core-sheath type continuous fiber based on hyaluronic acid or its acylated c11-c18 derivative, method of preparing fibers, staple fibers, non-woven fabric, yarn, yarn formed of at least two fibers and braided fabric , interlaced or knitted

摘要

The present invention relates to continuous biodegradable core-sheath fibers comprising a combination of native and acylated c11-c18 hyaluronan or acylated c11-c18 hyaluronans. It further relates to a method of preparation and its use, especially for controlled release of the active agent. The fibers may further be processed as staple fibers, yarn, braided, interwoven, knitted and nonwoven fabrics.