Structural Peculiarities of Ion-Conductive Organic-Inorganic Polymer Composites Based on Aliphatic Epoxy Resin and Salt of Lithium Perchlorate

Abstract

The article is concerned with hybrid amorphous polymers synthesized basing on epoxy oligomer of diglycide aliphatic ester of polyethylene glycol that was cured by polyethylene polyamine and lithium perchlorate salt. Structural peculiarities of organic-inorganic polymer composites were studied by differential scanning calorimetry, wide-angle X-ray spectra, infrared spectroscopic, scanning electron microscopy, elemental analysis, and transmission and reflective optical microscopy. On the one hand, the results showed that the introduction of LiClO4 salt into epoxy polymer leads to formation of the coordinative metal-polymer complexes of donor-acceptor type between central Li+ ion and ligand. On the other hand, the appearance of amorphous microinclusions, probably of inorganic nature, was also found.

Structure-Morphology-Antimicrobial and Antiviral Activity Relationship in Silver-Containing Nanocomposites Based on Polylactide

“…Thus, the boundary layer on the surface of the filler with distended molecular packaging provides greater mobility of the segments of macromolecules, which reduces the glass transition temperature of the samples. It should be noted that the effect of the nanofiller on the value of T g can be different depending on the role it plays, for example in [42,43] a linear increase in the glass transition temperature with increasing filler content was observed, where its interaction with the polymer matrix led to the creation of the complexes and restrictions in molecular mobility.…”

“…provides greater mobility of the segments of macromolecules, which reduces the glass transition temperature of the samples. It should be noted that the effect of the nanofiller on the value of Tg can be different depending on the role it plays, for example in [42,43] a linear increase in the glass transition temperature with increasing filler content was observed, where its interaction with the polymer matrix led to the creation of the complexes and restrictions in molecular mobility. Also, the cold crystallization temperature Tccr of the studied samples shifts to the low-temperature region with increasing nanofiller content (Figure 6b).…”

Thermal and Electrochemical Properties of Solid Polymer Electrolytes Prepared via Lithium Salt-Catalyzed Epoxide Ring Opening Polymerization

“…In order to get around the limitations in room temperature conductivity that are imposed by the direct incorporation of PEO in the electrolyte, Wu et al prepared an epoxidebased solid polymer electrolyte using LiClO 4 to polymerize DGEPEG and triglycidyl ether of glycerol (TGEG) [14]. Like PEO, DGEPEG has ethylene oxide units and can be used to conduct lithium cations [77]. Additionally, the material has a low T g and can be used to form films via the lithium salt-activated ring opening polymerization reaction [77].…”

“…Like PEO, DGEPEG has ethylene oxide units and can be used to conduct lithium cations [77]. Additionally, the material has a low T g and can be used to form films via the lithium salt-activated ring opening polymerization reaction [77]. The biggest advantage in using DGEPEG as opposed to PEO is that the resultant films are much less crystalline at room temperature [77].…”

“…Additionally, the material has a low T g and can be used to form films via the lithium salt-activated ring opening polymerization reaction [77]. The biggest advantage in using DGEPEG as opposed to PEO is that the resultant films are much less crystalline at room temperature [77]. The room temperature ionic conductivity of this electrolyte was around 10 −5 S/cm which is greater than that of both PEO and epoxidebased polymers that are prepared directly from PEO [14].…”