Dielectric Relaxation Studies of 2-Butoxyethanol with Aniline and Substituted Anilines Using Time Domain Reflectometry
Table 1
Values of static dielectric constant () and relaxation time (τ) of aniline + 2-butoxyethanol binary mixtures at 298.15 K.
% Aniline
Aniline + 2-BE
o-CA + 2-BE
m-CA + 2-BE
o-A + 2-BE
m-A + 2-BE
Static dielectric constant ()
0%
9.99 (4)
9.99 (4)
09.99 (4)
9.99 (4)
9.99 (4)
25%
9.09 (1)
9.45 (5)
10.43 (7)
9.37 (4)
9.78 (1)
50%
8.30 (6)
8.98 (7)
11.05 (3)
8.02 (4)
9.57 (1)
75%
7.48 (2)
8.16 (3)
11.96 (8)
5.94 (4)
9.36 (3)
100%
6.59 (1)
7.78 (4)
12.94 (6)
4.45 (4)
9.21 (4)
Dielectric constant at optical frequency ()
0%
1.719 (2)
1.719 (2)
1.719 (2)
1.719 (2)
1.719 (2)
25%
2.196 (2)
2.299 (3)
2.342 (1)
2.323 (4)
2.325 (1)
50%
2.469 (1)
2.364 (2)
2.506 (4)
2.414 (4)
2.421 (1)
75%
2.742 (1)
2.512 (1)
2.747 (3)
2.502 (4)
2.635 (3)
100%
2.826 (1)
2.814 (1)
3.043 (1)
2.652 (4)
2.794 (2)
Relaxation time () ps
0%
47.86 (9)
47.86 (9)
47.86 (9)
47.86 (9)
47.86 (9)
25%
40.12 (7)
42.54 (6)
48.36 (9)
38.36 (11)
63.78 (13)
50%
28.12 (4)
37.35 (3)
48.89 (6)
28.87 (6)
89.08 (7)
75%
21.25 (6)
30.49 (4)
49.78 (5)
19.38 (7)
101.12 (11)
100%
16.20 (8)
24.22 (8)
50.89 (7)
10.45 (8)
124.27 (15)
The number in bracket represents error in least significant digit of the corresponding value as obtained by the least squares fit method; for example, 9.99 (1) means .
