ngā purongo

I te whanaketanga o te wā, kei te aro nui haere te tangata ki te tiaki i te taiao, ā, kua noho te whanaketanga matomato ā-umanga hei ia o ngā mahi matua. Nō reira, he mea nui ngā rauemi pirau-koiora. Nā, he aha ngā rauemi hanga-koiora?

Ko ngā rauemi koiora e pā ana ki ngā rauemi koiora hou i hangaia mā te photosynthesis hei rauemi mata, ka hurihia hei hua koiora mā te hangarau fermentation koiora, kātahi ka purea, ka whakapūmautia hei rauemi koiora polymer e pai ana ki te taiao. Ka taea e ngā rauemi pirau-koiora te pirau ki te CO2 me te H20 i raro i ngā tikanga mahi moroiti, whakapūmau rānei. Ki te whakatauritea ki ngā rauemi hinu, ka taea e ngā rauemi koiora te whakaiti i ngā tukunga waro tae atu ki te 67%.

Ngā tukunga waro noa i te tukanga whakaputa katoa o ētahi pūmua (kg CO2/kg hua):

I roto i te oranga o ia rā, kāore e taea te noho me te kore he kirihou, engari e mōhio ana tātou katoa ehara te kirihou i te mea pai mō te taiao, ā, koia te hua matua o te "para mā". Heoi, he maha ngā hua kirihou e kitea ana i roto i ō tātou oranga o ia rā. Nā reira, kua piki haere te rongonui o ngā kirihou pirau hei momo hou.

Hei whakatutuki i tēnei, kua whakawhanakehia e ngā kaipūtaiao tētahi hua pirau-koiora –waikawa polylacticHe kirihou tēnei, he mea huri mai i te māngaro tipu, he tino pai te pirau-koiora, ā, he pai hoki mō te taiao nā te tukanga whakarite e whakakore ana i ngā rauemi mata matū hinu e pai ana mō te taiao. Ko te waikawa polylactic (PLA) tētahi o ngā rauemi pirau-koiora e whakamahia whānuitia ana, e whai hua ana, e whai hua ana hoki i tēnei wā.

He aha te PLA?

Pōro (waikawa lactic), whakarāpopototia heiPLA, e mōhiotia ana ko te waikawa polylactic,CAS 26100-51-6rāneiCAS 26023-30-3. Ka hangaia te waikawa polylactic mai i te koiora hei rauemi mata, i ahu mai i te taiao, ā, nō te taiao. Ko te tukanga hurihanga o te PLA e whai ake nei – ka taea e ngā matū te huri i te māngaro i tangohia mai i ngā hua pēnei i te kānga ki te LA mā te waikura me ngā mahi whakapūkara moroiti, ā, ka huri anō hoki ki te PLA mā te whakapūkara whakatōtō, te whakapūkara whakatuwhera mowhiti rānei, ka tutuki ai te "makutu" o te huri i ngā hua ki ngā kirihou.

He aha ngā āhuatanga me ngā painga o te waikawa polylactic?

Tino pirau

I raro i te mahi a ngā moroiti, ngā āhuatanga whakawairakau rānei, ka taea te tino pakaru hei CO2 me te H2O, ā, ka taea e te tere pirau koiora te eke ki te neke atu i te 90% i muri i ngā rā 180.

Ngā āhuatanga huakita taiao

He kaha tōna ki te ārai i te Candida albicans, Escherichia coli me Staphylococcus aureus.

Te hototahitanga koiora

Ko te waikawa lactic he matū taketake i roto i te tinana tangata, ā, ko te PLA he rauemi whakauru tangata kua whakamanahia e te FDA, kua whakamahia whānuitia i roto i te ao hauora.

He tino pai te tukatuka

Ko te pāmahana tukatuka PLA he 170~230 ℃, ā, ka taea te whakamahi i ngā tikanga tukatuka maha pēnei i te extrusion, te totoro, te miro, te pupuhi kiriata, te werohanga, te pupuhi, me te pupuhi.

Kāore e mura

Kāore e mura, ko te taupū hāora mutunga rawa he 21%, he iti te paoa e puta mai ana, ā, kāore he paoa pango.

Ngā rauemi mata hou

Ko te rauemi mata o te PLA i ahu mai i ngā pūtake waro koiora i hangaia e te photosynthesis.

Mā te piki haere o te mōhiotanga taiao o te tangata, ka whakakapia ngā rauemi matū kore-pai ki te taiao e ngā kirihou pirau-koiora. I te mea kua piki haere te manakohia o ngā kirihou pirau-koiora e te hapori,PLAka eke ki te urunga atu ki ngā mara o raro iho i te heke mai.