What is thermal properties of polymer?

Thermal properties play a large role in the behavior of polymers, causing them to react in different ways. Amorphous polymers contain chains that are not ordered in crystalline structures. The thermal properties of an amorphous structure are referred to as the glass transition temperature, denoted as Tg.

Is graphene oxide thermally conductive?

Graphene oxide (GO), an oxidation product of graphene [1], has attracted much attention in recent years as a two-dimensional material [2] because of its unique mechanical and thermal properties [3–5]. Graphene is the best known thermal conductive material. Its thermal conductivity can reach 2000–5000 W/mK [6].

What is the thermal conductivity of graphene?

~4000 Wm−1
Additionally, graphene is highly thermally conductive, exhibiting a thermal conductivity of ~4000 Wm−1 K−1 [15,16,17].

What is an unusual thermal property of graphene?

The unusual thermal properties of graphene include very high in-plane thermal conductivity (strongly affected by interfacial interactions, atomic defects, and edges) and relatively low out-of-plane thermal conductance.

What are the chemical properties of polymers?

Melting point, boiling point, strength, hardness, density, color, opaqueness, transparency, and electrical conductivity are among the physical properties they might mention. Chemical reactivity such as combustion and biodegradability are common chemical properties.

What is the thermal conductivity of polymer?

The thermal conductivity of bulk polymers is usually very low, on the order of 0.1–0.5 W·m−1 K−1, which is due to the complex morphology of polymer chains [6].

Is reduced graphene oxide conductive?

Graphene is a useful material because of its excellent electronic and physical properties. Results for reduced graphene oxide film that has been reduced with hydroiodic acid show an electrical conductivity of 103.3 S cm−1 with better flexibility compared to rGOs reduced by hydrobromic acid and hydrazine hydrate.

Is graphene a good thermal insulator?

Graphene is considered an excellent heat conductor, and several studies have found it to have unlimited potential for heat conduction based on the size of the sample, contradicting the law of thermal conduction (Fourier’s law) in the micrometer scale.

What is graphene thermal?

Graphene is a two-dimensional (2D) material with over 100-fold anisotropy of heat flow between the in-plane and out-of-plane directions. High in-plane thermal conductivity is due to covalent sp2 bonding between carbon atoms, whereas out-of-plane heat flow is limited by weak van der Waals coupling.

What are the main properties of polymers?

Some of the useful properties of various engineering polymers are high strength or modulus to weight ratios (light weight but comparatively stiff and strong), toughness, resilience, resistance to corrosion, lack of conductivity (heat and electrical), color, transparency, processing, and low cost.

What are the different properties of polymers?

Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on.