Abstract
Regenerated cellulose and chitosan were deposited by self-assembly onto the surface of cellulose base paper to prepare an oil-resistant food packaging paper (ORFPP). The ORFPP exhibited favorable barrier properties to oil and water, and also had good mechanical properties and thermal stability. The cellulose base paper was coated with a 3 wt% solution of regenerated cellulose and then impregnated with a solution of chitosan. Optimum conditions were found to be a 3 min impregnation time, with two impregnations, in a 1 wt% impregnation solution (paper termed ORFPP (3−2-1)). The coated weight of the ORFPP (3−2−1) was 11.76 g/m2 and the oil resistance grade (Kit rating) was 11.6. The tensile index of the ORFPP (3−2−1) increased by 135.14 % and its performance as a barrier to water vapor increased by 78.54 %, compared with the base paper. This study paves the way for the preparation of new environmentally friendly food packaging materials.
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