淀粉基可环境降解塑料研究Ⅲ——现场环境降解研究

Study of Starch- base Degradable PlasticsⅢ——Degraded Test In The Environment

对所设计的可环境降解塑料进行了大量的现场环境降解实验 ,包括大气直接曝露老化试验和埋土降解试验 ,获得了许多有意义的结果 .结果表明 ,各填充组分与 PE组成的复合材料 ,经大气直接曝露老化后再埋土将使降解性能得到显著的体现 ,经对各填充组分的合理设计 ,可望获得时控光 /生物降解塑料 .

A mass of degraded tests of the degradable plastics designed in these papers in the real environment including aging test in atmosphere and degraded test in soil were carried through, which provided a large number of first hand data, and some good degradation efficiency were observed from them. The tests indicated that the composite materials composed with various additives and PE plastics designed in this paper possessed better degradable performance when they were embedded into soil after being exposed in atmosphere than embedded into soil directly. It was achieved to control photo and biodegradable plastics through devising each filled component reasonably.