Carbon Nanotubes can Enhance Phase Dispersion in Polymer Blends

Li, Zhong‐Ming; Li, Sha-Ni; Xu, Xiaotong; Lu, A.

doi:10.1080/03602550601152929

Cited by 26 publications

(5 citation statements)

References 24 publications

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“…At the same time, the glass transition temperatures (T g ) of PA6 and PPO are enhanced. 11 The addition of CNTs in the PVDF/ PA blends significantly increases the melt viscosity of PA6 phase, and a phase transformation from seaisland to cocontinuous occurs upon adding more than 1.2 wt % CNTs into the blends. A similar tendency was found in the storage modulus (G 0 ) and complex viscosity (g*) of the composites.…”

mentioning

confidence: 99%

Influence of carbon nanotubes with different functional groups on the morphology and properties of PPO/PA6 blends

Shen

Guo

Cheng

et al. 2009

J of Applied Polymer Sci

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Carbon nanotubes with different functional groups were prepared and then incorporated into the poly(2,6-dimethyl-1,4-phenylene oxide)/polyamide 6 (PPO/PA6) blend via melt blending. The influence of different carbon nanotubes on the morphology and properties of the blend was studied. The results show that addition of pristine CNTs, CNTs-OH, CNTs-NH 2 leads to the evolution of the phase structure of PPO/PA6 (mass ratio: 60/40) blend from sea-island to cocontinuous, whereas incorporation of CNTs-COOH does not change the blend morphology due to serious aggregation of the carbon nanotubes. Incorporating different CNTs into PPO/PA6 blend increases the tensile modulus and storage modulus of the blends, whereas decreases slightly the tensile strength. At the same time, the glass transition temperatures (T g ) of PA6 and PPO are enhanced. DT g , the gap between the T g of PA6 and PPO, decreases with the addition of carbon nanotubes due to the stronger interaction of carbon nanotubes with PA6 than PPO. A similar tendency was found in the storage modulus (G 0 ) and complex viscosity (g*) of the composites. The dispersion state of different carbon nanotubes and their interaction with polymer components are different, which causes the different confinement effect to the macromolecular chains.

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mentioning

confidence: 99%

Influence of carbon nanotubes with different functional groups on the morphology and properties of PPO/PA6 blends

Shen

Guo

Cheng

et al. 2009

J of Applied Polymer Sci

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“…This coalescence suppression or coalescence barrier effect due to nanoparticle has been reported in other studies. 38,39 For clear observation, the PA6 phase has been etched by formic acid (Figure 5(c), (d), (e), and (f)). Without SWNTs, different physical forms of PA6 show no effect on morphology and phase continuity (Figure 5(e) and (f)).…”

Section: Resultsmentioning

confidence: 99%

Characterization and morphological development of polypropylene/polyamide 6 blends using polyamide 6 powder and single-walled carbon nanotube

Kang

Hwang

Jung

et al. 2019

Journal of Composite Materials

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In this study, polyamide 6 and polypropylene (50/50 weight ratio) blend with 2 wt.% of single-walled carbon nanotubes was prepared by melt processing. Cryo-milling process was employed to produce the micro-sized powder form of polyamide 6. In order to evaluate the influence of polyamide 6 powder (PNPS2) on the morphology of blend, granule form of polyamide 6 (NPS2) was employed for comparison. Improvement of thermal conductivity (about 31% increase) was observed via development of fiber-like morphology of PNPS2, compared to NPS2 (co-continuous morphology). Due to small and coarse shape of polyamide 6 powder, it may hinder the coalescence of the polyamide 6 phase, resulting in the reduction of polyamide 6 nodules size, contributing to the development of fiber-like morphology. No statistical difference was found in the mechanical property of PNPS2 and NPS2. With a 60.43% of phase continuity of polyamide 6 phase in PNPS2, fiber-like morphology contributed to the increase of effective single-walled carbon nanotubes volume concentration with more filler-to-filler connection, resulting in the improvement in thermal conductivity.

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“…Polyolefi ns such as polypropylene (PP) [117][118][119] , polyethylene (PE) 120,121 , copolymers such as poly(ethyleneco-vinyl acetate) (EVA) [134][135][136][137][138] , ethylene propylene diene methylene linkage rubber (EPDM) [139][140][141][142] and poly (1-butene) 143,144 , have been used to prepare carbon nanotube filled nanocomposites with varying degrees of success. A practical advantage of using carbon nanotubes in olefi nic polymers is their organophilic nature that favours dispersion in the polyolefin matrix.…”

Section: E F F E C T I V E P Ro P E R T I E S a N D Behaviour Of Nanomentioning

confidence: 99%

Present Status and Key Challenges of Carbon Nanotubes Reinforced Polyolefins: A Review on Nanocomposites Manufacturing and Performance Issues

Prashantha

Soulestin

Lacrampe

et al. 2009

Polymers and Polymer Composites

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Carbon nanotube reinforcement is a key emerging technology to simultaneously impart enhanced mechanical properties while adding multifunctional characteristics to polymer materials and systems. The promise of extraordinary improvement in-end use properties of polyolefin/carbon nanotube hybrid systems has spurred great interest and intensive activity in academics and industries. This review offers a comprehensive discussion of the preparation, compounding, properties and applications of such nanocomposites. The processing, dispersion and orientation of nanotubes, as well as the characterisation of physical and mechanical properties of carbon nanotube filled polyolefins are discussed. In particular the scientific principles and mechanisms in relation to the methods of manufacturing are highlighted, with an outlook towards commercial applications.

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Carbon Nanotubes can Enhance Phase Dispersion in Polymer Blends

Cited by 26 publications

References 24 publications

Influence of carbon nanotubes with different functional groups on the morphology and properties of PPO/PA6 blends

Influence of carbon nanotubes with different functional groups on the morphology and properties of PPO/PA6 blends

Characterization and morphological development of polypropylene/polyamide 6 blends using polyamide 6 powder and single-walled carbon nanotube

Present Status and Key Challenges of Carbon Nanotubes Reinforced Polyolefins: A Review on Nanocomposites Manufacturing and Performance Issues

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