User:Dominique Brager/Notebook/481 Notebook/2016/09/16: Difference between revisions

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|style="background-color: #EEE"|[[Image:BDLlogo_notext_lr.png|128px]]<span style="font-size:22px;"> Biomaterials Design Lab</span>
|style="background-color: #EEE"|[[Image:BDLlogo_notext_lr.png|128px]]<span style="font-size:22px;"> Biomaterials Design Lab</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>}}
|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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:*After 7 minutes, add 7 mL of sodium bicarbonate and stir for 30 seconds.
:*After 7 minutes, add 7 mL of sodium bicarbonate and stir for 30 seconds.
   
   
*Ran DSC on
*Activated Carbon Beads
:* Same procedure as above using 2.5g PVA, 0.275 g Activated Carbon, 30mL 10% HCl.
 
*DSC run on:
:*PVOH
:*PVOH film with 10% bentonite from powder
:*PVOH film with 10% bentonite from solution
:*PVOH Beads with 10% clay solution


==Data==
==Data==
* Add data and results here...
[[Image:PVOH_neat.jpg|500px]]
[[Image:PVOH_x-link.jpg|500px]]
[[Image:PVOH_x-link_10clay.jpg|500px]]
[[Image:PVOH_x-link_10clay_Beads.jpg|500px]]


==Notes==
{| {{table}}
This area is for any observations or conclusions that you would like to note.
|+ DSC Data
|- style="border: 1px solid #777777;" style="background: #CCCCCC;"
|
| Glass Transition (°C)
| Melting Point (°C)
|Heat of Melting (J/g)
|-  style="background: #DBDBDB;"
|PVOH
|70.25
|191.13
|35.66
|-  style="background: #DBDBDB;"
|PVOH x-link
|80.07
|179.67
|0.6426
|-  style="background: #DBDBDB;"
|PVOH x-link 10% clay
|82.19
|168.08
|0.5314
|}


*no glass transition, melting point, or heat of melting determined for PVOH 10% Beads


Use categories like tags. Change the "Course" category to the one corresponding to your course. The "Miscellaneous" tag can be used for particular experiments, as instructed by your professor. Please be sure to change or delete this tag as required so that the categories remain well organized.
Percent of PVOH not cross-linked:


[[Category:Course]]
*PVOH x-linked film without clay:
[[Category:Miscellaneous]]
:: 0.6426J/g / 35.66J/g *100% = 1.8%


*PVOH x-linked film with 10% clay:
:: 0.5314J/g / 35.66J/g *100% = 1.49%


==Notes==
Both activated carbon and 20% beads formed well into many small beads.


[[Category:Course]]
The cross linking of PVOH films was successful. Only a very small percentage of the films were not cross linked.
[[Category:Miscellaneous]]


Beads put in the oven for DSC came out black due to acid left over. This may have cross linked them even more. The DSC analysis does not show glass transition or melting point showing that the beads were successfully cross linked.


 
Further analysis must be done on beads that were not dried in acid to be sure that beads are successfully cross linked.
 
 
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__NOTOC__
__NOTOC__

Latest revision as of 02:00, 27 September 2017

Biomaterials Design Lab Main project page
Previous entry      Next entry



Objective

  • Make beads using the large batch profile. Use clay solution to have a 20% clay in film composite
  • Run DSC on previously crosslinked films
  • Prepare beads using 10% activated carbon instead of the clay.

Description

  • 20% clay beads:

1.25g PVA

1.25g PVA/4 = 0.3125g

0.3125g Bentonite * 97ml solution/3g bentonite = 10.1 mL bentonite solution

55mL solution - 10 mL bentonite solution - 15mL HCL: 30 mL H2O

  • Create a solution of 1.25 g PVA, 10mL bentonite solution, and 15 mL conc HCl.
  • Place this solution on a hot plate and heat/stir until everything has dissolved.
  • Add 5 mL of this solution to a 50 mL solution of ethyl acetate stirring at 240 rpm in a dropwise manner.
  • Add 0.5 mL of glutaraldehyde and stir at 260 rpm for 3 minutes.
  • After 3 minutes, add 0.5 mL of glutaraldehyde and stir at 300 rpm for 2 minutes.
  • After 7 minutes, add 7 mL of sodium bicarbonate and stir for 30 seconds.
  • Activated Carbon Beads
  • Same procedure as above using 2.5g PVA, 0.275 g Activated Carbon, 30mL 10% HCl.
  • DSC run on:
  • PVOH
  • PVOH film with 10% bentonite from powder
  • PVOH film with 10% bentonite from solution
  • PVOH Beads with 10% clay solution

Data

DSC Data
Glass Transition (°C) Melting Point (°C) Heat of Melting (J/g)
PVOH 70.25 191.13 35.66
PVOH x-link 80.07 179.67 0.6426
PVOH x-link 10% clay 82.19 168.08 0.5314
  • no glass transition, melting point, or heat of melting determined for PVOH 10% Beads

Percent of PVOH not cross-linked:

  • PVOH x-linked film without clay:
0.6426J/g / 35.66J/g *100% = 1.8%
  • PVOH x-linked film with 10% clay:
0.5314J/g / 35.66J/g *100% = 1.49%

Notes

Both activated carbon and 20% beads formed well into many small beads.

The cross linking of PVOH films was successful. Only a very small percentage of the films were not cross linked.

Beads put in the oven for DSC came out black due to acid left over. This may have cross linked them even more. The DSC analysis does not show glass transition or melting point showing that the beads were successfully cross linked.

Further analysis must be done on beads that were not dried in acid to be sure that beads are successfully cross linked.

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