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|style="background-color: #EEE"|[[Image:BDLlogo_notext_lr.png|128px]]<span style="font-size:22px;"> Experimental Chemistry</span>
 
|style="background-color: #EEE"|[[Image:BDLlogo_notext_lr.png|128px]]<span style="font-size:22px;"> Experimental Chemistry</span>
|style="background-color: #F2F2F2" align="center"|<html><img src="/images/9/94/Report.png" border="0" /></html> [[{{#sub:{{FULLPAGENAME}}|0|-11}}|Main project page]]<br />{{#if:{{#lnpreventry:{{FULLPAGENAME}}}}|<html><img src="/images/c/c3/Resultset_previous.png" border="0" /></html>[[{{#lnpreventry:{{FULLPAGENAME}}}}{{!}}Previous entry]]<html>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</html>}}{{#if:{{#lnnextentry:{{FULLPAGENAME}}}}|[[{{#lnnextentry:{{FULLPAGENAME}}}}{{!}}Next entry]]<html><img src="/images/5/5c/Resultset_next.png" border="0" /></html>}}
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|style="background-color: #F2F2F2" align="center"|[[File:Report.png|frameless|link={{#sub:{{FULLPAGENAME}}|0|-11}}]][[{{#sub:{{FULLPAGENAME}}|0|-11}}|Main project page]]<br />{{#if:{{#lnpreventry:{{FULLPAGENAME}}}}|[[File:Resultset_previous.png|frameless|link={{#lnpreventry:{{FULLPAGENAME}}}}]][[{{#lnpreventry:{{FULLPAGENAME}}}}{{!}}Previous entry]]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}}{{#if:{{#lnnextentry:{{FULLPAGENAME}}}}|[[{{#lnnextentry:{{FULLPAGENAME}}}}{{!}}Next entry]][[File:Resultset_next.png|frameless|link={{#lnnextentry:{{FULLPAGENAME}}}}]]}}
 
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==Description==
 
==Description==
Dimensional Mechanical Analysis will be performed on previously synthesized PVOH films consisting of the following: 1) MW: 22000 2) MW: 100000 3) MW: 22000 with phosphoric acid 4) MW: 100000 with hydrochloric acid 5) MW: 22000 with phosphoric acid and maleic acid. Samples 3-5 were crosslinked via dehydration in the oven at 120 degrees celsius for 90 minutes. Samples of films 1 and 2 were also cross linked via dehydration for a before and after comparison of crosslinking.
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Dimensional Mechanical Analysis (DMA) will be performed on previously synthesized PVOH films consisting of the following:  
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1) MW: 22000  
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2) MW: 100000  
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3) MW: 22000 with phosphoric acid  
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 +
4) MW: 100000 with hydrochloric acid  
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 +
5) MW: 22000 with phosphoric acid and maleic acid.  
 +
 
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Samples 3-5 were crosslinked via dehydration in the oven at 120°C for 90 minutes. Samples of films 1 and 2 were also cross linked via dehydration for a before and after comparison of crosslinking.
  
 
==Data==
 
==Data==
'''PVOH MW: 22000''' height: 20.49mm width: 0.22mm. The films that were cross-linked in the oven had some considerable changes in color and toughness.
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<u>PVOH MW: 22000</u>
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height: 20.49mm  
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width: 0.22mm.  
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The films that were cross-linked in the oven had some considerable changes in color and toughness:
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*MW 100,000: film became much tougher, no visible color changes.
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*MW 22000: no toughness or color changes.
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*MW 22000 w/ phosphoric acid: film became much tougher and turned a slight yellowish brown color.
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*MW 22000 with phosphoric acid and maleic acid: no changes in toughness or color.  
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*MW: 100,000 w/ hydrochloric acid: toughness did not change but color became a very dark black
  
 
==Notes==
 
==Notes==

Latest revision as of 21:05, 26 September 2017

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Objective

Dynamic Mechanical Analysis of PVOH films

Description

Dimensional Mechanical Analysis (DMA) will be performed on previously synthesized PVOH films consisting of the following:

1) MW: 22000

2) MW: 100000

3) MW: 22000 with phosphoric acid

4) MW: 100000 with hydrochloric acid

5) MW: 22000 with phosphoric acid and maleic acid.

Samples 3-5 were crosslinked via dehydration in the oven at 120°C for 90 minutes. Samples of films 1 and 2 were also cross linked via dehydration for a before and after comparison of crosslinking.

Data

PVOH MW: 22000

height: 20.49mm

width: 0.22mm.

The films that were cross-linked in the oven had some considerable changes in color and toughness:

  • MW 100,000: film became much tougher, no visible color changes.
  • MW 22000: no toughness or color changes.
  • MW 22000 w/ phosphoric acid: film became much tougher and turned a slight yellowish brown color.
  • MW 22000 with phosphoric acid and maleic acid: no changes in toughness or color.
  • MW: 100,000 w/ hydrochloric acid: toughness did not change but color became a very dark black

Notes

A non-cross linked sample of film 1 will have to be re-analyzed as the length was entered as 3.5mm instead of 5.3mm