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To determine the water uptake, volumetric changes, and diffusion kinetics of polymethacrylate networks synthesized from varying ratios of bis-GMA and TEGDM.

March 1, 1987Journal of Biomedical Materials Research

Water sorption of polymethacrylate networks: Bis‐GMA/TEGDM copolymers

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To determine the water uptake, volumetric changes, and diffusion kinetics of polymethacrylate networks synthesized from varying ratios of bis-GMA and TEGDM.
Synthesized polymethacrylate networks across multiple bis-GMA and TEGDM ratios using either thermal polymerization with benzoyl peroxide or photopolymerization (wavelength > 400 nm) with camphoroquinone.
Measured equilibrium water sorption, evaluated volumetric changes, and calculated diffusion coefficients across temperatures from 24 °C to 60 °C.
Water sorption increased from 3% to 6% as the proportion of TEGDM rose from 0 to 1.0, with intermediate compositions absorbing less water than predicted by the law of mixtures.
Water diffusion in photopolymerized copolymers conformed to the Arrhenius equation across 24 °C to 60 °C, yielding an activation energy of 42–46 kJ/mol and a pre-exponential factor D₀ of 0.13 cm²/s.

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Implication

Laboratory experiment demonstrates composition-dependent water uptake in bis-GMA copolymers, highlighting non-linear sorption behavior in dental resins.

Cite This Study

Kalachandra et al. (1987) studied this question.

synapsesocial.com/papers/6a717ba626a7f98052ddd122 https://doi.org/10.1002/jbm.820210306

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Implication

Laboratory experiment demonstrates composition-dependent water uptake in bis-GMA copolymers, highlighting non-linear sorption behavior in dental resins.

Water sorption of polymethacrylate networks: Bis‐GMA/TEGDM copolymers

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Discussion

Implication

Cite This Study

Water sorption of polymethacrylate networks: Bis‐GMA/TEGDM copolymers

Key Points

Discussion

Implication

Cite This Study

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