Abstract
Internal energy and entropy contribution to the elasticity of carbon nanotube reinforced polydimethylsiloxane (PDMS) is evaluated using statistical theory of rubber elasticity. Stress–temperature measurements were performed and the data was used to calculate the internal energy contribution to elastic stress. Interesting aspects such as increase in energy and low entropy contribution to the elasticity of carbon nanotube reinforced PDMS is observed. This can be related t o the deformation behavior of the network chains of pristine elastomers and the directional reorientation of nanotube entanglements. While the entropy change is associated with reorientation or directional preference of the carbon nanotube entanglements, the internal energy change is associated with structural bending or stretching of the nanotubes. A reversible deformation of nanotube entanglements complements rubber like elasticity and the present study gives insights into the thermoelasticity of reinforced elastomers as well as the elastic behavior of carbon nanotube entanglements inside a polymer matrix.
Acknowledgments
Dr. Jinu Paul gratefully acknowledges the support from Department of Chemistry, National University of Singapore and Nanoscience & Nanotechnology Initiative (NUSNNI) for the experimental works.
Author contribution: Entire author has accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Competing interest: The author declares no conflicts of interest regarding this article.
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© 2020 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Material properties
- Thermoelastic characterization of carbon nanotube reinforced PDMS elastomer
- Effect of blending procedures and reactive compatibilizers on the properties of biodegradable poly(butylene adipate-co-terephthalate)/poly(lactic acid) blends
- The effects of morphological variation and polymer/polymer interface on the tensile modulus of binary polymer blends: a modeling approach
- Effect of gamma radiation on the structural, thermal and optical properties of PMMA/Sn0.75Fe0.25S2 nanocomposite
- Preparation and assembly
- Elaboration and characterization of multilayer polymeric membranes: effect of the chemical nature of polymers
- Fabrication and charge storage capacitance of PPY/TiO2/PPY jacket nanotube array
- Antimicrobial magnetic poly(GMA) microparticles: synthesis, characterization and lysozyme immobilization
- Engineering and processing
- Influence of low-fracture-fiber mechanism on fiber/melt-flow behavior and tensile properties of ultra-long-glass-fiber-reinforced polypropylene composites injection molding
- Bilayer PMMA antireflective coatings via microphase separation and MAPLE
Articles in the same Issue
- Frontmatter
- Material properties
- Thermoelastic characterization of carbon nanotube reinforced PDMS elastomer
- Effect of blending procedures and reactive compatibilizers on the properties of biodegradable poly(butylene adipate-co-terephthalate)/poly(lactic acid) blends
- The effects of morphological variation and polymer/polymer interface on the tensile modulus of binary polymer blends: a modeling approach
- Effect of gamma radiation on the structural, thermal and optical properties of PMMA/Sn0.75Fe0.25S2 nanocomposite
- Preparation and assembly
- Elaboration and characterization of multilayer polymeric membranes: effect of the chemical nature of polymers
- Fabrication and charge storage capacitance of PPY/TiO2/PPY jacket nanotube array
- Antimicrobial magnetic poly(GMA) microparticles: synthesis, characterization and lysozyme immobilization
- Engineering and processing
- Influence of low-fracture-fiber mechanism on fiber/melt-flow behavior and tensile properties of ultra-long-glass-fiber-reinforced polypropylene composites injection molding
- Bilayer PMMA antireflective coatings via microphase separation and MAPLE