Testing of processing and performance properties of marine degradable material / Ispitivanje preradbenih i uporabnih svojstava vodorazgradljivog materijala

In today’s world environmental protection plays an important role. This also includes the rivers, lakes, seas and oceans. The general problem in the seas and oceans, among other things, are the discarded plastic products. Such fl oating plastic products act as absorbers of heavy metals, pesticides, polychlorinated biphenyls (PCBs) and other toxins that then get accumulated in sea animals, and consequently in humans as well. The most common sources of pollution are the ships (35 to 85%), i.e. people who throw various products into the sea, lost fi shermen’s nets and waste from rivers or brought by the wind. The need to reduce the quantities of discarded non-degradable plastics in sea, has led to the development of marine degradable materials that after having been discarded into water (sea, lake and river) degrade completely after a certain time. The paper analyzes the possibility of processing the marine degradable material using the injection moulding process, and also the testing of mechanical properties has been performed. Its degradability in the sea has been tested as well as the applicability of the material for manufacturing of products that come into close contact with food. / U dana njem svijetu za tita okoli a vrlo je va na, a u to se ubraja i o uvanje rijeka, jezera, mora i oceana. U morima i oceanima op i su problem, izme u ostalog, i odba eni plasti ni proizvodi. Takvi plutaju i plasti ni proizvodi djeluju kao apsorbansi te kih metala, pesticida, polikloriranih bifenila (PCB) i ostalih otrova, koji se akumuliraju u morskim ivotinjama, a posljedi no i u ljudima. Naj e i izvori one i enja su brodovi (35 % do 85 %), tj. ljudi koji bacaju razne proizvode u more, zatim izgubljene ribarske mre e, otpad iz rijeka ili donesen vjetrom. Potreba za smanjenjem koli ine odba ene nerazgradljive plastike u morima dovela je do razvoja vodorazgradljivog materijala, koji se nakon odbacivanja proizvoda u vodu (mora, jezera, rijeke) nakon nekog vremena potpuno razgradi. U radu je ispitana mogu nost prerade vodorazgradljivog materijala injekcijskim pre anjem te su provedena ispitivanja mehani kih svojstava. Osim toga ispitana je njegova razgradljivost u moru i prikladnost materijala za pravljenje proizvoda koji dolaze u neposredan dodir s hranom.