Hydrogen bonded block copolymer systems : from microphase separation in solid state to self-assembly in aqueous solutions

Guo, Qipeng, Hameed, Nishar and Salim, Nisa V. 2011, Hydrogen bonded block copolymer systems : from microphase separation in solid state to self-assembly in aqueous solutions, in Proceedings of the 32nd Australasian Polymer Symposium, [The Symposium], [Sydney, N. S. W.].

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Title Hydrogen bonded block copolymer systems : from microphase separation in solid state to self-assembly in aqueous solutions
Author(s) Guo, Qipeng
Hameed, Nishar
Salim, Nisa V.
Conference name Australasian Polymer Symposium (32nd : 2011 : Sydney, N. S. W.)
Conference location Sydney, N. S. W.
Conference dates 13-16 Feb. 2011
Title of proceedings Proceedings of the 32nd Australasian Polymer Symposium
Editor(s) [Unknown]
Publication date 2011
Conference series Australasian Polymer Symposium
Publisher [The Symposium]
Place of publication [Sydney, N. S. W.]
Summary Block copolymer systems with hydrogen bonding interactions have received relatively little attention. Recently, we have investigated the self-assembly and phase separation in such block copolymer systems with an attempt to elucidate the role of hydrogen bonding interactions both theoretically and experimentally [1-4]. In A-b-B/C diblock copolymer/homopolymer systems, the phase behavior was theoretically analyzed according to the random phase approximation and correlated with hydrogen bonding interactions in terms of the difference in inter-association constants (K). To examine how the hydrogen bonding determines the self-assembly and morphological transitions in these systems, we have introduced the K values as a new variable into the phase diagram which we established for the first time (Fig. 1). Multiple vesicular morphologies were formed in aqueous solution of A-b-B/A-b-C diblock copolymer complexes of PS-b-PAA and PS-b-PEO. Interconnected compound vesicles (ICCVs) were observed for the first time as a new morphology (Fig. 2), along with other aggregated nanostructures including vesicles, multilamellar vesicles, thick-walled vesicles and irregular aggregates. Complexation of two amphiphilic diblock copolymers provides a viable approach to vesicles in aqueous media.
Language eng
Field of Research 091209 Polymers and Plastics
Socio Economic Objective 870303 Polymeric Materials (e.g. Paints)
HERDC Research category E3 Extract of paper
Persistent URL http://hdl.handle.net/10536/DRO/DU:30042285

Document type: Conference Paper
Collection: Centre for Material and Fibre Innovation
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