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造成环境污染的人为因素很多,其中塑料包装的生产制造及废弃物的不恰当处理,是重要的因素之一。现在使用的塑料包装,多数系一次性使用。由于塑料稳定性好,废弃在自然界不易为微生物、阳光和水分所分解,日积月累,严重影响生态平衡。此外,在塑料包装材料生产过程中,对环境造成的危害也不容忽视。生物降解塑料的研究,是90年代世界瞩目的七大重大研究课题之一,是解决大量塑料废弃物对环境污染的有效途径,对我国来说,还能有效地利用淀粉资源,提高淀粉产值,对发展农村经济有积极作用。生物降解塑料的废塑料,经微生物作用后可彻底分解,
There are many human factors that cause environmental pollution. Among them, the production and manufacturing of plastic packaging and improper disposal of waste are one of the important factors. The plastic packaging used today is mostly disposable. Due to the good stability of plastics, waste is not easily decomposed by microorganisms, sunlight and moisture in nature, and over time, it seriously affects the ecological balance. In addition, in the production of plastic packaging materials, the harm caused to the environment can not be ignored. Research on biodegradable plastics is one of the seven major research topics of the world in the 90s. It is an effective way to solve large amounts of plastic wastes on environmental pollution. For China, it can also effectively use starch resources to increase the output value of starch. It has a positive effect on the development of the rural economy. The biodegradable plastic waste plastics can be completely decomposed by microorganisms.