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

Quimica nova

Assunção, Rosana Maria Nascimento de¹  Sousa, Raquel Maria Ferreira de²  Vieira, Júlia Graciele²  Ribeiro, Elaine Angélica Mundim²  Rodrigues Filho, Guimes²  Meireles, Carla da Silva³  Zeni, Mara⁴  Duarte, Jocelei⁴ 

[1] Universidade Federal de Uberlândia, Ituiutaba, Brasil;Universidade Federal de Uberlândia, Uberlândia, Brasil;Universidade Federal do Espírito Santo, São Mateus, Brasil;Universidade de Caxias do Sul, Caxias do Sul, Brasil

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】

CC BY