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Effect of organoclay and preparation method on properties of antimicrobial cellulose acetate films

机译：有机粘土的影响及制备方法对乙酸纤维纤维素膜性能的影响

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摘要

The aim of the present study was oriented to evaluate the effect of a commercial organoclay and the technique of preparation on the physical and antimicrobial properties of active eco-friendly nanocomposites films. To this antimicrobial nanocomposite films were fabricated from cellulose acetate (CA) powder, triethyl citrate (TEC) plasticizer, a commercial organoclay Cloisite30B (C30B), and cinnamaldehyde (Ci) as active agent. All nanocomposites showed the intercalation of the polysaccharide inside the organoclay structure, however, the level of the intercalation and the quality of the clay dispersion were dependent on the method selected to prepare them (solution-casting or extrusion). In addition, nanocomposites obtained by extrusion evidenced a better dispersion of organoclay. Important changes on the color properties of films were evidenced, which was associated to the thermal degradation of the quaternary ammonium surfactant of the Cloisite30B. On the other hand, organoclay was unable to reduce the cinnamaldehyde loss during the extrusion and storage, nevertheless, a slight effect of the Cloisite30B on the cinnamaldehyde release to a food simulant was observed to nanocomposites prepared by extrusion. Finally, despite cinnamaldehyde loss was observed over time, the content of residual active compound into the films was able to impart antimicrobial activity against Escherichia coli for 14 weeks. POLYM. COMPOS., 40:2311-2319, 2019. (c) 2018 Society of Plastics Engineers
机译：本研究的目的是取向评估商业有机粘土的影响和制备技术对活性环保纳米复合材料膜的物理和抗微生物性能的影响。对于该抗微生物纳米复合膜，由醋酸纤维素（CA）粉末，三乙基柠檬酸酯（TEC）增塑剂，商业有机粘土Cloisite30B（C30B）和肉桂醛（CI）作为活性剂。所有纳米复合材料都显示出有机粘层结构内的多糖的插入，然而，嵌入水平和粘土分散体的质量依赖于选择制备它们的方法（溶液浇铸或挤出）。另外，通过挤出获得的纳米复合材料证明了有机粘土的更好分散。证明了薄膜颜色性质的重要变化，其与Cloisite30b的季铵表面活性剂的热降解相关。另一方面，有机粘土在挤出和储存过程中不能降低肉桂醛损失，然而，通过挤出制备的纳米复合材料，观察到Cloisite30B对肉桂醛释放物的略微效果。最后，尽管随着时间的推移观察到肉桂醛损失，但残留活性化合物进入薄膜的含量能够赋予大肠杆菌的抗微生物活性14周。聚合物。 Compos。，40：2311-2319,2019。（c）2018年塑料工程师协会

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  • 来源
    《Polymer Composites》 |2019年第6期|共9页
  • 作者

    Rodriguez Francisco J.; Abarca Romina L.; Bruna Julio E.; Moya Paula E.; Galotto Maria J.; Guarda Abel; Padula Marisa;

  • 作者单位

    Univ Santiago Chile Ctr Dev Nanosci &

    Nanotechnol CEDENNA Dept Food Sci &

    Technol Fac Technol Food Packaging Lab LABEN Santiago Chile;

    Univ Santiago Chile Ctr Dev Nanosci &

    Nanotechnol CEDENNA Dept Food Sci &

    Technol Fac Technol Food Packaging Lab LABEN Santiago Chile;

    Univ Santiago Chile Ctr Dev Nanosci &

    Nanotechnol CEDENNA Dept Food Sci &

    Technol Fac Technol Food Packaging Lab LABEN Santiago Chile;

    Univ Santiago Chile Ctr Dev Nanosci &

    Nanotechnol CEDENNA Dept Food Sci &

    Technol Fac Technol Food Packaging Lab LABEN Santiago Chile;

    Univ Santiago Chile Ctr Dev Nanosci &

    Nanotechnol CEDENNA Dept Food Sci &

    Technol Fac Technol Food Packaging Lab LABEN Santiago Chile;

    Univ Santiago Chile Ctr Dev Nanosci &

    Nanotechnol CEDENNA Dept Food Sci &

    Technol Fac Technol Food Packaging Lab LABEN Santiago Chile;

    Inst Food Technol ITAL Packaging Technol Ctr CETEA Sao Paulo Brazil;

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  • 正文语种 eng
  • 中图分类 增强塑料、填充塑料;
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