交联高聚物因吸收一定量溶剂而溶胀。当达到溶胀平衡时，其体积与溶胀前体积之比称为溶胀比。溶胀比与温度、压力、高聚物的交联度及溶质、溶剂的性质有关。
随着PEG臂数的增加，干胶的熔融峰顶温度下降，凝胶的溶胀比减小；
With the increase of arm numbers of PEG, the temperature of the melting peak of dried gels and the swelling ratio of hydrogels decrease;
胶平衡溶胀比随KGM 用量的增加而增加，而随STMP用量的增加而降低。
The equilibrium swelling ratio was increased with the increasing of KGM dosage and decreased with the increasing of STMP dosage.
凝胶的平衡溶胀比随着反应温度的升高逐渐增加，而KGM含量对凝胶平衡溶胀比影响不大；
The equilibrium swelling ratio of the complex gel was increased gradually with the increase of the reaction temperature, but KGM content had little effect on it.
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