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Ting Yang, Michael Malkoch and Anders Hult The influence of diffusion time on the properties of sequential interpenetrating PEG hydrogels Journal of Polymer Science Part A: Polymer Chemistry 51

Version of Record online: 24 DEC 2012 | DOI: 10.1002/pola.26506

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Sixteen different sequential interpenetrating network (SeqIPN) hydrogels based on purely PEG systems were efficiently fabricated via UV initiated thiol-ene coupling chemistry. These covered both loosely (8 kDa) as well as densely crosslinked (2 kDa) systems and capitalized on determining the impact of diffusion time of secondary network precursors on the final swelling and mechanical properties of SeqIPNs. The results within detail the power of diffusion time as an imperative parameter to accurately control the final properties of SeqIPN hydrogels based on PEG systems.

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