将1%壳聚糖温敏凝胶经37 ℃静置成胶以后,缓缓置于液氮中进行冷冻,再迅速转到低温冷冻干燥机中进行冷冻干燥。干燥结束后,用镊子取出一部分黏在导电胶上,经喷金后用SEM观察水凝胶显微结构。
After standing at 37 ℃, the 1% chitosan temperaturesensitive gel was slowly frozen in liquid nitrogen, and then quickly transferred to a low temperature freeze-drying machine for freeze-drying.After spraying gold, the microstructure of the hydrogel was observed by SEM.