The effects of hot pressing on the swelling behavior of P(MMA-co-NVP) hydrogel discs

• Main Authors: Smith, J., Radzi, Z., Czernuszka, J.
• Format: Article
• Language: English
• Published: 2015
• Subjects: RK Dentistry
• Online Access: http://eprints.um.edu.my/14139/1/effects_of_hotpressing.pdf; http://eprints.um.edu.my/14139/; http://onlinelibrary.wiley.com/doi/10.1002/pen.24067/abstract

Compression of dehydrated P(MMA-co-NVP) hydrogel at the glass transition temperature (161 degrees C) results in discs which exhibit orthotropic expansion when hydrated in water. It has been found that the expansion is nonuniform, with an outer annulus expanding more rapidly than the inner core. This...