Synthesis and Characterization of the Isolated Straight Polymer Chain Inside of Single-Walled Carbon Nanotubes

Liu, Zunfeng; Zhang, Xiaoyan; Yang, Xiaoying; Ma, Yue; Huang, Yi; Wang, Bin; Chen, Yongsheng; Sheng, Jing

doi:10.1166/jnn.2010.2446

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…Crystallization inside CNTs has previously been observed using High-Resolution Transmission Electron Microscopy for molecules that cluster together through strong intermolecular interactions; such as inorganic crystals [45][46][47] and small organic molecules with highly conjugated moieties 48,49 . Although the encapsulation of PS inside CNTs has also been visualized by High-Resolution Transmission Electron Microscopy 50 , the crystalline PS arrangement has not been reported yet. We hypothesize that this is due to a current limitation of the experimental method, as electron beams transfer kinetic energy to the flexible polymers 51 , displacing any polymer ordering from equilibrium positions into a melted chain.…”

Section: Crystal Formationmentioning

confidence: 99%

Mechanical characterization and induced crystallization in nanocomposites of thermoplastics and carbon nanotubes

et al. 2020

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Nanocomposites built from polymers and carbon nanotubes (CNTs) are a promising class of materials. Computer modeling can provide nanoscale views of the polymer–CNT interface, which are much needed to foster the manufacturing and development of such materials. However, setting up periodic nanocomposite models is a challenging task. Here we propose a computational workflow based on Molecular Dynamics simulations. We demonstrate its capabilities and showcase its applications, focusing on two existing nanocomposite materials: polystyrene (PS) with CNT and polyether ether ketone with CNT. The models provide insights into the polymer crystallization inside CNTs. Furthermore, the PS+CNT nanocomposite models are mechanically tested and able to predict an enhancement in Young’s modulus due to the addition of highly dispersed CNTs. We accompany those results with experimental tests and provide a prediction model based on Dynamic Quantized Fracture Mechanics theory. Our study proposes representative simulations of polymer–CNT nanocomposites as promising tools to guide the rational design of this class of materials.

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Section: Crystal Formationmentioning

confidence: 99%

Mechanical characterization and induced crystallization in nanocomposites of thermoplastics and carbon nanotubes

et al. 2020

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“…[2][3] Carbon nanofibers (CNFs) and carbon nanotubes (CNTs) have been extensively studied and applied as fillers for improving various properties of polymers due to their excellent mechanical, electrical and thermal properties. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] CNFs are currently being produced in volume and are significantly less expensive fillers when compared to CNTs. [23][24] Hammel et al found that CNFs are more * Author to whom correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, Thermal and Morphological Characterization of Polycarbonate/Oxidized Carbon Nanofiber Composites Produced with a Lean 2-Step Manufacturing Process

Lively¹,

Kumar²,

Tian³

et al. 2011

J. Nanosci. Nanotech.

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In this study we report the advantages of a 2-step method that incorporates an additional process pre-conditioning step for rapid and precise blending of the constituents prior to the commonly used melt compounding method for preparing polycarbonate/oxidized carbon nanofiber composites. This additional step (equivalent to a manufacturing cell) involves the formation of a highly concentrated solid nano-nectar of polycarbonate/carbon nanofiber composite using a solution mixing process followed by melt mixing with pure polycarbonate. This combined method yields excellent dispersion and improved mechanical and thermal properties as compared to the 1-step melt mixing method. The test results indicated that inclusion of carbon nanofibers into composites via the 2-step method resulted in dramatically reduced ( 48% lower) coefficient of thermal expansion compared to that of pure polycarbonate and 30% lower than that from the 1-step processing, at the same loading of 1.0 wt%. Improvements were also found in dynamic mechanical analysis and flexural mechanical properties. The 2-step approach is more precise and leads to better dispersion, higher quality, consistency, and improved performance in critical application areas. It is also consistent with Lean Manufacturing principles in which manufacturing cells are linked together using less of the key resources and creates a smoother production flow. Therefore, this 2-step process can be more attractive for industry.

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Supramolecular Chemistry of Carbon Nanotubes

Jousselme

Filoramo

Campidelli

2012

Supramolecular Chemistry of Fullerenes and Carbon Nanotubes

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Synthesis and Characterization of the Isolated Straight Polymer Chain Inside of Single-Walled Carbon Nanotubes

Cited by 5 publications

References 28 publications

Mechanical characterization and induced crystallization in nanocomposites of thermoplastics and carbon nanotubes

Mechanical characterization and induced crystallization in nanocomposites of thermoplastics and carbon nanotubes

Mechanical, Thermal and Morphological Characterization of Polycarbonate/Oxidized Carbon Nanofiber Composites Produced with a Lean 2-Step Manufacturing Process

Supramolecular Chemistry of Carbon Nanotubes

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