Characterization of asymmetric membranes of cellulose acetate from recycling of residue corn stover for use in ultrafiltration

Química Nova

Universidade Federal de Uberlândia, Uberlândia, Brasil¹  Zeni, Mara¹  Duarte, Jocelei¹  Universidade Federal do Espírito Santo, São Mateus, Brasil¹  Sousa, Raquel Maria Ferreira de¹  Universidade Federal de Uberlândia, Ituiutaba, Brasil¹  Universidade de Caxias do Sul, Caxias do Sul, Brasil¹  Vieira, Júlia Graciele¹  Assunção, Rosana Maria Nascimento de¹  Ribeiro, Elaine Angélica Mundim¹  Meireles, Carla da Silva¹  Rodrigues Filho, Guimes¹ 

关键词: corn stover;    cellulose acetate;    ultrafiltration.;   

DOI  :  10.5935/0100-4042.20140070

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Cellulose acetates (CA) with different degrees of acetylation were synthesized from cellulose extracted from corn stover. Membranes were prepared for the ultrafiltration process with pure polymers and blend form of CA utilizing a dioxane/acetone system. The membranes were characterized according to their transport properties. The blend form materials presented the best results for application in ultrafiltration experiments. M-TAC/DAC (corn stover triacetate and diacetate) and M-TAC/DAC-Rho (corn stover triacetate and Rhodia diacetate) presented rejection to egg albumin protein of 87.39% and 80.50%, respectively. Thus, MWCO of 45 kDa was determined for these materials.

【 授权许可】

Unknown