Influence of processing conditions on the mechanical properties of SEBS/PP/oil blends

Tomacheski, Daiane; Pittol, Michele; Ermel, Carlos E.; Simões, Douglas Naue; Ribeiro, Vanda Ferreira; Santana, Ruth Marlene Campomanes

doi:10.1007/s00289-017-1994-2

Cited by 18 publications

(16 citation statements)

References 21 publications

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“…An exothermic crystallization peak from the PP phase was observed in the compounds near to 107°C. The temperature of crystallization of PP in the compounds was also lower than that observed in PP pure (see Table 2) which can be explained by the diluent character of the other components in the system, which delay the crystallization process of PP as reported in a previous study 25 .…”

Section: Thermal Propertiessupporting

confidence: 54%

Use of Copper Microparticles in SEBS/PP Compounds. Part 1: Effects on Morphology, Thermal, Physical, Mechanical and Antibacterial Properties

et al. 2019

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An alternative for producing thermoplastic elastomers (TPEs) with antibacterial properties is to add copper to the polymeric matrices. This study investigates the effects of the addition of copper microparticles on the morphological, thermal, physical and mechanical behavior and antibacterial properties of a blend composed by styrene-(ethylene-butylene)-styrene triblock copolymer (SEBS) and polypropylene (PP) homopolymer. The cooper microparticles used (commercial grade, produced by electrolytical process) were dispersed in a TPE matrix composed by SEBS/PP. Two bacterial species associated with infections (Escherichia coli and Staphylococcus aureus) were used in the antibacterial assays. The incorporation of copper microparticles in TPE matrix did not promote expressive changes in the thermal, physical and mechanical properties of the compounds. The findings from antibacterial assays showed a reduction of 99.99% in bacterial counts.

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Section: Thermal Propertiessupporting

confidence: 54%

Use of Copper Microparticles in SEBS/PP Compounds. Part 1: Effects on Morphology, Thermal, Physical, Mechanical and Antibacterial Properties

et al. 2019

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“…e addition of SEBS to PP/PC reduced the stress concentration of the blends and increased the overall yield strength of the matrix. Tiggemann et al and Tomacheski et al studied the influence of clay on the properties of SEBS/PP/oil thermoplastic elastomer [9,10]. It was found that the addition of clay enhanced the tensile strength of the material.…”

Section: Introductionmentioning

confidence: 99%

Design and Research of Skin Injection Molded TPE Materials Based on Genetic Algorithm

Yan

Chen

Wang

et al. 2020

Advances in Polymer Technology

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Thermoplastic elastomer (TPE) is a kind of new automotive interior material with high elasticity and strength. Traditional TPE materials were difficult to meet the new requirements of large-scale automotive interior parts with complex shape. In this study, the TPE material was prepared using different mass ratios with homopolymer polypropylene (PP), styrene-ethylene/butene-styrene copolymer (SEBS), naphthene oil (NO), magnesium stearate (MGST), and polytetrafluoroethylene (PTFE). A quality-prediction and multiobjective optimization method based on a genetic algorithm was applied. The parameters that had an important effect on the forming quality were selected using an orthogonal testing method. Results showed that using the proposed method, a new TPE material is obtained with excellent scratch resistance ability and high MFI. The mechanisms of the addition of PTFE and MGST were analysed according to SEM images. The peel strength of the optimized part was measured to prove the coating quality of TPE material.

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“…There has been a mature system for modification of SEBS, in which polypropylene (PP) is the most used modify resin for SEBS, as the stable cocontinuous interpenetrating polymer network (IPN) structure could be found in SEBS/PP blends with PP weight content range from 10% to 55%, this can be ascribed to the good miscibility of PP with EB phase while immiscibility with PS phase . Typically, the addition of PP improves the modulus and tensile strength, while decreases the tensile strain of SEBS.…”

Section: Introductionmentioning

confidence: 99%

Influence of extender oil composition on flowing property, thermal stability, and morphology of styrene‐b‐ethylene‐co‐butylene‐b‐styrene copolymer/polypropylene/oil blends

Zhen

Xie

et al. 2019

Polymers for Advanced Techs

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In this study, a series of styrene-b-ethylene-co-butylene-b-styrene copolymer (SEBS)/polypropylene (PP)/oil blends with different kinds of oil composition was developed through melt blending. The effect of oil with different composition and properties on its phase equilibrium and "redistribution" in multiphasic SEBS elastomer was systematically studied for the first time. Moreover, an integral influencing mechanism of oil composition on the structure and properties of SEBS/PP/oil blends was also put forward. The mineral oil was mainly distributed in ethylene/butylene (EB)/PP phase, which greatly enhanced the processing flowability of SEBS/PP/oil blends. With increasing oil C N content, a redistribution of oil appeared and excess naphthenic oil (NO) entered the interphase of soft and hard phases. The dynamic mechanical thermal analysis (DMTA) analysis indicated that the polystyrene (PS) phase was plasticized, which also helped to improve the processing fluidity of blends. However, the plasticizing of physical cross-linking point PS resulted in a decrease in mechanical strength and thermal stability. Small-angle X-ray scattering (SAXS) and transmission electron microscope (TEM) results showed that PS phase (45 nm to 55 nm) cylindrically distributed in EB/PP/oil matrix, the excess NO in the interphase enlarged the distance between PS phase and widen the escape channel for oil migration. At over 45% oil C N content, the electron density difference between soft and hard phases reduced to the minimum, same as T gPS , indicating a deeper plasticizing effect. The PS phase swelled and exhibited elastic behavior; thus, the force could be uniformly transferred between two phases. Importantly, a recover in strength and thermal stability was observed in O-5 blend.This work significantly filled the gap of studies in oil-extended thermoplastic elastomers (TPEs), exhibiting great theoretical guiding significance and application value.

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Influence of processing conditions on the mechanical properties of SEBS/PP/oil blends

Cited by 18 publications

References 21 publications

Use of Copper Microparticles in SEBS/PP Compounds. Part 1: Effects on Morphology, Thermal, Physical, Mechanical and Antibacterial Properties

Use of Copper Microparticles in SEBS/PP Compounds. Part 1: Effects on Morphology, Thermal, Physical, Mechanical and Antibacterial Properties

Design and Research of Skin Injection Molded TPE Materials Based on Genetic Algorithm

Influence of extender oil composition on flowing property, thermal stability, and morphology of styrene‐b‐ethylene‐co‐butylene‐b‐styrene copolymer/polypropylene/oil blends

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