Barrier and film properties of plastisol coatings, a water free coating application based on mixtures of starch, poly(vinyl alcohol) and poly(alkyl methacrylate)
Jansson, A; Jarnstrom, L
| HERO ID | 4420947 |
|---|---|
| In Press | No |
| Year | 2006 |
| Title | Barrier and film properties of plastisol coatings, a water free coating application based on mixtures of starch, poly(vinyl alcohol) and poly(alkyl methacrylate) |
| Authors | Jansson, A; Jarnstrom, L |
| Journal | Nordic Pulp & Paper Research Journal |
| Volume | 21 |
| Issue | 5 |
| Page Numbers | 690-696 |
| Abstract | Plastisol coatings based on starch and poly(vinyl alcohol) were investigated. Dry powders based on two different ratios of these two water-soluble polymers were prepared by spray drying aqueous polymer solutions. An oxidized and hydroxypropylated potato starch and a poly(vinyl alcohol) grade with a degree of hydrolysis of 72.5% were used. Poly(alkyl methacrylate) was used in order to improve the water vapour barrier of the coated materials. Starch-containing plastisol pastes were produced by two different rout'es: (1) by adding a liquid plasticizer (glycerol or poly(ethylene glycol)) to the starch/poly(vinyl alcohol)-based powder and (2) by mixing the dry starch/poly(vinyl alcohol)-based powder with the dry poly(alkyl methacrylate) powder and subsequently adding a mixture of liquid plasticizers (glycerol and dipropylene glycol benzoate) to the powder mixture. Free plastisol films and coated papers were produced. Two different base-papers were investigated; greaseproof paper and paperboard. It was possible to produce pure starch/poly(vinyl alchohol) plastisol coatings as well as plastisol coatings based on a mixture of incompatible polymers. Stratified structures created by a double layer coating operation were also investigated. In the case of the double coatings, the first plastisol layer was a pure starch/poly(vinyl alcohol) plastisol according to route 1 and the second layer was a pure poly(alkyl methacrylate) plastisol. The plastisol coatings resulted in improvements in the water vapour and oxygen barrier properties. |
| Doi | 10.3183/npprj-2006-21-05-p690-696 |
| Wosid | WOS:000243757900020 |
| Url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-33846272792&doi=10.3183%2fnpprj-2006-21-05-p690-696&partnerID=40&md5=61ea1c1bdff31bca60ba8e108da8b296 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | coating; plastisols; starch; polyvinyl alcohol; water vapour transmission rate; viscosity; glycerol; poly ethylenglycol; oxygen transmission rate |