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Poly(vinyl alcohol) hydrogels: Reinforcement of radiation‐crosslinked networks by crystallization
Abstract
Aqueous poly(vinyl alcohol) solutions were crosslinked via electron‐beam irradiation to form transparent hydrogels of varying crosslinking densities. Typical crosslinked hydrogels with Mc between 3500 and 8000 were weak, easily shattered, nonextensible materials with very low tensile moduli (up to 70 psi) and tensile strengths at break (less than 10 psi). Reinforcement by induction of partial crystallization was accomplished by a two‐stage drying process, consisting of a slow dehydration stage at room temperature and an annealing stage at elevated temperatures, which was mainly responsible for the introduction of the crystallites. The swollen hydrogels after the annealing process had crystallinities widely varying between 30 and 65% and polymer volume fractions between 30 and 60%, depending on the temperature‐time history of the specimen. These materials showed greatly improved mechanical properties (modulus, ultimate tensile strength, tear strength), as compared to the uncrystallized hydrogels.
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Citations
Cited by
Hydrogels in pharmaceutical formulations
Peppas, N. (2000) · European Journal of Pharmaceutics and Biopharmaceutics · doi:10.1016/s0939-6411(00)00090-4 · Cited by 4,011
Self-citationPhysicochemical Foundations and Structural Design of Hydrogels in Medicine and Biology
Peppas, N. A., Huang, Y., Torres-Lugo, M., Ward, J. H., & Zhang, J. (2000) · Annual Review of Biomedical Engineering · doi:10.1146/annurev.bioeng.2.1.9 · Cited by 1,016
Self-citationLanger, R., & Peppas, N. (1983) · Journal of Macromolecular Science, Part C · doi:10.1080/07366578308079439 · Cited by 441
Self-citationSynthetic dynamic hydrogels promote degradation-independent in vitro organogenesis
Chrisnandy, A., Blondel, D., Rezakhani, S., Broguiere, N., & Lutolf, M. P. (2022) · Nature Materials · doi:10.1038/s41563-021-01136-7 · Cited by 237
Hydrogel network architecture design space: impact on mechanical and viscoelastic properties
Roca-Arroyo, A. F., Gutierrez-Rivera, J. A., Morton, L. D., & Castilla-Casadiego, D. A. (2025) · Gels · doi:10.3390/gels11080588 · Cited by 88
Metadata
- Authors
- Peppas, N. A., & Merrill, E. W.
- Venue
- Journal of Polymer Science: Polymer Chemistry Edition
- Publisher
- Wiley
- Published
- 1976-02
- Volume
- 14
- Issue
- 2
- Pages
- 441-457
- ISSN
- 0360-6376 (ISSN-L)
- 1542-9369
- OpenAlex
- W2163943874
- Cited by
- 366
- References
- 0
- FWCI
- 1.30
- Type
- journal article
- Language
- en
- Open access
- closed
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- Peppas, N. A., & Merrill, E. W. (1976). Poly(vinyl alcohol) hydrogels: Reinforcement of radiation‐crosslinked networks by crystallization. Journal of Polymer Science: Polymer Chemistry Edition. https://doi.org/10.1002/pol.1976.170140215
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
