Formation and Structure of Cross-Linked Polyacrylates - Methods for Modeling Network Formation
Superabsorbent Polymers - Science and Technology
Models developed to describe free radical crosslinking polymerizations may be divided into three classes: statistical models, kinetic descriptions, and kinetic gelation simulations. This paper provides a comparison of the three types of models by describing the approach, assumptions, strengths, and limitations of each when applied to lightly crosslinked systems. The greatest strength of the statistical approach arises from the wealth of post-gel structural information that can be obtained, however these models have difficulty accounting for history-dependent effects. Kinetic descriptions may properly describe history-dependent reaction non-idealities, but are unable to account for localized effects that are prevalent in highly crosslinked systems. The kinetic gelation simulations may describe topological constraints and localized effects but are of limited use for lightly crosslinked polymers due to their inability to accurately account for molecular motions.
Published Article/Book Citation
Superabsorbent Polymers - Science and Technology, 573 (1994) pp.2-26.