of%20carboxymethyl%20sago%20pulp%20hydrogel%20from%20sago%20waste%20by%20electron%20beam%20irradiation%20and%20swelling%20behavior%20in%20water%20and%20various%20pH%20media.pdf |
| _version_ | 1825947617585004544 |
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| author | Pushpamalar, Vengidesh Langford, Steven James Ahmad, Mansor Hashim, Kamaruddin Lim, Yau Yan |
| author_facet | Pushpamalar, Vengidesh Langford, Steven James Ahmad, Mansor Hashim, Kamaruddin Lim, Yau Yan |
| author_sort | Pushpamalar, Vengidesh |
| collection | UPM |
| description | Solutions of carboxymethyl sago pulp (CMSP) of various degree of substitution were irradiated with electron beam of various radiation doses. The gelation dose (Dg) and po/qo ratio (po is degradation density, qo is crosslinking density) is dependent on CMSP concentration and degree of substitution. In the range of concentrations of 10% to 80% (w/v) CMSP with degree of substitutions of 0.4, 0.6, and 0.8, the po/qo ratio decreases with increasing %CMSP showing that crosslinking processes are dominating and increasing the gel network of the CMSP hydrogel. The fourier transform infrared spectra of CMSP hydrogels of degree of substitutions of 0.4, 0.6, and 0.8 with percentage of gel fractions 25, 35, and ≥ 40 show differences in the intensity of the absorption bands at 1020–1100, 1326, and 1422 cm−1 with different degree of substitutions and percentage of gel fraction (%GF) that correspond to different extents of chain scission and crosslinking. The swelling behavior in water shows that CMSP hydrogels could absorb 3500–5300% of water by 1 g of CMSP hydrogel. The ability to absorb water increases with the decrease of degree of substitution and %GF of the CMSP hydrogels. It is also observed that the optimum pH for swelling CMSP hydrogel is at pH 7. |
| first_indexed | 2024-03-06T08:16:08Z |
| format | Article |
| id | upm.eprints-29983 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T08:16:08Z |
| publishDate | 2013 |
| publisher | Wiley |
| record_format | dspace |
| spelling | upm.eprints-299832015-10-28T03:36:34Z http://psasir.upm.edu.my/id/eprint/29983/ Preparation of carboxymethyl sago pulp hydrogel from sago waste by electron beam irradiation and swelling behavior in water and various pH media. Pushpamalar, Vengidesh Langford, Steven James Ahmad, Mansor Hashim, Kamaruddin Lim, Yau Yan Solutions of carboxymethyl sago pulp (CMSP) of various degree of substitution were irradiated with electron beam of various radiation doses. The gelation dose (Dg) and po/qo ratio (po is degradation density, qo is crosslinking density) is dependent on CMSP concentration and degree of substitution. In the range of concentrations of 10% to 80% (w/v) CMSP with degree of substitutions of 0.4, 0.6, and 0.8, the po/qo ratio decreases with increasing %CMSP showing that crosslinking processes are dominating and increasing the gel network of the CMSP hydrogel. The fourier transform infrared spectra of CMSP hydrogels of degree of substitutions of 0.4, 0.6, and 0.8 with percentage of gel fractions 25, 35, and ≥ 40 show differences in the intensity of the absorption bands at 1020–1100, 1326, and 1422 cm−1 with different degree of substitutions and percentage of gel fraction (%GF) that correspond to different extents of chain scission and crosslinking. The swelling behavior in water shows that CMSP hydrogels could absorb 3500–5300% of water by 1 g of CMSP hydrogel. The ability to absorb water increases with the decrease of degree of substitution and %GF of the CMSP hydrogels. It is also observed that the optimum pH for swelling CMSP hydrogel is at pH 7. Wiley 2013-04-05 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/29983/1/Preparation%20of%20carboxymethyl%20sago%20pulp%20hydrogel%20from%20sago%20waste%20by%20electron%20beam%20irradiation%20and%20swelling%20behavior%20in%20water%20and%20various%20pH%20media.pdf Pushpamalar, Vengidesh and Langford, Steven James and Ahmad, Mansor and Hashim, Kamaruddin and Lim, Yau Yan (2013) Preparation of carboxymethyl sago pulp hydrogel from sago waste by electron beam irradiation and swelling behavior in water and various pH media. Journal of Applied Polymer Science, 128 (1). pp. 451-459. ISSN 0021-8995; ESSN: 1097-4628 10.1002/app.38192 English |
| spellingShingle | Pushpamalar, Vengidesh Langford, Steven James Ahmad, Mansor Hashim, Kamaruddin Lim, Yau Yan Preparation of carboxymethyl sago pulp hydrogel from sago waste by electron beam irradiation and swelling behavior in water and various pH media. |
| title | Preparation of carboxymethyl sago pulp hydrogel from sago waste by electron beam irradiation and swelling behavior in water and various pH media. |
| title_full | Preparation of carboxymethyl sago pulp hydrogel from sago waste by electron beam irradiation and swelling behavior in water and various pH media. |
| title_fullStr | Preparation of carboxymethyl sago pulp hydrogel from sago waste by electron beam irradiation and swelling behavior in water and various pH media. |
| title_full_unstemmed | Preparation of carboxymethyl sago pulp hydrogel from sago waste by electron beam irradiation and swelling behavior in water and various pH media. |
| title_short | Preparation of carboxymethyl sago pulp hydrogel from sago waste by electron beam irradiation and swelling behavior in water and various pH media. |
| title_sort | preparation of carboxymethyl sago pulp hydrogel from sago waste by electron beam irradiation and swelling behavior in water and various ph media |
| url | http://psasir.upm.edu.my/id/eprint/29983/1/Preparation%20of%20carboxymethyl%20sago%20pulp%20hydrogel%20from%20sago%20waste%20by%20electron%20beam%20irradiation%20and%20swelling%20behavior%20in%20water%20and%20various%20pH%20media.pdf |
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