Crystallization of poly(ε-caprolactone)/MWCNT composites: A combined SAXS/WAXS, electrical and thermal conductivity study

Wurm, Andreas; Lellinger, Dirk; Минаков, А. А.; Skipa, Tetyana; Pötschke, Petra; Nicula, R.; Alig, Ingo; Schick, Christoph

doi:10.1016/j.polymer.2014.02.069

Cited by 86 publications

(75 citation statements)

References 55 publications

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“…In previous research [46,60,64,[67][68][69], different functional groups such as N-methylpyrrolidine, carboxyl and hydroxyl, urethane, phenylmethanol, primary amine groups and 2-hydroxyethylbenzocyclobutene were used to functionalize MWCNTs. In some cases, the MWCNTs were not modified [40,50,66,69]. In order to evaluate the efficiency of the MWCNTs as nucleating agents, it is necessary to compare their effect with that of the PCL self-nuclei or self-seeds.…”

Section: Nucleation and Crystallization Behaviourmentioning

confidence: 99%

“…No MWCNTs modification melt-mixing 0.2-0.5 wt% 0.20 wt% [40] No MWCNTs modification melt-mixing 0.05-5.0 wt% 0.30 wt% [41] No MWCNTs modification melt-mixing 0.5 wt% 2.00 wt% [42] Nitric acid-treatment in situ polymerization 0.5-5.0 wt% - [64] No MWCNTs modification melt blending 0.35-7.0 wt% 0.14 wt% [49] PC/MWCNTs masterbatch melt blending 0.5-4.0 wt% 0.5-1.0 wt% [50] interconnecting conductive pathway. The electrical conductivity values increased by more than one order of magnitude.…”

Section: Functionalization Technique Dispersion Technique Mwcnts Contmentioning

confidence: 99%

“…This is due to their low density, inertness and better compatibility than metal powders with most polymers. CNTs have shown to have greater potential than any other carbon-based nano-fillers (i.e., carbon black (CB), carbon nanofibres (CNF), and graphite) because of their unique one-dimensional structure with good electrical conductivity, as well as excellent mechanical and thermal properties [40][41][42]. These improved properties depend not only on the unique mechanical strength, large aspect ratio, and excellent thermal and electrical conductivities, but also on the alignment, adhesion, and dispersion in the polymer matrix.…”

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confidence: 99%

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Review on PCL, PBS, and PCL/PBS blends containing carbon nanotubes

Gumede¹,

Luyt²,

Müller³

2018

Express Polym. Lett.

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Abstract. Biodegradable polymers received considerable attention due to their contribution in the reduction of environmental concerns and the realization that global petroleum resources are finite. The development of double crystalline biobased blends such as poly(ε-caprolactone) (PCL) and poly(butylene succinate) (PBS) are particularly interesting because each component has an influence on the crystallization behaviour of the other component, and thus influences the strength and mechanical properties of a polymer blend. The lack of miscibility between PCL and PBS constitutes a bottleneck, and efforts have been made to improve the miscibility through the inclusion of copolymers. Having realized that incorporating conductive nanofillers such as carbon nanotubes (CNTs), (especially when the CNTs are functionalized or used as a masterbatch i.e., polycarbonate/MWCNTs masterbatch), into biopolymer matrices, can enhance the thermal and mechanical properties, as well as electrical and thermal conductivity, a lot of research was aimed at the production of bionanocomposites. This review paper discusses the properties of PCL, PBS, their blends, and their CNTs containing nanocomposites.

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Section: Nucleation and Crystallization Behaviourmentioning

confidence: 99%

Section: Functionalization Technique Dispersion Technique Mwcnts Contmentioning

confidence: 99%

mentioning

confidence: 99%

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Review on PCL, PBS, and PCL/PBS blends containing carbon nanotubes

Gumede¹,

Luyt²,

Müller³

2018

Express Polym. Lett.

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“…Therefore, it is probable that some crystallites are initially nucleated by the MWCNTs acting as shish but as the annealing temperature is increased, crystallites in the PET matrix also nucleate and grow. This scenario would imply that PET crystallites result from both nucleation in the PET matrix and at the surface of the MWCNTs [31].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Structure evolution in poly(ethylene terephthalate) (PET) – Multi-walled carbon nanotube (MWCNT) composite films during in-situ uniaxial deformation

Heeley

Hughes

Crabb

et al. 2016

Polymer

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Keywords: polymer multi-walled carbon nanotube composites; Small-and Wide-Angle X-Ray Scattering (SAXS/WAXS); crystalline morphology evolution, nucleating agents. ABSTRACTCombined small-and wide-angle X-ray scattering (SAXS/WAXS), mechanical and thermal techniques have been used to follow the morphology evolution in a series of poly(ethylene terephthalate) (PET) multiwall carbon nanotube (MWCNT) composite films during quasi solidstate uniaxial deformation at low strain rates. Uniaxially deformed PET-MWCNT films displayed improved mechanical properties compared with unfilled PET films. SAXS/WAXS data revealed a well oriented lamellar structure for unfilled PET films. In contrast, the PET-

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“…The presence of nanofillers causes only a small rise in PEO crystallinity and does not influence the polyaniline chain arrangement; hence its structure remains amorphous. Higher crystallinity content is usually observed in nanocomposites, which is due to the nucleation effect of nanoparticles dispersed into the polymer matrix [37]. The polymer crystallinity degree in the fabricated electrospun nanocomposites is not considerably higher because the rapid evaporation of the solvent during electrospinning prevents crystal nucleation [38].…”

Section: Resultsmentioning

confidence: 99%

Electrospun Polyaniline-Based Composite Nanofibers: Tuning the Electrical Conductivity by Tailoring the Structure of Thiol-Protected Metal Nanoparticles

Pierini

Lanzi

Nakielski

et al. 2017

Journal of Nanomaterials

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Composite nanofibers made of a polyaniline-based polymer blend and different thiol-capped metal nanoparticles were prepared using ex situ synthesis and electrospinning technique. The effects of the nanoparticle composition and chemical structure on the electrical properties of the nanocomposites were investigated. This study confirmed that Brust's procedure is an effective method for the synthesis of sub-10 nm silver, gold, and silver-gold alloy nanoparticles protected with different types of thiols. Electron microscopy results demonstrated that electrospinning is a valuable technique for the production of composite nanofibers with similar morphology and revealed that nanofillers are well-dispersed into the polymer matrix. X-ray diffraction tests proved the lack of a significant influence of the nanoparticle chemical structure on the polyaniline chain arrangement. However, the introduction of conductive nanofillers in the polymer matrix influences the charge transport noticeably improving electrical conductivity. The enhancement of electrical properties is mediated by the nanoparticle capping layer structure. The metal nanoparticle core composition is a key parameter, which exerted a significant influence on the conductivity of the nanocomposites. These results prove that the proposed method can be used to tune the electrical properties of nanocomposites.

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Crystallization of poly(ε-caprolactone)/MWCNT composites: A combined SAXS/WAXS, electrical and thermal conductivity study

Cited by 86 publications

References 55 publications

Review on PCL, PBS, and PCL/PBS blends containing carbon nanotubes

Review on PCL, PBS, and PCL/PBS blends containing carbon nanotubes

Structure evolution in poly(ethylene terephthalate) (PET) – Multi-walled carbon nanotube (MWCNT) composite films during in-situ uniaxial deformation

Electrospun Polyaniline-Based Composite Nanofibers: Tuning the Electrical Conductivity by Tailoring the Structure of Thiol-Protected Metal Nanoparticles

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