壳聚糖纤维/壳聚糖/海藻酸钠水凝胶溶胀性能与抑菌性能

Preparation and Preperties of Chitosan Fiber/Chitosan/Alginate Hydrogel

制备了壳聚糖(CS)/海藻酸钠(SA)复合水凝胶,并通过加入吸水性壳聚糖长纤维、45%壳聚糖水刺无纺布、80%壳聚糖水刺无纺布、100%壳聚糖水刺无纺布、100%壳聚糖针刺无纺布这五种纤维,增强复合水凝胶的力学性能,探究了复合水凝胶的吸水溶胀性能与抑菌性能。结果表明,加入纤维后水凝胶在蒸馏水中的溶胀比明显降低,在碱性环境中,水凝胶的溶胀比显著上升,在偏中性环境中,水凝胶的溶胀比最低;加入纤维后,复合水凝胶仍具有一定的抑菌性,无纤维添加的水凝胶呈现出的抑菌能力一般,而加入了吸水性壳聚糖长纤维的具有最佳的抑菌性能。

Pick to adopt chemical crosslinked chitosan(CS)/sodium alginate(SA)composite hydrogels,and by adding water imbibition of chitosan long fiber,45%chitosan spunlace nonwoven spunlace nonwovens,80%,100%chitosan spunlace nonwoven,100%chitosan acupuncture non-woven these five kinds of fiber,enhance the mechanical properties of composite hydrogel,explore the absorbent composite hydrogel swelling properties,mechanical properties,antibacterial properties.The results showed that the swelling ratio of hydrogel in distilled water was significantly decreased after adding fiber.In alkaline environment,the swelling ratio of hydrogel was significantly increased.In neutral environment,the swelling ratio of hydrogel was the lowest.The mechanical properties of the composite hydrogel increased significantly after fiber was added.After the addition of fiber,the composite hydrogel still had some bacteriostasis,and the hydrogel without fiber showed a general bacteriostasis,while the one with the addition of absorbent chitosan long fiber had the best bacteriostasis.