Abstrak 
Optical Transparency and Mechanical Properties of SemiRefined Iota Carrageenan Film Reinforced with SiO2 as Food Packaging Material
Afifah Iswara Aji, Danar Praseptiangga, Emma Rochima, I Made Joni, Camellia Panatarani
Universitas Padjadjaran, The 1st International Conference and Exhibition on Powder Technology Indonesia (ICePTi) 2017, AIP Conf. Proc. 1927, 030039-1–030039-6; https://doi.org/10.1063/1.5021232, Published by AIP Publishing. 978-0-7354-1619-2/$30.00
Bahasa Inggris
Universitas Padjadjaran, The 1st International Conference and Exhibition on Powder Technology Indonesia (ICePTi) 2017, AIP Conf. Proc. 1927, 030039-1–030039-6; https://doi.org/10.1063/1.5021232, Published by AIP Publishing. 978-0-7354-1619-2/$30.00
carrageenan
Food packaging is important for protecting food from environmental influences such as heat, light, water vapor, oxygen, dirt, dust particles, gas emissions and so on, which leads to decrease the quality of food. The most widely used type of packaging in the food industry is plastic which is made from synthetic polymers and takes hundreds of years to biodegrade. Recently, food packaging with high bio-degradability is being developed using biopolymer combined with nanoparticles as reinforcing agent (filler) to improve its properties. In this study, semi-refined iota carrageenan films were prepared by incorporating SiO2 nanoparticles as filler at different concentrations (0%, 0.5%, 1.0% and 1.5% w/w carrageenan) using solution casting method. The optical transparency and mechanical properties (tensile strength and elongation at break) of the films were analyzed. The results showed that incorporation of SiO2 nanoparticles to carrageenan matrix on optical transparency of the films. For the mechanical properties, the highest tensile strength was found for incorporation of 0.5% SiO2, while the elongation at break of the films improved with increasing SiO2 concentration.