Progress in Polypropylene Nanocomposite Development

Leuteritz, Andreas; Pospiech, Doris; Kretzschmar, Bernd; Willeke, Meike; Jehnichen, Dieter; Jentzsch, Ulrike; Grundke, Karina; Janke, Andreas

doi:10.1002/adem.200320139

Cited by 48 publications

(47 citation statements)

References 12 publications

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“…The procedure of grafting of poly(p-vinylphenylsulfonylhydrazide-co-butyl acrylate) onto nanosilica was similar to that of grafting poly (p-vinyl-3 Cai et al -eXPRESS Polymer Letters Vol.1, No.1 (2007) [2][3][4][5][6][7] Figure 1. Schematic drawing of the proposed route for making nano-SiO2/PP composites…”

Section: Synthesis Of Grafted Nano-siomentioning

confidence: 99%

“…Polymer/inorganic nanocomposites prepared via melt compounding have become a popular topic in material science because of their markedly improved properties and relatively facile preparation procedures [1,2]. Enhanced characteristics in such composites have so far been reported as a synergistic contribution resulting from the effective combination of nanoparticles and polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

“…An interlayer with proper flexibility ensured an overall enhancement of mechanical properties, especially impact strength, of the nanocomposites. : nanomaterials, processing technologies, nanoparticles, nanocomposites, interfacial effect eXPRESS Polymer Letters Vol.1, No.1 (2007) [2][3][4][5][6][7] Available online at www.expresspolymlett.com DOI: 10.3144/expresspolymlett.2007.2 defoaming of the compounds was not necessary prior to injection molding. It implies that this technique could lead to deagglomeration of the nanoparticles when nanocomposites are being manufactured, without side effect that might deteriorate performance.…”

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confidence: 99%

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Interfacial effects in nano-silica/polypropylene composites fabricated by in-situ chemical blowing

Cai¹,

L²,

Rong³

et al. 2007

Express Polym. Lett.

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Abstract. By mixing macromolecular blowing agent grafted nano-SiO2 with polypropylene (PP) melt, the nanoparticle agglomerates can be pulled apart due to the in-situ bubble-stretching resulting from gasification of the side foaming groups on the grafted polymer. The present work evaluated the interfacial effect in the PP based nanocomposites prepared using the aforesaid technique through introducing rubbery components to the backbone of the grafted polymer chains. The results indicated that deagglomeration of the nanoparticles was not bound to yield the highest properties of the composites. The positive effect of the nanoparticles was brought into full play because of the joint contributions of particles dispersion status and interfacial interaction. An interlayer with proper flexibility ensured an overall enhancement of mechanical properties, especially impact strength, of the nanocomposites. : nanomaterials, processing technologies, nanoparticles, nanocomposites, interfacial effect eXPRESS Polymer Letters Vol.1, No.1 (2007) [2][3][4][5][6][7] Available online at www.expresspolymlett.com DOI: 10.3144/expresspolymlett.2007.2 defoaming of the compounds was not necessary prior to injection molding. It implies that this technique could lead to deagglomeration of the nanoparticles when nanocomposites are being manufactured, without side effect that might deteriorate performance. For polymer-based nanocomposites, an appropriate surface treatment of inorganic nanoparticles should not only improve dispersion of the fillers, but also bring about notable influence on the interfacial characteristics, and subsequently enhance the mechanical properties of the ultimate composites [6]. Considering that graft treatment of nanoparticles leads to specific interfacial structures that can be tailored by changing graft monomers and graft conditions [7], the authors of the present work planned to introduce polymer chain units with relatively higher molecular mobility (i.e., poly(butyl acrylate)) into the aforesaid grafted polymeric foaming agent poly(p-vinylphenylsulfonylhydrazide) through copolymerization. It is hoped that the stiffness of the interlayer in the nanocomposites originally constructed by the grafted poly(p-vinylphenylsulfonylhydrazide) containing rigid phenyl groups can be somewhat balanced. In accordance with this idea, poly(p-vinylphenylsulfonylhydrazide-co-butyl acrylate) grafted nanosilica was synthesized. Afterwards, the treated nanoparticles were melt compounded with PP. With the help of in-situ bubble-stretching effect and the flexible interphase, agglomerated silica nanoparticles should be disconnected from each other and adhered to the matrix polymer via the grafted copolymer chains (Figure 1). In this paper, the feasibility of this technical route was analyzed by characterizing the grafted nano-silica and their influence on the structure and properties of PP based composites. Keywords Experimental MaterialsSilica (Aerosil 200) was supplied by Degussa Co., Germany with an average diameter of 12 nm and ...

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Section: Synthesis Of Grafted Nano-siomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Interfacial effects in nano-silica/polypropylene composites fabricated by in-situ chemical blowing

Cai¹,

L²,

Rong³

et al. 2007

Express Polym. Lett.

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“…The nature of solvents is critical to facilitate the insertion of organic materials (in this case: PEG-ML between the silicate layers, the polarity of the medium being a determining factor for intercalations. Preheated clay was dispersed in water at 3% concentration and heated to 75°C for 3 h [19,25]. The amount of intercalant was calculated according to cation exchange capacity of Na + -MMT (cation exchange capacity of clay = 92.6 meq/100 g of clay).…”

Section: Treatment Of Clay With Poly(ethylene Glycol) Monolauratementioning

confidence: 99%

Oxygen barrier property of polypropylene-polyether treated clay nanocomposite

Pannirselvam¹,

Genovese²,

Jollands³

et al. 2008

Express Polym. Lett.

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Abstract. Polypropylene (PP) nanocomposites were obtained by solution blending of polyether treated montmorillonite and PP, with a coupling agent of maleic anhydride grafted polypropylene (PP-g-MA). The composition of the inorganic clay was varied in 1, 2 and 5 phr (parts of clay per hundred of PP by mass) while films of the composites were obtained via compression molding. Wide-angle X-ray scattering (WAXS) showed nanocomposites in which silicate layers were exfoliated and intercalated with respect to the different clay ratios. The morphology and gas permeability of hybrids prepared with organoclay were compared. Morphological studies using transmission electron microscopy showed most clay layers were dispersed uniformly in the PP matrix. Some tactoids of agglomerated nanoparticles were detected, as clay content increased. The oxygen permeability for all the hybrids for clay loadings were reduced by 30% of the corresponding values for pure PP.

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“…The reason for this different behavior from conventional composites is expected to be the enormous interfacial area, which is accessible only in the intercalated or better exfoliated state. But so far, especially with non-polar polymer matrices such as PP, there are many difficulties impeding a market launch of nanocomposites, although some companies announced the preparation and application of nanocomposites 17 . The micrograph of the polypropylene film Figure 4A shows the surface of the film and the alignment by this processing.…”

Section: Resultsmentioning

confidence: 99%

Processing and antimicrobial efficacy of polypropylene/montmorillonite/silver nanocomposites as food packaging films

Oliani¹,

Komatsu²,

Lincopán³

et al. 2016

AIP Conference Proceedings

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Multifunctional chitosan nanocomposites: The effect of silver supported on montmorillonite platelets on barrier and mechanical properties AIP Conference Proceedings 1599, 442 (2014) Abstract -The aim this study was to use nanocomposites of polypropylene (PP), montmorillonite (MMT) and silver nanoparticles (AgNPs), prepared by melt intercalation in a twin-screw extruder, as a food packaging bactericide material. The use of nanoclay and nanosilver as additives for polymer matrices requires, in some cases (with non-polar matrices) the use of a compatibilizer agent which will act as a bridge or permanent buffer for nanoclay-nanosilver-matrix interaction. As compatibilizer agent it has been used a propylene graft maleic anhydride copolymer (PP-g-MA). The nanocomposites were evaluated by differential scanning calorimetry (DSC), X-Rays diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and determination of antibacterial activity. The results indicate the formation of microstructures predominantly exfoliated. Further, the antibacterial properties of the films were investigated against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive) bacteria.

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Progress in Polypropylene Nanocomposite Development

Cited by 48 publications

References 12 publications

Interfacial effects in nano-silica/polypropylene composites fabricated by in-situ chemical blowing

Interfacial effects in nano-silica/polypropylene composites fabricated by in-situ chemical blowing

Oxygen barrier property of polypropylene-polyether treated clay nanocomposite

Processing and antimicrobial efficacy of polypropylene/montmorillonite/silver nanocomposites as food packaging films

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