PVA

From RepRap
Revision as of 15:41, 26 June 2013 by Jrhouston (talk | contribs)
Jump to: navigation, search


Polyvinyl alcohol

[1]

Possible Support material, can (maybe) extruded with the standard extruder.

Polyvinyl alcohol (PVOH, PVA, or PVAL) is a water-soluble synthetic polymer hydrolysed from polyvinyl acetate.

PVA is fully degradable and is a quick dissolver. PVA has a glass transition temperature of around 85°C (185F), but this temperature depends on the polymer's degree of hydrolysation (ratio of alcohol groups to acetate groups). It decomposes rapidly above 200°C as it can undergo pyrolysis at high temperatures.