Preparation and Characteristics of Wound Dressing with Weft-Knitted Fabric Coated with Chitosan

摘要

Synthetic materials used for medical purpose and biomechanics are defined as biomedical materials. In biomedical materials, fibrous textiles combine with biomedical engineering or tissue engineering to form medical articles. Tissue engineering significantly influences regenerated tissue or organs. As a result, porous materials are investigated for making a scaffold for cells to grow upon and adhere to the surface. Because knitted fabrics have porosity and softness resulting from their structure, they have been widely applied to tissue engineering. Woven samples with different structures and yarn conditions were coated with chitosan in this study. Additionally, the basic mechanical properties and release rate of weft-knitted fabrics are investigated. According to the results of experiments, the horizontal double tucking and horizontal-vertical double tucking structure of the samples had the largest tensile tenacity in the warp direction, the lowest tensile tenacity in the weft direction and higher porosity as well. However, the trend of structure plain, tuck, and vertical double tucking were opposite to the structure of horizontal double tucking and that of horizontal-vertical double tucking. After being coated, the fabric tenacity of group D slightly decreased approximately 3%. Moreover, the chitosan was released with two stages in day two and day six.