| 초록 |
Poly(vinyl alcohol)(PVA) is of particular interest, since it is highly soluble in water, biocompatible, easy to process, and optically transparent. However, in order to use in the area of biomedical application, the stability of PVA should be controlled in aqueous media, such as by cross-linking either chemically or physically. In this study, we attempt to introduce new PVA/poly(acrylic acid) (PAA) composite hydrogel nanofibers incorporating POSS prepared by electrospinning followed by heat-treatment. The obtained hybrid PVA/PAA/POSS hydrogel nanofibers were characterized by FT-IR, XRD, SEM-EDS, and tensile test. The heat-treated hybrid PVA/PAA/POSS composite hydrogel nanofibers exhibited dramatic increase in water resistance as well as mechanical properties depending on POSS contents. This was due to both thermally cross-linked effects between –OH groups in PVA and –COOH groups in PAA and the presence of the bulky and hybrophobic POSS nanoparticles. |
