Facile preparation and thermal degradation studies of graphite nanoplatelets (GNPs) filled thermoplastic polyurethane (TPU) nanocomposites

Quan, Hongping; Zhang, Baoqing; Zhao, Qiang; Yuen, Richard K.K.; Li, Robert K.Y.

doi:10.1016/j.compositesa.2009.06.012

Cited by 229 publications

(116 citation statements)

References 36 publications

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“…[3][4][5] It is reported that graphene-based polymer nanocomposites show much improved mechanical and electrical properties when compared to other carbon filler based nanocomposites. [6][7][8][9] These unique properties have attracted researchers to investigate graphene as a reinforcing agent in biocompatible composite materials in order to improve mechanical, thermal and electrical properties. [10][11][12][13][14] Poly(ε-caprolactone) (PCl) is a biodegradable and biocompatible aliphatic polyester with good resistance to water, solvents and oil, synthesized by the ring opening polymerization of ε-caprolactone.…”

Section: Introductionmentioning

confidence: 99%

Covalently linked biocompatible graphene/polycaprolactone composites for tissue engineering

Sayyar¹,

Murray²,

Thompson³

et al. 2013

Carbon

236

156

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Two synthesis routes to graphene/polycaprolactone composites are introduced and the properties of the resulting composites compared. In the first method, mixtures are produced using solution processing of polycaprolactone and well dispersed, chemically reduced graphene oxide and in the second, an esterification reaction covalently links polycaprolactone chains to free carboxyl groups on the graphene sheets. This is achieved through the use of a stable anhydrous dimethylformamide dispersion of graphene that has been highly chemically reduced resulting in mostly peripheral ester linkages. The resulting covalently linked composites exhibit far better homogeneity and as a result, both Young's modulus and tensile strength more than double and electrical conductivities increase by 14 orders of magnitude over the pristine polymer at less than 10 per cent graphene content. In vitro cytotoxicity testing of the materials showed good biocompatibility resulting in promising materials for use as conducting substrates for the electrically stimulated growth of cells. Two synthesis routes to graphene/polycaprolactone composites are introduced and the properties of the resulting composites compared. In the first method, mixtures are produced using solution processing of polycaprolactone and well dispersed, chemically reduced graphene oxide and in the second, an esterification reaction covalently links polycaprolactone chains to free carboxyl groups on the graphene sheets. This is achieved through the use of a stable anhydrous dimethylformamide dispersion of graphene that has been highly chemically reduced resulting in mostly peripheral ester linkages. The resulting covalently linked composites exhibit far better homogeneity and as a result, both Young's modulus and tensile strength more than double and electrical conductivities increase by ≈ 14 orders of magnitude over the pristine polymer at less than 10 % graphene content. In vitro cytotoxicity testing of the materials showed good biocompatibility resulting in promising materials for use as conducting substrates for the electrically stimulated growth of cells.

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Section: Introductionmentioning

confidence: 99%

Covalently linked biocompatible graphene/polycaprolactone composites for tissue engineering

Sayyar¹,

Murray²,

Thompson³

et al. 2013

Carbon

236

156

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“…However, some carbon fillers such as CNTs still have drawbacks for the development of CNT reinforced polymer composites due to their high cost and difficult dispersion in polymer matrices [6,7]. Short carbon fibers (SCF) are one of the most popular candidates for the development of structural and functional SCF reinforced polymer composites because of their high surface-to-volume ratio, outstanding thermal, mechanical and electrical properties and good dispersion in polymer matrices [8,9]. Zhong et al [10] reported that SCFs were found to improve wear resistance of poly (ether ether ketone) (PEEK) based composites by carrying a main load between contact surfaces and protecting polymer matrices from severe abrasion.…”

Section: Introductionmentioning

confidence: 99%

Tribological properties of short carbon fibers reinforced epoxy composites

et al. 2014

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Short carbon fiber (SCF) reinforced epoxy composites with different SCF contents were developed to investigate their tribological properties. The friction coefficient and wear of the epoxy composites slid in a circular path against a steel pin inclined at 45° to a vertical axis and a steel ball significantly decreased with increased SCF content due to the solid lubricating effect of SCFs along with the improved mechanical strength of the composites. The scanning electron microscope (SEM) observation showed that the epoxy composites had less sensitive to surface fatigue caused by the repeated sliding of the counterparts than the epoxy. The tribological results clearly showed that the incorporation of SCFs was an effective way to improve the tribological properties of the epoxy composites.

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“…In contrast, the first applications using graphene as a compound material, in particular within a polymer matrix, are already available today [21,[79][80][81][82]. So far, applications include graphene-based touch-screens [83][84][85], coatings for thermal and electromagnetic shielding and conductive ink 2 .…”

Section: Graphene and Graphene Technologymentioning

confidence: 99%

Development of an Ultrafast Low-Energy Electron Diffraction Setup

Gulde

2015

Springer Theses

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Facile preparation and thermal degradation studies of graphite nanoplatelets (GNPs) filled thermoplastic polyurethane (TPU) nanocomposites

Cited by 229 publications

References 36 publications

Covalently linked biocompatible graphene/polycaprolactone composites for tissue engineering

Covalently linked biocompatible graphene/polycaprolactone composites for tissue engineering

Tribological properties of short carbon fibers reinforced epoxy composites

Development of an Ultrafast Low-Energy Electron Diffraction Setup

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