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首页> 外文期刊>Journal of Polymers and the Environment >Organic-Inorganic Hybrid Coatings for the Modification of Barrier Properties of Poly(lactic acid) Films for Food Packaging Applications
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Organic-Inorganic Hybrid Coatings for the Modification of Barrier Properties of Poly(lactic acid) Films for Food Packaging Applications

机译：用于食品包装用聚乳酸薄膜阻隔性能改性的有机-无机杂化涂料

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摘要

Organic-inorganic hybrid coatings based on poly(e-caprolactone), poly(ethylene oxide) or poly(lactic acid) as organic phase and silica from tetraethoxysilane as inorganic phase were prepared by the sol-gel approach. Coatings were applied onto poly(lactic acid) films for food packaging in order to improve its barrier properties towards oxygen and water vapour. All the prepared coatings were dense, homogeneous layers characterized by a good adhesion to the substrate. The permeance of the coating layers resulted one order of magnitude lower than that of the uncoated poly(lactic acid) (PLA) film. The hydrophilic character of the coating did not permit to gain a significant decrease in the water vapour permeance. The perfect visual transparency of the coatings allows their application without worsening of the esthetical properties of the substrate PLA film.
机译：采用溶胶-凝胶法制备了以聚ε-己内酯，聚环氧乙烷或聚乳酸为有机相，二氧化硅为四乙氧基硅烷为无机相的有机-无机杂化涂料。为了改善食品对氧气和水蒸气的阻隔性能，将涂料涂在食品包装用的聚乳酸薄膜上。所有制备的涂层都是致密，均质的层，其特征在于对基底的良好粘附性。涂层的渗透性比未涂覆的聚乳酸（PLA）膜的渗透性低一个数量级。涂层的亲水性不允许其水蒸气渗透率显着降低。涂层的完美视觉透明性使其可以在不损害基材PLA膜美学特性的情况下进行涂布。

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  • 来源
    《Journal of Polymers and the Environment》 |2009年第1期|10-19|共10页
  • 作者

    Marco Iotti; Paola Fabbri; Massimo Messori; Francesco Pilati; Patrizia Fava;

  • 作者单位

    Dipartimento di Scienze Agrarie, Universita di Modena e Reggio Emilia, Via Kennedy 17, 42100 Reggio Emilia, Italy Chemical Engineering Department, NTNU-Norwegian University of Science and Technology, Sem Saelandsvei 4, 7491 Trondheim, Norway;

    Dipartimento di Ingegneria dei Materiali e dell'Ambiente, Universita di Modena e Reggio Emilia, Via Vignolese 905/A, 41100 Modena, Italy Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali (INSTM), Firenze, Italy;

    Dipartimento di Ingegneria dei Materiali e dell'Ambiente, Universita di Modena e Reggio Emilia, Via Vignolese 905/A, 41100 Modena, Italy Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali (INSTM), Firenze, Italy;

    Dipartimento di Ingegneria dei Materiali e dell'Ambiente, Universita di Modena e Reggio Emilia, Via Vignolese 905/A, 41100 Modena, Italy Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali (INSTM), Firenze, Italy;

    Dipartimento di Scienze Agrarie, Universita di Modena e Reggio Emilia, Via Kennedy 17, 42100 Reggio Emilia, Italy;

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  • 正文语种 eng
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  • 关键词

    organic-inorganic hybrids; coatings; sol-gel process; poly(lactic acid); gas transmission rate;

    机译：有机-无机杂种;涂料;溶胶-凝胶法聚乳酸气体透过率;

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