Abstract
The morphology and physical properties of a pentablock copolymer (PBC) were investigated as a function of sulfonation or ion-exchange capacity (IEC). This material is comprised t-butylstyrene (tBS), hydrogenated isoprene (HI), sulfonated polystyrene (sPS), and polystyrene (PS). Thermally reversible crosslinks are created with tBS, which is dispersed within a rubbery phase of HI, sPS, and PS. A morphology change was observed upon sulfonating PBC. This created abrupt material changes such as water swelling, proton conductivity, and methanol transport at an IEC greater than one. Water, proton, and methanol transport are associated with sPS domains. Gas transport occurs mainly through more permeable HI and tBS phases that were disrupted with increasing IEC. The permeability ( P) was modeled using a lamellar morphology. Ion and methanol transport occurred via sulfonated domains. Finally, a structure-property and transport property correlation of this multi-block PBC ionomer is discussed within this paper.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 179-187 |
| Number of pages | 9 |
| Journal | Journal of Membrane Science |
| Volume | 464 |
| DOIs | |
| State | Published - Aug 15 2014 |
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Keywords
- Ionomer
- Morphology
- Proton conductivity
- Transport
ASJC Scopus subject areas
- Biochemistry
- Materials Science(all)
- Physical and Theoretical Chemistry
- Filtration and Separation
Cite this
Structure, physical properties, and molecule transport of gas, liquid, and ions within a pentablock copolymer. / Fan, Yanfang; Zhang, Mingqiang; Moore, Robert B.; Cornelius, Christopher J.
In: Journal of Membrane Science, Vol. 464, 15.08.2014, p. 179-187.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Structure, physical properties, and molecule transport of gas, liquid, and ions within a pentablock copolymer
AU - Fan, Yanfang
AU - Zhang, Mingqiang
AU - Moore, Robert B.
AU - Cornelius, Christopher J
PY - 2014/8/15
Y1 - 2014/8/15
N2 - The morphology and physical properties of a pentablock copolymer (PBC) were investigated as a function of sulfonation or ion-exchange capacity (IEC). This material is comprised t-butylstyrene (tBS), hydrogenated isoprene (HI), sulfonated polystyrene (sPS), and polystyrene (PS). Thermally reversible crosslinks are created with tBS, which is dispersed within a rubbery phase of HI, sPS, and PS. A morphology change was observed upon sulfonating PBC. This created abrupt material changes such as water swelling, proton conductivity, and methanol transport at an IEC greater than one. Water, proton, and methanol transport are associated with sPS domains. Gas transport occurs mainly through more permeable HI and tBS phases that were disrupted with increasing IEC. The permeability ( P) was modeled using a lamellar morphology. Ion and methanol transport occurred via sulfonated domains. Finally, a structure-property and transport property correlation of this multi-block PBC ionomer is discussed within this paper.
AB - The morphology and physical properties of a pentablock copolymer (PBC) were investigated as a function of sulfonation or ion-exchange capacity (IEC). This material is comprised t-butylstyrene (tBS), hydrogenated isoprene (HI), sulfonated polystyrene (sPS), and polystyrene (PS). Thermally reversible crosslinks are created with tBS, which is dispersed within a rubbery phase of HI, sPS, and PS. A morphology change was observed upon sulfonating PBC. This created abrupt material changes such as water swelling, proton conductivity, and methanol transport at an IEC greater than one. Water, proton, and methanol transport are associated with sPS domains. Gas transport occurs mainly through more permeable HI and tBS phases that were disrupted with increasing IEC. The permeability ( P) was modeled using a lamellar morphology. Ion and methanol transport occurred via sulfonated domains. Finally, a structure-property and transport property correlation of this multi-block PBC ionomer is discussed within this paper.
KW - Ionomer
KW - Morphology
KW - Proton conductivity
KW - Transport
UR - http://www.scopus.com/inward/record.url?scp=84899884460&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84899884460&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2014.04.011
DO - 10.1016/j.memsci.2014.04.011
M3 - Article
AN - SCOPUS:84899884460
VL - 464
SP - 179
EP - 187
JO - Jornal of Membrane Science
JF - Jornal of Membrane Science
SN - 0376-7388
ER -