Dielectric Response Triggered by a Non-ferroelectric Phase Transition in Poly(Vinylidene Fluoride)/Poly(Ethylene Glycol)/Halloysite Composites. Issue 12 (21st August 2020)

• Record Type: Journal Article
• Authors: Wang, Wei; Li, Hairong; Zhao, Jinchao; Tu, Junyang; Wu, Wenqi; Luo, Zhiping; Jiang, Ming; Huang, Leping
• Is Part Of: Journal of macromolecular science. Volume 59:Issue 12(2020)
• Page Start: 867
• Page End: 877
• Publication Date: 2020-08-21
• Subjects: dielectric response -- halloysite -- non-ferroelectric phase transition -- polarization -- polyethylene glycol -- poly(vinylidene fluoride); Polymerization -- Periodicals; Polymers -- Periodicals; 530.413
• DOI: 10.1080/00222348.2020.1809190
• Languages: English
• ISSNs: 0022-2348

Abstract

Abstract: Thermoresponsive dielectric materials have attracted the interest of researchers as they exhibit very important application prospects in stimuli-responsive smart devices. In this contribution polyethylene glycol (PEG), impregnated in halloysite nanotubes (HNTs), was incorporated into poly(vinylidene fluoride) (PVDF) for tailoring the thermoresponsive dielectric properties based on a non-ferroelectric phase transition. The PVDF/PEG/HNTs displayed a remarkable rise of dielectric constant between 20 and 30 °C. The mechanism is related to the enhanced orientational polarization effect triggered by the solid–liquid phase transition of the PEG. This make it possible to design stimuli-responsive smart materials through a simple, low-cost and efficient strategy. The present work provides an alternative and innovative routine for tailoring thermal-induced dielectric behaviors via a non-ferroelectric phase transition by introducing PEG into a high-dielectric-constant polymer matrix.