Abstract
Macroporous poly(methyl methacrylate) scaffolds with a well-interconnected pore architecture were coated with poly(2-hydroxyethyl acrylate) following a particular protocol of plasma-induced polymerisation. Plasma-polymerised PHEA (plPHEA) was grafted onto two macroporous poly(methyl methacrylate) scaffolds with varying cross-linking density showing significant differences in the interpenetration of the coating and the PMMA substrate. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) proved that the surface of the pore structure in the whole volume of the sample was coated. The stability of the plPHEA coating was studied by extraction with distilled water at different temperatures. After the extraction, these samples were observed by SEM and analysed by differential scanning calorimetry (DSC) and FTIR showing that only in very drastic conditions plPHEA suffers hydrolytic degradation.
Published Version
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