Creep of thermoplastic polyurethane reinforced with ozone functionalized carbon nanotubes

Jia, Yu; Jiang, Zhipeng; Gong, Xinglong; Zhang, Z.

doi:10.3144/expresspolymlett.2012.80

Cited by 28 publications

(24 citation statements)

References 28 publications

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“…HereTiO 2 coated MWCNT has been prepared by sol-gel process and then both uncoated and TiO 2 coated MWCNT was dispersed in a matrix. Thermoplastic polyurethane (TPU) was taken as a polymer matrix for all RAMs due to its flexibility [30].…”

mentioning

confidence: 99%

Microwave absorption behaviour of MWCNT based nanocomposites in X-band region

Bhattacharya¹,

Sahoo²,

Das³

2013

Express Polym. Lett.

108

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Multiwall carbon nanotube (MWCNT) based nanocomposites were prepared by a two-step process. Firstly, titanium dioxide (TiO2) coated MWCNT was prepared via sol-gel technique. In the second step, the acid modified MWCNTs were dispersed in the thermoplastic polyurethane matrix by solution blending process. Characterizations of the nanocomposites were done by X-ray diffraction analysis, X-ray photoelectron spectroscopy, Scanning Electron Microscopy, Transmission Electron Microscopy and Energy-dispersive X-ray spectroscopy. Microwave absorption studies of the nanocomposites were carried out in X-band region. The microwave absorption result was discussed with the help of complex permittivity and permeability of the prepared radar absorbing material (RAM). The result showed superior microwave absorption property of the composite containing both TiO2 coated MWCNT and magnetite (Fe3O4). This result is due to the effective absorption of both electrical and magnetic components of the microwave. RAM-MW, RAM-Ti, RAM-Ti@MW and RAMTi@ MW/Fe and showed the maximum reflection loss of –16.03 dB at 10.99 GHz, –8.4 dB at 12.4 GHz, –36.44 dB at 12.05 GHz and –42.53 dB at 10.98 GHz respectively. Incorporation of MWCNT enhanced the thermal stability of the composite which has been confirmed by thermogravimetric analysis

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mentioning

confidence: 99%

Microwave absorption behaviour of MWCNT based nanocomposites in X-band region

Bhattacharya¹,

Sahoo²,

Das³

2013

Express Polym. Lett.

108

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“…Most significant enhancement is shown by the composite made with DMF displaying 28% and 43% improvement by comparison with neat TPU at 100 and 120 °C, respectively. Good interfacial interactions between CNS and TPU enable reinforcement since the stress applied can be efficiently transferred to the segregated filler network …”

Section: Resultsmentioning

confidence: 99%

“…Good interfacial interactions between CNS and TPU enable reinforcement since the stress applied can be efficiently transferred to the segregated filler network. [52]…”

Section: Mechanical Properties and Creep Recovery Behaviormentioning

confidence: 99%

Effect of Solvent on Segregated Network Morphology in Elastomer Composites for Tunable Piezoresistivity

Sang

Guo

et al. 2019

Macro Materials & Eng

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Flexible, light‐weight, and wearable electronics have significant potential for the development of Internet of Things. Flexible sensors with tunable piezoresistive properties are in high demand for various practical applications. Herein, different morphology thermoplastic polyurethane (TPU)/ carbon nanostructure (CNS) composites with segregated network are obtained by swelling the TPU powders using various solvents. The better solvent for TPU, dimethylformamide (DMF), renders the composites with 0.7 wt% CNS stronger polymer‐filler interactions, resulting in significantly improved piezoresistive sensitivity at strain larger than 150%. Also the gauge factors (GFs) for these composites are 9.7 in the range 0–60% strain and 19.3 for 60–100% strain. In contrast, the composites with ethanol (EtOH) and tetrahydrofuran (THF) which swell less the TPU show delayed increase in piezoresistivity and GFs of 2.2 and 3.5 for strain up to 100%, respectively, suggesting potential applications for stretchable conductors.

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“…Maximum peak temperature of loss modulus curve represents T g of soft segment which, due to interaction between CNTs and polymer matrix and restriction of chain mobility, increases on increasing the CNT content to 0.5 wt%. The nanocomposite with higher content of CNTs, due to presence of agglomerations, shows significant decrease in T g …”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of multiwall carbon nanotube/waterborne polyurethane nanocomposites

Hajializadeh

Barikani

Bellah

2017

Polymer International

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The preparation of thermoplastic nanocomposites of waterborne polyurethane (WBPU) and multiwall carbon nanotubes (MWCNTs) via an in situ polymerization approach is presented. The effects of the presence and content of MWCNTs on the morphology and thermal, mechanical and electrical properties of the nanocomposites were investigated. Carbon nanotubes were modified with amide groups in order to enhance their chemical affinity towards WBPU. Thermogravimetric studies show enhanced thermal stability of the nanocomposites. Scanning and transmission electronic microscopy images prove that functionalized carbon nanotubes can be effectively dispersed in WBPU matrix. Mechanical properties reveal that Young's modulus and tensile strength tend to increase when appropriate amounts of MWCNTs are loaded due to the reinforcing effect of the functionalized carbon nanotubes. Thermal properties show an increase in the glass transition temperature and storage modulus with an increase in MWCNT content. X‐ray diffraction reveals better crystallization of the WBPU in the presence of MWCNTs. The WBPU/MWCNT nanocomposite film containing 1 wt% of MWCNTs exhibits a conductivity nearly five orders of magnitude higher than that of WBPU film. © 2017 Society of Chemical Industry

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Creep of thermoplastic polyurethane reinforced with ozone functionalized carbon nanotubes

Cited by 28 publications

References 28 publications

Microwave absorption behaviour of MWCNT based nanocomposites in X-band region

Microwave absorption behaviour of MWCNT based nanocomposites in X-band region

Effect of Solvent on Segregated Network Morphology in Elastomer Composites for Tunable Piezoresistivity

Synthesis and characterization of multiwall carbon nanotube/waterborne polyurethane nanocomposites

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