User:Moira M. Esson/Notebook/CHEM-581/2013/01/30: Difference between revisions
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'''Hydrogel information''': | '''Hydrogel information''': | ||
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| align="center" style="background:#f0f0f0;"|'''Preparation of PVOH(MW 146,000-186,000)-clay hydrogels''' | |||
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|''' Composition of hydrogel'''||'''Amount of PVOH(g)'''||'''Amount of clay(g)'''||'''Amount of DMSO added(mL)''' | |||
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| 90:10 PVOH: 50% exchanged NaMT||0.9001||0.1001||0.0655 | |||
|- | |||
| 100% PVOH||1.02193||0||0 | |||
|- | |||
| 50:50 PVOH:50% exchanged NaMT||0.5098||0.4997||0.0364 | |||
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| 90:10 PVOH:NaMT||0.90698||0.1002||0.0655 | |||
|- | |||
| 50:50 PVOH:NaMT||0.50399||0.4999||0.0364 | |||
|- | |||
| 90:10 PVOH:Lamponite||0.9062||0.1001||0.0655 | |||
|- | |||
| 50:50 PVOH:Lamponite||0.5105||0.4999||0.0364 | |||
|} | |||
'''Observations''': | '''Observations''': | ||
*Hydrogels containing sodium montmorillonite(NaMT) required the addition of 1mL distilled H<sub>2</sub>O and required longer heating time. This should be noted when dye is added. A separate, slightly more concentrated stock solution of dye should be prepared for addition to any hydrogels with NaMT additive. | *Hydrogels containing sodium montmorillonite(NaMT) required the addition of 1mL distilled H<sub>2</sub>O and required longer heating time. This should be noted when dye is added. A separate, slightly more concentrated stock solution of dye should be prepared for addition to any hydrogels with NaMT additive. | ||
*After preparation of 6 hydrogels, realized that the inclusion of dye will be necessary before the freeze-thaw crosslinking method is performed. I.e. Dye should be added during heating process of PVOH-clay reaction mixture. | *After preparation of 6 hydrogels, realized that the inclusion of dye will be necessary before the freeze-thaw crosslinking method is performed. I.e. Dye should be added during heating process of PVOH-clay reaction mixture. | ||
==Calcualtions for dye preparation== | ==Calcualtions for dye preparation== | ||
Revision as of 08:31, 1 February 2013
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Objectives
Preparation of HydrogelsGeneral Protocol:
The following procedure was adapted from PVA–clay nanocomposite hydrogels for wound dressing
Observations:
Calcualtions for dye preparation |