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首页> 外文期刊>Journal of Polymers and the Environment >Polyhydroxybutyrate-Based Nanocomposites with Cellulose Nanocrystals and Bacterial Cellulose
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Polyhydroxybutyrate-Based Nanocomposites with Cellulose Nanocrystals and Bacterial Cellulose

机译：纤维素纳米晶体和细菌纤维素的基于聚羟基丁酸酯的纳米复合材料

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摘要

Polyhydroxybutyrate (PHB) films nanoreinforced with hydrolyzed cellulose nanocrystals (CNC) and bacterial cellulose (BC) were prepared by solvent casting. The influence of different cellulose nanoparticles content (2, 4 and 6 wt% of CNC and 2 wt% of BC) on the PHB properties was studied. CNC nanocomposites presented good dispersion of the nanocrystals, improving transparency, mechanical and barrier properties of the PHB films. On the other hand, reduced thermal stability and mechanical properties were yielded by BC addition due to the intrinsic lower degradation temperature and higher length of the BC nanofibrils compared to CNC. Nanocomposites performance variation is mainly caused by the marked difference in nanoparticles structure. It was demonstrated that PHB-CNC films exhibited higher performance enhancement without detrimental effect of the pristine PHB properties.
机译：通过溶剂浇铸制备了水解纤维素纳米晶体（CNC）和细菌纤维素（BC）纳米增强的聚羟基丁酸酯（PHB）薄膜。研究了不同的纤维素纳米颗粒含量（2、4和6 wt％的CNC和2 wt％的BC）对PHB性能的影响。 CNC纳米复合材料呈现出良好的纳米晶体分散性，改善了PHB薄膜的透明度，机械性能和阻隔性能。另一方面，由于与CNC相比固有的较低的降解温度和BC纳米原纤维的较长长度，通过添加BC会降低热稳定性和机械性能。纳米复合材料的性能变化主要是由纳米颗粒结构的明显差异引起的。已经证明，PHB-CNC膜表现出更高的性能增强，而没有原始PHB特性的有害影响。

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  • 来源
    《Journal of Polymers and the Environment》 |2017年第3期|586-598|共13页
  • 作者

    Seoane I. T.; Cerrutti P.; Vazquez A.; Manfredi L. B.; Cyras V. P.;

  • 作者单位

    UNMdP, CONICET, Inst Invest Ciencia & Tecnol Mat INTEMA, Ecomat,Fac Ingn, JB Justo 4302, RA-7600 Mar Del Plata, Buenos Aires, Argentina;

    UBA, ITPN, Fac Ingn, CONICET, Las Heras 2214, RA-1127 Buenos Aires, DF, Argentina;

    UBA, ITPN, Fac Ingn, CONICET, Las Heras 2214, RA-1127 Buenos Aires, DF, Argentina;

    UNMdP, CONICET, Inst Invest Ciencia & Tecnol Mat INTEMA, Ecomat,Fac Ingn, JB Justo 4302, RA-7600 Mar Del Plata, Buenos Aires, Argentina;

    UNMdP, CONICET, Inst Invest Ciencia & Tecnol Mat INTEMA, Ecomat,Fac Ingn, JB Justo 4302, RA-7600 Mar Del Plata, Buenos Aires, Argentina;

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  • 正文语种 eng
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  • 关键词

    Polyhydroxybutyrate; Cellulose nanoparticles; Nanocomposites;

    机译：聚羟基丁酸酯;纤维素纳米颗粒;纳米复合材料;

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