Construction of sacrificial network in styrene-ethylene/butadiene-styrene triblock copolymer composites and their mechanical behaviors

Liao, Tingting; Wu, Jianyu; Tang, Zilun; Su, Qiuping; Huang, Zhiyi; Gu, Yuxin; Li, Yong; Xie, Jing Pei; Lin, Xiaofeng; Yi, Guobin

doi:10.1080/10601325.2021.1967170

Cited by 3 publications

(8 citation statements)

References 56 publications

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“…[ 16 ] Besides the characteristic peak belonging to CNC groups appeared at 1539 cm −1 in PMA chain. [ 32 ] The absorption peak at 1597 cm −1 in ATA was due to the stretching vibration of NCH group in the triazole ring (Figure S1). [ 33 ] The characteristic peak of NCH groups on PMA shifts to 1591 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

“…The O1s spectrum is deconvoluted into three synthetic peaks: OC (531.9 eV), COC (533.3 eV), and COH (532.4 eV). [ 32,39,40 ] In Figure 2D, the high‐resolution O1s spectrum of the PMAFe also can be deconvoluted into three synthetic peaks, which are attributed to the OC (531.0 eV), COC (533.3 eV), and COH (532.4 eV). Additionally, the coordination between carbonyl and iron atoms in PMAFe leads to the decrease of electronegativity, and the binding energy position of OC functional group moves to the lower position.…”

Section: Resultsmentioning

confidence: 99%

“…The introduction of hydrogen bonding and Fe‐based coordination bonding dynamic network caused the increase of crosslinking density, which limited the chain movement. [ 32,58 ]…”

Section: Resultsmentioning

confidence: 99%

“…The fracture energy (W) is defined as the integral area of the stress–strain curves. [ 32 ] The stress‐relaxation testing was also performed on the SUST. The samples were stretched to 100% strain and the change in stress over 3600 s was recorded.…”

Section: Methodsmentioning

confidence: 99%

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Modified ethylene/α‐octene co‐polymer elastomer composites with sacrificial bonds crosslinking networks and their reinforced mechanical performance

Liu

Lin

Huang

et al. 2023

Polymer Engineering & Sci

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The low tensile strength of ethylene/α-octene co-polymer (POE) limits its application as high-strength materials. In this study, 3-amino-1,2,4-triazole (ATA) was grafted onto maleic anhydride functionalized POE (PM) by melt reaction to obtain side chains capable of forming hydrogen bonding and metal coordination bonding, and then ferric chloride hexahydrate and POE are blended with them to obtain composite materials with high strength and fracture energy. The introduction of iron-based coordination bonding and hydrogen bonding double dynamic crosslinking network endow thermoplastic elastomers with excellent mechanical strength and high toughness. Fourier transform infrared spectroscopy, rheological tests, and X-ray photoelectron spectroscopy reveal the existence of non-covalent crosslinking networks. Based on the strengthening and toughening of non-covalent dynamic crosslinking network, the tensile strength of the modified POE elastomer composites achieves 12.5 MPa along with the elongation at break of 3540%. In addition, the modified POE elastomer composites exhibit improved melt elasticity and thermal stability.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The introduction of hydrogen bonding and Fe‐based coordination bonding dynamic network caused the increase of crosslinking density, which limited the chain movement. [ 32,58 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Modified ethylene/α‐octene co‐polymer elastomer composites with sacrificial bonds crosslinking networks and their reinforced mechanical performance

Liu

Lin

Huang

et al. 2023

Polymer Engineering & Sci

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“…Employment of sacrificial bonds as physical crosslinks has been demonstrated to be a particularly effective strategy for enhancing the mechanical properties of materials 13–19 . Compared with covalent bonds, noncovalent sacrificial bonds are easier to dissociate when the materials are subjected to external forces and undergo reformation, providing an available energy dissipation mechanism for enhancing material properties 19 .…”

Section: Introductionmentioning

confidence: 99%

Modified ethylene/α‐octene co‐polymer composites based on dual toughening of hydrogen bonding network and nanospheres

Huang

Liao

Liu

et al. 2022

Polymers for Advanced Techs

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Thermoplastic elastomer ethylene/α-octene co-polymer (POE) is a special polymer material with both elasticity and thermoplasticity. However, the nonpolarity and lowtensile strength of POE limit its application in polar materials and high-strength materials fields. In this study, we synthesized a specific molecule with C═C bonds and N H bonds, which was introduced into POE to construct hydrogen bonding network, and the prepared modified POE is further blended with carboxyl terminated polystyrene nanospheres as toughening agent to prepare modified POE elastomer composites. Based on such dual toughening strategy containing chemical modification and physical toughening, the modified POE elastomer composites possess improved mechanical properties. The composites achieve a tensile strength of 21.4 MPa, elongation at break of 1268%, fracture energy of 109.6 MJÁm À3 and exhibit improved thermal stability. Impressively, the tensile strength of reprocessed composites is restored to more than 90% of their original tensile strength even after four times of reprocessing steps, demonstrating excellent reusability.

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Preparation of crosslinked starches with enhanced and tunable gel properties by the cooperative crosslinking-extrusion combined modification

Wei,

Wu,

Ren

et al. 2024

Carbohydrate Polymers

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Construction of sacrificial network in styrene-ethylene/butadiene-styrene triblock copolymer composites and their mechanical behaviors

Cited by 3 publications

References 56 publications

Modified ethylene/α‐octene co‐polymer elastomer composites with sacrificial bonds crosslinking networks and their reinforced mechanical performance

Modified ethylene/α‐octene co‐polymer elastomer composites with sacrificial bonds crosslinking networks and their reinforced mechanical performance

Modified ethylene/α‐octene co‐polymer composites based on dual toughening of hydrogen bonding network and nanospheres

Preparation of crosslinked starches with enhanced and tunable gel properties by the cooperative crosslinking-extrusion combined modification

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