User:Melissa Novy/Notebook/CHEM-572/2013/03/19

From OpenWetWare
< User:Melissa Novy‎ | Notebook‎ | CHEM-572‎ | 2013‎ | 03
Revision as of 18:53, 9 April 2013 by Melissa Novy (talk | contribs) (ISE Study of PLA2002D + 5 wt% LMT)
Jump to: navigation, search

<!-- sibboleth --><div id="lncal1" style="border:0px;"><div style="display:none;" id="id">lncal1</div><div style="display:none;" id="dtext"></div><div style="display:none;" id="page">User:Melissa Novy/Notebook/CHEM-572/2013/03/19</div><div style="display:none;" id="fmt">yyyy/MM/dd</div><div style="display:none;" id="css">OWWNB</div><div style="display:none;" id="month"></div><div style="display:none;" id="year"></div><div style="display:none;" id="readonly">Y</div></div>

BDLlogo 300.png <sitesearch>title=Search this Project</sitesearch>

Customize your entry pages <html><img src="/images/a/aa/Help.png" border="0" /></html>

Objectives

  • Cast a 3 g film of PLA2002D + 10 wt% 100Ag-LMT.
  • Conduct silver ISE studies on samples of PLA2002D + 5 wt% LMT.
  • Make AgNO3 calibration solutions in polypropylene Falcon tubes ranging from 1 nM to 0.1 M.

PLA2002D + 10 wt% 100Ag-LMT Film

  • A solution of PLA2002D and 100Ag-LMT, made on 2013/03/05 was cast into a Teflon dish. Please refer to the entry on 2013/02/06 for the protocol.

ISE Study of PLA2002D + 5 wt% LMT

  • From a 3 g film of PLA2002D + 5 wt% LMT, made on 2013/02/19, three 0.5 g samples were cut with scissors. Each sample was placed in a 100-mL polypropylene beaker filled with 50 mL pure H2O and 1 mL of ionic strength adjuster (ISA). The control was a solution consisting of 50 mL pure H2O and 1 mL of ISA without a film in a polypropylene beaker.
  • The conductivity of each solution was measured with an Accumet silver/sulfide ISE every 30 min for a period of 2 h, then again after about 24 h. The corrected conductivity of the film-soaking solutions was corrected by subtracting the conductivity of the control from that of the film-soaking solutions.
  • Conductivity of Solutions Containing PLA2002D + 5 wt% LMT
Time [min] Sample [] Conductivity [mV] Average Conductivity [mV] Corrected Conductivity [mV]
0 Control 246.2 238.2
232.7
235.7
1 292.1 283.5333333 45.33333333
2 284.8
3 273.7
30 Control 247.9 240.0666667
237.6
234.7
1 300.5 285 44.93333333
2 286.6
3 267.9
60 Control 248.7 240.2666667
237.8
234.3
1 263.1 258.1333333 17.86666667
2 258.5
3 252.8
90 Control 243.4 236.5333333
234.4
231.8
1 247.6 246.5 9.966666667
2 241.8
3 250.1
120 Control 235.4 235.4666667
237.1
233.9
1 240.5 231.1 -4.366666667
2 225.5
3 227.3
1380 (23 h) Control 333.5 325.4333333
320.5
322.3
1 229.9 225.3666667 -100.0666667
2 218.8
3 227.4

AgNO3 Calibration Solutions

  • Solutions of AgNO3 at the following concentrations were made in polypropylene containers and with pure H2O: 1 nM, 10 nM, 100 nM, 1 μM, 10 μM, 100 μM, 1 mM, 10 mM, and 100 mM. Please refer to the entries on 2013/02/13 and 2013/02/05 for the protocol.