Morphological and mechanical properties of bile salt modified multi-walled carbon nanotube/poly(vinyl alcohol) nanocomposites |
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| Affiliation: | 1. State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, PR China;2. Institute of Modern Physical Technology, Fuzhou University, Fuzhou 350002, PR China;1. Centro de Investigación en Materiales Avanzados, S.C., CP 31109 Chihuahua, Chihuahua, Mexico;2. Departamento de Ciencias Químico Biológicas, Universidad de Sonora, CP 83000 Hermosillo, Sonora, Mexico;3. Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, CP 83000 Hermosillo, Sonora, Mexico;4. Unidad de Materiales, Centro de Investigación Científica de Yucatán, Calle 43 No. 130 Col. Chuburná de Hidalgo, Mérida, Yucatán CP 97200, Mexico;5. Departamento de Ingeniería Química, Coordinación Académica Región Altiplano (COARA), Universidad Autónoma de San Luis Potosí, Matehuala, San Luis Potosí CP 78700, Mexico;1. Energy Department, G. Marconi University, Rome, Italy;2. Interdepartmental Centre for Research and Dissemination of Renewable Energy, Tuscia University, Orte (VT), Italy;3. DIAEE - Electrical Engineering Area, Sapienza University, Rome, Italy;4. DIMA - Mechanic Engineering Area, Sapienza University, Rome, Italy;1. Graduate School of Engineering, University of Fukui, 1-2-4 Kanawa-cho, Tsuruga, Fukui 914-0055, Japan;2. Research Institute of Nuclear Engineering, University of Fukui, Japan;1. Department of Oral and Maxillofacial Surgery and Pathology, University of Mississippi Medical Center, Jackson, MS, USA;2. Department of Oral and Maxillofacial Diagnostic Sciences, University of Florida College of Dentistry, Gainesville, Florida, USA;1. Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy;2. Department of Physical Chemistry, Faculty of Science, University of Santiago de Compostela, Avda. Alfonso X El Sabio s/n, 27002 Lugo, Spain;3. Institute of Complex Systems (ISC) – CNR, UOS Sapienza, P.le Aldo Moro 2, 00185 Rome, Italy;4. Division of Physical Chemistry, Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, SE-221 00 Lund, Sweden |
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| Abstract: | Non-covalently functionalized carbon nanotubes are more attractive for multifunction composites because they preserve nearly all the nanotubes’ intrinsic properties and enhance the electroconductivity of polymer composites. However, It is seldom reported that they make dramatic improvement in mechanical properties. In this paper we have successfully prepared a poly(vinyl alcohol) (PVA) nanocomposite with a non-covalently functionalized carbon nanotube (DOC-MWNTs) using a simple method, which achieve a significant enhancement in mechanical properties. The tensile modulus and tensile yield strength of the PVA composite film containing 5 wt% DOC-MWNTs increased by 140% and 65%, respectively, comparing to the pure PVA film. FT-IR, TEM, SEM, and DSC were used to investigate the MWNTs and PVA/MWNTs nanocomposites. The results show that the separately dispersed DOC-MWNTs filler throughout the PVA matrix and the strong adhesion between the DOC-MWNTs filler and the PVA matrix are responsible for the significant reinforcement of the mechanical properties of the composite prepared. |
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