Polyethylene Terephthalate/Trimellitic Anhydride Modified Graphene Nanocomposites
Source abstract
Abstract
Graphene was modified with trimellitic anhydride groups, and its polyethylene-terephthalate-based (PET-based) nanocomposites were prepared by melt-mixing. Percolation thresholds observed from changes to the electrical conductivity and storage moduli of nanocomposite melts suggest that the dispersion levels of unmodified graphene and those of modified graphene in PET matrix were the same. An enhancement of G′ and unexpectedly higher [η] for modified graphene at low concentration suggest that PET chains were grafted on the graphene surface creating a coupled network via covalent bonding. The bulk mechanical properties of amorphous nanocomposites were evaluated by tensile-testing. The nanocomposites with modified graphene also displayed an enhanced Young’s modulus as well as higher elongation compared to nanocomposites prepared with unmodified graphene. Differential scanning calorimetry, Fourier-transform infrared spectroscopy, and Raman spectroscopy results obtained on stretched nanocomposites suggest that both strain-induced orientation and strain-induced crystallization were suppressed by the modified graphene.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Graphene research and applications · Graphene and Nanomaterials Applications · Polymer crystallization and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
Films & Film Products Research Laboratories, Toray Industries, Inc., 1-1-1 Sonoyama, Otsu City, Shiga 520-8558, Japan
Department of Chemical Engineering, The Petroleum Institute, Abu Dhabi 2533, United Arab Emirates
Department of Mechanical Engineering, Myongji University, First Engineering Building, 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggi-do 449-728, Korea
Materials Science Laboratories, Toray Research Center, Inc., 3-3-7 Sonoyama, Otsu City, Shiga 520-8567, Japan
Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1-S8-33, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
Funding
Toray Industries
References (83)
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