Influence of nanofillers on the deformation process in layered silicate/polyamide-12 nanocomposites

Kim, G-M Gyeong; Dh, Lee; Hoffmann, Botho; Kreßler, Jörg; Stöppelmann, G.

doi:10.1016/s0032-3861(00)00468-7

Cited by 292 publications

(200 citation statements)

References 32 publications

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“…Moreover, particles' delamination prevails upon matrix deformation when particles are large [71]. In the case of clay nanoplatelets poorly dispersed into PA12, Kim et al [72] report that the deformation process is governed by the formation of microvoids inside the filler tactoids, which toughens the material. The mechanism is illustrated in Figure 13.…”

Section: Tensile Propertiesmentioning

confidence: 99%

“…Moreover, the craze formation does not toughen the materials as for exfoliated nanocomposites, even if the crazes are located close to the layers as well. For intercalated nanocomposites, stress fields created around the crazes may overlap as the platelets are not homogeneously dispersed [69,72]. Then, adjacent microvoids may coalesce and favor the development of cracks which lead to the material breakdown as illustrated in Figure 13.…”

Section: Tensile Propertiesmentioning

confidence: 99%

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Efficient one-step melt-compounding of copolyetheramide/pristine clay nanocomposites using water-injection as intercalating/exfoliating aid

Touchaleaume¹,

Soulestin²,

Sclavons³

et al. 2011

Express Polym. Lett.

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Abstract. Polyether-block-amide (PEBA) /clay nanocomposites were prepared water-assisted by twin-screw extrusion. Both organomodified and pristine (i.e. purified but non-modified) montmorillonite clays were used. A high-pressure differential scanning calorimetry analysis carried out in the processing conditions demonstrated that PEBA/water blend exhibits some miscibility and that amide blocks and water behave as a single phase. In addition to a significant decrease of the melting temperature, water injected into the melt plays a key role among the filler dispersion and prevents the matrix from degradation during melt-extrusion. This process enables the compounding of pristine clay-based nanocomposites whose dispersion state is high enough for the resulting mechanical performances in tension to be at least equivalent to what is reached with organomodified clay. Effects of the nanofiller dispersion onto the macromolecules' mobility are detailed and fracture mechanisms are identified for the various structures.

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Section: Tensile Propertiesmentioning

confidence: 99%

Section: Tensile Propertiesmentioning

confidence: 99%

Efficient one-step melt-compounding of copolyetheramide/pristine clay nanocomposites using water-injection as intercalating/exfoliating aid

Touchaleaume¹,

Soulestin²,

Sclavons³

et al. 2011

Express Polym. Lett.

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“…Kim et al 93 dispersed Somasif ME-100 in ADA, which was then polymerized. TEM revealed that FM formed ca.…”

Section: Polyamide Matrixmentioning

confidence: 99%

“…Thus, most likely exfoliation of FM was only partial. Of the six tested FM compositions M5 shows the best performance.Kim et al 93 dispersed Somasif ME-100 in ADA, which was then polymerized. TEM revealed that FM formed ca.…”

mentioning

confidence: 99%

Synthetic, layered nanoparticles for polymeric nanocomposites (PNCs)

Utracki

Sepehr

Boccaleri

2007

Polymers for Advanced Techs

381

252

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Synthetic, layered nano-particles for polymeric nanocomposites (PNC's)Utracki, L. A.; Sepehr, M.; Boccaleri, E.Contact us / Contactez nous: nparc.cisti@nrc-cnrc.gc.ca.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=fr L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site Web page / page Web http://dx.doi.org/10.1002/pat.852 http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=15774991&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=15774991&lang=fr LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en This review discusses preparation and use of the synthetic layered nanoparticles in polymer matrices, i.e., in the polymeric nanocomposites (PNCs). Several types of synthetic or semi-synthetic layered materials are considered, namely the phyllosilicates (clays), silicic acid (magadiite), layered double hydroxides (LDHs), zirconium phosphates (ZrPs), and di-chalcogenides. The main advantage of synthetic clays is their chemical purity (e.g. absence of amorphous and gritty contaminants, as well as arsenic, iron, and other heavy metals), white to transparent color that assures reproducibly of brightly colored products, as well as a wide range of aspect ratios, p ¼ 20 to £6000. Several large scale production facilities have been established. The synthetic clay and LDH industries are oriented toward big volume markets: catalysis, foodstuff, cosmetics, pharmaceuticals, toiletry, etc. The use of these materials in PNCs is limited to synthetic clays and LDHs, mainly for reinforcement, permeability control, reduction of flammability, and stabilization, e.g. during dehydrohalogenation of chlorinated macromolecules. The use of lamellar ZrPs and di-chalcogenides is at the laboratory stage of functional polymeric systems development, e.g. for electrically conductive materials, catalysts or support for catalysts, in photochemistry, molecular and chiral recognition, or in fuel cell technologies, etc. Copyright # 2007 John Wiley & Sons, Ltd.KEYWORDS: polymeric nanocomposites; nanoparticles; clay; layered double hydroxides; matrix POLYMERS FOR ADVANCED TECHNOLOGIES Polym. Adv. Technol. 2007; 18: 1-37 Published online in Wiley InterScience (www.interscience.wiley.com) DOI: 10.1002/pat.852 AUTHORS' BIOGRAPHIESDr Leszek A. Utracki was born and educated (up to Habilitation) in Poland. After the post-doctoral stage at USC in Los Angeles with Robert Simha he settled in Canada. His passionate research interest has been within the field of thermodynamics, rheology and processing of multicomponent, multiphase polymeric systems. During the 55 years in the profession he has published several hundred articles, book chapters, books, patents, etc., which has placed him on the ISI li...

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“…Recently, polymer nanocomposites attracted great attention due to their increased modulus and strength, improved thermal characteristics, especially their unexpected hybrid properties that are synergistically derived from the two components [1][2][3][4][5][6][7]. Because of the large boundary surface created by the nanofillers, polymer nanocomposites with new properties are possible to produce.…”

Section: Introductionmentioning

confidence: 99%

The role of clay-montmorillonite on thermal characteristics and morphology of electrospun PAN nanofibrous mats

Shami

Sharifi-Sanjani

2011

E-Polymers

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Polymer organic-inorganic hybrid nanofibers constitute a new class of materials in which the polymeric nanofibers are reinforced by uniformly dispersed inorganic particles having at least one dimension in nanometer-scale. In the present study, nanofibrous mats of neat and nanocomposite polyacrylonitrile (PAN) were fabricated by electrospinning process. Electrospun PAN and PAN/Na-MMT fibrous mats with the respective mean fiber diameter of about 220 and 160 nm were prepared. The influence of the clay-montmorillonite on the morphology and diameter of nanofibers was investigated by means of scanning electron microscope (SEM) and transmission electron microscope (TEM) techniques. The microscope techniques results suggested that the PAN/Na-MMT composite nanofibers showed the lower mean fiber diameter than the neat PAN nanofibers. Besides, the difference in nanoclay-content has a slight effect on the distribution of fibers diameter. Thermogravimetric analysis (TGA) results suggested that the introduction of clay-nanomaterials improve the decomposition onset and residual weight percentage of mats at about 31 C and 13 %, respectively. The results of X-ray diffraction (XRD) confirmed that the clay-montmorillonite layers were exfoliated in the polymer matrix. The exfoliation of clay layers was further supported by transition electron microscope (TEM) observations.

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Influence of nanofillers on the deformation process in layered silicate/polyamide-12 nanocomposites

Cited by 292 publications

References 32 publications

Efficient one-step melt-compounding of copolyetheramide/pristine clay nanocomposites using water-injection as intercalating/exfoliating aid

Efficient one-step melt-compounding of copolyetheramide/pristine clay nanocomposites using water-injection as intercalating/exfoliating aid

Synthetic, layered nanoparticles for polymeric nanocomposites (PNCs)

The role of clay-montmorillonite on thermal characteristics and morphology of electrospun PAN nanofibrous mats

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