Towards Tailored Porous Polymers Using Solvent Effects in Catalytic Degradation. Issue 12 (4th June 2013)

• Record Type: Journal Article
• Authors: Sedransk, Kyra L.; McGregor, James; Mitchell, Jonathan; Moggridge, Geoffrey D.
• Is Part Of: Macromolecular materials and engineering. Volume 298:Issue 12(2013:Dec.)
• Page Start: 1344
• Page End: 1349
• Publication Date: 2013-06-04
• Subjects: Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1002/mame.201200418
• Languages: English
• ISSNs: 1438-7492

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <sec id="mame201200418-sec-0001" sec-type="section"> <p>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.<inline-graphic xlink:href="ark:/27927/pgg3zmns81d" content-type="mame201200418-gra-0001" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></p> </sec> </abstract>