Effect of functionalized multi-walled carbon nanotubes on physicomechanical properties of silicone rubber nanocomposites

Abstract

Ethyl-4-aminocinnamate functionalized multi-walled carbon nanotubes–reinforced silicone rubber nanocomposites were developed by means of compounding (two roll-mill) and molding (compression). Meanwhile, multi-walled carbon nanotubes were synthesized using a catalytic chemical vapor deposition technique and functionalized using ethyl-4-aminocinnamate. The as-synthesized and functionalized multi-walled carbon nanotubes were subjected to Raman spectroscopy, Fourier-transform infrared spectroscopy, field emission scanning electron microscope, and transmission electron microscopy to know the presence of the functional group with its shape and size. Further, silicone rubber nanocomposites were subjected to study its mechanical (tensile strength, Young's modulus, and elongation at break), thermal (stability), and physical (swelling index and hardness) properties. The amount of loading of functionalized multi-walled carbon nanotubes was from 0 to 1 wt%. It was observed that with the increase in the amount of functionalized multi-walled carbon nanotubes loading, the properties were found to be increased. This improvement was due to uniform dispersion with the alignment of functionalized multi-walled carbon nanotubes inside the rubber matrix. Moreover, this improvement was due to weak functionalizing materials which make the surface smooth and glossy so as to facilitate uniform dispersion of materials. Also, thermal stability was found to be increased due to shifting of heat uniformly throughout the rubber matrix. Certainly, it reduces the swelling indices of silicone rubber as the chains are closely packed which does not allow a solution to get penetrated. This improvement in properties of silicone rubber nanocomposites was reflected from field emission scanning electron microscope, which shows uniform dispersion with the alignment of functionalized multi-walled carbon nanotubes inside the rubber matrix.

Electroactive shape memory polyurethane composites reinforced with octadecyl isocyanate-functionalized multi-walled carbon nanotubes

“…This suggests an increase in the average size of the C-C sp 3 domain after functionalization. This may be because modification with octadecyl isocyanate introduces long aliphatic chains on the nanotube surface (Tamore et al, 2019).…”

X-ray radiation shielding and microscopic studies of flexible and moldable bandage byin situsynthesized cerium oxide nanoparticles/MWCNTS nanocomposite for healthcare applications

“…14 Tamore et al (2019) claimed that functionalized multi-walled carbon nanotubes impact the physicomechanical properties of silicone rubber nanocomposites. 15 Polydimethylsiloxane (PDMS), a high-molecular-weight, non-toxic, non-ammable, inexpensive, transparent, effective, and essential silicone-organic rubber polymer with hydrophobic and hydrocarbon methyl groups, has been utilized to make radiation shielding material. 16,17 The PDMS possesses excellent chemical and biocompatibility properties and shows good dispersibility in developed material with vacillating substances.…”

Study on characterization methods of the deformation properties of soft material polydimethylsiloxane using the indentation test

“…Mechanical property is one of the integral indicators for soft materials' application. Characteristic parameters such as Young's modulus, tensile strength and breaking elongation can be used to characterize the mechanical properties of soft materials [16][17][18][19]. Compared with metal materials and other polymer materials, large deformation under small load is a typical characteristic of soft materials.…”