图 1. 3种交联度CMCS/OSA水凝胶的结构.
Fig 1 Structure of three kinds of CMCS/OSA hydrogels with different crosslinking degrees
上：肉眼观；下：SEM × 400；从左至右分别为氨基与醛基比2∶1、1∶1、1∶2。
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