Quimica nova | |
Characterization of asymmetric membranes of cellulose acetate from recycling of residue corn stover for use in ultrafiltration | |
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
【 预 览 】
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RO201902011662197ZK.pdf | 891KB | download |