Relationship between structure and properties in high‐performance <scp>PA</scp>6/<scp>SEBS</scp>‐<i>g</i>‐<scp>MA</scp>/(<scp>PPO</scp>/<scp>PS</scp>) blends: The role of <scp>PPO</scp> and <scp>PS</scp>

Wu, Yijian; Zhang, Hui; Shentu, Baoqing; Wang, Zhixue

doi:10.1002/app.45281

Cited by 12 publications

(11 citation statements)

References 35 publications

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“…Similar results have also been reported in other research. 28,29 On the other hand, too strong interfacial adhesion may prevent the interfacial debonding process which plays an important role in many toughening systems. 30 For instance, Sue et al reported that for polycarbonate/polyethylene (PC/PE) blends, debonding at the interface was the major toughening mechanism, which released triaxial stress around microvoids and caused matrix shear yielding.…”

Section: ■ Introductionmentioning

confidence: 99%

Toughening of PBT by POE/POE-g-GMA Elastomer through Regulating Interfacial Adhesion and Toughening Mechanism

Shang

Wu²,

Shentu

et al. 2019

Ind. Eng. Chem. Res.

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Supertough poly(butylene terephthalate) (PBT) blends were prepared by melting with poly(ethyleneoctene) (POE) and glycidyl methacrylate grafted POE (POEg-GMA), and the toughening mechanism was systematically analyzed. Scanning electron microscopy (SEM) and rheological measurements identified that POE-g-GMA effectively improved the interaction between PBT and elastomer. The compatibility between phases improved gradually, while the notched impact strength increased at first and then decreased with the increase of POE-g-GMA content. The blends containing 10 wt % POE-g-GMA showed the highest impact strength, which was 18.0-fold compared to that of neat PBT. The study of the toughening mechanism indicated that a suitable compatibility was significant for obtaining supertough PBT blends because the good elastomers dispersion and suitable interfacial adhesion can be obtained simultaneously. The weak interface and the large particle size led to unstable crack propagation, while too strong interfacial adhesion prevented interface debonding and arrested matrix shear yielding. Microvoiding generated by both the debonding and internal cavitation of elastomers followed by matrix shear yielding was the main toughening mechanism in toughened PBT blends.

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Section: ■ Introductionmentioning

confidence: 99%

Toughening of PBT by POE/POE-g-GMA Elastomer through Regulating Interfacial Adhesion and Toughening Mechanism

Shang

Wu²,

Shentu

et al. 2019

Ind. Eng. Chem. Res.

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“…[19,20] Therefore, the entanglement density of the PPO/PS matrix could be controlled by adjusting the content of PPO in the matrix, thus improving the toughening ability of the matrix. [21][22][23][24] It was found that rubber polymers containing styrene (St) units, such as high-impact polystyrene (HIPS), could improve the impact properties of the PPO/PS alloy. [25,26] Although HIPS could ensure the good processability of PPO and improve the impact toughness to a certain extent, its toughening efficiency was relatively low.…”

Section: Introductionmentioning

confidence: 99%

Effect of Entanglement Density on Mechanical Properties and the Deformation Mechanism of Rubber‐Modified PPO/PS Blends

Song

Ren

et al. 2022

Macro Materials & Eng

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This paper presents the synthesis of core-shell polybutadiene-graftpolystyrene (PB-g-PS) with a core-shell ratio of 70/30 in the copolymer. The polyphenylene oxide (PPO)/polystyrene (PS) alloy is toughened by high-impact polystyrene (HIPS) and the PB-g-PS copolymer. The effect of entanglement density on the mechanical properties and the deformation mechanism of the blends is investigated. The entanglement density of the blends is found to increase with increasing PPO content. The mechanical properties of the blends indicated that HIPS and PB-g-PS have excellent synergic toughening effects on the PPO/PS alloy, and the impact strength and elongation at break gradually increased with increasing matrix chain entanglement density. When the chain entanglement density of the matrix is low, the deformation mechanism of the blends is multiple crazing. As the chain entanglement density of the matrix increased, there are two deformation mechanisms in the blends at the same time: crazing and shear yield. However, the crazing disappeared when the chain entanglement density of the matrix reached a certain value, and only shear yield existed. Therefore, with the increase of matrix entanglement density in the blends, the deformation mechanism of the blends gradually transitioned from crazing to shear yield and cavitation, enhancing the toughness of the blends.

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“…It has been well‐established that there is a close relationship between the phase morphology and final properties of polymer blends. Accordingly, control of the factors affecting the morphology is an essential factor to achieve the desired properties …”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, control of the factors affecting the morphology is an essential factor to achieve the desired properties. [6,7] Incorporation of nanoparticles into the polymer blends has been the subject of a great number of researches in academia and industry. This approach is associated with interesting results such as improving the mechanical properties, adding new characteristics, such as electrical properties, or controlling of the phase morphology.…”

Section: Introductionmentioning

confidence: 99%

Investigating the mechanical, morphological, and thermal behavior of PA‐6/SAN/MWCNT blends: Application of Taguchi experimental design

et al. 2019

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This work presents the study of morphology, melting and crystallization characteristics, and mechanical properties of the PA‐6/SAN blends reinforced with multiwalled carbon nanotubes (MWCNTs). The Taguchi method was employed to design the experiments based on the three varying parameters (ie, blend composition, nanofiller content, and sequence of blending) to obtain the optimized mechanical properties of the nanocomposites. In addition, localization of nanotubes was studied in terms of thermodynamic and kinetic prospects. It was observed that, due to the preferential tendency for localization of the carbon nanotubes toward the PA‐6 matrix, mixing protocol had an important role in determining the performance of the nanocomposites. Incorporation of an optimum weight percent of the MWCNT provided a good dispersion of the nanotubes and also an appropriate morphology for the blend. According to the analysis based on the Taguchi method, the optimum mixing protocol, blend composition, and MWCNT loading were M2, 80/20, and 0.5 wt%, respectively.

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Relationship between structure and properties in high‐performance PA6/SEBS‐g‐MA/(PPO/PS) blends: The role of PPO and PS

Cited by 12 publications

References 35 publications

Toughening of PBT by POE/POE-g-GMA Elastomer through Regulating Interfacial Adhesion and Toughening Mechanism

Toughening of PBT by POE/POE-g-GMA Elastomer through Regulating Interfacial Adhesion and Toughening Mechanism

Effect of Entanglement Density on Mechanical Properties and the Deformation Mechanism of Rubber‐Modified PPO/PS Blends

Investigating the mechanical, morphological, and thermal behavior of PA‐6/SAN/MWCNT blends: Application of Taguchi experimental design

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