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{
"metadata": {
"name": ""
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 23: Polymer Materials"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 23.1, page no-625"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Sulphur required for final rubber product\n",
"\n",
"import math\n",
"#Variable Declaration\n",
"p_wt=500 # weight of final rubber product\n",
"w1= 32.0 # atomic weight of sulphur\n",
"w2= 54.0 # weight of monomer unit\n",
"\n",
"#Calculation\n",
"s_req=w1/(w1+w2)\n",
"s_req= math.floor(s_req*100)/100\n",
"\n",
"\n",
"#Result\n",
"print('Therefore, sulphur required for %d *10^3 kg of final rubber product = %d * 10^-3 kg'%(p_wt,s_req*p_wt))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Therefore, sulphur required for 500 *10^3 kg of final rubber product = 185 * 10^-3 kg\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 23.2, page no-625"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# Photon energy to break C C bond\n",
"\n",
"import math\n",
"#Variable Declaration\n",
"E=370*10**3 # energy of c-c bond j/mol\n",
"lam=3200*10**-10 # wavelength of UV light\n",
"h=6.626*10**-34 # Planck's constant\n",
"c=3*10**8 # speed of light\n",
"\n",
"#Calculation\n",
"E1=h*c/lam\n",
"Ec=E/(6.02*10**23)\n",
"\n",
"#Result\n",
"print('\\nE=%.1f*10^-19 J'%(E1*10**19))\n",
"print('\\nThe Energy of c-c Bond = %.1f * 10^-19'%(Ec*10**19))\n",
"print('\\n\\nThe UV light photon energy is sufficient to break a C-C bond.\\nTherefore, the polymer deteriorates under the influence of UV light')"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"E=6.2*10^-19 J\n",
"\n",
"The Energy of c-c Bond = 6.1 * 10^-19\n",
"\n",
"\n",
"The UV light photon energy is sufficient to break a C-C bond.\n",
"Therefore, the polymer deteriorates under the influence of UV light\n"
]
}
],
"prompt_number": 7
}
],
"metadata": {}
}
]
}
|
