Dynamic ionic behavior of gel-free diolefin rubber-based carboxylate ionomers prepared<i>via</i>olefin metathesis

Wang, Xiaotong; Liu, Kai; Liu, Yudong; Xie, Tinghao; Hua, Jing

doi:10.1039/d2sm00098a

Cited by 7 publications

(2 citation statements)

References 36 publications

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“…Damping properties of HVBR/COOH‐x% with different grafting ratios: (a) Tan δ ‐T curves (b) Comparison of Tan δ max and effective damping temperature width with reported investigations: Unmodified HVBR, EHVBR/AO‐60, EHVBR/AO‐80, 31 Mechanical blend, 32 Na/ionomer, 33 in situ blend, 32 PB‐0.5% TAA, 34 fhp‐EBR/DA, 35 Fe‐85%, 36 In‐situ‐NC/ZDMA35, 37 HVBR/10 phrNaOH, 38 HVBR, 32 HVBR‐g‐COONa 39 . [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Resultsmentioning

confidence: 68%

“…In a hydrogen bond network, the energy dissipation efficiency of internal friction, interfacial sliding and 31 Mechanical blend, 32 Na/ionomer, 33 in situ blend, 32 PB-0.5% TAA, 34 fhp-EBR/DA, 35 Fe-85%, 36 In-situ-NC/ZDMA35, 37 HVBR/10 phrNaOH, 38 HVBR, 32 HVBR-g-COONa. 39 [Color figure can be viewed at wileyonlinelibrary.com] dislocation motion for rubber molecular chains is greatly improved under dynamic deformation, which is the main reason for improving the damping performance. As a damping material, the higher peak value of Tan δ, the better damping performance of the polymer.…”

Section: Damping and Surface Propertiesmentioning

confidence: 99%

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High‐damping ultralow−gel nonpolar elastomeric polymer through thiol−ene photo−click chemistry reaction

Zhang

Gao

Liu

et al. 2023

J of Applied Polymer Sci

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With the increasing demand for high-performance damping rubber material in various fields, improving the damping performance of existing nonpolar rubber has garnered tremendous scientific and industrial interest. However, it remains a long-standing challenge to improve the damping properties of nonpolar rubber materials due to their low intrinsic glass transition temperature (T g ) and incompatible surface energy with high-damping polar polymers or fillers. To solve this conundrum, ultra-low gel multifunctional carboxyfunctional high vinyl polybutadiene HVBR (HVBR/COOH-x%) was prepared by grafting 3-mercaptopropionic acid (3PMA) onto HVBR via thiolÀene photo-Àclick. The effects of reaction parameters including molecular weight, 1,2-vinyl content, photoinitiators, reaction time, thiol and photoinitiator dosage on gel content and carboxyl grafting ratio were investigated. The HVBR/COOH-x% demonstrate a controllable grafting ratio range from 2% to 73%. Furthermore, the increased T g and intermolecular force resulted in excellent performance, including high-glass transition temperature of 26.3 C, tensile strength of 15.52 MPa, and elongation at break of 396.16%. Particularly with a wide range of effective damping temperatures above 46.6 C. Meanwhile, COOH endowed the HVBR with better self-viscosity, but also equipped it with stronger mutual viscosity. Therefore, this experiment proposes a feasible path to high damping and high adhesion in nonpolar rubber materials.

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