Nanocomposite polyvinyl alcohol fibers for medical applications

摘要

It was investigated how the HAp and SiO_2 nanoadditives introduced into the material of fibers made from polyvinyl alcohol (PVA) affects the structure, sorption, and strength properties of those fibers. The conditions of the fibers' production were selected with the aim of obtaining the nanocomposite PVA fibers which would be soluble in water and in body fluids. These fibers are intended to be used for the production of a biocomposite with another biodegradable polymer. The determination was made of the effect of two different deformations applied at the fiber production stage on the structure and properties of the fibers. Using the WAXS method, the supramolecular structure of the fibers was determined. Nanocomposite PVA fibers obtained in this work have an oriented crystalline structure with a rather low level of crystallinity, reaching 40, and a relatively high orientation index of crystallites: 0.48-0.54.