Bionanocomposite films based on plasticized PLA–PHB/cellulose nanocrystal blends

Arrieta, Marina P.; Fortunati, Elena; Dominici, Franco; López, Juan; Kenny, J. M.

doi:10.1016/j.carbpol.2014.12.056

Cited by 304 publications

(256 citation statements)

References 38 publications

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“…For these reasons, it is the selected candidate for a wide variety of applications as, in addition, it is shiny and transparent, moisture and fat resistant and offers similar flavor and odor barrier properties to poly(ethylene terephthalate), PET. All these features makes PLA highly useful for food packaging [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…To overcome this, several environmentally friendly approaches have been proposed. One of this approaches is blending PLA with other polymers such as poly(hydroxy butyrate), PHB [11,2,12,13], poly(caprolactone), PCL [14], acetylated thermoplastic starch [15], etc. which can lead to tailored properties in terms of mechanical response, biodegradation rate, etc.…”

Section: Introductionmentioning

confidence: 99%

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Plasticizing effect of biobased epoxidized fatty acid esters on mechanical and thermal properties of poly(lactic acid)

et al. 2016

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Poly(lactic acid)-PLA is a polyester that can be produced from lactic acid derived from renewable resources. This polymer offers attracting uses in packaging industry due to its biodegradability and high tensile strength. However, PLA is quite brittle, which limits its applications. To overcome this drawback, PLA was plasticized with epoxy-type plasticizer derived from a fatty acid, octyl epoxy stearate (OES) at different loading (1, 3, 5, 10, 15 and 20 phr). The addition of OES decreases the glass transition temperature and provides a remarkable increase in elongation at break and impact absorbed energy.Plasticizer saturation occurs at relatively low concentrations of about 5 phr OES; higher concentration leads to phase separation as observed by field emission scanning electron microscopy (FESEM). Optimum balanced mechanical properties are obtained at relatively low concentrations of OES (5 phr) thus indicating the usefulness of this material as environmentally friendly plasticizer for PLA industrial formulations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plasticizing effect of biobased epoxidized fatty acid esters on mechanical and thermal properties of poly(lactic acid)

et al. 2016

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“…Em paralelo, a indústria de embalagens vem exigindo o desenvolvimento de novas misturas/formulações, processamentos mais simples e diminuição de custo no uso de suas tecnologias [2] . Ao mesmo tempo dessas preocupações anteriormente citadas, o consumidor também exige: alta qualidade do alimento e data de validade mais prolongada, além disso, que a embalagem seja transparente para facilitar a visualização do alimento e resistente quanto a contaminação, umidade e oxidação [3] . Os problemas decorrentes da poluição ambiental gerada pelo lixo plástico têm levado a comunidade científica a refletir sobre possíveis alternativas para o problema.…”

Section: Introductionunclassified

“…O uso de nanocompósitos pode ser uma boa solução tecnológica para melhorar as deficientes propriedades dos materiais para fins de embalagens. As nanopartículas desejadas devem ser recicladas e biodegradáveis [3] . A incorporação da argila vermiculita ao polihidroxibutirato (PHB) proporciona a formação de bionanocompósitos poliméricos.…”

Section: Introductionunclassified

Influência da argila vermiculita brasileira na biodegradação de filmes de PHB

et al. 2015

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ResumoEste trabalho teve como objetivo preparar e avaliar filmes PHB/vermiculita natural e modificada nas quantidades em peso de 1%, 3% e 6% através dos métodos intercalação por fusão e intercalação por solução. Os bionanocompósitos obtidos pelo método intercalação por fusão foram preparados em uma extrusora monorosca e posteriormente os filmes foram moldados via compressão. Na preparação dos filmes por solução, os sistemas foram submetidos à agitação e aquecimento a 80 °C. Os sistemas foram avaliados por difração de raios-X e o comportamento de biodegradação foi avaliado de acordo com a norma ASTM G 160-03. O acompanhamento da biodegradação foi realizado por meio de inspeção visual e perda de massa. Observou-se que o percentual de argila e o método de obtenção dos filmes influenciaram na estrutura formada e na biodegradação dos sistemas. Palavras-chave: polímeros biodegradáveis, argila vermiculita, ensaio de biodegradação, bionanocompósitos. AbstractThis study aimed to prepare and to evaluate natural and modified PHB /vermiculite films in quantities of 1%, 3% and 6% by weight, through melt intercalation and solution intercalation methods. The bionanocomposites in the form of thin films, obtained by the melt intercalation method, were prepared in a single screw extruder and then molded via compression. In the preparation of the films by solution method, the systems were stirred and heated at 80 °C in the presence of the chloroform solvent. The systems were evaluated by X-ray diffraction and the degradation behavior was evaluated according to ASTM G 160-03, by visual inspection and through weight loss. It was observed that the percentage of clay and the method of obtaining of the films influenced in the structure and biodegradability of the systems.

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“…A blend can be developed in order to improve mechanical and thermal properties, or for reducing the final cost of polymers 3,[8][9][10][11][12][13] . Studies show that the use of the plasticizers in the blend has the objective to obtain a better interaction between all components 7,8,14 . Natural polymers exhibit the advantages of biodegradability, biocompatibility, non toxicity and high reactivity [5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Wettability and Morphological Characterization of a Polymeric Bacterial Cellulose / corn Starch Membrane

et al. 2015

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Bionanocomposite films based on plasticized PLA–PHB/cellulose nanocrystal blends

Cited by 304 publications

References 38 publications

Plasticizing effect of biobased epoxidized fatty acid esters on mechanical and thermal properties of poly(lactic acid)

Plasticizing effect of biobased epoxidized fatty acid esters on mechanical and thermal properties of poly(lactic acid)

Influência da argila vermiculita brasileira na biodegradação de filmes de PHB

Wettability and Morphological Characterization of a Polymeric Bacterial Cellulose / corn Starch Membrane

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