The role of halloy site on crystallinity, ion conductivity, thermal and mechanical properties of poly(ethylene-oxide)/halloysite nanocomposites

Yang, Kuo; Chi, Qianwen; Wang, Xingyuan; Jiang, Yinshan; Li, Fangfei; Xue, Bing

doi:10.1007/s10965-019-1803-8

Cited by 14 publications

(9 citation statements)

References 47 publications

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“…The blending process not only suppresses the unwanted properties of individual polymers but also enhances the required superior properties that can be engineered through an appropriate compositional weight ratio of the blended polymers [14,17,18,35,36]. The addition of nano-sized fillers in the host polymer matrix is also a widely popular and efficient strategy to get improved physicochemical properties of the prepared NSPE materials [6,10,18,22,30,37]. It has been observed that the nanofiller increases free volume in the polymeric composite material and creates additional favourable ion conductive paths due to which ions mobility increases [5,10].…”

Section: Introductionmentioning

confidence: 99%

“…It has been observed that the nanofiller increases free volume in the polymeric composite material and creates additional favourable ion conductive paths due to which ions mobility increases [5,10]. Further, numerous studies have also validated the fact that the nanofillers decrease the crystalline content of the semicrystalline polymer matrix and thereby make it more fascinating ion-conductive amorphous host medium [22,23,37].…”

Section: Introductionmentioning

confidence: 99%

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Dielectric polarization and relaxation processes of the lithium-ion conducting PEO/PVDF blend matrix-based electrolytes: effect of TiO2 nanofiller

Dhatarwal

Sengwa

2020

SN Appl. Sci.

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The effect of TiO 2 nanofiller concentration on the dielectric polarization and relaxation processes of (75PEO/25PVDF)/25 wt% LiClO 4-x wt% TiO 2 (x = 0, 2, 5, 10, 15, and 20) compositions based nanocomposite solid polymer electrolyte (NSPE) films has been investigated by employing the dielectric relaxation spectroscopy. The SEM micrographs demonstrate that the dispersion of TiO 2 nanoparticles enormously alters the spherulitic morphology with the development of some cracks, pores, and wrinkles of these solution-cast prepared NSPE films. The X-ray diffraction study confirms that the heterostructures of these NSPE materials are semicrystalline and their degree of crystallinity increases irregularly with the increase of TiO 2 concentration, however the crystallinity of host polymer blend matrix of these electrolytes decreases. The complex dielectric permittivity spectra of these NSPE materials in the frequency range from 20 Hz to 1 MHz at 27 °C reveal that there is a dominant contribution of electrode polarization and interfacial polarization at lower frequencies, whereas the high frequency permittivity values attribute to dipolar and ionic polarizations. Four types of relaxation processes have been probed by the 'master curve representation' of the dielectric and electrical spectra of these solid ion-dipole complexes. It is observed that the addition of TiO 2 nanoparticles up to 10 wt% in these electrolytes influences the dielectric properties anomalously, but a huge decrease in the dielectric polarization and increase in the relaxation times are noted resulting in a significant decrease in the ionic conductivity of the film at 20 wt% TiO 2 concentration. The dependence of dc ionic conductivity of these lithium-ion conducting NSPE materials on the chain segmental relaxation time and also the degree of crystallinity has been explored. The results of these NSPE materials have also been compared with the TiO 2 nanoparticles loaded different polymer matrices and salts based electrolytes and discussed appropriately. These lithium-ion based electrolyte films are accredited for the solid-state ion-conducting energy storing devices from their electrochemical parameters characterized by LSV, CV, and CA techniques.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dielectric polarization and relaxation processes of the lithium-ion conducting PEO/PVDF blend matrix-based electrolytes: effect of TiO2 nanofiller

Dhatarwal

Sengwa

2020

SN Appl. Sci.

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“…After thermal treatment, the PEO re-solidified and caused a substantial increase in microfibers’ diameters [ 63 ]. Meanwhile, at 120 °C, the PEO was prone to decompose and be volatilized [ 64 ], which eventually decreased fibers’ diameters compared with before treatment and the microfibers treated at 100 °C.…”

Section: Resultsmentioning

confidence: 99%

Thermally Treated Berberine-Loaded SA/PVA/PEO Electrospun Microfiber Membranes for Antibacterial Wound Dressings

Zhang

et al. 2022

Polymers

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This study aimed to develop a safe and advanced antibacterial material of electrospun microfiber membranes (MFMs) for wound dressings. Combinations of several materials were investigated; thermal treatment and electrospinning techniques were used to form the best quality of MFMs to suit its end applications. By comparing the fiber morphology, diameter changes, and fracture strength, the suitable ratio of raw materials and thermal treatment were obtained before and after adding Trition X-100 as a surfactant for MFMs of sodium alginate/polyvinyl alcohol/polyethylene oxide (SA/PVA/PEO). The electrospinning solution was mixed with berberine as an antibacterial substance; meanwhile, calcium chloride (CaCl2) was used as the crosslinking agent. The antibacterial properties, water dissolution resistance, water content, and fracture strength were thoroughly investigated. The results showed that the antibacterial rates of MFMs with different mass fractions of berberine (0, 3, and 5 wt.%) to Escherichia coli (E. coli) were 14.7, 92.9, and 97.2%, respectively. The moisture content and fracture strength of MFMs containing 5 wt.% berberine were 72.0% and 7.8 MPa, respectively. In addition, the produced MFMs embodied great water dissolution resistance. Berberine-loaded SA/PVA/PEO MFMs could potentially serve as an antibacterial wound dressing substrate with low cost and small side effects.

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“…This amorphous interface is conducive to increasing the mobility of polymer chains, thereby promoting the conductivity of Li + at the amorphous interface. It can be seen from Figure 3b that when the addition of HNT is 20 wt%, the composite solid electrolyte has the highest ionic conductivity of 3.8×10 −5 S cm −1 , which means that, as an inorganic filler, HNT improves the ionic conductivity of PEO matrix [54] . Feng et al .…”

Section: Development Of Organic‐inorganic Csementioning

confidence: 92%

Advances in Ordered Architecture Design of Composite Solid Electrolytes for Solid‐State Lithium Batteries

Sun

Liu

et al. 2023

The Chemical Record

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Solid electrolyte lithium batteries are the next generation of advanced energy devices. The incorporation of solid electrolytes can significantly improve the safety issue of lithium‐ion batteries. Organic‐inorganic composite solid electrolytes (CSE) are promising candidates for solid‐state batteries, but their application is mainly limited by low ionic conductivity. Many studies have shown that the architecture of ordered inorganic fillers in CSE can act as fast lithium‐ion transfer channels by auxiliary means, thus significantly improving the ionic conductivities. This review summarises the recent advances in CSE with different dimensional inorganic fillers. Various effective strategies for the construction of ordered structures in CSE are then presented. The review concludes with an outlook on the future development of CSE. This review aims to provide researchers with an in‐depth understanding of how to achieve ordered architectures in CSE for advanced solid state lithium batteries.

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The role of halloy site on crystallinity, ion conductivity, thermal and mechanical properties of poly(ethylene-oxide)/halloysite nanocomposites

Cited by 14 publications

References 47 publications

Dielectric polarization and relaxation processes of the lithium-ion conducting PEO/PVDF blend matrix-based electrolytes: effect of TiO2 nanofiller

Dielectric polarization and relaxation processes of the lithium-ion conducting PEO/PVDF blend matrix-based electrolytes: effect of TiO2 nanofiller

Thermally Treated Berberine-Loaded SA/PVA/PEO Electrospun Microfiber Membranes for Antibacterial Wound Dressings

Advances in Ordered Architecture Design of Composite Solid Electrolytes for Solid‐State Lithium Batteries

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