BIOCOMPOSITES BASED ON RENEWABLE RESOURCE: ACETYLATED AND NON ACETYLATED CELLULOSE CARDBOARDCOATED WITH PHB

CYRAS, VIVIANA P.; COMMISSO, MA. SOLEDAD; VAZQUEZ, ANALÍA

POLYMER

ELSEVIER SCI LTD

Año: 2009 vol. 50 p. 6274 - 6280

0032-3861

Renewable resource based bylayer films were prepared from polyhydroxybutyrate film (PHB) and cellulose cardboard via compression moulding, containing 5, 10, 15 and 20 wt% of PHB. The effects of PHB contents on moisture absorption, water absorption and water vapor permeation of films were investigated. All biocompiostes showed improved permeation properties. As of 15% of PHB, water permeation, equilibrium moisture content and polarity showed a marked drop. It is therefore assumed that the hydrophobic PHB covered up the cellulose cardboard and formed a continuous layer.  The water–polymer interactions in materials are critical to the prediction of their behavior in applications where they are exposed to water or humid environment.