Zvizere Bio-degradable Materials
Ndichiri kugadzira budiriro yemazuva ano, marudzi ese ezvigadzirwa zvepurasitiki zvinounzawo kusvibiswa chena.Zvigadzirwa zvepatafura zvinoraswa, zvigadzirwa zvepurasitiki zvinoraswa uye firimu repurasitiki rekurima zvakaoma kudzokorodza, uye nzira dzadzo dzekurapa dzinonyanya kupisa nekuvigwa.Kupisa kunoburitsa magasi akawanda anokuvadza uye kusvibisa nharaunda.Iyo polymer iri mugomba remarara haigone kuodzwa nema microorganisms kwenguva pfupi uye kusvibisa nharaunda.Iyo firimu yepurasitiki yasara iripo muvhu, izvo zvinotadzisa kusimukira kwemidzi yezvirimwa uye kutorwa kwemvura nekudya, zvinoderedza kupinza kwevhu, uye zvinotungamira mukuderedza goho.Mhuka dzinogona kufa nekuvharika kwematumbo mushure mekudya chiputi chepurasitiki.Synthetic fiber hove mambure uye mitsetse yakarasika kana kusiiwa mugungwa zvakonzera kukuvadza kwakanyanya kuhupenyu hweMarine, saka zvakakosha kukurudzira kushandiswa kwegirinhi uye kusimbisa kuchengetedza kwezvakatipoteredza.Zvigadzirwa zveBiodegradable zvinoenderana nemaitiro ezvigadzirwa zvepamusoro-tekinoroji uye zvigadzirwa zvekuchengetedza kwezvakatipoteredza zvave kuita nzvimbo yekutsvagisa nekusimudzira.
Imwe ndeye zvachose biodegradable zvinhu, zvakadai natural polymer cellulose, synthetic polycaprolactone, zvichingodaro, iyo kuora kwayo kunonyanya kunobva: ①kukurumidza kukura kwema microorganisms kunotungamirira mukuparara kwemuviri kwechimiro chepurasitiki;② Nekuda kweiyo microbial biochemical action, enzyme catalysis kana acid-base catalysis yeakasiyana hydrolysis;③ Kuparara kweketani yemahara radicals inokonzerwa nezvimwe zvinhu.
Chimwe chikamu ndeye biodisintegrating zvinhu, senge starch uye polyethylene blends, iyo kuora kwayo kunonyanya kukonzerwa nekuparadzwa kwezvinowedzerwa uye kupera simba kwepolymer chain, zvichiita kuti huremu hwepolymer hudzikire kusvika padanho rekuti inogona kugayiwa ne. microorganisms, uye pakupedzisira ku carbon dioxide (CO2) uye mvura.
Yakawanda bio-disintegrating zvinhu zvinosanganiswa ne polyethylene uye polystyrene nekuwedzera starch uye photosensitizer.Zvidzidzo zvakaratidza kuti starch-based biodegradable mabhegi epurasitiki anozopedzisira apinda mudura, kunze kwekusangana nechiedza chezuva, kunyangwe paine biological degradation, kuparara kwacho kunonyanya kuve bio.-kudzikisira.Imwe bvunzo yenguva inoratidza kuti hapana kuparara kuri pachena kwemasaga emarara, masaga emarara haana kukuvara kwechisikigo.
Kugadzirisa kusvibiswa kwezvakatipoteredza, kunyangwe mapurasitiki ane starch anoshanda kupfuura anoraswa epurasitiki zvigadzirwa, asi achiri kushandisa asiri-biodegradable polyethylene kana polyester zvinhu seyakagadzirwa, inogona kungova semi-kuora zvinhu, kuwedzera kune yakawedzera starch inogona kuderedzwa, iyo yasara nhamba huru yepolyethylene kana polyester icharamba ichiripo uye isiri yakazara biodegradable, yakaora chete kuita zvidimbu, zvisingakwanisi kushandiswazve.Naizvozvo, yakazara biodegradable zvinhu zvinove zvinotariswa pakutsvagisa kwezvinhu zvinoshatisa.
Nguva yekutumira: Mar-26-2023