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Poly(vinyl alcohol)/Cellulose Nanofibril Hybrid Aerogels with an Aligned Microtubular Porous Structure and Their Composites with Polydimethylsiloxane
- Source :
- ACS Applied Materials & Interfaces. 7:7436-7444
- Publication Year :
- 2015
- Publisher :
- American Chemical Society (ACS), 2015.
-
Abstract
- Superhydrophobic poly(vinyl alcohol) (PVA)/cellulose nanofibril (CNF) aerogels with a unidirectionally aligned microtubular porous structure were prepared using a unidirectional freeze-drying process, followed by the thermal chemical vapor deposition of methyltrichlorosilane. The silanized aerogels were characterized using various techniques including scanning electron microscopy (SEM), Fourier transform infrared spectroscopy, and contact angle measurements. The structure of the aerogels fully filled with polydimethylsiloxane (PDMS) was confirmed by SEM and optical microscopy. The mechanical properties of the resulting PDMS/aerogel composites were examined using both compressive and tensile tests. The compressive and tensile Young's moduli of the fully filled PDMS/aerogel composites were more than 2-fold and 15-fold higher than those of pure PDMS. This study provides a novel alternative approach for preparing high performance polymer nanocomposites with a bicontinuous structure.
- Subjects :
- Vinyl alcohol
Nanocomposite
Materials science
Polydimethylsiloxane
technology, industry, and agriculture
Aerogel
macromolecular substances
Methyltrichlorosilane
Contact angle
chemistry.chemical_compound
chemistry
Ultimate tensile strength
General Materials Science
Composite material
Fourier transform infrared spectroscopy
Subjects
Details
- ISSN :
- 19448252 and 19448244
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- ACS Applied Materials & Interfaces
- Accession number :
- edsair.doi.dedup.....57f637ca21794c01c748c77a3503c928