Structure · dataset · 2019
Study of Cellulose Nanocrystals and Zinc Nitrate Hexahydrate Addition in Chitosan Hydrogels
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In this study, chitosan hydrogels were produced with 0, 2, 4 and 6 wt% of cellulose nanocrystals (CNC) using hexahydrate zinc nitrate (Zn(NO3)2.6H2O) as a catalyst for chitosan crosslinking reaction.
Description
CNC´s size was estimated by dynamic light scattering (DLS) and surface charge by zeta potential. Hydrogels were characterized by rotational rheometer, swelling test, uniaxial compression test, in vitro degradation, scanning electron microscopy (SEM) and microtomography.
Results showed that zinc nitrate and CNC addition did not influence mechanical properties, degradation, and morphology of the hydrogels. However, zinc nitrate decreased 36.54% of the gel time and 41.37% of the swelling degree, and increased the crosslinking degree of the chitosan hydrogels, proving not only its catalytic effect but also its participation in the crosslinking reaction. Porosity was slightly reduced after addition of zinc nitrate and incorporation of CNC.
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In the mechanism of crosslinking reaction, a competition between CNC and zinc nitrate was observed.
Links
Where it is published
- Repository landing page scielo.figshare.com/articles/Study_of_Cellulose_Nanocrystals_and_Zinc_Nitrate_Hexa… ↗
landing page · from DataCite
- DOI doi.org/10.6084/m9.figshare.8091512.v1 ↗
DOI / persistent id · from DataCite
Documentation and papers
- Creative Commons Attribution 4.0 International creativecommons.org/licenses/by/4.0/legalcode ↗
license · from DataCite
- IsSupplementTo 10.1590/1980-5373-mr-2018-0760 doi.org/10.1590/1980-5373-mr-2018-0760 ↗
publication · from DataCite
Catalogue records · 2
- DataCite API api.datacite.org/dois/10.6084/m9.figshare.8091512.v1 ↗
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- DataCite Commons commons.datacite.org/doi.org/10.6084/m9.figshare.8091512.v1 ↗
catalogue entry · from DataCite
Topics
- Stated by source
- Chemical engineering · Materials engineering
- Inferred from text
- Inorganic chemistry 69% · Microscopy 75%
Related
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| DataCite | 10.6084/m9.figshare.8091512.v1 | 12 d ago | JSON v1 |
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|---|---|---|---|
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| concepts[field].anzsrc:group:3402 | enrichment · DataCite | taxonomy-embedding@1.1.0 | title+keywords+description (69%) |
| concepts[field].fos:chemical-engineering | source · DataCite | connector:datacite@1.0.0 | |
| concepts[field].fos:materials-engineering | source · DataCite | connector:datacite@1.0.0 | |
| concepts[modality].local:modality:microscopy | enrichment · DataCite | keyword-concept-rules@1.0.0 | title+description (75%) |
| created_date | source · DataCite | connector:datacite@1.0.0 | |
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| title | source · DataCite | connector:datacite@1.0.0 | /data/attributes/titles/0/title |
| updated_date | source · DataCite | connector:datacite@1.0.0 |