eng Oriental Scientific Publishing Company Material Science Research India 0973-3469 2019-04-25 16 1 70 75 14702 article Tensile, Thermal, And Moisture Absorption Properties of Polyvinyl Alcohol (PVA) / Bengkuang (Pachyrhizuserosus) Starch Blend Films Mochamad Asrofi 1 Dedi Dwilaksana 1 Hairul Abral 2 Rahmat Fajrul 3 Laboratory of Material Testing, Department of Mechanical Engineering, University of Jember, Kampus Tegalboto, Jember 68121, East Java, Indonesia Department of Mechanical Engineering, Andalas University, 25163, Padang, Sumatera Barat, Indonesia Department of Mechanical Engineering, Bengkalis State Polytechnic, 28711, Bengkalis, Riau, Indonesia

This paper described the tensile, thermal, and moisture absorption characteristic of polyvinyl alcohol (PVA) / bengkuang (Pachyrhizuserosus) starch blend films. The film was produced through the solution casting method. Tensile, thermogravimetric analysis and moisture test were studied to determine the tensile strength, thermal stability, and moisture absorption, respectively. The highest tensile strength (TS) was 15.86 ± 0.69 MPa for pure PVA film. This result was higher than bengkuang starch and its blends film. Tensile elongation (TE) decreased as increased bengkuang starch content in PVA. The thermal degradation of PVA film was higher 10°C than bengkuang starch films in range temperature 200-380°C. The addition of bengkuang starch in PVA also increased moisture absorption. The highest moisture absorption was in the bengkuang starch film. This blend film’s tensile, thermal, and moisture properties probably suggested it could be suitable for food packaging.

 https://www.materialsciencejournal.org/vol16no1/tensile-thermal-and-moisture-absorption-properties-of-polyvinyl-alcohol-pva-bengkuang-pachyrhizuserosus-starch-blend-films/ Bengkuang Starch Moisture Absorption Polyvinyl Alcohol Tensile Strength Thermal Stability