การปรับปรุงคุณสมบัติของฟิล์ม พอลิไวนิลแอลกอฮอล์ (พี วี เอ)/โซเดียมคาร์บอกซี่ เมทิลเซลลูโลส (โซเดียม-ซี เอ็ม ซี) สำหรับประยุกต์ใช้ในบรรจุภัณฑ์แอคทีฟ Improvement of polyvinyl alcohol (PVA)/sodium carboxymethyl cellulose (Na-CMC) films properties for active

Abstract

To improve the mechanical properties of thin films PVA/Na-CMC in particular its toughness and flexibility to be suitable for use as active packaging. The thin films were improved by mixing with starch (0 -40%wt) and glycerol (0 and 15%wt) and casting from solution in hot water as solvent.  The mechanical and thermal properties and surface morphology of thin films PVA/Na-CMC/starch were investigated.  It was found that addition of starch have to less than 40 %wt and using glycerol as plasticizer increase flexibility property of polymer blend film and miscibility of thin films PVA/Na-CMC/starch which can confirmby thermal analysis, SEM images and tensile testing.  In conclusion, the preparation of thin films PVA/Na-CMC/starch have a optimum property for use as  biodegradable packaging material and food packaging applications.