Preparation And Characterization Of Citric Acid Cross-Linked Carboxymethylcellulose Hydrogel
Hydrogel is a network of water-containing flexible polymer chains physically or chemically cross-linked in three-dimensional form. Citric acid cross-linked carboxymethyl cellulose (CMC) hydrogels have attracted attention for their biodegradability, high mechanical stability, and good water-absorbi...
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| Format: | Monograph |
| Language: | English |
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Universiti Sains Malaysia
2021
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| Online Access: | http://eprints.usm.my/55047/ http://eprints.usm.my/55047/1/Preparation%20And%20Characterization%20Of%20Citric%20Acid%20Cross-Linked%20Carboxymethylcellulose%20Hydrogel_Tan%20Kai%20Qi_K4_2021_ESAR.pdf |
| _version_ | 1848882973165748224 |
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| author | Tan, Kai Qi |
| author_facet | Tan, Kai Qi |
| author_sort | Tan, Kai Qi |
| building | USM Institutional Repository |
| collection | Online Access |
| description | Hydrogel is a network of water-containing flexible polymer chains physically or chemically cross-linked in three-dimensional form. Citric acid cross-linked carboxymethyl cellulose (CMC) hydrogels have attracted attention for their
biodegradability, high mechanical stability, and good water-absorbing ability. In this study, citric acid cross-linked CMC hydrogel was prepared using different preparation methods to enhance its physical and mechanical properties. The citric acid cross-linked CMC hydrogel was prepared by varying the concentration of CMC at 2, 3, and 4 w/v % and varying the concentration of citric acid at 10, 15, and 20 mol/mol %. The stirring condition of hydrogel was varied at room temperature and heating (50 - 55 °C); while the drying condition of hydrogel was varied at fridge-dried (4 °C) and oven-dried
(60 °C). The SEM and BET analysis revealed that the hydrogel is non-porous and water absorption occurred via hydrogen bonding between water and CMC molecules. It is proven that a higher concentration of CMC and citric acid increased the cross-linking density. High cross-linking density significantly decreased the swelling ratio and degradation ratio. The hydrogel composition of 4 w/v % CMC 20 m/m % citric acid
prepared by stirring at a heating condition and oven-dried was the most stable hydrogel with a swelling ratio of 1879.89 % and a low degradation ratio of 12.07 %. |
| first_indexed | 2025-11-15T18:43:25Z |
| format | Monograph |
| id | usm-55047 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T18:43:25Z |
| publishDate | 2021 |
| publisher | Universiti Sains Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-550472022-09-30T09:04:13Z http://eprints.usm.my/55047/ Preparation And Characterization Of Citric Acid Cross-Linked Carboxymethylcellulose Hydrogel Tan, Kai Qi T Technology TP Chemical Technology Hydrogel is a network of water-containing flexible polymer chains physically or chemically cross-linked in three-dimensional form. Citric acid cross-linked carboxymethyl cellulose (CMC) hydrogels have attracted attention for their biodegradability, high mechanical stability, and good water-absorbing ability. In this study, citric acid cross-linked CMC hydrogel was prepared using different preparation methods to enhance its physical and mechanical properties. The citric acid cross-linked CMC hydrogel was prepared by varying the concentration of CMC at 2, 3, and 4 w/v % and varying the concentration of citric acid at 10, 15, and 20 mol/mol %. The stirring condition of hydrogel was varied at room temperature and heating (50 - 55 °C); while the drying condition of hydrogel was varied at fridge-dried (4 °C) and oven-dried (60 °C). The SEM and BET analysis revealed that the hydrogel is non-porous and water absorption occurred via hydrogen bonding between water and CMC molecules. It is proven that a higher concentration of CMC and citric acid increased the cross-linking density. High cross-linking density significantly decreased the swelling ratio and degradation ratio. The hydrogel composition of 4 w/v % CMC 20 m/m % citric acid prepared by stirring at a heating condition and oven-dried was the most stable hydrogel with a swelling ratio of 1879.89 % and a low degradation ratio of 12.07 %. Universiti Sains Malaysia 2021-07-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/55047/1/Preparation%20And%20Characterization%20Of%20Citric%20Acid%20Cross-Linked%20Carboxymethylcellulose%20Hydrogel_Tan%20Kai%20Qi_K4_2021_ESAR.pdf Tan, Kai Qi (2021) Preparation And Characterization Of Citric Acid Cross-Linked Carboxymethylcellulose Hydrogel. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Kimia. (Submitted) |
| spellingShingle | T Technology TP Chemical Technology Tan, Kai Qi Preparation And Characterization Of Citric Acid Cross-Linked Carboxymethylcellulose Hydrogel |
| title | Preparation And Characterization Of Citric Acid Cross-Linked Carboxymethylcellulose Hydrogel |
| title_full | Preparation And Characterization Of Citric Acid Cross-Linked Carboxymethylcellulose Hydrogel |
| title_fullStr | Preparation And Characterization Of Citric Acid Cross-Linked Carboxymethylcellulose Hydrogel |
| title_full_unstemmed | Preparation And Characterization Of Citric Acid Cross-Linked Carboxymethylcellulose Hydrogel |
| title_short | Preparation And Characterization Of Citric Acid Cross-Linked Carboxymethylcellulose Hydrogel |
| title_sort | preparation and characterization of citric acid cross-linked carboxymethylcellulose hydrogel |
| topic | T Technology TP Chemical Technology |
| url | http://eprints.usm.my/55047/ http://eprints.usm.my/55047/1/Preparation%20And%20Characterization%20Of%20Citric%20Acid%20Cross-Linked%20Carboxymethylcellulose%20Hydrogel_Tan%20Kai%20Qi_K4_2021_ESAR.pdf |