Journal
CARBOHYDRATE POLYMERS
Volume 99, Issue -, Pages 158-165Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.08.057
Keywords
Hyaluronic acid; Sodium alginate; Two-active-layer composite membrane; Pervaporation; Ethanol dehydration
Categories
Funding
- National Science Fund for Distinguished Young Scholars [21125627]
- National Basic Research Program of China [2009CB623404]
- Program of Introducing Talents of Discipline to Universities [B06006]
- Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT), Tianjin Natural Science Foundation [10JCZDJC22600]
Ask authors/readers for more resources
The composite membranes with two-active-layer (a capping layer and an inner layer) were prepared by sequential spin-coatings of hyaluronic acid (HA) and sodium alginate (NaAlg) on the polyacrylonitrile (PAN) support layer. The SEM showed a mutilayer structure and a distinct interface between the HA layer and the NaAlg layer. The coating sequence of two-active-layer had an obvious influence on the pervaporation dehydration performance of membranes. When the operation temperature was 80 degrees C and water concentration in feed was 10 wt.%, the permeate fluxes of HA/Alg/PAN membrane and Alg/HA/PAN membrane were similar, whereas the separation factor were 1130 and 527, respectively. It was found that the capping layer with higher hydrophilicity and water retention capacity, and the inner layer with higher permselectivity could increase the separation performance of the composite membranes. Meanwhile, effects of operation temperature and water concentration in feed on pervaporation performance as well as membrane properties were studied. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available