Nanostructured chitosan-palygorskite hybrid microspheres for controlled delivery of thymol
Hybrid microspheres from palygorskite (PAL) nanoclay and crosslinked chitosan (QS) were prepared with the emulsion method to trap and control the release of thymol (TIM). The morphology of the microspheres was characterized by scanning electron microscopy and x-ray diffraction. The size of the micro...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ac29f6 |
| _version_ | 1797746782386520064 |
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| author | W Ramos-Torres Rocío Borges-Argáez P I Gonzalez-Chi |
| author_facet | W Ramos-Torres Rocío Borges-Argáez P I Gonzalez-Chi |
| author_sort | W Ramos-Torres |
| collection | DOAJ |
| description | Hybrid microspheres from palygorskite (PAL) nanoclay and crosslinked chitosan (QS) were prepared with the emulsion method to trap and control the release of thymol (TIM). The morphology of the microspheres was characterized by scanning electron microscopy and x-ray diffraction. The size of the microspheres, the swelling rate, the encapsulation efficiency and thymol release rate were characterized. Compared to pristine chitosan microspheres, hybrid microspheres showed the highest encapsulation efficiency. The average particle sizes of the QS and QS-PAL microspheres are in a range of 20 to 50 μ m, with a size distribution of the hybrid microspheres showing less size polydispersity. The QS-PAL microspheres have a higher swelling rate than the QS microspheres. The lowest swelling degree, 88%, was from the microspheres without PAL cross-linked with 950 μ l of glutaraldehyde (GL), and the highest swelling degree, 146%, was from the microspheres with 10% PAL crosslinked with 630 μ l of GL. The thymol release kinetics was modified by the palygorskite content of the chitosan hybrid microspheres. |
| first_indexed | 2024-03-12T15:41:46Z |
| format | Article |
| id | doaj.art-08639c9d47274f0b97391b14e29ed2ae |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:41:46Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-08639c9d47274f0b97391b14e29ed2ae2023-08-09T15:55:26ZengIOP PublishingMaterials Research Express2053-15912021-01-0181010501010.1088/2053-1591/ac29f6Nanostructured chitosan-palygorskite hybrid microspheres for controlled delivery of thymolW Ramos-Torres0Rocío Borges-Argáez1P I Gonzalez-Chi2https://orcid.org/0000-0002-5917-078XCentro de Investigación Científica de Yucatán A.C., Unidad de Materiales, Calle 43, No. 130, Col. Chuburná de Hidalgo, Mérida, Yucatán. C.P. 97200, MexicoCentro de Investigación Científica de Yucatán A.C., Unidad de Materiales, Calle 43, No. 130, Col. Chuburná de Hidalgo, Mérida, Yucatán. C.P. 97200, MexicoCentro de Investigación Científica de Yucatán A.C., Unidad de Materiales, Calle 43, No. 130, Col. Chuburná de Hidalgo, Mérida, Yucatán. C.P. 97200, MexicoHybrid microspheres from palygorskite (PAL) nanoclay and crosslinked chitosan (QS) were prepared with the emulsion method to trap and control the release of thymol (TIM). The morphology of the microspheres was characterized by scanning electron microscopy and x-ray diffraction. The size of the microspheres, the swelling rate, the encapsulation efficiency and thymol release rate were characterized. Compared to pristine chitosan microspheres, hybrid microspheres showed the highest encapsulation efficiency. The average particle sizes of the QS and QS-PAL microspheres are in a range of 20 to 50 μ m, with a size distribution of the hybrid microspheres showing less size polydispersity. The QS-PAL microspheres have a higher swelling rate than the QS microspheres. The lowest swelling degree, 88%, was from the microspheres without PAL cross-linked with 950 μ l of glutaraldehyde (GL), and the highest swelling degree, 146%, was from the microspheres with 10% PAL crosslinked with 630 μ l of GL. The thymol release kinetics was modified by the palygorskite content of the chitosan hybrid microspheres.https://doi.org/10.1088/2053-1591/ac29f6hybrid microsphereschitosanpalygorskitethymolcontrolled release |
| spellingShingle | W Ramos-Torres Rocío Borges-Argáez P I Gonzalez-Chi Nanostructured chitosan-palygorskite hybrid microspheres for controlled delivery of thymol Materials Research Express hybrid microspheres chitosan palygorskite thymol controlled release |
| title | Nanostructured chitosan-palygorskite hybrid microspheres for controlled delivery of thymol |
| title_full | Nanostructured chitosan-palygorskite hybrid microspheres for controlled delivery of thymol |
| title_fullStr | Nanostructured chitosan-palygorskite hybrid microspheres for controlled delivery of thymol |
| title_full_unstemmed | Nanostructured chitosan-palygorskite hybrid microspheres for controlled delivery of thymol |
| title_short | Nanostructured chitosan-palygorskite hybrid microspheres for controlled delivery of thymol |
| title_sort | nanostructured chitosan palygorskite hybrid microspheres for controlled delivery of thymol |
| topic | hybrid microspheres chitosan palygorskite thymol controlled release |
| url | https://doi.org/10.1088/2053-1591/ac29f6 |
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