Swelling and tensile properties of starch glycerol system with various crosslinking agents

Innovation in Polymer Science and Technology 2016

材料科学;化学

Mohamed, R.^1 ; Mohd, N.^1 ; Nurazzi, N.^1 ; Siti Aisyah, M.I.^1 ; Mohd Fauzi, F.^1

GREEN Polymer Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), Selangor, Shah Alam

40450, Malaysia^1

关键词: Casting method;    Cross linking agents;    Crosslinking system;    Film formations;    Film properties;    Hydroxyl groups;    Malonic acid;    Modification process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/223/1/012059/pdf
DOI  :  10.1088/1757-899X/223/1/012059

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Brittle properties of starch had been overcome by the modification process. In this work, sago starch is being modified with variable amount of plasticiser, namely glycerol at 20 and 40% and crosslinking agent had been added to the system. The film of the modification and characterizations of the starch glycerol system with various crosslinking systems were produced by casting method. The film properties of the starch glycerol system were then characterized by tensile strength (mechanical properties) and swelling (physical properties). The modification of the starch glycerol had improved that system by increasing the tensile strength, modulus however lowering its elongation. The increasing in percentage of the water absorption and also swelling are due to the intrinsic hydroxyl groups presence from the starch and glycerol itself that can attract more water to the system. Upon crosslinking, films casted with chemicals namely, glyoxal, malonic acid, borax, PEG were characterised. It was found that, all the film of sago starch crosslinked and undergoing easy film formation. From this modification, borax and malonic acid crosslinking agent had been determined as the best crosslinking agent to the starch glycerol system.