Mechanical behavior related to the phase morphology of PC/SAN polymer blends

Quintens, D; Groeninckx, Gabriël; Guest, M; Aerts, L.

doi:10.1002/pen.760302208

Cited by 98 publications

(41 citation statements)

References 22 publications

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“…This value is 12% lower than in case of blends without compatibilizer. This phenomenon can be supported by the fact that the finer morphological structure leads to a transition from brittle to ductile fracture [78], as it can be seen in Fig. 2.…”

Section: Tensile Testssupporting

confidence: 56%

Investigation of compatibilization effects of SEBS-g-MA on polystyrene/polyethylene blend with a novel separation method in melted state

Dobrovszky

Ronkay

2016

Polym. Bull.

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Abstract:Preparing polymer blends is an effective way to tailor the good properties of plastics but the most commonly used polymers are incompatible with each other. Therefore, to reduce the interfacial tension and to achieve finer and stable morphology, a suitable copolymer or compatibilizer has to be added to blends in order to establish new interactions between the phases. However, it is difficult to determine the required amount of compatibilizers in polymer blends. As an outcome of the present research a novel separation method was developed, where the blends are investigated in melted state, utilising centrifugal force to determine the adequacy of compatibilizers. The effectiveness of styrene/ethylene/butylene/styrene block copolymer grafted with maleic anhydride (SEBS-g-MA) was verified by blending two immiscible plastics: polystyrene (PS) and high density polyethylene (HDPE). FTIR measurements were carried out to support the results of optical microscopy regarding the purity of separation. Comparing the results of morphology, rheology and mechanical properties with the novel separation method, it seems that investigation of compatibilization effect in a melted state would be suitable for predicting the adequacy of compatibilizer in blend. The minimum required amount of compatibilizer was also detectable, wherein the stress-strain curves begins to change significantly and the impact properties starting to improve in PS/HDPE blends.Keywords: compatibilization; polymer separation; polymer blend; centrifugal force; polymers in melted state.Acknowledgements: This research was realized in the framework of TÁMOP 4.2.4. A/1-11-1-2012-0001 "National Excellence Program -Elaborating and operating an inland student and researcher personal support system".

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Section: Tensile Testssupporting

confidence: 56%

Investigation of compatibilization effects of SEBS-g-MA on polystyrene/polyethylene blend with a novel separation method in melted state

Dobrovszky

Ronkay

2016

Polym. Bull.

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“…The change from dispersed phase morphology in N 30 to co-continuous morphology in N 50 leads to an increase in modulus. In co-continuous structures the storage modulus-temperature dependence reflects a greater contribution of both components, whereas in dispersed structures, the blend modulus is dominated by the matrix component [21]. The relationship between storage modulus at a given temperature can also determine the region of phase inversion and the existence of co-continuous structures, as shown by Dedecker and Groeninckx [22] for reactively compatibilized PA6/PMMA blends.…”

Section: Effect Of Blend Ratio (Uncompatibilized Blends)mentioning

confidence: 80%

Dynamic mechanical analysis of binary and ternary polymer blends based on nylon copolymer/EPDM rubber and EPM grafted maleic anhydride compatibilizer

George¹,

Komalan²,

Kumar³

et al. 2007

Express Polym. Lett.

117

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Abstract. The dynamic mechanical properties such as storage modulus, loss modulus and damping properties of blends of nylon copolymer (PA6,66) with ethylene propylene diene (EPDM) rubber was investigated with special reference to the effect of blend ratio and compatibilisation over a temperature range -100°C to 150°C at different frequencies. The effect of change in the composition of the polymer blends on tanδ was studied to understand the extent of polymer miscibility and damping characteristics. The loss tangent curve of the blends exhibited two transition peaks, corresponding to the glass transition temperature (Tg) of individual components indicating incompatibility of the blend systems. The morphology of the blends has been examined by using scanning electron microscopy. The Arrhenius relationship was used to calculate the activation energy for the glass transition of the blends. Finally, attempts have been made to compare the experimental data with theoretical models.

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“…All three PC-ABS GRC blends show lower ductile to brittle transition temperatures than the PC-ABS 541 blends. At 90% PC the transition is at about -5O"C, and for the blends with 50 and 70% PC, the transition temperature as defined above appears to be about -6O"C, which is 5°C below the reported Tg of the rubber (at 1 Hz) in ABS GRC.…”

Section: Low-temperature Izod Impact Strength (Standard Notch) For Blmentioning

confidence: 88%

Influence of ABS type on morphology and mechanical properties of PC/ABS blends

Lombardo

Keskkula

Paul

1994

J of Applied Polymer Sci

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Texas 7871 2 SYNOPSISThe morphology and the mechanical properties of polycarbonate (PC) blends with different acrylonitrile-butadiene-styrene (ABS) materials were investigated. PC/ABS blends based on a mass-made ABS with 16% rubber and large (0.5-1 pm) rubber particles are compared to blends based on an emulsion-made ABS with 50% rubber and small, monodisperse (0.12 pm) rubber particles over the full range of blend compositions. The blends with the bulk ABS showed excellent impact strength for most compositions, and those containing 50 and 70% PC exhibited ductile to brittle transition temperatures below that of PC. The blends with the emulsion ABS showed excellent toughness in sharp notch Izod impact tests a t room temperature and in standard notch Izod impact tests a t low temperatures near the Tg of the rubber. By melt blending the various ABS materials with a styrene-acrylonitrile (SAN 25) copolymer, materials with lower rubber concentrations were obtained. These materials were used in blends with PC to make comparisons at constant rubber concentrations of 5,10, and 15%. The results of this investigation show that brittle ABS materials can produce tough PC-ABS blends. It is apparent that small rubber particles toughen PC-ABS blends a t lower rubber concentrations and a t lower temperatures than is possible with large rubber particles. However, additional work is needed to understand the nature of toughening in these PC-ABS blends with different rubber phase morphologies. It is of particular interest to understand the exceptional ductility of some of the blends at low temperatures.

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Mechanical behavior related to the phase morphology of PC/SAN polymer blends

Cited by 98 publications

References 22 publications

Investigation of compatibilization effects of SEBS-g-MA on polystyrene/polyethylene blend with a novel separation method in melted state

Investigation of compatibilization effects of SEBS-g-MA on polystyrene/polyethylene blend with a novel separation method in melted state

Dynamic mechanical analysis of binary and ternary polymer blends based on nylon copolymer/EPDM rubber and EPM grafted maleic anhydride compatibilizer

Influence of ABS type on morphology and mechanical properties of PC/ABS blends

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