A single-ion conductor polymer electrolyte was prepared and the effects of the ratio of isophthalic acid (IPA) to 4, 4’-diphenyl ether dicarboxylic acid (DPE) on the structure and electrochemical properties have been investigated. Results show that all the lithium sulfonated polyoxadiazoles (Li-SPODs) have excellent thermal stability (510 °C). The ionic conductivity of the Li-SPOD is 7.2 × 10−4 S cm−1 at room temperature when the IPA/DPE ratio is 6/4. A high Coulombic efficiency of 99.1% for the LiFePO4/6/4 li-SPOD SPEs/Li half-cell could be achieved with a capacity retention of 90.63% at a current density of 0.1 C after 25 cycles.

Biphasic polypropylene (PP)-polyvinyl alcohol (PVA) fibers containing silica nanoparticles with various surface hydrophobicity were melt-spun. The localization of nanoparticles relates on the thermodynamic factors, and the design promotes a surface-decorated fibrous scaffold with nanoparticles after selective extraction. The influence of silica nanoparticles on the melt flow index was observed, and the interface-located Aerosil R972 silica nanoparticles lead to an increase in viscosity. The scanning electron microscopy (SEM) demonstrates the preponderant interfacial localization of Aerosil R972 nanoparticles within the biphasic fibers. The porous morphology of the obtained fibers was investigated by SEM, selective extraction experiment, X-ray diffraction analysis, and dynamical mechanical analysis. The specific interface area of PP 70 -PVA 30 fibers with a draw ratio (DR) of 2 is 3.2 m 2 g −1 and is further enlarged with the increase of DR. The incorporation of nanoparticles contributes to the increase of interconnectivity of the PVA phase. The further increment of DR modifies the crystalline structure, and results in better mechanical properties. The Aerosil R972-containing fibers with the DR of 3 provide almost completely accessible PVA phase, with enough mechanical strength to be transformed into textile products, and retains a good mechanical property after selective extraction.

The polyvinyl alcohol (PVA) photopolymer films (PFs) were prepared based on iron(III) trichloride as the photosensitizer and PVA as the polymer matrix (Fe(III)-PVA). The nano silicon dioxide (nano-SiO 2 ) was mixed with the resin in proportions of 0.5, 1.0, 2.0, and 5.0 wt %, respectively. The iodine gallium lamp (350-450 nm) was used as a UV curing light source. The effects of nano-SiO 2 on the structures and properties of Fe(III)-PVA PFs were studied by scanning electron microscopy(SEM) analysis, ultraviolet-visible absorption spectroscopy (UV/Vis), X-ray diffraction (XRD), dynamic thermomechanical analysis(DMA), gel content test, tensile strength test, and Shore hardness test. The Fe(III)-PVA PFs with the content of 1.0 wt %-nano-SiO 2 exhibits the highest gel content and tensile strength. The Fe(III)-PVA PFs with the content of 2.0 wt % nano-SiO 2 exhibits the highest Shore hardness. Photolithographic patterning of the Fe(III)-PVA PFs using a UV source has been carried out, which leads to a good contrast behavior after development in an aqueous media when the content of nano-SiO 2 was lower than 2.0 wt %. After evaluating the structure, performance, and development results, the Fe(III)-PVA PFs with the content of 1.0 wt % nano-SiO 2 exhibits the best overall properties.