Microwave-assisted synthesis and swelling behavior of poly lactic acid (PLA) grafted Cordia dichotoma gum-based hydrogels
GBHs, or gum-based hydrogels, or superabsorbents, are derived from natural gums. In their unmodified form, these natural polysaccharides may be limited in their application due to physical matrix erosion caused by intensive swelling. Therefore, tailoring their structure to achieve desired swelling p...
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2025-06-01
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| author | Jyoti Sinha Abubakar Hamisu Mijinyawa Faisal Islam Chowdhury Muhd Zu Azhan Yahya Pramod Kumar Singh Geeta Durga |
| author_facet | Jyoti Sinha Abubakar Hamisu Mijinyawa Faisal Islam Chowdhury Muhd Zu Azhan Yahya Pramod Kumar Singh Geeta Durga |
| author_sort | Jyoti Sinha |
| collection | DOAJ |
| description | GBHs, or gum-based hydrogels, or superabsorbents, are derived from natural gums. In their unmodified form, these natural polysaccharides may be limited in their application due to physical matrix erosion caused by intensive swelling. Therefore, tailoring their structure to achieve desired swelling properties is crucial. In this study, a biodegradable gum (CDG) was extracted from Cordia dichotoma fruits using ethanol, and its corresponding grafted copolymer aka CDG-g-PLA was synthesized for the first time by graft copolymerization of poly (lactic acid) (PLA) onto the backbone of CDG by exposure to microwave irradiation. The synthesized CDG-g-PLA copolymer was characterized by FTIR, SEM, XRD, TGA, DSC, and DLS measurements to study its physico-chemical properties. The FTIR analysis proved the grafting of PLA at the –OH group on the backbone of CDG biopolymer which was supported by all other characterizations. The XRD patterns showed a broad peak at 2θ = 26.4 for CDG-g-PLA confirming its amorphous nature. DLS measurements exhibited that particles in the CDG and CDG-g-PLA copolymer formed a coarse suspension in water with particle sizes > 1 µm. The negative value of zeta potential results confirmed the hydrogels to be anionic. The swelling of CDG-g-PLA in water was measured and found to be significantly lower than CDG, making them novel candidates for drug-delivery and sustainable food packaging applications. |
| format | Article |
| id | doaj-art-2e8d24bfed484281a817ff6261636d5a |
| institution | Kabale University |
| issn | 2667-0224 |
| language | English |
| publishDate | 2025-06-01 |
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| series | Chemical Physics Impact |
| spelling | doaj-art-2e8d24bfed484281a817ff6261636d5a2025-01-18T05:05:27ZengElsevierChemical Physics Impact2667-02242025-06-0110100825Microwave-assisted synthesis and swelling behavior of poly lactic acid (PLA) grafted Cordia dichotoma gum-based hydrogelsJyoti Sinha0Abubakar Hamisu Mijinyawa1Faisal Islam Chowdhury2Muhd Zu Azhan Yahya3Pramod Kumar Singh4Geeta Durga5Department of Chemistry and Biochemistry, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida, 201310, Uttar Pradesh, IndiaDepartment of Chemistry and Biochemistry, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida, 201310, Uttar Pradesh, India; Department of Chemical Sciences, Faculty of Science & Computing, Capital City University, Kano, NigeriaDepartment of Chemistry, University of Chittagong, Chattogram, BangladeshFaculty of Defence Science and Technology, Universiti Pertahanan Nasional Malaysia (UPNM), 57000, Kuala Lumpur, MalaysiaCentre for Solar Cell and Renewable Energy, Department of Physics, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida, Uttar Pradesh, 201310, IndiaDepartment of Chemistry and Biochemistry, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida, 201310, Uttar Pradesh, India; Corresponding author: Department of Chemistry and Biochemistry, School of Basic Sciences and Research, Sharda University, Greater Noida, 201306, Uttar Pradesh, India.GBHs, or gum-based hydrogels, or superabsorbents, are derived from natural gums. In their unmodified form, these natural polysaccharides may be limited in their application due to physical matrix erosion caused by intensive swelling. Therefore, tailoring their structure to achieve desired swelling properties is crucial. In this study, a biodegradable gum (CDG) was extracted from Cordia dichotoma fruits using ethanol, and its corresponding grafted copolymer aka CDG-g-PLA was synthesized for the first time by graft copolymerization of poly (lactic acid) (PLA) onto the backbone of CDG by exposure to microwave irradiation. The synthesized CDG-g-PLA copolymer was characterized by FTIR, SEM, XRD, TGA, DSC, and DLS measurements to study its physico-chemical properties. The FTIR analysis proved the grafting of PLA at the –OH group on the backbone of CDG biopolymer which was supported by all other characterizations. The XRD patterns showed a broad peak at 2θ = 26.4 for CDG-g-PLA confirming its amorphous nature. DLS measurements exhibited that particles in the CDG and CDG-g-PLA copolymer formed a coarse suspension in water with particle sizes > 1 µm. The negative value of zeta potential results confirmed the hydrogels to be anionic. The swelling of CDG-g-PLA in water was measured and found to be significantly lower than CDG, making them novel candidates for drug-delivery and sustainable food packaging applications.http://www.sciencedirect.com/science/article/pii/S2667022425000131BiopolymersPolysaccharidesCordia dichotoma gum (CDG)Poly (lactic acid) or PLAGraft copolymerizationFTIR |
| spellingShingle | Jyoti Sinha Abubakar Hamisu Mijinyawa Faisal Islam Chowdhury Muhd Zu Azhan Yahya Pramod Kumar Singh Geeta Durga Microwave-assisted synthesis and swelling behavior of poly lactic acid (PLA) grafted Cordia dichotoma gum-based hydrogels Chemical Physics Impact Biopolymers Polysaccharides Cordia dichotoma gum (CDG) Poly (lactic acid) or PLA Graft copolymerization FTIR |
| title | Microwave-assisted synthesis and swelling behavior of poly lactic acid (PLA) grafted Cordia dichotoma gum-based hydrogels |
| title_full | Microwave-assisted synthesis and swelling behavior of poly lactic acid (PLA) grafted Cordia dichotoma gum-based hydrogels |
| title_fullStr | Microwave-assisted synthesis and swelling behavior of poly lactic acid (PLA) grafted Cordia dichotoma gum-based hydrogels |
| title_full_unstemmed | Microwave-assisted synthesis and swelling behavior of poly lactic acid (PLA) grafted Cordia dichotoma gum-based hydrogels |
| title_short | Microwave-assisted synthesis and swelling behavior of poly lactic acid (PLA) grafted Cordia dichotoma gum-based hydrogels |
| title_sort | microwave assisted synthesis and swelling behavior of poly lactic acid pla grafted cordia dichotoma gum based hydrogels |
| topic | Biopolymers Polysaccharides Cordia dichotoma gum (CDG) Poly (lactic acid) or PLA Graft copolymerization FTIR |
| url | http://www.sciencedirect.com/science/article/pii/S2667022425000131 |
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