What is the Young's modulus, shear modulus and Poisson's ratio of PVA polymer?
The Young's modulus of PVA polymer is 0.6-1.5 GPa, the shear modulus is 0.2-0.6 GPa, and the Poisson's ratio is around 0.3.
Thank you Le for sharing the answer. Can you please provide referred paper for it.
PVA is an atactic material that exhibits crystallinity. In terms of microstructure, it is composed mainly of 1,3-diol linkages [−CH2−CH(OH)−CH2−CH(OH)−], but a few percent of 1,2-diols [−CH2−CH(OH)−CH(OH)−CH2−] occur, depending on the conditions for the polymerization of the vinyl ester precursor.Polyvinyl alcohol has excellent film-forming, emulsifyingand adhesiveproperties. It is also resistant to oil, grease and solvents. It has high tensile strength and flexibility, as well as high oxygen and aroma barrier properties. However, these properties are dependent on humidity: water absorbed at higher humidity levels acts as a plasticiser, which reduces the polymer's tensile strength, but increases its elongation and tear strength
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