期刊
JOURNAL OF POLYMERS AND THE ENVIRONMENT
卷 12, 期 1, 页码 7-10出版社
KLUWER ACADEMIC/PLENUM PUBL
DOI: 10.1023/B:JOOE.0000003122.71316.8e
关键词
photo-biodegradable; polyethylene films; starch; environmental degradability; agricultural application
Photo-biodegradable polyethylene (PBD-PE) films containing starch have been developed and used in agriculture. They are better able to raise temperature, preserve moisture, and raise yield than common polyethylene films, and they can be degraded environmentally after finishing these functions. The photo-biodegradation induction periods of four kinds PBD-PE films range from 46 to 64 days, which basically satisfies the needs of agricultural cultivation. All PBD-PE films can be degraded to Stage V, in which almost no film exists on the surface of the ridges 2-3 months or so after the induction periods. The PBD-PE films buried in soil have also good degradability.
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