The Role of Modified Polycaprolactone in TPS/PCL Blends
With the development of packaging industry,packaging wastes have been kept on increasing.Much effort has recently been made to develop biodegradable materials.Starch has been considered for many years as a polymer having a high potential for packaging applications because of its low cost,renewability and biodegradability.Native starch,when plasticized with glycerol and water,can be processed by conventional extrusion techniques,and is referred as thermoplastic starch(TPS)composite.In this paper,TPS and polycaprolactone(PCL)were prepared by adding a proper compatibilizer constituted of low molecular weight modified PCL(MPCL,the terminal groups modified by using pyromellitic anhydride).Water resistance and morphological analyses were performed in order to show the better performances of these blends compared to those without the use of the compatibilizer.The results showed that the addition of MPCL increased the tensile strength of the material greatly,while the elongation at break of the system decreased a little,and the water-resistance of the system was improved.SEM analysis showed that the system had a better degree of miscibility.It was found that the addition of MPCL did not influence the biodegradability of the blends.
thermoplastic starch polycaprolactone blend
JI LINGFANG
Tianjin University of Science & Technology,Tianjin,300457,China
国际会议
第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)
天津
英文
267-270
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）