Improvement of organoclay dispersion into polystyrene-based nanocomposites by incorporation of SBS and maleic anhydride-grafted SBS

Dike, Ali Sinan; Yilmazer, Ülkü

doi:10.1177/0892705719882998

Cited by 17 publications

(14 citation statements)

References 54 publications

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“…In another study, PS has been blended with 25% SBS and 1% SBS-g-MA and maximum 25% increase in impact resistance was achieved. 4 The PS polymer has been converted to polymer nanocomposites with different types of nanoparticles. 15,16 Halloysite nanotubes (HNTs) is a type of aluminosilicate clay with a hollow tubular geometry.…”

Section: Introductionmentioning

confidence: 99%

“…1 Melt compounding of PS with various types of thermoplastic elastomers has been done to overcome this disadvantage. 2 –4 Rubber toughening by elastomeric inclusions in the polymer matrix is one of the most efficient methods of toughening utilized for rigid polymers. 5 –7 The high-impact PS known as a commercial polybutadiene rubber–toughened polymer has been widely used in industrial applications such as packaging, toys, bottles, housewares, household electronic appliances, containers, and light-duty industrial components.…”

Section: Introductionmentioning

confidence: 99%

“…In another study, PS has been blended with 25% SBS and 1% SBS-g-MA and maximum 25% increase in impact resistance was achieved. 4…”

Section: Introductionmentioning

confidence: 99%

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Preparation of tough, high modulus, and creep-resistant PS/SIS/halloysite blend nanocomposites

Tekay

2020

Journal of Thermoplastic Composite Materials

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In this work, polystyrene (PS)/poly(styrene-b-isoprene-b-styrene) (SIS)/organophilic halloysite nanotube (Org-HNT) blend nanocomposites were produced by melt compounding technique. The significant improvements in both toughness and impact strength values were obtained in PS/SIS blends containing 20%, 30%, and 40% SIS elastomer as compared to neat PS. Among them, PS-30SIS blend with a co-continuous morphology exhibited moderate tensile and impact properties and its nanocomposites having 3, 5, 7 and 10 phr Org-HNT were prepared through the melt mixing method. All the nanocomposites exhibited continuous/fibrillar morphologies with smaller elastomer domains and higher tensile modulus and toughness as compared to PS-30SIS blend. Among them, the nanocomposite having 7 phr Org-HNT and 30% SIS phase (7H-30SIS) exhibited the highest impact strength with enhanced tensile properties. The same nanocomposite exhibited about 21% and 100% increments in the modulus and toughness in comparison to its blend, respectively. The 7H-30SIS nanocomposite increased storage moduli of PS-30SIS blend at glass transition regions of both polyisoprene and PS phases and also at room temperature. Moreover, the rubbery storage moduli of the nanocomposites were found to be about 37% and 53% higher for 7 and 10 phr Org-HNT loaded nanocomposites, respectively, in comparison with that of PS-30SIS blend. The creep deformation and permanent deformation of the blend both decreased via introduction of the nanotubes which is in agreement with aforementioned improvements in the stiffness.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation of tough, high modulus, and creep-resistant PS/SIS/halloysite blend nanocomposites

Tekay

2020

Journal of Thermoplastic Composite Materials

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“…In general, additition of elastomeric compatibilizers 2210 and 8840 had little positive effect on the intercalation or exfoliation of silicate layers. The interaction between the functional groups of the elastomeric materials and hydroxyl groups on the clay surface may be weakened due to heat treatment or the decomposition of organic modifier, so that some portion of the ammonia salts may have exuded from the clay gallery, leading to a decrease in interlayer spacing [25,26]. Another reason of the collapse in basal spacing may be explained by the applied high pressure during the injection molding process [27].…”

Section: Resultsmentioning

confidence: 99%

Mechanical, thermal and rheological characterization of polystyrene/organoclay nanocomposites containing aliphatic elastomer modifiers

Dike

Yilmazer

2020

Mater. Res. Express

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In this study, organoclay containing polystyrene (PS) based nanocomposites were prepared by extrusion in the presence of aliphatic elastomer modifiers. Three different types of aliphatic elastomeric materials and three different types of organoclays were used. Their effects on the morphology, and mechanical, thermal, and rheological properties of PS were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and x-ray diffraction (XRD), tensile and impact tests, differential scanning calorimetry (DSC), and melt flow index measurements, respectively. Lotader AX8900, Lotader AX8840 and Lotader 2210 were chosen as the aliphatic elastomeric compatibilizers; and Cloisite 15 A, Cloisite 25 A and Cloisite 30B were chosen as the organoclays. The organoclay content was kept constant at 2 wt% and elastomer content was kept constant at 5 wt% throughout the study. Significant improvement is observed on the basal spacing for 30B containing samples according to XRD analysis. SEM studies indicate that the clay particles mostly reside between the PS matrix and the spherical elastomeric domains. Additions of elastomer and organoclay decrease the MFI value of PS. Mechanical test results show that, improvement is observed in elongation at break of unfilled PS with the addition of elastomers. Organoclay addition increases the tensile modulus of PS. According to thermal characterizations, the glass transition temperature (T g ) of PS decreases with elastomer addition, whereas organoclay addition shifts T g values to higher temperatures.

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“…The use of organoclay (Mag-CTA + ) has an impact on the morphology of the prepared nanocomposites, especially in the dispersion of in-situ polymerization methods. For these reasons, several nanocomposites based on polymers and organoclay were prepared [ 20 , 21 , 22 , 23 , 24 ]. By reviewing the literature, we found that no previously published work has described the use of natural clay as a nano-reinforcing filler in the preparation of green-nanocomposites based on rosin-limonene copolymer.…”

Section: Introductionmentioning

confidence: 99%

Green Nanocomposites from Rosin-Limonene Copolymer and Algerian Clay

et al. 2020

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Green nanocomposites from rosin-limonene (Ros-Lim) copolymers based on Algerian organophilic-clay named Maghnite-CTA+ (Mag-CTA+) were prepared by in-situ polymerization using different amounts (1, 5 and 10% by weight) of Mag-CTA+ and azobisisobutyronitrile as a catalyst. The Mag-CTA+ is an organophilic montmorillonite silicate clay prepared through a direct exchange process; the clay was modified by ultrasonic-assisted method using cetyltrimethylammonuim bromide in which it used as green nano-filler.The preparation method of nanocomposites was studied in order to determine and improve structural, morphological, mechanical and thermal properties ofsin.The structure and morphology of the obtained nanocomposites(Ros-Lim/Mag-CTA+) were determined using Fourier transform infrared spectroscopy, X-ray diffraction, scanning electronic microscopy and transmission electronic microscopy. The analyses confirmed the chemical modification of clay layers and the intercalation of rosin-limonene copolymer within the organophilic-clay sheets. An exfoliated structure was obtained for the lower amount of clay (1% wt of Mag-CTA+), while intercalated structures were detected for high amounts of clay (5 and 10% wt of Mag-CTA+). The thermal properties of the nanocomposites were studied by thermogravimetric analysis (TGA) and show a significant improvement inthe thermal stability of the obtained nanocomposites compared to the purerosin-limonene copolymer (a degradation temperature up to 280 °C).

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Improvement of organoclay dispersion into polystyrene-based nanocomposites by incorporation of SBS and maleic anhydride-grafted SBS

Cited by 17 publications

References 54 publications

Preparation of tough, high modulus, and creep-resistant PS/SIS/halloysite blend nanocomposites

Preparation of tough, high modulus, and creep-resistant PS/SIS/halloysite blend nanocomposites

Mechanical, thermal and rheological characterization of polystyrene/organoclay nanocomposites containing aliphatic elastomer modifiers

Green Nanocomposites from Rosin-Limonene Copolymer and Algerian Clay

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