Effect of processing conditions on the mechanical and thermal properties of high-impact polypropylene nanocomposites

Furlan, Luciano Gomes; Ferreira, Creusa Iara; Castel, Charles Dal; Santos, Karina Silva dos; Mello, Andréia C. E.; Liberman, Susana Alcira; Oviedo, M. A. S.; Mauler, Raquel Santos

doi:10.1016/j.msea.2011.05.044

Cited by 26 publications

(19 citation statements)

References 36 publications

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“…It was also found that the melt processing condition with high shear force could success up to some extent to get well-dispersed nanocomposites [35] . In the present study, use of hyperbranched polyester has shown to promote the exfoliation of nanoclays in the polypropylene.…”

Section: Mechanism Of Dispersionmentioning

confidence: 95%

Melt Processing and Characterization of Nanocomposites of PP/Na⁺MMT Blending with Hyperbranched Polyester

Tatiya

Nevare

Mahulikar

et al. 2014

Polymer-Plastics Technology and Engineering

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The present work accounts new approach for processing of PP nanocomposites containing 5 phr pristine Na þ montmorillonite clay with better clay dispersion by a single-step process along with improved processability using hyperbranched polyester (HBPE). A series of PP/MMT nanocomposites with different HBPE contents were fabricated by direct melt compounding on a Brabender torque rheometer where all components of the blends were fed simultaneously for mixing. The efficiency of this approach was evaluated against PP/MMT nanocomposites prepared with polypropylene graft-maleic anhydride (PP-g-MA) compatibilizer. The overall results revealed that systems with HBPE showed better balance of rheology and mechanical properties than nanocomposites with PP-g-MA. INTRODUCTIONIn the field of nanocomposites, polymer=layered-silicate nanocomposites have attracted considerable attention over the past decade as they offer remarkable enhancements of mechanical, thermal and barrier properties compared to pure polymers or conventionally filled composites [1][2][3][4] . However the complete dispersion or exfoliation of the clay nanolayers into the polymer system is necessary to get composites with improved mechanical performance but it proved to be a challenging job due to difference in polarity of polymer matrix and nanoparticles [5] .Significant research done by Toyota research group in the preparation of nylon-6=nano-clay composites has opened rebellion potential in the development of new nanostructured materials, where the property enhancements originate from the result of homogeneous dispersion of the silicate layers which was made possible due to better

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Section: Mechanism Of Dispersionmentioning

confidence: 95%

Melt Processing and Characterization of Nanocomposites of PP/Na⁺MMT Blending with Hyperbranched Polyester

Tatiya

Nevare

Mahulikar

et al. 2014

Polymer-Plastics Technology and Engineering

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“…Several studies have been devoted to improving the mechanical 2 International Journal of Polymer Science [27][28][29][30] and thermal properties of PP [31] by incorporating mineral fillers (i.e., clay) in an effort to diversify the use of PP. The intrinsic nonpolar nature of PP makes it incompatible with clay fillers; the use of modified clays and compatibilizers (such as polypropylene grafted maleic anhydride [32][33][34]) is a common approach to produce PP/clay nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Modification of Palygorskite on the Properties of Polypropylene/Polypropylene-g-Maleic Anhydride/Palygorskite Nanocomposites

Cisneros-Rosado

Uribe-Calderón

2017

International Journal of Polymer Science

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The effect of surface modification of palygorskite (Pal) on filler dispersion and on the mechanical and thermal properties of polypropylene (PP)/polypropylene grafted maleic anhydride (PP-g-MAH)/palygorskite (Pal) nanocomposites was evaluated. A natural Pal mineral was purified and individually surface modified with hexadecyl tributyl phosphonium bromide and (3-Aminopropyl)trimethoxysilane; the pristine and modified Pals were melt-compounded with PP to produce nanocomposites using PP-g-MAH as compatibilizer. The grafting of Pal surface was verified by FT-IR and the change in surface hydrophilicity was estimated by the contact angle of sessile drops of ethylene glycol on Pal tablets. The extent of Pal dispersion and the degree of improvement in both the mechanical and thermal properties were related to the surface treatment of Pal. Modified Pals were better dispersed during melt processing and improved Young's modulus and strength; however, maximum deformation tended to decrease. The thermal stability of PP/PP-g-MAH/Pal nanocomposites was considerably improved with the content of modified Pals. The degree of crystallinity increased with Pal content, regardless of the surface modification. Surfactant modified Pal exhibited better results in comparison with silane Pal; it is possible that longer alkyl chains from surfactant molecules promoted interactions with polymer chains, thereby improving nanofiller dispersion and enhancing the properties.

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“…Despite the importance of melt intercalation, the effects of processing conditions on the material's properties are not studied very extensively [5]. Most studies deal with the MMT modification and the better dispersion of organoclay in the polymer matrix and also different compatibilizers besides PP‐ g ‐Ma were investigated [6–12].…”

Section: Introductionmentioning

confidence: 99%

“…The author also summarized that significant improvements such as mechanical and barrier properties, thermal stability and flame retardance were established with exfoliated structures [4]. Furlan et al [5] showed the importance of the screw geometries on the property profile of the PP nanocomposite filled with MMT. The difference could be observed in the morphology and in the mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the influence of processing conditions on the thermal, rheological and mechanical behavior of polypropylene nanocomposites

Mattausch

Laske

Đuretek

et al. 2012

Polymer Engineering & Sci

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The use of polypropylene (PP)‐layered silicate nanocomposite has attracted great interest in the polymer industry over the last years. On one hand, PP is widely used in many fields of applications because of good performance and cost. On the other hand, the major advantage of layered silicate nanofiller in the polymer matrix is the small amount of filler (<5 wt%) needed to enhance various properties such as Young's modulus. The most commonly used layered silicates are organomodified montmorillonite (MMT). In this study, a PP/organoclay nanocomposite, filled with layered silicate Nanofil SE3010 (1 and 5 wt%), provided by Rockwood Additives, USA, was used. The polymer nanocomposites were prepared via melt intercalation in a laboratory kneader. The compatibilizer (PP grafted with maleic acid anhydride) admixture content relative to the organoclay content (1 and 5 wt%) was chosen at a ratio of 1:1 (clay:compatibilizer). The influence of different processing conditions (rotation speed and residence time) on the thermal, rheological, and mechanical properties and the interlayer distance was investigated. It was the target to determine whether a short and intensive or a long and soft process performs better. Different properties prefer different states of dispersion of MMT in the polymer matrix. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers

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Effect of processing conditions on the mechanical and thermal properties of high-impact polypropylene nanocomposites

Cited by 26 publications

References 36 publications

Melt Processing and Characterization of Nanocomposites of PP/Na⁺MMT Blending with Hyperbranched Polyester

Melt Processing and Characterization of Nanocomposites of PP/Na⁺MMT Blending with Hyperbranched Polyester

Effect of Surface Modification of Palygorskite on the Properties of Polypropylene/Polypropylene-g-Maleic Anhydride/Palygorskite Nanocomposites

Investigation of the influence of processing conditions on the thermal, rheological and mechanical behavior of polypropylene nanocomposites

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Effect of processing conditions on the mechanical and thermal properties of high-impact polypropylene nanocomposites

Cited by 26 publications

References 36 publications

Melt Processing and Characterization of Nanocomposites of PP/Na+MMT Blending with Hyperbranched Polyester

Melt Processing and Characterization of Nanocomposites of PP/Na+MMT Blending with Hyperbranched Polyester

Effect of Surface Modification of Palygorskite on the Properties of Polypropylene/Polypropylene-g-Maleic Anhydride/Palygorskite Nanocomposites

Investigation of the influence of processing conditions on the thermal, rheological and mechanical behavior of polypropylene nanocomposites

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Melt Processing and Characterization of Nanocomposites of PP/Na⁺MMT Blending with Hyperbranched Polyester

Melt Processing and Characterization of Nanocomposites of PP/Na⁺MMT Blending with Hyperbranched Polyester