Laboratory of Advanced Materials and Nanotechnology, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
Carbohydr Polym. 2013 Feb 15;92(2):1711-6. doi: 10.1016/j.carbpol.2012.11.031. Epub 2012 Nov 19.
In recent years, increasing environmental concerns focused greater attention on the development of biodegradable materials. A thermoplastic starch derived from bioresources, sugar palm tree was successfully developed in the presence of biodegradable glycerol as a plasticizer. Sugar palm starch (SPS) was added with 15-40 w/w% of glycerol to prepare workable bioplastics and coded as SPS/G15, SPS/G20, SPS/G30 and SPS/G40. The samples were characterized for thermal properties, mechanical properties and moisture absorption on exposure to humidity were evaluated. Morphological studies through scanning electron microscopy (SEM) were used to explain the observed mechanical properties. Generally, the addition of glycerol decrease the transition temperature of plasticized SPS. The mechanical properties of plasticized SPS increase with the increasing of glycerol but up to 30 w/w%. Meanwhile, the water absorption of plasticized SPS decrease with increasing of glycerol.
近年来，日益增长的环境问题引起了人们对可生物降解材料发展的高度关注。在可生物降解增塑剂甘油的存在下，成功开发出了一种源自生物资源的热塑性淀粉，糖棕树。将糖棕淀粉（SPS）添加 15-40w/w%的甘油，制备可加工的生物塑料，并分别标记为 SPS/G15、SPS/G20、SPS/G30 和 SPS/G40。对样品的热性能、机械性能以及暴露于湿度时的吸湿性能进行了评估。通过扫描电子显微镜（SEM）进行了形态学研究，以解释所观察到的机械性能。一般来说，甘油的添加会降低增塑 SPS 的转变温度。增塑 SPS 的机械性能随甘油含量的增加而增加，但最高可达 30w/w%。同时，增塑 SPS 的吸水率随甘油含量的增加而降低。
