Journal
ACS MACRO LETTERS
Volume 2, Issue 7, Pages 617-620Publisher
AMER CHEMICAL SOC
DOI: 10.1021/mz400192f
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Funding
- Dow Chemical Company
- National Science Foundation [DMR-1006370]
- NSF
- E.I. DuPont de Nemours Co.
- Northwestern University
- U.S. DOE [DE-AC02-06CH11357]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1006370] Funding Source: National Science Foundation
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Using a simultaneous block polymerization/in situ cross-linking from a heterofunctional initiator approach, we produced a nanostructured and cross-linked block polymer in a single step from a ternary mixture of monomers and used it as a precursor for a cross-linked nanoporous material. Using 2-(benzylsulfanylthiocarbonylsulfanyl)ethanol as a heterofunctional initiator, simultaneous ring-opening transesterification polymerization of D,L-lactide in the presence of tin 2-ethylhexanoate as a catalyst and reversible addition-fragmentation chain transfer polymerization of styrene at 120 degrees C produced a polylactide-b-polystyrene (PLA-b-PS) block polymer. Incorporation of divinylbenzene in the polymerization mixture allowed in situ cross-linking during the simultaneous block polymerization to result in the cross-linked block polymer precursor in one step. This material was converted into cross-linked nanoporous polymer by etching PLA in a basic solution.
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