User:Samiye Yaman/Notebook/Lab 581/2013/02/08: Difference between revisions
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'''Part A: pH study''' | '''Part A: pH study''' | ||
*HCl solutions with different pH were prepared( pH 1.5, 2.5 & 3.5) in order to mimic the pH of stomach. Each hydrogels were left in the solution until wednesday. | ''*HCl solutions with different pH were prepared( pH 1.5, 2.5 & 3.5) in order to mimic the pH of stomach. Each hydrogels were left in the solution until wednesday.'' | ||
*30 ml of water added to the beaker. 0.18 g of PVOH with R6G(MW:146,00)(prepared on 30/01/2013) placed in to the beaker. Drops of 1M of HCl were added to the beaker until pH was close to 1.5. (final pH=1.3) | *30 ml of water added to the beaker. 0.18 g of PVOH with R6G(MW:146,00)(prepared on 30/01/2013) placed in to the beaker. Drops of 1M of HCl were added to the beaker until pH was close to 1.5. (final pH=1.3) | ||
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*Masses of hydrogels before placing in to the water. | *Masses of hydrogels before placing in to the water. | ||
1)PVOH (MW:146,000) with R6G (prepared on 30/01/2013)=0.22g | 1)PVOH (MW:146,000) with R6G (prepared on 30/01/2013)=0.22g | ||
2)PVOH (MW:130,000) with R6G (prepared on 30/01/2013)=0.66g | 2)PVOH (MW:130,000) with R6G (prepared on 30/01/2013)=0.66g | ||
3)PVOH (MW:89,000-98,000) with (prepared on 30/01/2013)=0.55g | 3)PVOH (MW:89,000-98,000) with (prepared on 30/01/2013)=0.55g | ||
Revision as of 13:04, 8 February 2013
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ObjectiveDescriptionPart A: pH study *HCl solutions with different pH were prepared( pH 1.5, 2.5 & 3.5) in order to mimic the pH of stomach. Each hydrogels were left in the solution until wednesday.
1)PVOH (MW:146,000) with R6G (prepared on 30/01/2013)=0.22g 2)PVOH (MW:130,000) with R6G (prepared on 30/01/2013)=0.66g 3)PVOH (MW:89,000-98,000) with (prepared on 30/01/2013)=0.55g DataObservation 1: PVOH with 22,000 molecular mass was still liquid after 3 cycles therefore it can be concluded that it might not be a good candidate for this research.
Notes |