en گروه سرامیک Ceramic Materials and Engineering Research Paper Research Paper <span style="font-size:10pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%"><span style="color:black">Despite being an effective material for food packaging, chitosan (CS) exhibited poor ductility when processed into film, which restricted its use in this industry. In this study, composite films with enhanced properties were developed by incorporating polyvinyl alcohol (PVA) into CS through a simple solution casting method. The effects of different PVA/CS weight ratios (70:30, 50:50, and 30:70 w/w) on the morphology, mechanical properties, antibacterial activity, and soil degradation of the composite films were analyzed. Compared to the pristine PVA film, increasing the CS content in the PVA/CS composite film enhanced thickness, stiffness, roughness, antibacterial efficiency, and degradation rate, while reducing tensile strength and elongation at break. Fourier transform infrared (FTIR) spectroscopy revealed the highest intermolecular interactions in the PVA/CS composite film with 70:30 w/w. Antibacterial activity tests and soil burial analysis demonstrated that the PVA:70/CS:30 composite exhibited significantly higher antibacterial activity toward <i>Escherichia coli</i> and <i>Bacillus subtilis</i> bacteria as opposed to PVA film, along with a moderate degradation rate of 76.76% following 30 days soil burial, effectively balancing biodegradability and material integrity. These findings suggest that the PVA:70/CS:30 composite is a promising alternative for sustainable and functional biodegradable packaging solutions.</span></span></span></span></span></span> Chitosan,Polyvinyl alcohol,Composite film,Antibacterial,Packaging 92 103 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-5594-1&slc_lang=en&sid=1 Nur Aziah Suhada Naim aziahsyuhada@gmail.com 1800319475328460020443 1800319475328460020443 No Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, Kompleks Pusat Pengajian Jejawi 3, 02600, Arau, Perlis, Malaysia Muhammad Faiq Abdullah faiq@unimap.edu.my 1800319475328460020444 1800319475328460020444 Yes Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, Kompleks Pusat Pengajian Jejawi 3, 02600 Arau, Perlis, Malaysia Sung Ting Sam stsam@unimap.edu.my 1800319475328460020445 1800319475328460020445 No Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, Kompleks Pusat Pengajian Jejawi 3, 02600, Arau, Perlis, Malaysia Wan Ahmad Radi Wan Ahmad Yaakub ahmadradi@unimap.edu.my 1800319475328460020446 1800319475328460020446 No Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, Kompleks Pusat Pengajian Jejawi 3, 02600, Arau, Perlis, Malaysia