摘要
Developing degradable films is an important means for resolving the problem of film pollution; however, in recent years, there have been only few studies related to the thermal analysis of degradable plastic films. This research detailed the composition and pyrolysis of one kind of ordinary and three kinds of degradable plastic films using the differential thermal analysis （DTA） technique. The results showed that degradable films and ordinary film had similar DTA curves, which reflected their similar compositions; however, small differences were measured, which were due to the added constituents of the degradable films. The pyrolysis reaction orders of each film were about 0.93. The pyrolysis activation energies and pre-exponential factors followed the order of ordinary film 〉 photodegradable film 〉 photodegradable calcium carbonate film 〉 biodegradable film. The results of this research laid the foundation for new theories for harnessing soil pollution caused by plastic films.
开发可能减解的电影是为解决电影污染的问题的一个重要工具；在最近的年里，然而，仅仅与可能减解的塑料薄膜的热分析有关有很少研究。这研究详细说明了作文和热分解一个种有点用示差热分析(DTA ) 技术的三种可能减解的塑料薄膜。结果证明可能减解的电影和平常的电影有类似的 DTA 曲线，它反映了他们的类似的作文；然而，小差别被测量，它由于可能减解的电影的增加的成分。每部电影的热分解反应订单是大约 0.93。热分解激活精力和 pre 指数的因素跟随了平常的电影 > 相片的顺序可能减解的电影 > 相片可能减解的碳酸钙电影 > 可被细菌破坏的电影。这研究的结果为利用塑料薄膜引起的土壤污染为新理论打了基础。
基金
Project supported by the Major State Basic Research Development Program of China (973 Program)(No.2005-CB121102)
State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau of China (No.10501-138)
