SEM result showed that the sample had uniform phase distribution and smooth surface at dried state as well as interpenetrate network structure at hydrogel state. It was seen from the swell ing behavior curves that groups T1, T2 and T3 swelled rapidly within 10-30 minutes, and formed elastic composite hydrogel pipes. In addition, the expanding ratio of inner and outer diameter of the tube was 20%-30% and 100%-120% with swell ing, respectively. The equil ibrium water content of the hydrogel pipes increased with increase of collagen composition. Three groups of samples were immerged in PBS solution contained 2 mg/mL lysozyme at 37 for 1 month, their nozzle cracked, their wall became thin and more transparent. And also, there was small floc deposited on the tube surface.

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SIPHUNCULATA; ANOPLURA：虱目

分泌管;體縱管 siphuncle | 虱目 SIPHUNCULATA; ANOPLURA | 有吸管狀口器的 siphunculate

siphunculate：有吸管狀口器的

虱目 SIPHUNCULATA; ANOPLURA | 有吸管狀口器的 siphunculate | 星口動物門 SIPUNCULIDEA