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首页> 外文期刊>Journal of Applied Polymer Science >From microstructure to mechanical properties of compatibilized polylactide/thermoplastic starch blends
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From microstructure to mechanical properties of compatibilized polylactide/thermoplastic starch blends

机译：From microstructure to mechanical properties of compatibilized polylactide/thermoplastic starch blends

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摘要

Bio-degradable polymer blends of polylactic acid/thermoplastic starch (PLA/TPS) were prepared via direct melt blending varying order of mixing of ingredients fed into the extruder. The effect of interface interactions between PLA and TPS in the presence of maleic anhydride (MA) compatibilizer on the microstructure and mechanical properties was then investigated. The prepared PLA/TPS blends were characterized by scanning electron microscopy, differential scanning calorimetry (DSC), tensile, and rheological measurements. Morphology of PLA/TPS shows that the introduction of MA into the polymer matrix increases the presence of TPS at the interface region. DSC results revealed the reduction of glass transition temperature of PLA with contributions from both TPS and MA. The crystallization temperature was decreased by the addition of MA leading to reduction of overall crystallization of PLA/TPS blend. The mechanical measurements show that increasing MA content up to 2 wt enhances the modulus of PLA/TPS more than 45 compared to the corresponding blends free of MA compatibilizer. (C) 2017 Wiley Periodicals, Inc.

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