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        Preparation and Investigation of Solid Polymer Electrolyte Based on Novel Polyamide Elastomer/Metal Salt

        Weibo Kong,Yuan Lei,Ye Yuan,Changlin Zhou,Jingxin Lei 한국고분자학회 2017 Macromolecular Research Vol.25 No.8

        Antistatic-polyamide elastomers composed of poly(urethane-urea-amide) (PUUA) and NaSCN was successfully synthesized through in-situ reactive processing in double-screw extruder. The obtained antistatic-polyamide elastomers can be employed as solid polymer electrolyte to improve the surface conductivity of polymers. The effect of PUUA composition, NaSCN content, temperature and relative humidity on the surface resistivity of antistatic-polyamide elastomer was extensively studied by surface resistivity. The results showed that the surface resistivity of antistatic-polyamide elastomer was slightly influenced by temperature and relative humidity, and can satisfy the application of antistatic materials requirement. Moreover, thermalgravity analysis (TGA), tensile test and scanning electron microscopy (SEM) were used to evaluate the thermal stability, mechanical properties and morphology of fracture face of antistatic-polyamide elastomers. TGA results demonstrated that antistatic-polyamide elastomers have a good thermal stability with the onset decomposition temperature exceed 280?. Tensile tests revealed that the prepared antistatic-polyamide elastomers possess good mechanical properties. SEM showed that the antistatic ability of antistatic-polyamide elastomer is relative to the ion-conductive channels or network formed by the PUUA and NaSCN particles.

      • KCI등재

        Preparation, Characterization and Properties of Poly(lactic acid)/ Poly(1,4-butylene adipate) Blends for Biodegradable Packaging Materials

        Zhimeng Liu,Yuan Lei,Zeyu Hu,Weibo Kong,Changlin Zhou,Jingxin Lei 한국고분자학회 2017 Macromolecular Research Vol.25 No.5

        Poly(lactic acid) (PLA)/poly(1,4-butylene adipate) (PBA) blends with different PBA content were directly prepared via melt blending as potential biodegradable packaging materials. PBA with 1000 g/mol number average molecular weight was served as plasticizer to improve PLA properties. The morphological, thermal and mechanical properties of the blends were extensively investigated by scanning electron microscope (SEM), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), tensile and impact tests and thermogravimetry (TG). The results show that the degree of crystallinity of PLA increased with increasing PBA content. The addition of PBA (20 wt%) result in the positive effect on the elongation at break and toughness, which increased from 7.9% to 74.4% and from 3.9 kJ/m2 to 12.6 kJ/ m2, respectively. Meanwhile, the migration tests indicate that PBA exhibits excellent lower migration ratio compared with citrate esters.

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