Hydrogen bonding interactions in poly(ε-caprolactone-dimethyl siloxane-ε-caprolactone)/poly(hydroxyether of bisphenol A) triblock copolymer/homopolymer blends and the effect on crystallization, microphase separation and self-assembly

Salim, Nisa V., Fox, Bronwyn L. and Hanley, Tracey L. 2015, Hydrogen bonding interactions in poly(ε-caprolactone-dimethyl siloxane-ε-caprolactone)/poly(hydroxyether of bisphenol A) triblock copolymer/homopolymer blends and the effect on crystallization, microphase separation and self-assembly, European polymer journal, vol. 67, pp. 12-20, doi: 10.1016/j.eurpolymj.2015.03.046.

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Title Hydrogen bonding interactions in poly(ε-caprolactone-dimethyl siloxane-ε-caprolactone)/poly(hydroxyether of bisphenol A) triblock copolymer/homopolymer blends and the effect on crystallization, microphase separation and self-assembly
Author(s) Salim, Nisa V.
Fox, Bronwyn L.
Hanley, Tracey L.
Journal name European polymer journal
Volume number 67
Start page 12
End page 20
Total pages 9
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-06
ISSN 0014-3057
Keyword(s) Science & Technology
Physical Sciences
Polymer Science
Polymer blends
Crystallization
Self-assembly
Microphase separation
Block copolymer
BLOCK-COPOLYMER
DIBLOCK COPOLYMERS
POLY(HYDROXY ETHER
MISCIBILITY
MORPHOLOGY
POLYPROPYLENE
HOMOPOLYMER
BREAKOUT
VESICLES
BEHAVIOR
Summary This study investigated the self-assembled microphase separated morphologies that are obtained in bulk, by the complexation of a semicrystalline poly(ε-caprolactone-dimethyl siloxane-ε-caprolactone) (PCL-PDMS-PCL) triblock copolymer and a homopolymer, poly(hydroxyether of bisphenol A) (PH) in tetrahydrofuran (THF). In these blends, microphase separation takes place due to the disparity in intermolecular interactions; specifically, the homopolymer interacts with PCL blocks through hydrogen bonding interactions. The crystallization, microphase separation and crystalline structures of a triblock copolymer/homopolymer blends were investigated. The phase behavior of the complexes was investigated using small-angle X-ray scattering and transmission electron microscopy. At low PH concentrations, PCL interacts relatively weakly with PH, whereas in complexes containing more than 50 wt% PH, the PCL block interacts significantly with PH, leading to the formation of composition-dependent nanostructures. SAXS and TEM results indicate that the lamellar morphology of neat PCL-PDMS-PCL triblock copolymer changes into disordered structures at 40-60 wt% PH. Spherical microdomains were obtained in the order of 40-50 nm in complexes with 80 wt% PH. At this concentration, the complexes show a completely homogenous phase of PH/PCL, with phase-separated spherical PDMS domains. The formation of these nanostructures and changes in morphology depends on the strength of hydrogen bonding between PH/PCL blocks and also the phase separated PDMS blocks.
Language eng
DOI 10.1016/j.eurpolymj.2015.03.046
Field of Research 0303 Macromolecular And Materials Chemistry
0904 Chemical Engineering
0912 Materials Engineering
091209 Polymers and Plastics
Socio Economic Objective 870303 Polymeric Materials (e.g. Paints)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30078056

Document type: Journal Article
Collection: Institute for Frontier Materials
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