Electric field manipulation of cellulose whiskers in polyvinyl acetate

Sanjay V. Kalidindi, Zoubeida Ounaies, Hamid Kaddami

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

Abstract

Cellulose whiskers as inclusions have shown a lot of promise due to their potential to enhance mechanical and piezoelectric response of polymers. In addition, CWs are high aspect ratio particles; by aligning them in polymers, improved and anisotropic physical properties could be achieved. In this study, we investigate the effect of AC electric field on the alignment of CWs in a solution of PVAc and DMF. CWs were dispersed as small bundles (<10μm). Alignment and chain formation was found to be a function of electric field magnitude, frequency and time. Dielectric constant of the solutions was studied as a function of applied electric field magnitude, frequency and duration. Significant improvements in dielectric constant were observed for the aligned cases as compared to random case. Optimum properties were achieved at 100 - 200 Vpp/mm and 50 KHz for duration of 20 minutes. Future work will focus on processing thin films with individually dispersed CWs, and improving their alignment to further increase the electrical and mechanical properties.

Original languageEnglish (US)
Title of host publicationASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2010
PublisherAmerican Society of Mechanical Engineers
Pages233-238
Number of pages6
ISBN (Print)9780791844168
DOIs
StatePublished - 2010
EventASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2010 - Philadelphia, PA, United States
Duration: Sep 28 2010Oct 1 2010

Publication series

NameASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2010
Volume2

Other

OtherASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2010
CountryUnited States
CityPhiladelphia, PA
Period9/28/1010/1/10

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Biomaterials

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