Ziziphi iingxowa zeplastiki ezinokubola?
Iingxowa zeplastiki eziguquguqukayo ze-biodegradable zilungele ukusingqongileyo ezonakaliswa emanzini kunye ne-carbon dioxide ngokusebenzisa isenzo se-microbial kwiimeko zokuvundisa, ngaphandle kokubangela ubutyhefu bomhlaba okanye ungcoliseko lwesibini. Izinto eziqhelekileyo ezisetyenziswa kwimveliso ziquka:
I-PBAT (i-polybutylene adipate / terephthalate), i-PLA (i-polylactic acid), i-PCL (i-polycaprolactone), i-PHA (i-polyhydroxyalkanoate), kunye nezinye iipolymers ze-biodegradable.
Kuphantsi kwaziphi iimeko apho iingxowa ezibolayo zebhayoloji zithomalalisa? Ziziphi iimeko zokuthotywa kwesidima?
Ukuthotywa phantsi kweemeko zomgquba
Iimeko zomgquba: Isiqulatho sokufuma ngaphezu kwe-95%, umhlaba, ubushushu (28-58 degree), kunye ne-microorganisms ezithile.
Zintoni iingxowa zeplastiki ezonakeleyo phakathi-?
Izinto eziphathekayo ezihlayo kuphela zibe ngamaqhekeza amancinci kwaye azikwazi ukuguqulwa zibe ngamanzi kunye ne-carbon dioxide ngaphakathi kwexesha elichaziweyo. Izinto ezinokufotwa (ezifana ne-d2W kunye ne-P-Ubomi) zongeza i-1-2% ye-agent ye-photooxidative kwizinto eziqhelekileyo ze-PE. Kukho nezinto ezixubileyo ze-PE kunye nesitashi, apho inxalenye yesitashi inokuthotywa, kodwa inxalenye ye-PE eseleyo ayinakuthotywa.
Uthini umlinganiselo weengxowa zeplastiki ezinokubola?
Ngokutsho kwe-EU kunye nemigangatho yelizwe, ngaphezu kwe-90% yamacandelo e-resin kufuneka ahlanjululwe emanzini kunye ne-carbon dioxide.
Uthini umahluko phakathi kweengxowa ze-biodegradable kunye neeplastiki eziqhelekileyo? Indlela yokuchonga?
Ukongeza kwi-compost, ezi ndlela zilandelayo zokuchonga ngokukhawuleza ziyafumaneka:
I-spectroscopy ye-infrared (ukuthelekisa izakhiwo ze-molecular) ukuchonga ngokukhawuleza ukubunjwa kweengxowa zeplastiki
I-Chemical pyrolysis (izinto eziguquguqukayo ezinokubola zinokubola ngokukhawuleza phantsi kweemeko ezishushu ze-alkaline, ngelixa iingxowa zeplastiki eziqhelekileyo aziyi)
Buthini ubomi beshelufu yeengxowa ezinokubola?
Iinyanga ezili-12 zikwimeko etywiniweyo (ikhuselwe kumswakama, umhlaba, ukukhanya, njl.)
Yintoni i-PLA kwaye yintoni i-PBAT?
I-PLA yipolymer eyenziwe ngokuguqula istatshi sibe yi-lactic acid monomers ngokuvundiswa, ethi ke ngoko khemikhali yenziwe ipolymerized ibe yi-polylactic acid.
I-PBAT i-polymer eyenziwe nge-chemically polymerizing adipic acid, i-terephthalic acid, kunye ne-butanediol.
Zombini ezi zixhobo zinokubola zibe ngamanzi kunye nekharbon diokside kwiimeko zokuvundisa.
Kutheni ukongeza i-PBAT?
I-PBAT inokuguquguquka okugqwesileyo, ukuqhubekeka, kunye nokuchasana namaqondo obushushu aphezulu naphantsi, anokufikelela kwiimfuno zezicelo zefilimu. Ukongeza, i-PBAT ifumaneka ngokubanzi, kulula ukuyivelisa-ubuninzi, kunye nexabiso eliphantsi{2}}, iyenza ibe yimveliso egqwesileyo yokutshintsha imathiriyeli yepololefin.
