PVA膜在土壤中之热降解研究

摘要

高分子材料时常被用在提高农业生产力,最近亦有许多研究将其应用在喷植植生工程的土壤改良上,使土壤团粒化及进而降低土壤侵蚀,在草种未发芽时达到水土保持的功效.聚乙烯醇(PVA)是广泛使用的高分子土壤改良剂之一,本研究使用扫描式电子显微镜(SEM)、红外线光谱仪(FT-IR)来分析土壤中PVA薄膜的受热降解的变化,研究结果显示PVA受热会产生降解,未来可视环境的差异选用不同的植生草种.%Polymers have been used as soil conditioners to enhance the productivity of agriculture for a long time. They were also used in water and soil conservation engineering for protection against erosion of soil recently. Polymer soil conditioners can stabilize the ag-gregates of soils, increase the infiltration and reduce the runoff and erosion of soil. Polyvinyl alcohol (PVA) is one of the most impor-tant polymers that have been used for preventing from erosion of soil in the hillside. With its biodegradable property, PVA was widely