How much percent reduction will there be with oxo-biodegradables after 4 years?
A. If it is a controlled study, then dates of disposal and times to retrieve products would be part of the protocol. If samples are randomly dug, then such information has to be provided by the landfill authority. Many studies have been conducted to demonstrate the degradation of TDPA modified plastics in landfills in UK, Canada, China and USA. In a particular study by MJ Carter in UK, it was shown that PE manufactured with TDPA will mechanically and chemically break down over a period of several months in an operating landfill. The PE film was buried down to 3 meters deep and the TDPA-PE was found to have totally degraded in 10 months including the winter period. Weight average molecular weight was performed by an independent testing laboratory (RAPRA) and was shown to reduce drastically from 115,000 to 4,250. This indicates scientifically that the PE has totally degraded to significantly much smaller molecules which are susceptible to biodegradation. Unless otherwise specified, we de
