The results showed that the porosity and water capacity of collagen sponges decrease by adding chitosan, increase by adding chondroitin sulfate, but no effect by heparin.

• 结果表明：添加壳聚糖后胶原海绵的孔隙率和吸水率下降，添加硫酸软骨素后上升，而添加肝素后无明显变化。