Limits...
Electrophysical behavior of ion-conductive organic-inorganic polymer system based on aliphatic epoxy resin and salt of lithium perchlorate.

Matkovska L, Iurzhenko M, Mamunya Y, Matkovska O, Demchenko V, Lebedev E, Boiteux G, Serghei A - Nanoscale Res Lett (2014)

Bottom Line: The effect of LiClO4 content on the electrophysical properties of epoxy polymers has been studied by differential scanning calorimetry (DSC) and broadband dielectric spectroscopy (BDS).The effect of LiClO4 content on the structure has been studied by wide-angle X-ray scattering (WAXS).The presence of ether oxygen in DEG macromolecules provides a transfer mechanism of the lithium cations with the ether oxygen similar to polyethylene oxide (PEO).

View Article: PubMed Central - PubMed

Affiliation: Institute of Macromolecular Chemistry of National Academy of Sciences of Ukraine, Kyiv, 02160, Ukraine, LOVEMK@ukr.net.

ABSTRACT

Unlabelled: In the present work, ion-conductive hybrid organic-inorganic polymers based on epoxy oligomer of diglycide aliphatic ester of polyethylene glycol (DEG) and lithium perchlorate (LiClO4) were synthesized. The effect of LiClO4 content on the electrophysical properties of epoxy polymers has been studied by differential scanning calorimetry (DSC) and broadband dielectric spectroscopy (BDS). The effect of LiClO4 content on the structure has been studied by wide-angle X-ray scattering (WAXS). It was found that LiClO4 impacts on the structure of the synthesized hybrid epoxy polymers, probably, by formation of coordinative complexes {ether oxygen-lithium cations-ether oxygen} as evidenced from a significant increase in their glass transition temperatures with increasing LiClO4 concentration and WAXS studies. The presence of ether oxygen in DEG macromolecules provides a transfer mechanism of the lithium cations with the ether oxygen similar to polyethylene oxide (PEO). Thus, the obtained hybrid polymers have high values of ionic conductivity σ' (approximately 10(-3) S/cm) and permittivity ϵ' (6 × 10(5)) at elevated temperatures (200°С). On the other hand, DEG has higher heat resistance compared to PEO that makes these systems perspective as solid polymer electrolytes able to operate at high temperature.

Pacs: 81.07.Pr; 62.23.St; 66.30.hk.

No MeSH data available.


Related in: MedlinePlus

The WAXS studies of the DEG/LiClO4systems. The wide-angle X-ray diffraction patterns of a salt of LiClO4 (1) and DEG/LiClO4 systems with the salt content: 0 phr (2), 5 phr (3), 10 phr (4), and 20 phr (5) at 20°C ± 2°C.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4493850&req=5

Fig6: The WAXS studies of the DEG/LiClO4systems. The wide-angle X-ray diffraction patterns of a salt of LiClO4 (1) and DEG/LiClO4 systems with the salt content: 0 phr (2), 5 phr (3), 10 phr (4), and 20 phr (5) at 20°C ± 2°C.

Mentions: The analysis of the wide-angle X-ray diffraction patterns of the systems showed that all of them are amorphous (Figure 6). In particular, epoxy oligomer DEG that was cured with polyethylene polyamine is characterized by short-range ordering in the space translation of molecular fragments of its cross-site links. That is confirmed by presence of one diffraction peak (calculated from the angular half-width) of the diffusion type (amorphous halo), in which the angular position (2θm) is about 20.0°.Figure 6


Electrophysical behavior of ion-conductive organic-inorganic polymer system based on aliphatic epoxy resin and salt of lithium perchlorate.

Matkovska L, Iurzhenko M, Mamunya Y, Matkovska O, Demchenko V, Lebedev E, Boiteux G, Serghei A - Nanoscale Res Lett (2014)

The WAXS studies of the DEG/LiClO4systems. The wide-angle X-ray diffraction patterns of a salt of LiClO4 (1) and DEG/LiClO4 systems with the salt content: 0 phr (2), 5 phr (3), 10 phr (4), and 20 phr (5) at 20°C ± 2°C.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4493850&req=5

Fig6: The WAXS studies of the DEG/LiClO4systems. The wide-angle X-ray diffraction patterns of a salt of LiClO4 (1) and DEG/LiClO4 systems with the salt content: 0 phr (2), 5 phr (3), 10 phr (4), and 20 phr (5) at 20°C ± 2°C.
Mentions: The analysis of the wide-angle X-ray diffraction patterns of the systems showed that all of them are amorphous (Figure 6). In particular, epoxy oligomer DEG that was cured with polyethylene polyamine is characterized by short-range ordering in the space translation of molecular fragments of its cross-site links. That is confirmed by presence of one diffraction peak (calculated from the angular half-width) of the diffusion type (amorphous halo), in which the angular position (2θm) is about 20.0°.Figure 6

Bottom Line: The effect of LiClO4 content on the electrophysical properties of epoxy polymers has been studied by differential scanning calorimetry (DSC) and broadband dielectric spectroscopy (BDS).The effect of LiClO4 content on the structure has been studied by wide-angle X-ray scattering (WAXS).The presence of ether oxygen in DEG macromolecules provides a transfer mechanism of the lithium cations with the ether oxygen similar to polyethylene oxide (PEO).

View Article: PubMed Central - PubMed

Affiliation: Institute of Macromolecular Chemistry of National Academy of Sciences of Ukraine, Kyiv, 02160, Ukraine, LOVEMK@ukr.net.

ABSTRACT

Unlabelled: In the present work, ion-conductive hybrid organic-inorganic polymers based on epoxy oligomer of diglycide aliphatic ester of polyethylene glycol (DEG) and lithium perchlorate (LiClO4) were synthesized. The effect of LiClO4 content on the electrophysical properties of epoxy polymers has been studied by differential scanning calorimetry (DSC) and broadband dielectric spectroscopy (BDS). The effect of LiClO4 content on the structure has been studied by wide-angle X-ray scattering (WAXS). It was found that LiClO4 impacts on the structure of the synthesized hybrid epoxy polymers, probably, by formation of coordinative complexes {ether oxygen-lithium cations-ether oxygen} as evidenced from a significant increase in their glass transition temperatures with increasing LiClO4 concentration and WAXS studies. The presence of ether oxygen in DEG macromolecules provides a transfer mechanism of the lithium cations with the ether oxygen similar to polyethylene oxide (PEO). Thus, the obtained hybrid polymers have high values of ionic conductivity σ' (approximately 10(-3) S/cm) and permittivity ϵ' (6 × 10(5)) at elevated temperatures (200°С). On the other hand, DEG has higher heat resistance compared to PEO that makes these systems perspective as solid polymer electrolytes able to operate at high temperature.

Pacs: 81.07.Pr; 62.23.St; 66.30.hk.

No MeSH data available.


Related in: MedlinePlus