APPENDIX C: RESULTS OF THE MIXED-SOLVENT STUDY
Table C1 Weight gain and relative hardness (Barcol) values of PVC exposed to mixed solvents for
various contact times.
1 day
3 days
7 days
Treatment
Wt. gain (%)
Barcol
Wt. gain (%)
Barcol
Wt. gain (%)
Barcol
control
0.115
80
0.107
79
0.107
79
control
0.102
81
0.103
78
0.091
76
control
0.122
79
0.091
81
0.000
78
control
0.116
79
0.123
77
0.120
78
control
0.000
81
0.000
78
0.219
78
X
0.091
80
0.085
78.6
0.107
77.8
test soln.
2.747
76
5.316
72
5.374
73
test soln.
3.580
74
3.823
74
6.288
71
test soln.
2.580
73
1.687
76
6.215
73
test soln.
3.302
76
2.090
73
5.508
71
test soln.
3.215
75
1.838
76
7.564
72
X
3.085
74.8
2.951
74.2
6.190
72
14 days
21 days
42 days
Treatment
Wt. gain (%)
Barcol
Wt. gain (%)
Barcol
Wt. gain (%)
Barcol
control
0.103
81
0.107
81
0.000
79
control
0.000
79
0.000
81
0.000
80
control
0.207
78
0.102
80
0.109
81
control
0.171
76
0.110
78
0.000
76
control
0.093
80
0.115
80
0.000
79
X
0.115
78.8
0.087
80
0.022
79
test soln.
7.675
63
9.091
71
10.821
66
test soln.
4.220
71
7.898
70
10.955
65
test soln.
6.674
67
9.069
67
10.627
61
test soln.
5.903
68
6.480
64
4.551
68
test soln.
4.178
72
7.956
63
5.587
67
X
5.730
68.2
8.099
67
8.508
65.4
15
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