Shamwari zhinji dzinobvunza kuti ndeupi musiyano uripo pakati pemabhegi ekurongedza anoshatisa uye mabhegi ekurongedza akazara? Hazvina kufanana here nebhegi rekurongedza rinoparara? Zvakaipa, pane musiyano pakati pemabhegi ekurongedza anoshatisa uye anoshatisa zvizere mabhegi ekurongedza.
Mabhegi ekuputira anoshatisa, zvinorehwa ndezvekuti anogona kuderedzwa, asi mabhegi ekurongedza akapatsanurwa akakamurwa kuva "anoshatisa" uye "anokanganisa zvizere". Chii chakasiyana? Ramba uchiverenga ruzivo rudiki rwakapihwa naAnrui.
Degradable packaging bags zvinoreva kuwedzera imwe chiyero chekuwedzera (senge starch, modified starch kana imwe cellulose, photosensitizers, biodegradants, etc.) Mabhegi epurasitiki anoparara.
Bag rekurongedzerwa rinoparara zvachose zvinoreva kuti bhegi repurasitiki rekurongedza rakashatiswa zvachose kuita mvura uye kabhoni dhaibhorosi. Nzvimbo huru yeiyi inoparara zvachose inogadziriswa kubva kuchibage, mufarinya, nezvimwewo kuita lactic acid, inova PLA. Polylactic asidhi (PLA) imhando nyowani yebiological substrate uye inogona kuvandudzwa biodegradable zvinhu. Iyo starch yakasvibirira inocheneswa kuti iwane glucose, yobva yaviriswa kubva kuglucose uye mamwe madhiri kuti ibudise yakakwira-kuchena lactic acid, iyo inozogadzirwa nemakemikari synthesis nzira. molecular uremu polylactic asidhi. Iine biodegradability yakanaka, uye inogona kuderedzwa zvachose nehutachiona mumasikirwo pasi pemamiriro ezvinhu chaiwo mushure mekushandiswa, pakupedzisira ichigadzira carbon dioxide nemvura, pasina kusvibisa zvakatipoteredza, iyo inobatsira zvikuru kuchengetedza zvakatipoteredza uye chinhu chinochengetedza zvakatipoteredza kune vashandi. Parizvino, iyo huru-yakavakirwa bio-yakavakirwa zvinhu zveiyo yakaora yakazara yekurongedza bhegi inoumbwa nePLA + PBAT, iyo inogona kuparara zvachose mumvura uye carbon dioxide mumwedzi 3-6 pasi pemamiriro ecompost (60-70 madhigirii), pasina. kusvibiswa kwemhoteredzo.
Sei PBAT ichifanira kuwedzerwa? Anrui yekuyedza makemikari mainjiniya akabatsira mupepeti kuidudzira. PBAT icopolymer yeadipic acid, 1,4-butanediol uye terephthalic acid. Iyo ikemikari synthesis inogona kuve yakazara biodegraded. Iyo aliphatic-inonhuhwirira polymer yePBAT ine yakanakisa kuchinjika uye inogona kushandiswa firimu extrusion, blow molding, extrusion coating uye mamwe maitiro ekuumba. Chinangwa chekubatanidza PLA nePBAT ndechekuvandudza kuoma, biodegradation uye kuumba processability yePLA. PLA nePBAT hazvienderane, saka kusarudza akakodzera anowirirana kunogona kuvandudza zvakanyanya mashandiro ePLA.
Ona pano kuti unzwisise mutsauko uripo pakati pemabhegi ekurongedza anoshatisa uye anoshatisa zvizere emabhegi ekurongedza.
Mabhegi ekuputira anoshatisa, zvinorehwa ndezvekuti anogona kuderedzwa, asi mabhegi ekurongedza akapatsanurwa akakamurwa kuva "anoshatisa" uye "anokanganisa zvizere". Degradable packaging bags zvinoreva kuwedzera imwe chiyero chekuwedzera (senge starch, modified starch kana imwe cellulose, photosensitizers, biodegradants, etc.) Mabhegi epurasitiki anoparara. Bag rekurongedzerwa rinoparara zvachose zvinoreva kuti bhegi repurasitiki rekurongedza rakashatiswa zvachose kuita mvura uye kabhoni dhaibhorosi. Nzvimbo huru yeiyi inoparara zvachose inogadziriswa kubva kuchibage, mufarinya, nezvimwewo kuita lactic acid, inova PLA.
Polylactic asidhi (PLA) imhando nyowani yebiological substrate uye inogona kuvandudzwa biodegradable zvinhu. Iyo starch yakasvibirira inocheneswa kuti iwane glucose, yobva yaviriswa kubva kuglucose uye mamwe madhiri kuti ibudise yakakwira-kuchena lactic acid, iyo inozogadzirwa nemakemikari synthesis nzira. molecular uremu polylactic asidhi. Iine biodegradability yakanaka, uye inogona kuderedzwa zvachose nehutachiona mumasikirwo pasi pemamiriro ezvinhu chaiwo mushure mekushandiswa, pakupedzisira ichigadzira carbon dioxide nemvura, pasina kusvibisa zvakatipoteredza, iyo inobatsira zvikuru kuchengetedza zvakatipoteredza uye chinhu chinochengetedza zvakatipoteredza kune vashandi.
Parizvino, iyo huru-yakavakirwa bio-yakavakirwa zvinhu zveiyo yakaora yakazara yekurongedza bhegi inoumbwa nePLA + PBAT, iyo inogona kuparara zvachose mumvura uye carbon dioxide mumwedzi 3-6 pasi pemamiriro ecompost (60-70 madhigirii), pasina. kusvibiswa kwemhoteredzo. Sei PBAT ichifanira kuwedzerwa? Vagadziri vepakeji vanochinjika vari pano kuti vatsanangure kuti PBAT icopolymer yeadipic acid, 1,4-butanediol, uye terephthalic acid, inova mafuta akagadzirwa nemakemikari anogona kuve akazara biodegradable. Inonhuhwirira-inonhuhwirira polymer, PBAT ine yakanakisa kuchinjika uye inogona kushandiswa firimu extrusion, blow molding, extrusion coating uye mamwe maitiro ekuumba. Chinangwa chekubatanidza PLA nePBAT ndechekuvandudza kuoma, biodegradation uye kuumba processability yePLA. PLA nePBAT hazvienderane, saka kusarudza akakodzera anowirirana kunogona kuvandudza zvakanyanya mashandiro ePLA.
Nguva yekutumira: Feb-28-2022