1. METHODS: Acetic acid solution was added into chitosan to prepare 8% chitosan acetic acid hydrosol, which was then stayed for one day. Flowing the immersion into the hydrosol and immediate dislodgement, plastic tube was soaked in 1 mol/L sodium hydroxide for 3 minutes. Hydrosol out of the tube etiolated and coagulated into jells, the tube was removed when the jells were semi-dried.
利用乙酸溶液制备8%壳聚糖乙酸水溶胶，溶胶放置1 d，将硬塑料管浸入溶胶后迅速取出放入1 mol/L氢氧化钠液内3 min，见管外溶胶变白凝固成胶冻状，取出后晾到五分干后轻轻退下内管，晾干后即成为壳聚糖导管。