Studies on the PVA/P(AA-Co-AN/SiO2)/ PVA Composite Membranes for Pervaporation Dehydration of Methanol

Xiangchuan Pang, Xinhua Deng and Yuan Sun

Modern Applied Science, 2010, vol. 4, issue 11, 28

Abstract: Acrylic acid (AA) and acrylonitrile (AN) were synthesized by solution polymerization with nanometer SiO2. The copolymer solution was made into main body of the membranes, then composited with the polyvinyl alcohol (PVA) acetal membranes, to make the three-layer sandwich composite pervaporation membranes. The adsorption and the preferential sorption characteristics of the membranes were analyzed by studying swelling degree in different concentrations of methanol solution. Furthermore, the structure unit ratios of the P(AA-Co-AN/SiO2) membranes were analyzed by X-ray Photoelectron Spectroscopy (XPS). Pervaporation experiments were carried out using these membranes to separate methanol/water mixture, and results showed that selectivity of the membranes has increased with increasing the ratio of AN, but ?ux decreased. When the comonomer ratio AA/AN was 1/1, for the 98wt% mixtures at 60?, the separate factor was up to 1534, and the permeation ?ux was 583 g/(m2·h). Moreover, the composite membranes also showed good stability by a long-term test of the pervaporation experiments.

Date: 2010
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://ccsenet.org/journal/index.php/mas/article/download/8035/6038 (application/pdf)
https://ccsenet.org/journal/index.php/mas/article/view/8035 (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ibn:masjnl:v:4:y:2010:i:11:p:28

Access Statistics for this article

More articles in Modern Applied Science from Canadian Center of Science and Education Contact information at EDIRC.
Bibliographic data for series maintained by Canadian Center of Science and Education ().