Influence of the epoxidation degree of a polystyrene–polybutadiene–polystyrene (SBS) triblock copolymer on the compatibilization with an organomodified nanoclay

Silva, Patrícia A. da; Pistor, Vinícius; Gonçalves, Gustavo Petry Oliveira; Santos, Karina Silva dos; Oliveira, Ricardo Vinícius Bof de; Mauler, Raquel Santos

doi:10.1007/s10853-014-8054-1

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…According to these data, organoclay additions shift T g of unfilled PS to higher temperatures. Segmental motion of the PS chains may be prevented by the intercalated or exfoliated clay layers and this may lead to increase in T g values [36][37][38][39][40]. On the other hand, addition of elastomers yields slightly lower T g values with respect to the T g of PS.…”

Section: Dsc Analysismentioning

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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Section: Dsc Analysismentioning

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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“…With the ability to control nano-ordered structures, block copolymer can be promising template matrices for selective dispersion of nanoparticles with competitive properties [4,5]. Many publications were related to block copolymer-based nanocomposites with tailored dispersion of nanofillers [6][7][8][9]. Montmorillonite (MMT), known as clay, is toxicologically safe nanofiller with layered silicates structure [10], while can bring a remarkable improvement in physical, mechanical [11] and barrier properties [12][13][14] of most polymers, even at very low concentration.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a long-alkyl-chain silane grafted organic montmorillonite and its nanocomposite with SEBS

Zhou

Shi

et al. 2016

Polym. Bull.

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In this study, a modified montmorillonite (W-H-OMMT) was prepared by intercalating pristine montmorillonite using a phosphorus salt and a subsequent grafting using a long-alkyl-chain silane, and the nanocomposites with poly[styrene-(ethylene-co-butylene)-styrene] (SEBS) were prepared by melt blending. The pristine and the modified MMT were characterized by XRD, FT-IR, XPS and SEM. The morphology of the SEBS nanocomposites was studied using XRD, SEM and TEM, and the results can be correlated well with transparency, color, surface contact angle, rheological behavior, thermal and mechanical properties of the nanocomposites. As compared with pristine and the modified clay, more uniform dispersion and improved compatibility are observed for the W-H-OMMT in the SEBS matrix, resulting in better transparency and more hydrophobic surface for the SEBS/W-H-OMMT nanocomposite. Better thermal stability, a synergetic effect in tensile strength and elongation at break were observed, which can be attributed to well dispersion of the W-H-OMMT, as well as perfect adhesion between the W-H-OMMT and the SEBS matrix from the enhanced molecular interaction between the long-alkyl chain and the SEBS molecules. Compared to pure SEBS, the strength and elongation of SEBS/W-H-OMMT nanocomposite increased by 8.5 and 7.6 %; meanwhile, the water contact angel and the 50 % weight loss temperature increased by 5.3 and 13.1 %, respectively. Appropriate silane grafted organic montmorillonite provided an efficient way for the overall performance improvement of SEBS.

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Effect of compatibilizer on morphology, rheology and properties of SEBS/clay nanocomposites

Yang

Zhou

et al. 2018

Polymer Testing

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Influence of the epoxidation degree of a polystyrene–polybutadiene–polystyrene (SBS) triblock copolymer on the compatibilization with an organomodified nanoclay

Cited by 4 publications

References 24 publications

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

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

Preparation of a long-alkyl-chain silane grafted organic montmorillonite and its nanocomposite with SEBS

Effect of compatibilizer on morphology, rheology and properties of SEBS/clay nanocomposites

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