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Towards Tailored Porous Polymers Using Solvent Effects in Catalytic Degradation.
- Source :
- Macromolecular Materials & Engineering; Dec2013, Vol. 298 Issue 12, p1344-1349, 6p
- Publication Year :
- 2013
-
Abstract
- The potential for tailored synthesis of porous materials using catalytic degradation of block copolymers has been shown, employing an adaptable one-pot method. Carefully selected solvent systems help to control the pore size and molecular weight of the product. In the degradation of PS-PB-PS, 2nd Generation Grubbs' catalyst creates scissions in the PB carbon-carbon double bonds resulting in the formation of a porous structure. Critically, methanol is used to maintain the integrity of the polymeric structure during this etching. Catalyst deactivation effected by methanol can be limited through using an excess of 1-hexene; thereby introducing a competitive metathesis process. Altering the ratio of the co-solvents employed further controls the degradation of PS-PB-PS and hence the resulting pore structures. [ABSTRACT FROM AUTHOR]
- Subjects :
- POROUS polymers
SOLVENTS
COPOLYMERS
CATALYSTS
METHANOL
METATHESIS reactions
Subjects
Details
- Language :
- English
- ISSN :
- 14387492
- Volume :
- 298
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Macromolecular Materials & Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 92867120
- Full Text :
- https://doi.org/10.1002/mame.201200418