Browse

Interfacial Roughening Induced by the Reaction of End-Functionalized Polymers at a PS/P2VP Interface: Quantitative Analysis by DSIMS

DC Field Value Language
dc.contributor.authorKim, Bumjoon J.-
dc.contributor.authorKang, Huiman-
dc.contributor.authorChar, Kookheon-
dc.contributor.authorKatsov, Kirill-
dc.contributor.authorFredrickson, Glenn H.-
dc.contributor.authorKramer, Edward J.-
dc.date.accessioned2009-07-20-
dc.date.available2009-07-20-
dc.date.issued2005-06-11-
dc.identifier.citationMacromolecules, 2005, 38, 6106en
dc.identifier.issn0024-9297 (print)-
dc.identifier.issn1520-5835 (online)-
dc.identifier.urihttps://hdl.handle.net/10371/5734-
dc.description.abstractThe reaction of end-functionalized polymer chains at the melt interface between the immiscible polymers, polystyrene (PS) and poly(2-vinylpyridine) (P2VP), has been investigated experimentally. Diblock copolymers were formed at the interface by the reaction of amine end-functionalized deuterated PS with anhydride end-functionalized P2VP. The normalized interfacial excess (ξ = z*PS/Rg,PS) of the deuterium-labeled block copolymer was determined using dynamic secondary ion mass spectrometry (DSIMS). As ξ increases, the interfacial tension decreases to zero, at which point the interface becomes unstable, inducing interfacial roughening by hydrodynamic flow of the homopolymers. Roughening was detected using scanning force microscopy (SFM) after removing the polystyrene with a selective solvent. Evidence of the interfacial instability was also observed by cross-sectional transmission electron microscopy (TEM). The length scale of the corrugation was around 15 nm, which was comparable to the diameter of diblock copolymer emulsified droplets found near the interface. For a short symmetric block copolymer (PS (4K)−P2VP (4K)), we observed that the interfacial roughening takes place above ξ = 0.9, in good agreement with the predictions of self-consistent mean-field theory.en
dc.description.sponsorshipWe acknowledge the support of the UCSB Materials Research Lab. (NSF-DMR-MRSEC Grant DMR00-80034). The skillful help of Dr. Tom Mates and Dr. Krystyna Brzezinska of this facility as well as useful discussions with Dr. Ryan Hayward and Dr. Seung-Heon Lee is greatly appreciated.en
dc.language.isoen-
dc.publisherAmerican Chemical Societyen
dc.titleInterfacial Roughening Induced by the Reaction of End-Functionalized Polymers at a PS/P2VP Interface: Quantitative Analysis by DSIMSen
dc.typeArticleen
dc.contributor.AlternativeAuthor김범준-
dc.contributor.AlternativeAuthor강휘만-
dc.contributor.AlternativeAuthor차국헌-
dc.identifier.doi10.1021/ma047378s-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
Files in This Item:
There are no files associated with this item.
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse