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Structure and Properties of Poly(vinyl alcohol)/Na+ Montmorillonite Nanocomposites
Abstract
Poly(vinyl alcohol)/sodium montmorillonite nanocomposites of various compositions were created by casting from a polymer/silicate water suspension. The composite structure study revealed a coexistence of exfoliated and intercalated MMT layers, especially for low and moderate silicate loadings. The inorganic layers promote a new crystalline phase different than the one of the respective neat PVA, characterized by higher melting temperature and a different crystal structure. This new crystal phase reflects on the composite materials properties. Namely, the hybrid polymer/silicate systems have mechanical, thermal, and water vapor transmission properties, which are superior to that of the neat polymer and its conventionally filled composites. For example, for a 5 wt % MMT exfoliated composite, the softening temperature increases by 25 °C and the Young's modulus triples with a decrease of only 20% in toughness, whereas there is also a 60% reduction in the water permeability. Furthermore, due to the nanoscale dispersion of filler, the nanocomposites retain their optical clarity.
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Citations
Cited by
SINHARAY, S., & BOUSMINA, M. (2005) · Progress in Materials Science · doi:10.1016/j.pmatsci.2005.05.002 · Cited by 1,611
Structural and mechanical properties of polymer nanocomposites
Tjong, S. C. (2006) · Materials Science and Engineering: R: Reports · doi:10.1016/j.mser.2006.06.001 · Cited by 1,531
Natural Biopolymer-Based Nanocomposite Films for Packaging Applications
Rhim, J.-W., & Ng, P. K. W. (2007) · Critical Reviews in Food Science and Nutrition · doi:10.1080/10408390600846366 · Cited by 849
Tang, X., & Alavi, S. (2011) · Carbohydrate Polymers · doi:10.1016/j.carbpol.2011.01.030 · Cited by 593
Cellulose whiskers reinforced polyvinyl alcohol copolymers nanocomposites
Roohani, M., Habibi, Y., Belgacem, N. M., Ebrahim, G., Karimi, A. N., & Dufresne, A. (2008) · European Polymer Journal · doi:10.1016/j.eurpolymj.2008.05.024 · Cited by 484
Metadata
- Authors
- Strawhecker, K. E., & Manias, E.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2000-09-07
- Volume
- 12
- Issue
- 10
- Pages
- 2943-2949
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W1968378480
- Cited by
- 790
- References
- 0
- FWCI
- 62.48
- Type
- journal article
- Language
- en
- Open access
- closed
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