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2‐Dimensional Network Formation from a Graft Copolymer at the Air‐Water Interface
Author(s) -
de Samaniego M. Simon Saenz,
Miller A.F.
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200751019
Subject(s) - copolymer , ethylene oxide , materials science , molecule , chemical engineering , oxide , polymer chemistry , propylene oxide , network structure , photochemistry , composite material , chemistry , polymer , organic chemistry , computer science , machine learning , engineering , metallurgy
Summary: The UV induced cross‐linking of a well defined graft copolymer polynorbornene‐ g ‐poly(ethylene oxide) at the air‐water interface has been investigated. Network formation has been monitored qualitatively by observing changes in surface pressure with UV exposure time working under constant area conditions. Surface film concentration has been used as the design parameter to manipulate initial film organization, and consequently position of the functional groups. Exposure of the copolymer film to UV light at different surface concentrations in the liquid condensed region shows the closer the molecules pack together the faster the cross‐linking reaction, while no cross‐linking occurs when the molecules are far apart in the liquid expanded state.