We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Effect of degree of polymerization on synthesis of anorthite-type powder by wet-chemical method employing PVA.
- Authors
Lee, S. J.; Lee, M. H.
- Abstract
The article reports that in recent years, a new technique has been developed in powder synthesis processing, the use of a polyvinyl alcohol (PVA) as a polymeric carrier in a mixed metal cation solution. Unlike the Pechini-resin process, the PVA process involves primarily steric entrapment of cations into the polymer network. The PVA ensures the homogeneous distribution of the metal ions in its polymeric network structure and inhibits their segregation and/or precipitation from the solution. Water is able to diffuse through the polymer and stretch it because of the acetate clusters. In the solution, the long chain polymer prevents contact between cations and limits their agglomeration and precipitation. The PVA process also produces carbonaceous material that gives heat through its combustion, so that fine and single-phase powders can be formed at a relatively low external temperature.
- Subjects
POLYVINYL alcohol; POLYMERS; POLYMERIZATION; ANORTHOSITE; VINYL polymers; CRYSTALS
- Publication
Journal of Materials Science Letters, 2003, Vol 22, Issue 18, p1291
- ISSN
0261-8028
- Publication type
Article
- DOI
10.1023/A:1025474606817