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polydispersity.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Polymer Sciences: Polydispersity</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.4/Chart.bundle.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.4/Chart.js"></script>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/chartjs-plugin-annotation/0.5.7/chartjs-plugin-annotation.js"></script>
<script src="https://unpkg.com/mathjs/lib/browser/math.js"></script>
</head>
<body>
<!-- Header -->
<img src="https://static.wixstatic.com/media/c6776b_cfa98697877f47a58e56a8f9ea16737e~mv2.png"
style="float:right; width:25%; height: 25%">
<!-- Accept input for coefficient 'PDI' -->
<style>
fieldset {
display: inline-block;
font: 80% sans-serif;
margin-left: 1px;
margin-right: 1px;
padding-top: 0.75em;
padding-bottom: 0.75em;
padding-left: 0.75em;
padding-right: 0.75em;
border: none;
}
input[type=number] {
width: 100%;
padding: 10px 10px;
margin: 5px 0;
box-sizing: border-box;
border: 1px solid #7A003C;
}
</style>
<form id="PDI" action="">
<fieldset>
<p>
<label for="pdi">Polydispersity Index, <b><i>PDI</i></b> = </label><span id="polydis">2.06</span>
<input id="pdi" name="pdi" type="range" min="0.2" max="2.3" step="0.01" />
<p>
<b><i>M<sub>N</sub></i></b> = <span id="Mn">8286 </span>
<b><i>M<sub>W</sub></i></b> = <span id="Mw">17101 </span>
<b><i>M<sub>Z</sub></i></b> = <span id="Mz">35101 </span>
</p>
</p>
</fieldset>
</form>
<!-- ChartJS 'Scatter'-->
<canvas id="myChart" width="800" height="450"></canvas>
<!-- Footer -->
<img src="https://static.wixstatic.com/media/c6776b_fd904ab717354645a26026a817af931a~mv2.png"
style="width:75%; height: 75%; padding-top: 25px;" />
<!-- ChartJS 'Scatter' JavaScript -->
<script type="text/javascript">
// Editable function -start-
var plotNew = new Chart(document.getElementById("myChart").getContext('2d'))
plotNew.destroy();
$('#PDI').on("click", (event) => {
if (event.which === 1) {
event.preventDefault();
const pdi = parseFloat($('#pdi').val());
let xInputs = [-5.0, -4.5, -4.0, -3.5, -3.0, -2.5, -2.0, -1.5, -1.0, -0.5, 0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0]
let MW = [100, 150, 225, 338, 506, 759, 1139, 1709, 2563, 3844, 5767, 8650, 12975, 19462, 29193, 43789, 65684, 98526, 147789, 221684, 332526]
// Normal Distribution
Fx = xInputs.map(x =>
(1 / (pdi * Math.sqrt(2 * Math.PI))) * Math.exp((-0.5 * ((x) / pdi) ** 2)));
// Nmol for a normal distribution where N_multiplier = 100,000
Nmol = Fx.map(x => x * 100000);
// Number average molecular weight, Mn
Mn_num = math.dot(Nmol, MW);
Mn_den = math.sum(Nmol);
Mn = math.round((Mn_num / Mn_den), 0);
document.getElementById("Mn").innerHTML = Mn;
// Weight average molecular weight, Mw
MW2 = MW.map(x => x ** 2);
Mw_num = math.dot(Nmol, MW2);
Mw = math.round((Mw_num / Mn_num), 0);
document.getElementById("Mw").innerHTML = Mw;
// Z-average molecular weight, Mz
MW3 = MW.map(x => x ** 3);
Mz_num = math.dot(Nmol, MW3);
Mz = math.round((Mz_num / Mw_num), 0);
document.getElementById("Mz").innerHTML = Mz;
// Polydispersity Index, PDI
polydis = math.round((Mw / Mn), 2);
document.getElementById("polydis").innerHTML = polydis;
console.log(Mn, Mw, Mz, polydis);
// Editable function -end-
plot.destroy();
plotNew.destroy();
// Generated plot
plotNew = new Chart(document.getElementById("myChart").getContext('2d'), {
type: 'bar',
data: {
datasets: [{
label: 'Bar',
data: Nmol,
}, {
label: 'Line',
data: Nmol,
type: 'line',
fill: false,
borderColor: "#000000",
borderWidth: 1
}],
labels: ["100",
"150",
"225",
"338",
"506",
"759",
"1139",
"1709",
"2563",
"3844",
"5767",
"8650",
"12975",
"19462",
"29193",
"43789",
"65684",
"98526",
"147789",
"221684",
"332526"]
},
options: {
tooltips: { enabled: false },
hover: { mode: null },
animation: {
duration: 0
},
scales: {
yAxes: [{
scaleLabel: {
display: true,
labelString: 'N (mol)'
},
ticks: {
min: 0,
max: 200000
}
}],
xAxes: [{
scaleLabel: {
display: true,
labelString: 'MW'
}
}]
},
legend: {
display: false
}
}
});
}
})
// Initial plot
var plot = new Chart(document.getElementById("myChart").getContext('2d'), {
type: 'bar',
data: {
datasets: [{
label: 'Bar',
data: [245.1434173,
586.5180125,
1280.154404,
2548.961276,
4630.032108,
7672.283642,
11598.05543,
15994.31305,
20121.75636,
23093.30347,
24178.32002,
23093.30347,
20121.75636,
15994.31305,
11598.05543,
7672.283642,
4630.032108,
2548.961276,
1280.154404,
586.5180125,
245.1434173
],
}, {
label: 'Line',
data: [245.1434173,
586.5180125,
1280.154404,
2548.961276,
4630.032108,
7672.283642,
11598.05543,
15994.31305,
20121.75636,
23093.30347,
24178.32002,
23093.30347,
20121.75636,
15994.31305,
11598.05543,
7672.283642,
4630.032108,
2548.961276,
1280.154404,
586.5180125,
245.1434173
],
type: 'line',
fill: false,
borderColor: "#000000",
borderWidth: 1
}],
labels: ["100",
"150",
"225",
"338",
"506",
"759",
"1139",
"1709",
"2563",
"3844",
"5767",
"8650",
"12975",
"19462",
"29193",
"43789",
"65684",
"98526",
"147789",
"221684",
"332526"]
},
options: {
tooltips: { enabled: false },
hover: { mode: null },
animation: {
duration: 0
},
scales: {
yAxes: [{
scaleLabel: {
display: true,
labelString: 'N (mol)'
},
ticks: {
min: 0,
max: 200000
}
}],
xAxes: [{
scaleLabel: {
display: true,
labelString: 'MW'
}
}]
},
legend: {
display: false
}
}
});
</script>
</body>
</html>