Polypropylene/talc/SEBS (SEBS-g-MA) composites. Part 1. Structure

Denac, Matjaž; Šmit, Ivan; Musil, Vojko

doi:10.1016/j.compositesa.2005.01.022

Cited by 40 publications

(39 citation statements)

References 25 publications

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“…Moreover, it is known that PP volatilizes at lower temperatures in air than in an inert atmosphere. This is due to the initiation of the process through hydrogen abstraction from the polymer by oxygen (Denac et al, 2005;Jahani, 2010). The carbon radical of the chain created undergoes β scission of the carbon-carbon bond.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…When PP is heated in the presence of oxygen, it undergoes a radical peroxidation of its chains at low temperature (T b 200°C) (Denac et al, 2005). Moreover, it is known that PP volatilizes at lower temperatures in air than in an inert atmosphere.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…Even if the dispersion of natural talc is promoted by the addition of a coupling agent (Wah et al, 2000;Denac et al, 2005;Jahani, 2010), the size of the particles never reaches the nanometric scale. The mechanical route to produce finely ground particles has been employed by several researchers (Sanchez-soto et al, 1997).…”

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

Chemical modification routes of synthetic talc: Influence on its nucleating power and on its dispersion state

Fiorentino

Fulchiron

Bounor‐Legaré

et al. 2015

Applied Clay Science

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Section: Thermal Propertiesmentioning

confidence: 99%

Section: Thermal Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Chemical modification routes of synthetic talc: Influence on its nucleating power and on its dispersion state

Fiorentino

Fulchiron

Bounor‐Legaré

et al. 2015

Applied Clay Science

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“…The possible distribution states of A‐MWCNTs in these two series of ternary composites are proposed according to the rheological data. As strong polar affinity exists between A‐MWCNTs and SEBS‐MA, it is expectable that in general A‐MWCNTs will be preferentially distributed in the SEBS‐MA phase, similar to other ternary composite systems [ 35, 36]. As the SEBS‐MA content is low, the volume fraction that is favorable for accommodating CNTs is not enough for large amounts of nanotubes.…”

Section: Resultsmentioning

confidence: 99%

Acid‐modified carbon nanotubes distribution and mechanical enhancement in polystyrene/elastomer blends

Wang

et al. 2011

Polymer Engineering & Sci

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The incorporation of carbon nanotubes (CNTs) is expected as an effective path for tailoring mechanical properties of polymer blends. In this study, acid-modified multiwalled CNTs (A-MWCNTs) were introduced into polystyrene/maleic anhydride-g-(styrene-ethylenebutadiene-styrene) (PS/SEBS-MA) blends. By altering the mass ratio of PS/SEBS-MA from 80/20 to 60/40, the biphase structure of blend was changed from seaisland-like type to quasi co-continuous structure, of different mechanical behaviors. In 80/20 mass ratio, the impact strength was improved while the tensile strength was unchanged with increasing A-MWCNTs content, whereas a simultaneously toughening and strengthening effect was achieved for the compound with 60/40 mass ratio. Scanning electron microscopy, polarized light microscopy, dynamic mechanical analysis, and rheological measurements were carried out to detect the distribution of A-MWCNTs in the blends. The results demonstrated as increasing the nanotube loading from 0 to 3 wt%, A-MWCNTs might gradually migrate into continuous PS phase in 80/20 mass ratio, due to the low content of SEBS-MA, while they were totally packed in SEBS-MA region within the entire loading range used in 60/40 mass ratio due to its high content of SEBS-MA. This study provides guidance on the design and preparation of high performance ternary polymer/elastomer/inorganic filler composites. POLYM. ENG. SCI., 52:964-971, 2012. ª 2011 Society of Plastics Engineers FIG. 5. Shear frequency dependences of storage modulus (a) and (c), and complex viscosity (b) and (d) of PS/SEBS-MA/A-MWCNTs composites with different SEBS-MA compositions: 20 wt% (a) and (b), and 40 wt% (c) and (d).

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“…Eventually, the results confirmed the presence of SEBS-g-MAH encapsulated and disoriented planeparallel talc crystals more significantly than the SEBS domains. So far, some data have been reported on dealing with mechanical properties and morphology evolution within polymer systems while using non-reactive SEBS; as well, SEBS-g-MAH reactive compatibilizer precursors, definitely different at molecular weight, elasticity, and viscosity [24,25] . Occasionally, an organoclay plays an important role within ternary nanocomposites, as reported for poly(-trimethylene terephthalate)=EPDM-g-MAH systems [22] .…”

Section: Introductionmentioning

confidence: 99%

SEBS-g-MAH as a Reactive Compatibilizer Precursor for PP/PTT/SEBS Ternary Blends: Morphology and Mechanical Properties

Jazani

Ahmad

Jafari

et al. 2013

Polymer-Plastics Technology and Engineering

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This article highlights the effect of using maleic anhydride-assisted SEBS compatibilizer precursor on the morphology and mechanical properties of the polypropylene (PP)/poly (trimethylene terephthalate) (PTT)/poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) 70/15/15 ternary blends. In all ternary blends, the amounts of PP and PTT, respectively as the matrix and the primary minor components were kept constant at 70 and 15 wt%; in turn, the amount of constituent polymers within the secondary minor phase containing reactive maleic anhydride grafted SEBS (SEBS-g-MAH) and nonreactive SEBS was changed. The mentioned compatibilizing system was first melt-blended in a co-rotating twin screw extruder and then added into the blend. Theoretical models were also employed to make a comparison with experimental values obtained from morphology characterization through the ternary systems. Accordingly, it is found that the blend containing only non-reactive SEBS exhibited fine dispersion of core-shell particles; however, by diminishing SEBS to SEBS-g-MAH weight ratio, the morphology changed from the pure core-shell to a multi-phase system consisting of both core-shell and detached particles. Eventually, this transition in the phase morphology caused some consequences and/ or advantages on the mechanical properties, so that the blend consisting of 50/50 weight ratio of SEBS/SEBS-g-MAH exhibited the minimum value of modulus; in contrast, the impact strength of that sample was considerably higher than that of neat PP specimen. These alterations in mechanical properties could be ascribed to the formation of some especial microstructures, in another word, the impact of particle size and particle size distribution, which has been well-established through scanning electron micrographs.

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Polypropylene/talc/SEBS (SEBS-g-MA) composites. Part 1. Structure

Cited by 40 publications

References 25 publications

Chemical modification routes of synthetic talc: Influence on its nucleating power and on its dispersion state

Chemical modification routes of synthetic talc: Influence on its nucleating power and on its dispersion state

Acid‐modified carbon nanotubes distribution and mechanical enhancement in polystyrene/elastomer blends

SEBS-g-MAH as a Reactive Compatibilizer Precursor for PP/PTT/SEBS Ternary Blends: Morphology and Mechanical Properties

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