Effect of chemical crosslinking degree on mechanical properties of bacterial cellulose/poly(vinyl alcohol) composite membranes
β Scribed by Yang, Liang; Yang, Qun; Lu, Da-nian
- Book ID
- 120194054
- Publisher
- Springer Vienna
- Year
- 2013
- Tongue
- English
- Weight
- 270 KB
- Volume
- 145
- Category
- Article
- ISSN
- 0026-9247
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## Abstract We report the swelling ratio and network structure of a poly(vinyl alcohol) (PVA) gel chemically crosslinked by glutaraldehyde with different degrees of crosslinks. Microcrystallites were formed in a chemical PVA gel during a drying process and were confirmed by XβRay diffraction (XRD)
## Abstract A protonβexchange membrane for a direct methanol fuel cell was prepared by modifying the chemical structure of poly(vinyl alcohol) (PVA) via a sulfonation. The sulfonation was carried out by using sulfophthalic acid (sPTA) as a sulfonating agent. The sulfonated PVA membranes, with a var