Polypropylene–graft–maleic anhydride-nanocomposites: I—Characterization and thermal stability of nanocomposites produced under nitrogen and in air

Tidjani, Adams; Wald, Oliver; Pohl, M.-M; Hentschel, Manfred P.; Schartel, Bernhard

doi:10.1016/s0141-3910(03)00174-5

Cited by 88 publications

(64 citation statements)

References 21 publications

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“…The layered silicate merely hindered the product release and oxygen uptake, but did not influence the chemical reactions significantly. Therefore the results were similar to those reported in a previous paper for similar samples 16 and are not discussed in detail. What is more, in this study no significant differences in decomposition were observed due to the heat treatment during the different steps of preparation, such as extrusion, pressing and injection molding.…”

Section: Influence Of Preparation On Fire Propertiessupporting

confidence: 89%

Layered silicate polymer nanocomposites: new approach or illusion for fire retardancy? Investigations of the potentials and the tasks using a model system

Bartholmai

Schartel

2004

Polymers for Advanced Techs

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229

133

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Polymeric nanocomposites are discussed as one of the most promising advanced materials whose nanoscale effects can be exploited for industry. Layered silicate polypropylene-graft-maleic anhydride nanocomposites are investigated as a model to clarify the potential of such materials in terms of fire retardancy. The nanostructure is characterized using transmission electron microscopy (TEM) and shear viscosity. The fire behavior is characterized using different external heat fluxes in cone calorimeter, limiting oxygen index and UL 94 classification. A comprehensive fire behavior characterization is presented which enables an assessment of the materials' potential with respect to different fire scenarios and fire tests. The influence of morphology and the active mechanisms are discussed, such as barrier formation and changed melt viscosity. To our knowledge, it is the first attempt to illuminate the concept's strengths, such as the reduction of flame spread, and weaknesses, such as the lack of influence on ignitability, in a clear, comprehensive and detailed manner.

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Section: Influence Of Preparation On Fire Propertiessupporting

confidence: 89%

Layered silicate polymer nanocomposites: new approach or illusion for fire retardancy? Investigations of the potentials and the tasks using a model system

Bartholmai

Schartel

2004

Polymers for Advanced Techs

Self Cite

229

133

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“…Estudos sobre nanocompósitos PP/argila organofílica são amplamente divulgados na literatura [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] . Entretanto, o número de publicações sobre filmes de nanocompósitos PP/argila organofílica para aplicação no setor de embalagens alimentícias é limitado [21][22][23] e a literatura tem mostrado que, ao contrário dos nanocompósitos preparados com matrizes polares como poliamidas, poliésteres e policarbonatos, os preparados com matrizes apolares poliolefínicas não tem apresentado melhoramentos significativos nas propriedades mecânicas e de barreira, o que tem sido atribuído a fraca adesão interfacial polímero/argila [20] .…”

Section: Introductionunclassified

Desenvolvimento de filmes de nananocompósitos polipropileno/argila organofílica para embalagens

Araújo¹,

Mesquita²,

Canedo³

et al. 2012

Polímeros

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Resumo: Neste trabalho foram preparados filmes de nanocompósitos de polipropileno (PP) contendo 1% em massa de bentonita modificada organicamente com tecnologia nacional (APO). Polipropileno enxertado com anidrido maleico (PP-g-AM) e copolímero de etileno e álcool vinílico (EVOH) foram utilizados como agentes compatibilizantes. Os nanocompósitos foram preparados através da intercalação no estado fundido em extrusora de filme plano. A influência do tipo e do teor de compatibilizante e do tipo de polipropileno, na morfologia, propriedades mecânicas e de barreira ao vapor d'água dos referidos filmes foi investigada. Os dados de difração de raio X evidenciam que apesar da morfologia dos nanocompósitos ter sido afetada pelo tipo de compatibilizante, esta praticamente não variou com o teor de compatibilizante utilizado. As morfologias e as propriedades de barreira ao vapor d'água dos nanocompósitos preparados com os polipropilenos PP H401 e PP H07D-00 são semelhantes. Entretanto, aqueles preparados com PP H07D-00 apresentaram melhores propriedades mecânicas, excetuando a resistência da termossoldagem à tração, do que os preparados com a matriz polimérica PP H401, e a transparência dos nanocompósitos preparados com PP H07D-00 foi idêntica à da matriz polimérica sem argila. Os resultados indicam que os filmes de nanocompósitos PP H07D-00 compatibilizados com 15% de PP-g-AM e contendo 1% de argila organofílica APO podem ser promissores para aplicação em embalagens. Palavras-chave: Filmes de nanocompósitos, argila organofílica, polipropileno, compatibilizante. Development of Polypropylene/Organoclay Nanocomposite Films for PackagingAbstract: This work deals with polypropylene (PP) nanocomposite films containing 1 wt. (%) bentonite clay organically modified with national technology (APO). Maleic anhydride grafted polypropylene (PP-g-MA) and ethylene vinyl alcohol (EVOH) were used as compatibilizing agents. Nanocomposites were prepared by melt intercalation in a flat film extruder. An investigation was made of the influence from the type and content of compatibilizer and type of polypropylene on the morphology, mechanical properties and barrier properties to water vapor of these films. X-ray diffraction data show that while the nanocomposite morphology was affected by the type of compatibilizer, it was relatively insensitive to its content. The morphologies and barrier properties to water vapor of the nanocomposites prepared with the two polypropylenes (PP H401 and PP H07D-00) were similar. However, except for the heat sealing properties, those prepared with PP H07D-00 showed better mechanical properties. The transparency of P715AMAPO nanocomposite was similar to that of the P715AM matrix. The results indicated that PP H07D-00 nanocomposite films compatibilized with 15% PP-g-AM and containing 1% APO organoclay may be promising for packaging applications. Keywords: Nanocomposite films, organoclay, polypropylene, compatibilizer. IntroduçãoCom o advento dos nanocompósitos poliméricos, as indústrias de embalagens vêm vislumbran...

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“…The susceptibility of organo-modifiers and polymers toward thermal and thermooxidative degradation and the role of Al +3 ions on MMT platelets are the important concerns and recently they have been a subject of several studies [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34]. Some of the aspects were reviewed recently in [35]].…”

Section: Introductionmentioning

confidence: 99%

Thermal stability of nanoclay polypropylene composites by simultaneous DSC and TGA

Gołębiewski¹,

Gałęski²

2007

Composites Science and Technology

160

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Polypropylene–graft–maleic anhydride-nanocomposites: I—Characterization and thermal stability of nanocomposites produced under nitrogen and in air

Cited by 88 publications

References 21 publications

Layered silicate polymer nanocomposites: new approach or illusion for fire retardancy? Investigations of the potentials and the tasks using a model system

Layered silicate polymer nanocomposites: new approach or illusion for fire retardancy? Investigations of the potentials and the tasks using a model system

Desenvolvimento de filmes de nananocompósitos polipropileno/argila organofílica para embalagens

Thermal stability of nanoclay polypropylene composites by simultaneous DSC and TGA

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