Table 1.
Correlation of Kauzmann temperatures TK with Vogel-Fulcher T0 to values for various substances
Substance | Tga | TK | Ref.b |
T0 (high) |
T0 (low) |
Ref. | Tg/T0 | Tg/TK | frag. mc |
(frag.)−1 D |
−logτ0d (−logη0) (−logD0) |
TK/T0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1-butene | 58a | 48 | 1 | 64(η) | [54(η)] | 31 | 1.07 | 1.20 | >0.88 | |||
2-methylpentane | 78a | 58 | 2 | 59(η) | 60+5 (η) | 32, 33 | 1.43 | 1.38 | 58 | 0.97 | ||
83 | n-hex. | |||||||||||
butyronitrile | 100 | 81.2 | 3 | 58(τD) | 34 | 1.72 | 1.19 | 47 | 32 | 16 | 1.26↓ | |
ethanol | 95 | 71 | 4b | 70–75(τD) | 35 | 1.28 | 1.33 | 7 | 1.0 | |||
90a | 80(τD) | 36 | 1.19 | 2.7 | 8.9 | 0.93↑ | ||||||
methanol | 103 | 64±5 | 5, 6 | 60±15(τD) | 37(a) | 1.71 | 1.61 | 12.4 | 1.06 | |||
9 | 66(D) | 37(b) | 12.4 | (7.1) | 0.97 | |||||||
n-propanol | 105 | 73 | 7 | 73.5(η) | 73.5(τD) | 38 | 1.42 | 1.44 | 33 | 11.7 | 1.00↑ | |
100a | 50.3(τD) | 36 | 40 | 12.4 | 1.45 | |||||||
toluene tol + 17% benzCl | 126 | 96 | 8 | 103(η) | <108(τD) | 39(a) | >1.16 | 1.19 | 5.6 | (3.5) | 0.93 | |
126 | 108(τD) | 108(τD) | 39(b) | >1.16 | 107 | 13.0 | ~1.0 | |||||
ethylene glycol (ethan diol) | 153 | 115 | 9 | 109(τD) | 40 | 1.43 | 1.33 | 16 | 14.3 | 1.05 | ||
119 | 10 | 125 (η) | 41 | 1.22 | ||||||||
1–3 prop. diol | 154 | 109 | 10 | 1.41 | ||||||||
145a | ||||||||||||
1–2 prop diol (Tg=Tg(1·3)+18 | 172 | 109+18? | 11 | 109(η) | 114(τH) | 42 | 1.57 | 1.41 | 52 | 17.8 | 14.6 | 1.11 |
(127) | 122(τD) | 42 | 52 | 13.5 | 13.2 | 1.04 | ||||||
glycerol | 193 | 135 | 12b | 128(τH) | 42 | 1.51 | 1.43 | 53 | 19.5 | 15.6 | 1.04 | |
187 | 137(τH) | 44 | 1.41 | 53 | 0.99 | |||||||
127(τD) | 38,9 | 1.52 | 12.7 | 14.6 | 1.07 | |||||||
127(τD) | 45 | 8 | 33 | 1.07↓ | ||||||||
121(τD) | 45(b) | 1.11 | ||||||||||
H2SO4·1H2O | 182 | 142 | 13b | 146(σ) | 46 | 1.25 | 1.28 | 0.97 | ||||
H2SO4·2H2O | 169 | 131 | 13b | 120(σ) | 46 | 1.41 | 1.29 | 1.09 | ||||
H2SO4·3H2O | 162 | 135 | 13b | 128(σ) | 46 | 1.27 | 1.20 | 1.05 | ||||
155a | ||||||||||||
H2SO4·4H2O | 157 | 133 | 13b | 136(η) | 46 | 1.15 | 1.18 | |||||
136(σ) | 46 | 0.98 | ||||||||||
triphen.phosfite | 205 | 166 | 14 | 183 | 186 | 34 | 1.12 | 1.23 | 160 | 2.9 | 13.3 | 0.91 |
PMS (disiloxane) | 165a | 137 | 15(a) | 47 | 1.20 | |||||||
Salol | 220a | 167 | 16 | 135(τH) | 48 | 1.63 | 1.31 | 38.7 | 24.5 | 1.24↓ | ||
157 | 17,48 | 141(τD) | 48 | 1.56 | 1.40 | 33 | 23.3 | 1.11↓ | ||||
orthoterphenyl and otp + 16% opp | 244 | 200 | 18 | 184(τH) | 49(a) | 1.33 | 1.22 | 17.7 | 1.09↓ | |||
196(η) | 17, 32 | 1.26 | 1.26 | 81c | 1.04 | |||||||
193(η) | 50 | |||||||||||
dibutyl phthallate1 (uncrystallizable) | 179 | 19 | 151(η) | 151(η) | 51 | 1.18 | (3.6) | |||||
137(τD) | 32, 49(b) | 1.30 | 69 | 14 | ||||||||
m-toluidinc | 187 | 151 | 14,8(b) | 153(τD) | 8(b) | 79 | 13 | 1.00 | ||||
157 | 15(b) | |||||||||||
propylene carbonate | 156 | 125.8 | 20 | 130(τD) | 52 | 1.20 | 1.23 | 104 | 2.9 | 13.1 | 0.97 | |
128 | 52b | 132.3(τD) | 36 | 0.95 | ||||||||
Ca(NO3)2·4H2O | 217 | 200 | 21 | 205(η) | 53 | 1.09 | 0.98 | |||||
204 | 22 | 190(η) | 54 | 1.14 | 1.05 | |||||||
201(σ) | 55 | 1.08 | 1.0 | |||||||||
Cd(NO3)2·4H2O | 213 | 198 | 21 | 56 | 1.08 | |||||||
fructose | 286 | 210 | 14 | 206(τE) | 57 | 1.39 | 1.36 | 13.5 | 1.02 | |||
glucose | 306 | 271a | 23 | 231 | 58 | 1.32 | 1.13 | 1.17 | ||||
259(τD) | 43 | 1.18 | 12 | 1.05 | ||||||||
mannitol | 282 | 236 | 9, 24 | |||||||||
sorbitol (dulcitol) | 266 | 236? | 24 | 212(η) | 59 | 1.13 | 93 | 8.6 | 1.11 | |||
217 | 24 | 224(τD) | 9 | 1.19 | 1.23 | 7.8 | 14.3 | 1.05 | ||||
sucrose | 323 | 283 | 25 | 290 | 58 | 1.11 | 1.14 | 0.154 | 0.98 | |||
287 | 14 | 1.125 | ||||||||||
trehalose | 388 | 14 | 57 | 13.5 | ||||||||
phenolphtalein | 363 | 310 | 14 | 274(τE) | 57 | 1.32 | 1.17 | 13.5 | 1.13 | |||
selenium | 307 | 240±10 | 26 | 251(η) | 32,63 | 1.22 | 1.28 | 87c | 1.04 | |||
ZnCl2 | 380 | 250±25 | 27 | 260(η) | 60 | 1.46 | 1.52 | 0.96 | ||||
180(τ1) | 32,64 | 30c | 14 | 1.39 | ||||||||
236(τV) | 32,65 | 1.61 | 42.5c | 14 | 1.06 | |||||||
Li acetate | 401 | 381e | 28 | 371(σ) | 61 | 1.08 | 1.05a | 14 | 1.03 | |||
As2S3 | 455 | 265 | 26 | 237(τh) | 44 | 1.82 | 1.93 | 18.7 | 1.00↓ | |||
La2O·2B2O3 | 959 | 845 | 29 | 864 | 850(η) | 29 | 1.12 | 1.13 | 0.99 | |||
CaAl2Si2O8 | 1118 | 815 | 30 | 805(η) | 62 | 1.39 | 1.37 | 1.01 |
Tg value based on the onset Cp from adiabatic calorimetry, which is several degrees lower than scanning calorimetry or DTA-based values because of the much longer time scale. Tg/TK values are based on 10 K/min DSC or DTA data for Tg.
- C. A. Angell and W. Sichina, Ann. N.Y. Acad. Sci. Vol. 279 (1976) p. 53.
- E. J. Sare, Ph. D. thesis, Purdue Univ. (1970).
- D. L. Smith, Ph. D. thesis, Purdue Univ. (1983).
Many values of m, defined as the slope of a Fig. 6 type plot at Tg/T = 1, are compiled in R. Bohmer, K. L. Ngai, C. A. Angell, and D. J. Plazek, J. Chem. Phys. 99 (5), 4201–4209 (1993). Where the m value is used to obtain T0 via Ref. 32, the superscript c is attached to the m value. Such T0 values are associated with −logτ0 of 14 by assignment.
−logτ0 is the value of τ0 which is the best fit value for the T0 value cited. If −logτ0 is numerically larger than the physical value of 14 (phonons), then the T0 value should be weighted up, and therfore TK/T0 should be weighted down. Where this is an important effect, the value of TK/T0 is tagged ↑ or ↓ to indicate the need for adjustment. For viscosity, the equivalent value of −log(η0/P) is 3.5 and for diffusivity −log(D0/m2s−1) is 7.55. For cases in which T0 is obtained from an m value via Ref. 32, the value of −logτ0 is 14 by assignment.
- σ
- T0 value from conductivity.
- η
- T0 value from viscosity measurements.
- τD
- T0 value from dielectric relaxation measurements.
- τE
- T0 value from tensile stress relaxation measurements and assignment τ0 = 10–13.5 s.
- τH
- T0 value from ac heat capacity measurements.
- τL
- T0 value from longitudinal relaxation time from digital correlation spectroscopy.
- τh
- T0 value from Sherer-Hodge Tg analysis Ref. 44.
- τV
- T0 value from volume relaxation activation energy at Tg and Ref. 32.
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