Research Article

Study of Thermal Decomposition of the Copolymer Based on Polyethylene Glycol Fumarate with Acrylic Acid

Table 1

Some of the kinetic models used in the solid-state kinetics.

Reaction modelCodef(α)

1Power lawP44α3/4α1/4
2Power lawP33α2/3α1/3
3Power lawP22α1/2α1/2
4Power lawP2/32/3α−1/2α3/2
5One-dimensional diffusionD11/2α−1α2
6Mampel (first order)F11−α−ln(1 − α)
7Avrami–ErofeevA44(1 − α)[−ln(1 − α)]3/4[−ln(1 − α)]1/4
8Avrami–ErofeevA33(1 − α)[−ln(1 − α)]2/3[−ln(1 − α)]1/3
9Avrami–ErofeevA22(1 − α)[−ln(1 − α)]1/2[−ln(1 − α)]1/2
10Three-dimensional diffusionD33/2(1 − α)2/3[1−(1 − α)]1/3]−1[1−(1 − α)]1/3]2
11Contracting sphereR33(1 − α)1−(1 − α)1/3
12Contracting cylinderR22(1 − α)1−(1 − α)1/2
13Two-dimensional diffusionD2[−ln(1 − α)]−1(1−α) ln(1 − α) + α