Abstract In this study, nano-pores in cellulose acetate matrix were generated by utilizing glycerin with water pressure without metal salts as additive. When cellulose acetate polymer membrane fabricated with glycerin as an additive was exposed to water pressure as external physical force, nano-pore generation depends on the pressure-strength exerted on the membrane. On the principle of the nano-pore generation, the chains became weakened in the portion of the cellulose acetate, in which glycerin was surrounded by abundant water molecules, resulting in plasticization capable of easily generating nano-pores with water pressure. We found that pore size and numbers of nano-pore could be easily controlled by adjusting the water pressure. Thus, we succeeded in preparing the porous cellulose acetate with high porosity of 78.3%.Generated pores in cellulose acetate polymers were confirmed by scanning electron microscopy (SEM) images and porosimeter. The coordinate interactions between cellulose acetate (CA) polymers and glycerin were investigated by FT-IR and TGA analysis.

中文翻译：

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高度多孔且热稳定的醋酸纤维素利用水合甘油

摘要 本研究在无金属盐类添加剂的情况下，利用甘油在水压下在醋酸纤维素基质中形成纳米孔。当以甘油为添加剂制成的醋酸纤维素聚合物膜暴露于水压作为外部物理力时，纳米孔的产生取决于施加在膜上的压力强度。根据纳米孔的产生原理，醋酸纤维素部分的链变弱，其中甘油被大量水分子包围，导致塑化，可以很容易地在水压下产生纳米孔。我们发现通过调节水压可以很容易地控制孔径和纳米孔的数量。因此，我们成功地制备了具有 78.3% 高孔隙率的多孔醋酸纤维素。通过扫描电子显微镜 (SEM) 图像和孔隙率计证实了醋酸纤维素聚合物中产生的孔。通过 FT-IR 和 TGA 分析研究了醋酸纤维素 (CA) 聚合物和甘油之间的配位相互作用。