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Pulasitiki yatsopano ya PET imalola ukadaulo kubwezera chilengedwe

  Pulasitiki, kupangidwa kwakukulu m'zaka za zana la 20, maonekedwe ake alimbikitsa kupita patsogolo kwa mafakitale ndikusintha moyo wa munthu;pulasitiki, kupangidwa koipa m'zaka za zana la 20, kuipitsa kwake komanso ngakhale zotsatira zoipa za chilengedwe sizinathebe - ubwino wa pulasitiki ndi Zoipa zili ngati "lupanga lakuthwa konsekonse" m'moyo weniweni, ndi wamphamvu mokwanira. , koma ndi zoopsa kwambiri.Ndipo kwa ife, mtengo wotsika, kukhazikika kwamafuta, mphamvu zamakina, kusinthika ndi kuyanjana kwa mapulasitiki kumapangitsa kuti zikhale zovuta kuti tisagwiritse ntchito popanga zinthu zathu, zomwe zimatsogolera ku mfundo yakuti ngakhale timamvetsetsa kuti mapulasitiki akhoza kuopseza chilengedwe. , koma tiyenerabe kudalira zinthu zimenezi.Ndichifukwa chakenso kuti "kuletsa" kapena "kusintha" mapulasitiki kwakhala mutu wa nthawi yaitali pankhani ya sayansi ya zipangizo pofuna kuteteza chilengedwe.

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Ndipotu, ndondomekoyi ilibe zotsatira.Kwa nthawi yayitali, kafukufuku wokhudza "kusintha mapulasitiki" akupitilirabe patsogolo, ndipo zotsatira zambiri zodalirika komanso zothandiza zakhala zikuchitika, monga mapulasitiki a polylactic acid.Ndipo posachedwapa, gulu lofufuza kuchokera ku Sukulu ya Basic Sciences ku Swiss Federal Institute of Technology ku Lausanne lapanga pulasitiki yochokera ku biomass yofanana ndi polyethylene terephthalate (PET).Zinthu zatsopanozi zili ndi zabwino zamapulasitiki azikhalidwe monga kukhazikika kwamafuta, mphamvu zamakina odalirika, komanso pulasitiki yolimba.Pa nthawi yomweyi, ntchito yopangira zinthu imakhalanso yabwino kwambiri.Akuti pulasitiki yatsopano ya PET imagwiritsa ntchito glyoxylic acid pokonza pulasitiki, yomwe ndi yosavuta kugwiritsa ntchito, koma imatha kusintha 25% ya zinyalala zaulimi kapena 95% ya shuga woyera kukhala pulasitiki.Kuphatikiza pa kukhala kosavuta kupanga, zinthuzi zimathanso kuwonongeka chifukwa cha kapangidwe kake ka shuga.

 

Ndikoyenera kutchula kuti pakali pano, ochita kafukufuku akwanitsa kukonza zinthuzi kukhala zinthu zapulasitiki wamba monga mafilimu onyamula, ndipo atsimikizira kuti angagwiritsidwe ntchito ngati chosindikizira cha 3D chogwiritsidwa ntchito (ndiko kuti, chingapangidwe kukhala filaments kuti 3D printing). ), chifukwa chake tili ndi chifukwa choyembekeza kuti nkhaniyi izikhala ndi zochitika zambiri zogwiritsa ntchito mtsogolo.

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Kutsiliza: Kupanga zinthu zapulasitiki ndi njira yothetsera kuipitsidwa kwa pulasitiki kuchokera komwe kumateteza chilengedwe.Komabe, kuchokera kumalingaliro a anthu wamba, kwenikweni, zotsatira za chitukukochi pa ife ndizowonjezera kuti zida zomwe zimagwiritsidwa ntchito m'moyo zimayamba kusintha.Mosiyana ndi zimenezi, kuyambira m'miyoyo yathu, ngati tikufunadi kuthetsa kuipitsidwa kwa pulasitiki kuchokera ku gwero, mwinamwake chofunika kwambiri, kupewa kuzunzidwa ndi kusiyidwa kwa mapulasitiki, kulimbikitsa kasamalidwe kobwezeretsanso ndi kuyang'anira msika, ndikuletsa zowononga kuti zisamalowe mu chilengedwe.


Nthawi yotumiza: Aug-15-2022