Study of mechanical anisotropy of single walled carbon nanotube and polyvinyl alcohol polymer nanocomposite with a controlled alignment process
Type
ArticleKAUST Department
Physical Science and Engineering (PSE) DivisionDate
2022-09-29Embargo End Date
2023-09-29Permanent link to this record
http://hdl.handle.net/10754/682314
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Show full item recordAbstract
Single Walled Carbon Nanotube (SWCNT) and polyvinyl alcohol (PVA) Polymer nanocomposites with the controlled mechanical alignment process have been used for structural anisotropy applications due to their desirable thermal and mechanical properties as well as their tunable degradability. In this work, we fabricated the nanocomposite scaffolds from forming hydrogels of individually dispersed SWCNTs and then partial backfilling with PVA polymer. Our fabrication method helps to minimize the aggregation of SWCNT and improve the degree of uniform dispersion of SWCNT in the polymer matrix. We further compared the mechanical properties in both directions of nanocomposite with different SWCNTs concentration. We observed that the tensile modulus increases more in the aligned direction than the normal to direction of SWCNTs at optimum 12wt% nanotube loading. Further, the nanotube networks suppress the polymer glass transition and extend the mechanical integrity of the polymer. The controlling internal orientation order of nanotubes with the help of alignment process in nanocomposite scaffolds can bring interesting highly structural anisotropic properties to a wide range of smart material industries such as aerospace, defense, and healthcare.Citation
Kalakonda, P., Banne, S., & Kalakonda, P. B. (2022). Study of mechanical anisotropy of single walled carbon nanotube and polyvinyl alcohol polymer nanocomposite with a controlled alignment process. Journal of Polymer Research, 29(10). https://doi.org/10.1007/s10965-022-03279-wSponsors
We thank to the Carnegie Mellon University, King Abdullah University of Science and Technology (KAUST) for financial support.Publisher
Springer Science and Business Media LLCJournal
JOURNAL OF POLYMER RESEARCHAdditional Links
https://link.springer.com/10.1007/s10965-022-03279-wae974a485f413a2113503eed53cd6c53
10.1007/s10965-022-03279-w