Multi-stimuli responsive novel polyimide smart materials bearing triarylamine and naphthalimide groups

Zhang, Xu; Yang, Caiyu; Zhao, Shuo; Chen, Ye; Niu, Haijun; Zhao, Ping; Wang, Wen

doi:10.1016/j.eurpolymj.2019.01.019

Cited by 23 publications

(7 citation statements)

References 64 publications

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“…[1,2] Triarylamine (TPA) and its derivatives are primarily utilized as diamine monomers to improve the electrochromic properties of PIs. [3,4] Generally, TPA-containing PI films do not fulfill practical DOI: 10.1002/mame.202200039 requirements owing to their fragility and poor stability. Therefore, blending is essential for improving the deformation resistance, mechanical strength, and thermal stability of PIs.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Niu

Shi

Pei

et al. 2022

Macro Materials & Eng

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In this study, WO 3 nanorods are directly blended with polyamic acid (PAA) solutions to improve the electrochromic capacity of WO 3 /PAA composite films. Specifically, the hexagonal WO 3 nanorods are prepared as inorganic reinforcements using a hydrothermal method and modified by 𝜸-aminopropyl triethoxysilane. After curing at 300 °C, the WO 3 nanorods/polyimide (PI) composite films demonstrate excellent mechanical and thermal properties. The tensile strength of the 1 wt% WO 3 /PI composite film is ≈110.27 MPa. The thermal stability of the 5 wt% WO 3 /PI composite film is better than that of the others, and the T 5 (5% thermal weight loss temperature) value is ≈560.05 °C. Moreover, the WO 3 /PAA composite films demonstrate electrochromic behaviors. The electrochromic range of the 5 wt% WO 3 /PAA composite film exceeds to 68%. For the WO 3 /PAA samples, the oxidation peak of the WO 3 nanorods is evident in the cyclic voltammetry curves. The color contrast of WO 3 /PI nanocomposites can be enhanced owing to the significant synergistic effects of the electron donor-acceptor system.

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Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Niu

Shi

Pei

et al. 2022

Macro Materials & Eng

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“…[ 7,11–15 ] Among these SMPs, shape memory polyimides (SMPIs) with adjustable glass transition temperatures ( T g ) have attracted extensive attention and investigation because of their excellent mechanical properties, thermal and chemical stabilities, and shape memory performances. [ 6,7,16–19 ]…”

Section: Introductionmentioning

confidence: 99%

“…[7,[11][12][13][14][15] Among these SMPs, shape memory polyimides (SMPIs) with adjustable glass transition temperatures (T g ) have attracted extensive attention and investigation because of their excellent mechanical properties, thermal and chemical stabilities, and shape memory performances. [6,7,[16][17][18][19] However, like common polyimides, SMPIs are electrically insulated, which limits their applications. Adding functional phases to form composites can effectively expand the functionality of materials, like electrical conductivity, [20][21][22][23][24] thermal conductivity, [25][26][27][28] and electromagnetic wave absorption.…”

Section: Introductionmentioning

confidence: 99%

Interpenetrating shape memory polyimide‐polyaniline composites with electrical conductivity

Gao

2023

Polymer Composites

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Shape memory polyimides (SMPI) with adjustable shape recovery temperatures have been paid much attention in both fundamental research and practical applications. However, the intrinsically electrical insulation of SMPIs limits their applications. In this article, the electrically conductive shape memory polyimide‐polyaniline (SMPI‐PANI) composite with interpenetrating networks was synthesized by in situ polycondensation. Compared with pure SMPI, the electrical resistivity of SMPI‐PANI composites reduced by about 12 orders of magnitude when the PANI content was 15 wt%. The addition of PANI had less influence on the glass transition temperature and storage modulus in glassy state. But the storage modulus of SMPI‐PANI composites in rubbery state was over 40 times higher than that of pure SMPI, indicating that SMPI‐PANI composites have higher stiffness during shape recovery. The SMPI‐PANI composites demonstrate excellent shape memory performance with shape fixation ratio higher than 97% and shape recovery ratio higher than 93%. The SMPI‐PANI composites also have good thermal stability with the effective decomposition temperatures higher than 150°C. The SMPI‐PANI composite in our work is a potential material for deployable aerospace structure.

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“…These stimuli are associated to variations in environmental conditions (e.g. temperature, pressure, or light) or specific stimuli such as pH variations, enzymatic action, magnetic, electrical or mechanical solicitations 2,3 . Due to their versatility, they can be applied in a large variety of areas including tissue engineering 4 , photocatalytic applications 5 or energy storage 6 .…”

Section: Introductionmentioning

confidence: 99%

Environmentally friendly carrageenan-based ionic-liquid driven soft actuators

et al. 2022

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Multi-stimuli responsive novel polyimide smart materials bearing triarylamine and naphthalimide groups

Cited by 23 publications

References 64 publications

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Interpenetrating shape memory polyimide‐polyaniline composites with electrical conductivity

Environmentally friendly carrageenan-based ionic-liquid driven soft actuators

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Multi-stimuli responsive novel polyimide smart materials bearing triarylamine and naphthalimide groups

Cited by 23 publications

References 64 publications

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO3 Nanorods

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO3 Nanorods

Interpenetrating shape memory polyimide‐polyaniline composites with electrical conductivity

Environmentally friendly carrageenan-based ionic-liquid driven soft actuators

Contact Info

Product

Resources

About

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods