Journal
POLYMER INTERNATIONAL
Volume 68, Issue 6, Pages 1064-1073Publisher
WILEY
DOI: 10.1002/pi.5796
Keywords
block copolymer; blends; morphology; self-assembly; crystallization
Categories
Funding
- Deakin University Postgraduate Research Scholarship (DUPRS)
Ask authors/readers for more resources
An approach to achieve confined crystallization of ferroelectric semicrystalline poly(vinylidene fluoride) (PVDF) was investigated. A novel polydimethylsiloxane-block-poly(methyl methacrylate)-block-polystyrene (PDMS-b-PMMA-b-PS) triblock copolymer was synthesized by the atom-transfer radical polymerization method and blended with PVDF. Miscibility, crystallization and morphology of the PVDF/PDMS-b-PMMA-b-PS blends were studied within the whole range of concentration. In this A-b-B-b-C/D type of triblock copolymer/homopolymer system, crystallizable PVDF (D) and PMMA (B) middle block are miscible because of specific intermolecular interactions while A block (PDMS) and C block (PS) are immiscible with PVDF. Nanostructured morphology is formed via self-assembly, displaying a variety of phase structures and semicrystalline morphologies. Crystallization at 145 degrees C reveals that both alpha and beta crystalline phases of PVDF are present in PVDF/PDMS-b-PMMA-b-PS blends. Incorporation of the triblock copolymer decreases the degree of crystallization and enhances the proportion of beta to alpha phase of semicrystalline PVDF. Introduction of PDMS-b-PMMA-b-PS triblock copolymer to PVDF makes the crystalline structures compact and confines the crystal size. Moreover, small-angle X-ray scattering results indicate that the immiscible PDMS as a soft block and PS as a hard block are localized in PVDF crystalline structures. (c) 2019 Society of Chemical Industry
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available