| Title of Article |
TEMPERATURE-ENHANCED WATER SELECTIVITY IN POLYVINYL ALCOHOL MIXED MATRIX MEMBRANES FILLED WITH POLY(2-hydroxyethylmethacrylate)-GRAFTED MESOPOROUS SILICA NANOPARTICLES (PVA/MSNs-g-PHEMA MMMs) |
| Date of Acceptance |
13 October 2020 |
| Journal |
| Title of Journal |
Separation and Purification Technology |
| Standard |
SCOPUS |
| Institute of Journal |
ELSEVIER |
| ISBN/ISSN |
Elsevier |
| Volume |
2021 |
| Issue |
257 |
| Month |
February |
| Year of Publication |
2021 |
| Page |
1-13 |
| Abstract |
Temperature-enhanced water selectivity of MMMs was demonstrated for the dehydration pervaporation of
ethanol solutions. The MMMs synthesized from Polyvinyl alcohol embedded with Poly(2-
hydroxyethylmethacrylate)-grafted mesoporous silica nanoparticles revealed a concomitant increasing of the
water selectivity and the water flux upon raising feed solution temperature from 30 ◦C to 60 ◦C. This phenomenon is rarely observed in PVA-based MMMs in which the water selectivity usually declines with increasing
feed temperature. Remarkably, the temperature enhancing effect was intensified with increasing amount of the
grafted PHEMA on MSNs. The enhancement of the water selectivity stems from the superior water absorption
selectivity to the water diffusion selectivity because the water absorption by the MMMs is endothermic which
gives rise to the favorable absorption as raising feed solution temperature. The incorporation of MSNs-g-PHEMA
resulted in improving of both flux and the water selectivity because the mesoporous structure of MSNs-g-PHEMA
provides unrestricted and hydrophilic paths for the water permeation. |
| Keyword |
Pervaporation, Mixed matrix membrane, Polyvinylalcohol, Poly(2-hydroxyethylmethacrylate), Mesoporous silica, Grafting |
| Author |
|
| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
true |
| Attach file |
|
| Citation |
0
|
|
|
Publication
Journal Publication
ไทย