Effect of EMA and antioxidants on properties of thermoplastic starch blown films

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Threepopnatkul, P.^1 ; Kulsetthanchalee, C.^2 ; Sittattrakul, A.^1 ; Kaewjinda, E.^1

Department of Materials Science and Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom

73000, Thailand^1

Event and Exhibition Design, Suan Dusit Rajabhat University, Bangkok

10300, Thailand^2

关键词: Butylated hydroxytoluene;    Methyl acrylates;    Moisture sorption;    Morphological properties;    Scanning electrons;    Thermoplastic starch;    Water sorption;    Water vapor permeability;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012061/pdf
DOI  :  10.1088/1757-899X/87/1/012061

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The objectives of this study were to investigate the effect of poly(ethylene-co-methyl acrylate) (EMA) at 10, 30 and 50 wt% on the morphological properties, moisture sorption, water vapor permeability and biodegradability of thermoplastic starch (TPS). Urea and formamide were used as a mixed plasticizer. In addition, the effect of antioxidants namely, 3,5-di-tert-butyl-4-hydroxyhydrocinnamate (DTBH), butylated hydroxytoluene (BHT) and bis(octadecyl)hydroxylamine (BOH) at 1 wt% on the properties of TPS/EMA film was investigated. TPS/EMA films were produced by a blown film molding machine and characterized by scanning electron microscropy, moisture sorption, water vapor permeability and biodegradability measurement. Results found that the increment of EMA content in the TPS matrix could improve the water sorption, water vapor permeability and biodegradability properties of TPS/EMA films. For biodegradation, the weight loss of the blended films was directly proportional to TPS content. Regarding the antioxidants effect, the water vapor permeability of TPS/EMA films containing DTBH was higher than the one with BOH and BHT. However, the antioxidants contributed little to the biodegradability of TPS/EMA films and had no effect on the moisture sorption of TPS/EMA films.