Temperature and humidity effects on the mechanical properties of polymeric nanocomposites

R. Asmatulu, S. Gokathoti, Haitao Liao, C. Yip

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An environmental testing was conducted on polymeric nanocomposites fabricated by dispersing the carbon nanotubes (CNTs) into polymeric epoxy resins in order to determine their shelf life, reliability, stability, as well as other property changes as a function of temperature and humidity. In this study, various multi wall CNTs (∼140 nm diameter and ∼7μm length) ranging from 0.5% to 2.0% were initially dispersed in ethanol using a magnetic stirrer, and then an epoxy resin was added to the mixtures under continuous stirring. When the solvent completely evaporated after 18 hours of stirring, a hardener was added to the dispersion. The mixtures were then poured into rectangular shape molds and cured for 48 hours at the room temperature and pressure. Furthermore, a few samples of plain epoxy without nanotubes were also cast for comparison purposes. Dog-bone specimens were tested on a tensile testing machine after different hours of degradation in an environmental chamber. The experimental results showed that the yield stress, ultimate tensile strength and modulus of elasticity gradually reduced over time, indicating that nanocomposites were highly dependent on the humidity and temperature conditions. The results provide a useful guideline for a variety of applications of the nanocomposites in the future.

Original languageEnglish (US)
Title of host publicationASME International Mechanical Engineering Congress and Exposition, Proceedings
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages965-970
Number of pages6
Volume12
EditionPART B
ISBN (Print)9780791843857
DOIs
StatePublished - 2010
Externally publishedYes
EventASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009 - Lake Buena Vista, FL, United States
Duration: Nov 13 2009Nov 19 2009

Other

OtherASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009
CountryUnited States
CityLake Buena Vista, FL
Period11/13/0911/19/09

Fingerprint

Atmospheric humidity
Nanocomposites
Epoxy resins
Mechanical properties
Carbon nanotubes
Elastic moduli
Environmental testing
Environmental chambers
Tensile testing
Molds
Temperature
Nanotubes
Yield stress
Bone
Ethanol
Tensile strength
Degradation

Keywords

  • Carbon nanotubes
  • Degradation and mechanical properties
  • Polymeric nanocomposite

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Asmatulu, R., Gokathoti, S., Liao, H., & Yip, C. (2010). Temperature and humidity effects on the mechanical properties of polymeric nanocomposites. In ASME International Mechanical Engineering Congress and Exposition, Proceedings (PART B ed., Vol. 12, pp. 965-970). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2009-12337

Temperature and humidity effects on the mechanical properties of polymeric nanocomposites. / Asmatulu, R.; Gokathoti, S.; Liao, Haitao; Yip, C.

ASME International Mechanical Engineering Congress and Exposition, Proceedings. Vol. 12 PART B. ed. American Society of Mechanical Engineers (ASME), 2010. p. 965-970.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Asmatulu, R, Gokathoti, S, Liao, H & Yip, C 2010, Temperature and humidity effects on the mechanical properties of polymeric nanocomposites. in ASME International Mechanical Engineering Congress and Exposition, Proceedings. PART B edn, vol. 12, American Society of Mechanical Engineers (ASME), pp. 965-970, ASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009, Lake Buena Vista, FL, United States, 11/13/09. https://doi.org/10.1115/IMECE2009-12337
Asmatulu R, Gokathoti S, Liao H, Yip C. Temperature and humidity effects on the mechanical properties of polymeric nanocomposites. In ASME International Mechanical Engineering Congress and Exposition, Proceedings. PART B ed. Vol. 12. American Society of Mechanical Engineers (ASME). 2010. p. 965-970 https://doi.org/10.1115/IMECE2009-12337
Asmatulu, R. ; Gokathoti, S. ; Liao, Haitao ; Yip, C. / Temperature and humidity effects on the mechanical properties of polymeric nanocomposites. ASME International Mechanical Engineering Congress and Exposition, Proceedings. Vol. 12 PART B. ed. American Society of Mechanical Engineers (ASME), 2010. pp. 965-970
@inproceedings{1c0869fab4a84b7abed27fa68395bb47,
title = "Temperature and humidity effects on the mechanical properties of polymeric nanocomposites",
abstract = "An environmental testing was conducted on polymeric nanocomposites fabricated by dispersing the carbon nanotubes (CNTs) into polymeric epoxy resins in order to determine their shelf life, reliability, stability, as well as other property changes as a function of temperature and humidity. In this study, various multi wall CNTs (∼140 nm diameter and ∼7μm length) ranging from 0.5{\%} to 2.0{\%} were initially dispersed in ethanol using a magnetic stirrer, and then an epoxy resin was added to the mixtures under continuous stirring. When the solvent completely evaporated after 18 hours of stirring, a hardener was added to the dispersion. The mixtures were then poured into rectangular shape molds and cured for 48 hours at the room temperature and pressure. Furthermore, a few samples of plain epoxy without nanotubes were also cast for comparison purposes. Dog-bone specimens were tested on a tensile testing machine after different hours of degradation in an environmental chamber. The experimental results showed that the yield stress, ultimate tensile strength and modulus of elasticity gradually reduced over time, indicating that nanocomposites were highly dependent on the humidity and temperature conditions. The results provide a useful guideline for a variety of applications of the nanocomposites in the future.",
keywords = "Carbon nanotubes, Degradation and mechanical properties, Polymeric nanocomposite",
author = "R. Asmatulu and S. Gokathoti and Haitao Liao and C. Yip",
year = "2010",
doi = "10.1115/IMECE2009-12337",
language = "English (US)",
isbn = "9780791843857",
volume = "12",
pages = "965--970",
booktitle = "ASME International Mechanical Engineering Congress and Exposition, Proceedings",
publisher = "American Society of Mechanical Engineers (ASME)",
edition = "PART B",

}

TY - GEN

T1 - Temperature and humidity effects on the mechanical properties of polymeric nanocomposites

AU - Asmatulu, R.

AU - Gokathoti, S.

AU - Liao, Haitao

AU - Yip, C.

PY - 2010

Y1 - 2010

N2 - An environmental testing was conducted on polymeric nanocomposites fabricated by dispersing the carbon nanotubes (CNTs) into polymeric epoxy resins in order to determine their shelf life, reliability, stability, as well as other property changes as a function of temperature and humidity. In this study, various multi wall CNTs (∼140 nm diameter and ∼7μm length) ranging from 0.5% to 2.0% were initially dispersed in ethanol using a magnetic stirrer, and then an epoxy resin was added to the mixtures under continuous stirring. When the solvent completely evaporated after 18 hours of stirring, a hardener was added to the dispersion. The mixtures were then poured into rectangular shape molds and cured for 48 hours at the room temperature and pressure. Furthermore, a few samples of plain epoxy without nanotubes were also cast for comparison purposes. Dog-bone specimens were tested on a tensile testing machine after different hours of degradation in an environmental chamber. The experimental results showed that the yield stress, ultimate tensile strength and modulus of elasticity gradually reduced over time, indicating that nanocomposites were highly dependent on the humidity and temperature conditions. The results provide a useful guideline for a variety of applications of the nanocomposites in the future.

AB - An environmental testing was conducted on polymeric nanocomposites fabricated by dispersing the carbon nanotubes (CNTs) into polymeric epoxy resins in order to determine their shelf life, reliability, stability, as well as other property changes as a function of temperature and humidity. In this study, various multi wall CNTs (∼140 nm diameter and ∼7μm length) ranging from 0.5% to 2.0% were initially dispersed in ethanol using a magnetic stirrer, and then an epoxy resin was added to the mixtures under continuous stirring. When the solvent completely evaporated after 18 hours of stirring, a hardener was added to the dispersion. The mixtures were then poured into rectangular shape molds and cured for 48 hours at the room temperature and pressure. Furthermore, a few samples of plain epoxy without nanotubes were also cast for comparison purposes. Dog-bone specimens were tested on a tensile testing machine after different hours of degradation in an environmental chamber. The experimental results showed that the yield stress, ultimate tensile strength and modulus of elasticity gradually reduced over time, indicating that nanocomposites were highly dependent on the humidity and temperature conditions. The results provide a useful guideline for a variety of applications of the nanocomposites in the future.

KW - Carbon nanotubes

KW - Degradation and mechanical properties

KW - Polymeric nanocomposite

UR - http://www.scopus.com/inward/record.url?scp=77954247617&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954247617&partnerID=8YFLogxK

U2 - 10.1115/IMECE2009-12337

DO - 10.1115/IMECE2009-12337

M3 - Conference contribution

SN - 9780791843857

VL - 12

SP - 965

EP - 970

BT - ASME International Mechanical Engineering Congress and Exposition, Proceedings

PB - American Society of Mechanical Engineers (ASME)

ER -