TPO based nanocomposites. Part 1. Morphology and mechanical properties

Lee, Hyuk Soo; Fasulo, Paula D.; Rodgers, William R.; Paul, Donald R

doi:10.1016/j.polymer.2005.09.068

Cited by 275 publications

(206 citation statements)

References 44 publications

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“…In comparison to the Figure 8. Schematic illustration of the morphological change in PP/elastomer nanocomposites with increasing MMT content at a fixed elastomer concentration [22] . Note: Reprinted from [22] with permission from Elsevier.…”

Section: Discussionmentioning

confidence: 99%

“…Lee et al [22] analyzed the differences caused in the morphology of PP/Ethylene-Octene based elastomer blend with the addition of the MMT clay by AFM. Summarizing, the authors proposed a schematic illustration (Figure 8) to show the modifications in the elastomer particles with the addition of the MMT in the blend.…”

Section: De Sousa F D B; Scuracchio C H -The Use Of Atomic Formentioning

confidence: 99%

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The use of atomic force microscopy as an important technique to analyze the dispersion of nanometric fillers and morphology in nanocomposites and polymer blends based on elastomers

Sousa

Scuracchio

2014

Polímeros

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AFM has been recognized as one of the most powerful tools for the analysis of surface morphologies because it creates three-dimensional images at angstrom and nano scale. This technique has been exhaustively used in the analyses of dispersion of nanometric components in nanocomposites and in polymer blends, because of the easiness of sample preparation and lower equipment maintenance costs compared to electron microscopy. In this review, contributions using AFM are described, with emphasis on the dispersion of nanofillers in polymeric matrices. It is aimed to show the importance of technical analysis for nanocomposites and polymer blends based on elastomers.

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Section: Discussionmentioning

confidence: 99%

Section: De Sousa F D B; Scuracchio C H -The Use Of Atomic Formentioning

confidence: 99%

The use of atomic force microscopy as an important technique to analyze the dispersion of nanometric fillers and morphology in nanocomposites and polymer blends based on elastomers

Sousa

Scuracchio

2014

Polímeros

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“…n-heptanol (98%, Aldrich) was dried over molecular sieve (4 Å ) and tin(II) octoate (Sn(Oct) 2 ) (95%, Aldrich) was used as received without any purification, and diluted in dry toluene (0.01M). A commercially available extrusion-grade PLA (NatureWorks 4032D) designed especially for production of biaxially oriented films was used as received (M n ¼ 133 500^5,000 g mol 21 …”

Section: Methodsmentioning

confidence: 99%

“…[15][16][17][18] The role of the nanoparticles is to get specifically localized at the interface of both polymeric partners, to strengthen the interfacial adhesion between the partners and thus to enhance the overall material performances. [19][20][21] The use of nanoadditives (e.g. clay or silica nanoparticles) provides further advantages for polymeric blends such as enhanced material properties, ease of processing, and lower costs in comparison to block and graft copolymer compatibilizers.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic insights on nanosilica self-networking inducing ultra-toughness of rubber-modified polylactide-based materials

et al. 2015

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“…A presença do compatibilizante promoveu uma diminuição na espessura das partículas de argila, o que consequentemente, ocasionou uma maior razão de aspecto, comportamento já observado por Lee et al [17,20] em blendas de nanocompósitos de PP com elastômero utilizando PP-g-MA como compatibilizante.…”

Section: Morfologia Dos Nanocompósitos De Pp/ommtunclassified

Estudo da dispersão de argilas organofílicas em nanocompósitos de prolipropileno obtidos pelo método em solução com auxílio de ultrassom

Bischoff¹,

Santos²,

Liberman³

et al. 2013

Polímeros

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Resumo: Nanocompósitos de polipropileno PP/OMMT foram preparados com o uso de duas argilas modificadas organofilicamente (C-15A e I-44P) e de um compatibilizante (PP-g-MA) pelo método em solução utilizando-se um banho de ultrassom. O objetivo deste estudo foi compreender a morfologia dos nanocompósitos, ou seja, o grau de dispersão destas argilas na matriz de polipropileno, e consequentemente, correlacioná-la com as propriedades finais obtidas. A morfologia dos nanocompósitos foi avaliada por Difração de Raios X (DRX) e Microscopia Eletrônica de Transmissão (MET). As propriedades mecânico-dinâmicas e térmicas dos nanocompósitos foram avaliadas por Análise Mecânico-Dinâmica (DMA) e Calorimetria Diferencial de Varredura (DSC). Análises estatísticas das imagens de transmissão foram realizadas possibilitando a obtenção da razão de aspecto (comprimento/espessura) das partículas de argila. Palavras-chave: Argilas organofílicas, morfologia, nanocompósitos de PP, razão de aspecto, ultrassom. Dispersion of Organoclays in Polypropylene Nanocomposites by Ultrasound-assisted Solution MethodAbstract: Polypropylene nanocomposites PP/OMMT were prepared using two modified organic clays (C-15A and I-44P) and (PP-g-MA) as compatibilizer in the solution method using an ultrasound bath. The objective of this study was to understand the morphology of the nanocomposites and degree of clay dispersion in the polypropylene matrix, which are then correlated with the final properties. The morphology of nanocomposites was evaluated by X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). The dynamic mechanical properties and thermal properties were measured by Dynamic Mechanical Analysis (DMA) and Differential Scanning Calorimetry (DSC). Statistical analyses of the transmission images were made in order to obtain the aspect ratio (length/thickness) of the clay particles. Keywords: Organoclays, morphology, PP nanocomposites, aspect ratio, ultrasound. IntroduçãoO polipropileno (PP) é um dos polímeros mais utilizados na indústria devido a sua alta versatilidade em termos de propriedades como: facilidade de processamento, alta resistência química, baixo custo, além de ser reciclável [1] . No entanto, para determinadas aplicações torna-se necessário o incremento de algumas propriedades como: estabilidade dimensional, resistência ao impacto e rigidez. Em virtude disso, a adição de cargas minerais em nível nanométrico tem sido empregada como método para se alcançar estes ganhos em propriedades [2] . Dentre as nanocargas mais utilizadas na obtenção de nanocompósitos, a montmorilonita (MMT) [3] tem se destacado por apresentar estrutura em multicamadas e elevada razão de aspecto [4] . Porém, a dispersão de nanocargas em poliolefinas não é favorecida termodinamicamente, visto que a afinidade química entre a MMT (carga inorgânica polar) e o PP (matriz orgânica apolar) é consideravelmente baixa. Para promover uma melhor compatibilidade é necessário modificar quimicamente a MMT tornando-a organofílica (OMMT) [5] , processo que ocorre pela ...

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TPO based nanocomposites. Part 1. Morphology and mechanical properties

Cited by 275 publications

References 44 publications

The use of atomic force microscopy as an important technique to analyze the dispersion of nanometric fillers and morphology in nanocomposites and polymer blends based on elastomers

The use of atomic force microscopy as an important technique to analyze the dispersion of nanometric fillers and morphology in nanocomposites and polymer blends based on elastomers

Mechanistic insights on nanosilica self-networking inducing ultra-toughness of rubber-modified polylactide-based materials

Estudo da dispersão de argilas organofílicas em nanocompósitos de prolipropileno obtidos pelo método em solução com auxílio de ultrassom

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