多孔高吸水性树脂孔结构的图像分析法

In this paper,an innovative method to study the structure of the porous superabsorbent polymers was studied.By using the Image J image processing software,the SEM pictures of the polymers were transformed into a binary sketch image.The structure parameters of the pores could also be calculated with the aid of the software.According to the principle of differential box counting,combined with the MATLAB programming,the fractal dimension of the porous superabsorbent polymers could be obtained through the binary sketch image.The calculated fractal dimension could be used to express the regularity of the complicated structure of the porous superabsorbent polymers.Via the above process,the influence of the pre-swelling time for the porous superabsorbent polymers,prepared through the cryogenic induced phase separation method,on the structure of the modified polymer was discussed.

多孔高吸水性树脂孔结构的体视学表征

探索了一种对多孔高吸水性树脂的孔结构进行定量表征的研究方法。在用扫描电镜(SEM)对发泡法制备的多孔高吸水性树脂的孔结构进行表征的基础上,将SEM照片转换为灰度图像,利用体视学中的禁线法则和德莱塞定律,通过关联测格覆盖得到了多孔高吸水性树脂的孔面积、孔周长、孔隙率等结构参数。在此基础上,利用分形几何的研究方法,得到了多孔高吸水性树脂的分形维数与形状因子等参数。通过所建立的表征方法,讨论了不同致孔剂加入量对多孔高吸水性树脂结构的影响。