Characterization of hard-segment crystalline phase of poly(ether- block -amide) (PEBAX ® ) thermoplastic elastomers in the presence of supercritical CO 2  and its impact on foams

Barzegari, Mohamad Reza; Hossieny, Nemat; Jahani, Davoud; Park, Chul

doi:10.1016/j.polymer.2017.02.088

Cited by 66 publications

(61 citation statements)

References 67 publications

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“…Aer unloading, conductivity nearly recover initial level, causing a reversible phenomenon, which is due to the elastomer properties of PEBAX. 32 During the cyclic loading as shown in Fig. 7a and b, the composite lms present different trends during the loading process, and good recoverability aer stabilization by cyclic loading were obtained.…”

Section: Resultsmentioning

confidence: 89%

Flexible PEBAX/graphene electromagnetic shielding composite films with a negative pressure effect of resistance for pressure sensors applications

et al. 2020

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Section: Resultsmentioning

confidence: 89%

Flexible PEBAX/graphene electromagnetic shielding composite films with a negative pressure effect of resistance for pressure sensors applications

et al. 2020

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“…After the saturating process, the increased T m and DH m are expected and can be clearly observed in Table 2. This result indicates that CO 2 can facilitate the chains to move, improving the perfection of hard segment domain [43,44]. But, the extent of variation of the thermal behavior after the saturating process for TPUs is very different.…”

Section: Thermal Properties Of Tpumentioning

confidence: 99%

Preparation of microcellular thermoplastic polyurethane (TPU) foam and its tensile property

Wang

Zheng

et al. 2017

Polymer Engineering & Sci

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In this study, the thermoplastic polyurethane (TPU) composed of same type soft and hard segment while different hard segment contents was selected to prepare microcellular TPU foams, using CO2 as the physical blowing agent in a batch foaming process. The TPU with high hard segment content (i.e., 36.1 wt%) exhibited high complex viscosity, low initial CO2 content, and microcrystalline region, while the others (i.e., 32.0 and 26.1 wt%) showed opposite results. The cell structure evolution of TPU foams with the foaming temperature and the foaming time showed that the low hard segment content was benefiting for the expansion ratio, whereas the high hard segment content generated the microcrystalline region acting as the nucleating site to improve the cell density. The tensile behavior of prepared TPU foams was investigated in the cyclic tensile test. It was observed that the hysteresis and residual strain increased with the increasing hard segment content, furtherly exhibited lower value compared to TPU. Moreover, scanning electron microscopy, differential scanning calorimeter, and infrared spectra were used to reveal the microstructure after tensile test. The results indicated that the cell structures had a significant contribution to improve the elasticity, resulting from the protection of cells on the hard domains. POLYM. ENG. SCI., 58:E158–E166, 2018. © 2017 Society of Plastics Engineers

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“…Recently, it is announced by Arkema Company that this type polymer can be made from renewable materials including castor oil, which could reduce fossil-based material consumption by 29% and CO 2 equivalent emissions by 32%. 24 As a result, PEBA is an ideal blending constituent for PLA to prepare new environmentally benign material for uses in both biomedical and commodity applications. Meanwhile, PEBA has a high impact resistance even at temperature as low as −40 C since the polyetherrich phase has a much lower glass transition temperature, and thus PEBA can be used as an impact modifier for the brittle thermoplastic polymer.…”

Section: Articlementioning

confidence: 99%

Toughening Poly(lactic acid) by Melt Blending with Poly(ether-block-amide) Copolymer

Cai¹,

Jiang²,

Zhou³

et al. 2017

sci adv mater

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Melt blending with poly(ether-b-amide) copolymer (PEBA) was found to significantly enhance the toughness of poly(lactic acid) (PLA). The miscibility, morphology, thermal behavior, mechanical properties and rheological behavior of the blends were investigated. DMA and DSC analysis revealed that the PLA/PEBA blends were immiscible. A clear, phase-separated morphology was observed from SEM results. The addition of PEBA enhanced the cold crystallization of the PLA in the blends and accelerated the crystallization rate due to the interfacial function between PLA and PEBA phases. Significant enhancement of the toughness of PLA was achieved by the incorporation of PEBA copolymer. The optimum impact modification of the PLA was obtained by blending with 20 wt% PEBA, with an elongation at break of 300% as compared to 5% for pure PLA. The impact strength was ten times higher than that of the pure PLA. SEM results showed that the interfacial cavitation followed by a massive shear yielding of the matrix contributed to the increased toughening effect in the blends. The rheological measurement revealed an interaction between PLA and PEBA in the melt state.

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Characterization of hard-segment crystalline phase of poly(ether- block -amide) (PEBAX ® ) thermoplastic elastomers in the presence of supercritical CO 2 and its impact on foams

Cited by 66 publications

References 67 publications

Flexible PEBAX/graphene electromagnetic shielding composite films with a negative pressure effect of resistance for pressure sensors applications

Flexible PEBAX/graphene electromagnetic shielding composite films with a negative pressure effect of resistance for pressure sensors applications

Preparation of microcellular thermoplastic polyurethane (TPU) foam and its tensile property

Toughening Poly(lactic acid) by Melt Blending with Poly(ether-block-amide) Copolymer

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