Biodecomposed Polymeric Compositions on the Basis of Agriculture’s Waste - Progress in Organic and Physical Chemistry: Structures and Mechanisms - page 143

TABLE 2 Changes in physico-mechanical properties after composting.

Filler's name*

Changes in physico-mechanical properties

Change of breakdown voltage, ǻı ɪ ,
%

Change of percent elongation
with rupture, ǻİ ɪ , %

Beet bin pulp 60 ± 5% 68 ± 0,1%

Rice shuck 65 ± 5% 72 ± 0,1%

Cacao bean husk 65 ± 5% 73 ± 0,1%

* - The amount of filler in polymer compositions is 30%.

It is obvious after composting breakdown voltage for all compositions has de-
creased on the average in 2 or 5 times and percent elongation with rupture has lowered
in three times. That testi¿ es about processing of polymer compositions biodegradation
with agroindustrial complex waste. The visual estimation has allowed establishing
¿ ller's destruction on all surfaces of samples which had friable structure after com-
posting. They were fragile and some samples can be broken into small fractions in case
of withdrawal from biohumus.
Thereby, received polymeric compositions on the basis of agroindustrial complex
waste are partially biodecomposed polymeric compositions. Agroindustrial complex
waste, namely cacao bean husk, rice shuck, and beet bin pulp assimilates in the envi-
ronment and the polymeric matrix is destroyed. Polymer's decomposition is reduced
by that.
Besides, imposition of colloidal clay in polymeric compositions has multiplied
physico-mechanical properties of material. Using mathematical modeling underneath
breakdown voltage and term of biodecomposition on amount of ¿ ller, it has been es-
tablished that ¿ ller's concentration (agroindustrial complex waste) in polymeric com-
position can be increased up to 40%.
It was necessary to eliminate presence of an unpleasant smell for making products
from biodecomposed polymeric compositions on the basis of agroindustrial complex
and polyethylene waste.
Charcoal was used as a sorbent. Samples of following structure have been received
on extrusion type equipment: 58% of polyethylene, 40% of ¿ ller (cacao bean husk,
rice shuck, or beet bin pulp), and 2% of sorbent and 59% of polyethylene, 40% of
¿ ller, and 1% of sorbent. As introduction of 1% charcoal reduced a smell, but did not
eliminate it completely, compositions with containing 2% of coal which did not have
any smell at all.
Then tests of received compositions for durability were conducted at monoaxial
stretching (Table 3).