单用化学聚合物制成的塑料包装材料很难在自然环境中降解。为减轻这类材料对环境的污染,俄罗斯研究者用农林业废料与聚乙烯等化学材料混合,制成了可在土壤中自然降解的聚合物基生物复合包装材料。位于莫斯科的普列汉诺夫经济大学研究人员在新一期荷兰《聚合物和环境杂志》上报告说,他们将葵花籽的外壳、小麦谷糠、木材的锯末制成木质纤维粉颗粒,另用亚麻和小麦茎秆的纤维制成颗粒,并把上述两类颗粒中的 Plastic packaging made of chemical polymers alone is difficult to degrade in the natural environment. To reduce the environmental pollution caused by such materials, Russian researchers used agrochemical wastes mixed with chemical materials such as polyethylene to make polymer-based biocomposite packaging materials that naturally degrade in soils. Researchers at the Plekhanov University of Economics in Moscow reported in a new issue of the Netherlands Journal of Polymer and Environmental Science that they made lignocellulosic powder particles from sunflower seeds, wheat bran, and sawdust from wood. Granules are made from fibers of flax and wheat stalks and put in the above two types of granules