Alteração do caráter hidrofílico de filmes de quitosana por tratamento de plasma de HMDS Change in hydrophilic characteristics of chitosan films by hmds plasma treatment
<abstract language="eng">Alteration in hydrophilicity feature of chitosan films by hexamethyldisilazane (HMDS) cold-plasma treatment is evaluated. All treated films were colorless and transparent with no apparent textural changes. The effect on surfaces was characterized through cont...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2010-01-01
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| Series: | Química Nova |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000300022 |
| Summary: | <abstract language="eng">Alteration in hydrophilicity feature of chitosan films by hexamethyldisilazane (HMDS) cold-plasma treatment is evaluated. All treated films were colorless and transparent with no apparent textural changes. The effect on surfaces was characterized through contact angle measurements, degree of swelling and water vapor permeation. A significant reduction in all of the hydrophilicity parameters was observed. It is assumed that the HMDS treatment forms nonpolar silicone type structures. The goal is to investigate the formation of a stable hydrophobic barrier in order to increase the chitosan films usefulness in packaging applications. |
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| ISSN: | 0100-4042 1678-7064 |