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. 2009 Sep 11;10(9):4033–4065. doi: 10.3390/ijms10094033

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© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.

This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 16. — Morphologies of the cross-section (cryo-fracture) of a polyether polyurethane/glass fiber composites after soaked in the H₂O₂/CoCl₂ solution for 56 weeks (A). Microporosity forms in the polymer matrix due to oxidation. For comparison, the cross-section morphology of pure polyurethane samples that were soaked in H₂O₂/CoCl₂ solution for 56 weeks is showed in B.