Hydrogel was moderate crosslinded, branched polymers, widely studied and applied because of the ability to absorb large quantities of water, swell quickly, soft, elastine and biologic consistence.

水凝胶是一种具有三维网络结构的新型功能高分子材料，以其含水量高、溶胀快、柔软、具有橡胶般的粘稠性和良好的生物相容性等优点得到广泛应用及研究。

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