Syndiotactic polystyrene/high-density polyethylene blends compatibilized with SEBS copolymer: thermal, morphological, tensile, dynamic-mechanical, and ultrasonic characterization

Abis, Luigi; Abbondanza, Luigi; Braglia, R.; Castellani, Leonardo; Giannotta, Giorgio; Pò, Riccardo

doi:10.1002/1521-3935(20000901)201:14<1732::aid-macp1732>3.0.co;2-j

Cited by 25 publications

(28 citation statements)

References 18 publications

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“…Addition of PP to elastomers have no significant effect on the morphology of blends elastomer-polyolefin, this indicated that PP got entrapped inside the elastomeric phase forming particles [17] . In some cases cryogenic fracture surface is an efficient method to evaluate interactions between phases in blends [18,19] . Several studies of SEBS-polyolefinic blends report a phase separation between olefinic and elastomeric phases, when PP is in higher amount [17,20,21] .…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Thermal & morphological evaluation of linear and radial SEBS- polypropylene blends

et al. 2013

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Blending of two or even more immiscible polymers is a very useful method to obtain new polymeric materials with ordered and tailored properties. Thermoplastic elastomers (TPE's) are interesting materials for various applications, including the automotive industry, due to their excellent balance between processability and physical properties, especially using hydrogenated styrene-butadiene copolymer. In the present work, two structures of styreneethylene/buthylene-styrene (SEBS) triblock copolymer (linear and radial) were blended with polypropylene (PP) using a process aid oil. Three different SEBS-PP ratios were evaluated. Phase behavior was studied by means of differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and Scanning electron microscopy (SEM), which confirmed the formation of a single phase material. PP crystallinity was affected by SEBS structure causing a lamellar thinning of crystals. The SEM analysis shows that radial and linear structures of SEBS have different morphology.

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Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Thermal & morphological evaluation of linear and radial SEBS- polypropylene blends

et al. 2013

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“…Previously the thermal behaviour of PS/HDPE blends was investigated, and it was found that the compatibilizer decreased the crystallinity of HDPE [44,62,73] due to the dilution with ethylene-butadiene segments of SEBS. Abis et al [70] mentioned that binary PS/HDPE blends did not show any changes in their DSC parameters, addition of 10% compatibilizer resulted in a decrease of the crystallization and melting temperatures, which indicated the compatibilization effect. These statements may be supported by the fact that fracture path spread in the boundary of the phases up to 1 vol% of SEBS-g-MA (Fig.…”

Section: Morphologymentioning

confidence: 99%

“…Some research mentioned styrene-butadiene copolymer (SB) [53] and styrene/butadiene/styrene block copolymer (SBS) [52] as a potential additive for compatibilizing PS and PE with each other, in other papers the effectiveness of polyether copolymer (PEC) [54], hydrogenated butadiene-polystyrene copolymers (SEB) [55] and ethylene/styrene interpolymers [47] were also investigated. However, the most commonly used compatibilizer for improving the miscibility of PS and PE is styrene/ethylene/butylene/styrene block copolymer (SEBS) and its maleic anhydride grafted type (SEBS-g-MA), with which adhesion can be improved between the phases to prepare blends with better toughness [35,44,45,[56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73].…”

Section: Introductionmentioning

confidence: 99%

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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“…Though polymeric blends based on sPS and thermoplastic or elastomeric polymers have been reported in patent literature, [7][8][9][10][11] only a few research papers have been published. [12][13][14][15][16] Polymers produced by blending sPS and iPP are certainly an ideal combination to create new products with balanced properties providing that the advantage of one component can compensate the deficiencies of the other. Attempts have been made to make use of sPS to modify other polymers.…”

mentioning

confidence: 99%

Morphology, Tensile Strength and Thermal Behavior of Isotactic Polypropylene/Syndiotactic Polystyrene Blends Compatibilized by SEBS Copolymers

Chen

Tang

Li³

et al. 2004

Polym J

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ABSTRACT:The effects of three triblock copolymers of poly[styrene-b-(ethylene-co-butylene)-b-styrene] (SEBS) of different molecular weight (MW) on the morphology, tensile strength and thermal behavior of isotactic polypropylene/syndiotactic polystyrene (iPP/sPS, 80/20) blend are investigated. Morphology observation shows that both the medium MW and the lower MW SEBS are more effective than the higher MW SEBS in compatibilizing the blends. Tensile tests revels both the medium and low MW compatibilizer lead to a significant improvement in tensile strength, while the higher MW compatibilizer is efficient in increasing the elongation at break of the blends. The localization of compatibilizers in the blends is observed by mean of SEM and the correlation between the distribution of the compatibilizers and mechanical properties of the blends is evaluated. The mechanical properties of the iPP/sPS blends depend on not only the interfacial activity of the compatibilizers but also the distribution of the compatibilizer in the blend. Addition of the compatibilizers to the blend causes a remarkable decrease in the magnitude of the crystallization peak of sPS at its usual T c . Vicat softening points demonstrate that the heat resistance of iPP/sPS blend is much higher than that of the pure iPP.

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Syndiotactic polystyrene/high-density polyethylene blends compatibilized with SEBS copolymer: thermal, morphological, tensile, dynamic-mechanical, and ultrasonic characterization

Cited by 25 publications

References 18 publications

Thermal & morphological evaluation of linear and radial SEBS- polypropylene blends

Thermal & morphological evaluation of linear and radial SEBS- polypropylene blends

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

Morphology, Tensile Strength and Thermal Behavior of Isotactic Polypropylene/Syndiotactic Polystyrene Blends Compatibilized by SEBS Copolymers

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