Caracterização de membranas assimétricas de acetato de celulose produzidas a partir do aproveitamento do resíduo da palha de milho para uso em ultrafiltração

Química Nova

Elaine Angélica Mundim Ribeiro²  Guimes Rodrigues Filho²  Júlia Graciele Vieira²  Raquel Maria Ferreira De Sousa²  Rosana Maria Nascimento De Assunção¹  Carla Da Silva Meireles¹  Jocelei Duarte¹  Mara Zeni¹ 

[1] ,Universidade Federal de Uberlândia Instituto de Química Uberlândia MG ,Brasil

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

DOI  :  10.5935/0100-4042.20140070

来源: SciELO

【 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】

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