Reactive processing of polystyrene‐co‐maleic anhydride/elastomer blends: Processing‐morphology‐property relationships

Willis, J. M.; Favis, Basil D.; Lunt, James

doi:10.1002/pen.760301711

Cited by 92 publications

(48 citation statements)

References 31 publications

(16 reference statements)

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“…This may be attributed to the effect of interfacial saturation of compatibilizer at a critical value of compatibilizer content above which the effect of compatibilizer on the domain size reduction levels off as has been observed in other systems. [12][13][14][15] Therefore, the higher effectiveness of compatibilizer in sample PP/E20/C4 may be due to the interfacial saturation occurring at this particular compatibilizer content (i.e., at 4 phr). In addition, the variation in viscosity ratio of the dispersed phase and the matrix caused by the incorporation of PP-g-MAH can also affect the domain size distribution.…”

Section: Effect Of Compatibilization On Morphologymentioning

confidence: 99%

Effect of compatibilizer on micromehanical deformations and morphology of dispersion in PP/PDMS blend

Prakashan

Gupta

Maiti

2007

J of Applied Polymer Sci

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Role of maleic anhydride grafted polypropylene (PP-g-MAH) in interface modification in polypropylene (PP)/poly(dimethylsiloxane) (PDMS) elastomer blend has been investigated in this article through its effects on morphology of dispersion, micromechanical deformations such as voiding, crazing, shear yielding, fibrillation, and tensile behavior. During tensile deformation, PP/PDMS blend without the compatibilizer showed debonding at the elastomer-matrix interface and it induced shear yielding and subsequently fibrillation in the matrix. The compatibilizer improved the interfacial adhesion between the PDMS domains and PP matrix, which prevented the debonding at elastomer-matrix interface and the resulting shear yielding, and fibrillation was absent and rather caused extensive crazing in the matrix. Addition of PP-g-MAH reduced the size of dispersed PDMS domains, and narrowed the domain size distribution, which is attributed as an effect of interfacial adhesion produced by PP-g-MAH. Stress-strain curve and fibrillation also show similar effect of the interfacial adhesion caused by the compatibilizer. All these observations consistently lead to conclude that PP-g-MAH acts as a good compatibilizer for PP/PDMS blend.

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Section: Effect Of Compatibilization On Morphologymentioning

confidence: 99%

Effect of compatibilizer on micromehanical deformations and morphology of dispersion in PP/PDMS blend

Prakashan

Gupta

Maiti

2007

J of Applied Polymer Sci

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“…Taken together, these [14][15][16] data clearly indicate the importance of interfacial saturation for impact strength improvement for a variety of blend systems. The Izod impact data, shown in Figure 6, shows that above the critical concentration the measure of toughness increases slightly with increasing compatibilizer levels until about 15% of compatibilizing agent.…”

Section: Impact Strength As a Function Of The Concentration Of Compatmentioning

confidence: 79%

Interface/morphology/property relationships in polyamide-6/ABS blends

Lacasse

Favis

1999

Adv. Polym. Technol.

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“…42 Several studies have been reported on interfacial saturation by the addition of compatibilizers. [43][44][45][46][47] This study and almost all the reported studies on the physical and reactive compatibilization of immiscible polymer blends and the theoretical prediction of Noolandi and Hong 48 -50 suggest that a critical concentration of the compatibilizer is required to saturate the interface of binary polymer blends. Above this critical concentration, the compatibilizer may not modify the interface but forms micelles in the bulk phase.…”

Section: Morphology and Dynamic Mechanical Properties Of The Compatibmentioning

confidence: 96%

Correlation between the morphology and dynamic mechanical properties of ethylene vinyl acetate/linear low‐density polyethylene blends: Effects of the blend ratio and compatibilization

Moly¹,

Bhagawan

Groeninckx

et al. 2006

J of Applied Polymer Sci

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ABSTRACT:The effects of the blend composition and compatibilization on the morphology of linear low-density polyethylene (LLDPE)/ethylene vinyl acetate (EVA) blends were studied. The blends showed dispersed/matrix and cocontinuous phase morphologies that depended on the composition. The blends had a cocontinuous morphology at an EVA concentration of 40 -60%. The addition of the compatibilizer first decreased the domain size of the dispersed phase, which then leveled off. Two types of compatibilizers were added to the polymer/polymer interface: linear lowdensity polyethylene-g-maleic anhydride and LLDPE-g phenolic resin. Noolandi's theory was in agreement with the experimental data. The conformation of the compatibilizer at the blend interface could be predicted by the calculation of the area occupied by the compatibilizer molecule at the interface. The effects of the blend ratio and compatibilization on the dynamic mechanical properties of the blends were analyzed from Ϫ60°C to ϩ35°C. The experiments were performed over a series of frequencies. The area under the curve of the loss modulus versus the temperature was higher than the values obtained by group contribution analysis. The loss tangent curve showed a peak corresponding to the glass transition of EVA, indicating the incompatibility of the blend system. The damping characteristics of the blends increased with increasing EVA content because of the decrease in the crystalline volume of the system. Attempts were made to correlate the observed viscoelastic properties of the blends with the morphology. Various composite models were used to model the dynamic mechanical data. Compatibilization increased the storage modulus of the system because of the fine dispersion of EVA domains in the LLDPE matrix, which provided increased interfacial interaction. Better compatibilization was effected at a 0.5-1% loading of the compatibilizer. This was in full agreement with the dynamic mechanical spectroscopy data. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4526 -4538, 2006

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Reactive processing of polystyrene‐co‐maleic anhydride/elastomer blends: Processing‐morphology‐property relationships

Cited by 92 publications

References 31 publications

Effect of compatibilizer on micromehanical deformations and morphology of dispersion in PP/PDMS blend

Effect of compatibilizer on micromehanical deformations and morphology of dispersion in PP/PDMS blend

Interface/morphology/property relationships in polyamide-6/ABS blends

Correlation between the morphology and dynamic mechanical properties of ethylene vinyl acetate/linear low‐density polyethylene blends: Effects of the blend ratio and compatibilization

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