Iikomityi zephepha ezigqunywe nge-PE kunye ne-PLA zizinto ezimbini eziqhelekileyo zekomityi zephepha ezikhoyo ngoku kwimarike. Zinomahluko omkhulu ngokubhekiselele kukhuseleko lokusingqongileyo, ukuphinda zisetyenziswe kunye nokuzinza. Eli nqaku liza kwahlulwa libe yimihlathi emithandathu ukuze kuxoxwe ngeempawu kunye nomahluko wezi ntlobo zimbini zeekomityi zephepha ukubonisa impembelelo yazo ekuzinzeni kokusingqongileyo.
Iikomityi zephepha ezigqunywe yi-PE (polyethylene) kunye ne-PLA (polylactic acid) zizinto ezimbini eziqhelekileyo zekomityi zephepha. Iikomityi zephepha ezigqunywe yi-PE zenziwe ngeplastiki yendabuko ye-PE, ngelixa iikomityi zephepha ezigqunywe yi-PLA zenziwe ngezinto zezityalo ezivuselelekayo ze-PLA. Eli nqaku lijolise ekuthelekiseni umahluko kukhuseleko lokusingqongileyo, ukuphinda kusetyenziswe kunye nokuzinza phakathi kwezi ntlobo zimbini zeiikomityi zephephaukunceda abantu benze ukhetho olungcono malunga nokusebenzisa iikomityi zephepha.
1. Ukuthelekiswa kokhuseleko lokusingqongileyo. Ngokuphathelele ukhuseleko lokusingqongileyo, iikomityi zephepha ezigqunywe yi-PLA zingcono nangakumbi. I-PLA, njenge-bioplastic, yenziwe ngezinto eziluhlaza zezityalo. Ngokuthelekisa, iikomityi zephepha ezigqunywe yi-PE zifuna izixhobo zepetroliyam njengezinto eziluhlaza, nto leyo enempembelelo enkulu kokusingqongileyo. Ukusebenzisa iikomityi zephepha ezigqunywe yi-PLA kunceda ekunciphiseni ukuxhomekeka kumandla e-fossil kunye nokukhusela okusingqongileyo.
Uthelekiso ngokwemigaqo yokusetyenziswa kwakhona. Ngokwemigaqo yokusetyenziswa kwakhona,Iikomityi zephepha ezigqunywe yiPLAZikwangcono kuneekomityi zephepha ezigqunywe yiPE. Ekubeni iPLA iyinto ebolayo, iikomityi zephepha zePLA zinokuphinda zisetyenziswe kwaye ziphinde zenziwe iikomityi zephepha zePLA ezintsha okanye ezinye iimveliso ze-bioplastic. Iikomityi zephepha ezigqunywe yiPE kufuneka zidlule kwiinkqubo zobuchwephesha zokuhlela nokucoca ngaphambi kokuba zisetyenziswe kwakhona. Ke ngoko, iikomityi zephepha ezigqunywe yiPLA kulula ukuziphinda zisetyenziswe kwaye zisetyenziswe kwakhona, ngokuhambelana nengcamango yoqoqosho olujikelezayo.
3. Uthelekiso ngokwemigaqo yozinzo. Xa kufikwa ekuzinzeni, iikomityi zephepha ezigqunywe yiPLA ziphinda zibe phezulu. Inkqubo yokuvelisa yePLA isebenzisa izixhobo ezivuselelekayo, ezifana necornstarch kunye nezinye izinto zezityalo, ngoko ke ayinampembelelo ingako kwindalo esingqongileyo. Ukuveliswa kwePE kuxhomekeke kwizixhobo zepetroliyam ezinqongopheleyo, nto leyo ebeka uxinzelelo olukhulu kwindalo esingqongileyo. Ukongeza, iikomityi zephepha ezigqunywe yiPLA zinokonakala zibe ngamanzi kunye nekhabhoni diokside, nto leyo ebangela ungcoliseko oluncinci kumhlaba nasemanzini, kwaye zizinzileyo ngakumbi.
Izinto ekufuneka ziqwalaselwe malunga nokusetyenziswa kwangempela. Ngokwembono yokusetyenziswa kwangempela, kukwakho umahluko phakathi kweekomityi zephepha ezigqunywe nge-PE kunye neekomityi zephepha ezigqunywe nge-PLA.iikomityi zephepha ezigqunywe yi-PEZinokumelana kakuhle nobushushu nokubanda kwaye zifanelekile ukupakisha iziselo ezishushu nezibandayo. Nangona kunjalo, izinto ze-PLA zinobuthathaka ngakumbi kubushushu kwaye azifanelekanga ukugcina ulwelo olushushu kakhulu, nto leyo enokubangela ukuba indebe ithambe kwaye ijike. Ke ngoko, kufuneka kuqwalaselwe iimfuno ezithile zokusetyenziswa xa kukhethwa iikomityi zephepha.
Ukushwankathela, kukho umahluko ocacileyo phakathi kweekomityi zephepha ezigqunywe yi-PE kunye neekomityi zephepha ezigqunywe yi-PLA ngokubhekiselele kukhuseleko lokusingqongileyo, ukuphinda zisetyenziswe kunye nokuzinza. Iikomityi zephepha ezigqunywe yi-PLA zinokhuselo olungcono lokusingqongileyo,ukuphindeka kwakhona kunye nokuzinza, kwaye okwangoku lukhetho olucetyiswayo kakhulu olunobuhlobo nokusingqongileyo. Nangona ukumelana nobushushu beekomityi zephepha ezigqunywe yi-PLA kungalunganga njengokweekomityi zephepha ezigqunywe yi-PE, iingenelo zazo zingaphezulu kakhulu kuneengxaki. Sifanele sikhuthaze abantu ukuba basebenzise iikomityi zephepha ezigqunywe yi-PLA ukukhuthaza uphuhliso oluzinzileyo. Xa ukhetha iikomityi zephepha, kufuneka kuqwalaselwe ngokubanzi ngokusekelwe kwiimfuno ezithile, kunye nokusetyenziswaiikomityi zephepha ezinobuhlobo nokusingqongileyo nezizinzileyokufuneka ixhaswe ngokukhutheleyo. Ngokusebenzisana, singenza ukuba ukusetyenziswa kwekomityi yephepha kube nobuhlobo nokusingqongileyo, kuphinde kusetyenziswe kwaye kuqhubeke ixesha elide.
Ixesha lokuthumela: Sep-13-2023
