Friday, February 12, 2010

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Photo-Cross-Linked PDMS(star)-PEG Hydrogels: Synthesis, Characterization, and Potential Application for Tissue Engineering Scaffolds.
February 12, 2010 at 8:21 AM

Photo-Cross-Linked PDMS(star)-PEG Hydrogels: Synthesis, Characterization, and Potential Application for Tissue Engineering Scaffolds.

Biomacromolecules. 2010 Feb 10;

Authors: Hou Y, Schoener CA, Regan KR, Munoz-Pinto D, Hahn MS, Grunlan MA

Inorganic-organic hydrogels with tunable chemical and physical properties were prepared from methacrylated star polydimethylsiloxane (PDMS(star)-MA) and diacrylated poly(ethylene glycol) (PEG-DA) for use as tissue engineering scaffolds. A total of 18 compositionally unique hydrogels were prepared by photo-cross-linking, varying weight ratios of PEG-DA and PDMS(star)-MA of different molecular weights (M(n)): PEG-DA (M(n) = 3.4k and 6k g/mol) and PDMS(star)-MA (M(n) = 1.8k, 5k, and 7k g/mol). Introduction of PDMS(star)-MA caused formation of discrete PDMS-enriched microparticles dispersed within the PEG matrix. ! The swelling ratio, mechanical properties in tension and compression, nonspecific protein adhesion, controlled introduction of bioactivity, and cytotoxicity of hydrogels were studied. This library of inorganic-organic hydrogels with tunable properties provides a useful platform to study the effect of scaffold properties on cell behavior.

PMID: 20146518 [PubMed - as supplied by publisher]

 

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