Synthesis and shape memory performance of polyurethane/graphene nanocomposites

Kim, J.T.; Kim, B.K.; Kim, E.Y.; Park, H.C.; Jeong, Han Mo

doi:10.1016/j.reactfunctpolym.2013.10.004

Cited by 85 publications

(33 citation statements)

References 31 publications

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“…In general, elongation at break always dramatically decreases with the increasing amount of fillers. [44][45][46] However, in this study, the elongation at break decreases slightly. For example, the elongation at break decreased by only 8.6% as the loading of NH 2 -RGO in WPU matrix is 1.0 wt%.…”

Section: Mechanical and Thermal Properties Of Nh 2 -Rgo/ Wpu Nanocompcontrasting

confidence: 66%

Preparation and properties of amine-functionalized reduced graphene oxide/waterborne polyurethane nanocomposites

Shi

Zhang

2015

High Performance Polymers

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Amine-functionalized reduced graphene oxide (NH 2 -RGO), with primary amine (-NH 2 ) groups linked onto surfaces by toluene-2,4-diisocynate), was successfully synthesized. Subsequently, the as-prepared NH 2 -RGO nanoplatelets were covalently incorporated into a waterborne polyurethane (WPU) matrix to fabricate NH 2 -RGO/WPU nanocomposites by the reaction of -NH 2 groups with the isocyanate-terminated polyurethane prepolymer. Electron microscopic observations confirmed that the NH 2 -RGO nanoplatelets were homogenously dispersed in the WPU matrix. The NH 2 -RGO/ WPU nanocomposites exhibited a significant improvement in their mechanical and thermal properties. The tensile strength and storage modulus of the nanocomposites increased by 73% and 973%, respectively, with the addition of 1.0 wt% NH 2 -RGO. The thermal degradation temperature was enhanced by about 40 C compared with the neat WPU. Meanwhile, the thermal conductivity increased by about 258%.

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Section: Mechanical and Thermal Properties Of Nh 2 -Rgo/ Wpu Nanocompcontrasting

confidence: 66%

Preparation and properties of amine-functionalized reduced graphene oxide/waterborne polyurethane nanocomposites

Shi

Zhang

2015

High Performance Polymers

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“…Then, the reaction mixture was poured into methylene chloride (1.5 L) to coagulate the product. The product was filtered, washed with additional methylene chloride (1.5 L) and dried under vacuum [18]. Table 2 and Scheme 2 respectively show the formulation to prepare the PU/iTRG nanocomposites and overall reaction scheme to prepare the PU/iTRG nanocomposites, respectively.…”

Section: Preparation Of Itrgmentioning

confidence: 99%

“…Generally, chemical hybridization on the nanoscale is superior to physical blending on the macro-scale due to the fine dispersion and improved interfaces between the polymer and filler. Chemically-incorporated fillers provide multifunctional crosslinks that augment the rubber elasticity and strain recovery [16][17][18] as well as the conventional reinforcement.…”

Section: Introductionmentioning

confidence: 99%

“…Chemically-modified TRG can be incorporated into the polymer by covalent bonding [18], which generally makes fine dispersion of TRG in polymer matrix and augments the electrical conductive of the composite [21]. On the other hand, little has been evolved from the literature survey for the use of graphene as electroactive shape memory materials [22,23].…”

Section: Introductionmentioning

confidence: 99%

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Electroactive shape memory performance of polyurethane/graphene nanocomposites

Kim

Jeong

Park

et al. 2015

Reactive and Functional Polymers

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“…The modification of PU with graphene is a way of developing a new generation of materials for a wider spectrum of industrial applications. PU/graphene nanocomposites may display significant improvements in mechanical and thermal properties [29,30], the shape-memory effect [31,32], electromagnetic shielding capabilities [33], and conductivity [34]. Table 1.…”

Section: Introductionmentioning

confidence: 99%

Study of the effect of thermally reduced graphene oxide on the physical and mechanical properties of flexible polyurethane foams

2015

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Flexible polyurethane (PU) foams were obtained from a two-component system via the one-step method. The foams were modified with thermally reduced graphene oxide added in the amount equal to 0.25, 0.5, and 0.75 wt%. The morphology, static and dynamic properties, and thermal stability of modified foams were determined. The application of carbon filler resulted in the visible increase in the cell size, apparent density, and rigidity of the modified systems, as confirmed by the measurements of glass transition temperature. Glass transition temperature increased with increasing content of nanofiller. In addition, thermally reduced graphene oxide had an effect on the thermal stability of the obtained foam systems. The addition of 0.5 wt% of nanofiller resulted in an increase in T 5 by 168C compared with the reference foam. This study also demonstrated that after exceeding a specific content of thermally reduced graphene oxide, that is, 0.5%, the physicochemical properties of the obtained systems start to deteriorate. The research results showed that thermally reduced graphene oxide can be successfully used as a modifier of mechanical and thermal properties in flexible PU foams. POLYM. COMPOS., 00:000-000, 2015.

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Synthesis and shape memory performance of polyurethane/graphene nanocomposites

Cited by 85 publications

References 31 publications

Preparation and properties of amine-functionalized reduced graphene oxide/waterborne polyurethane nanocomposites

Preparation and properties of amine-functionalized reduced graphene oxide/waterborne polyurethane nanocomposites

Electroactive shape memory performance of polyurethane/graphene nanocomposites

Study of the effect of thermally reduced graphene oxide on the physical and mechanical properties of flexible polyurethane foams

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