1. Caag ku salaysan bayooloji oo u dhiganta balaastikada nooledegradable
Marka loo eego qeexitaannada khuseeya, balaastikada bio-based-based waxay tixraacdaa balaastikada ay soo saaraan noolaha yaryar ee ku salaysan walxaha dabiiciga ah sida istaarijka.Biomass for bioplastics synthesis waxay ka iman kartaa galleyda, sonkorta sonkorta ama cellulose.Iyo caag biodegradable, waxaa loola jeedaa xaaladaha dabiiciga ah (sida ciidda, ciidda iyo biyaha badda, iwm) ama xaalado gaar ah (sida composting, xaaladaha dheefshiidka anaerobic ama dhaqanka biyaha, iwm), by fal microbial ah (sida bakteeriyada, caaryada, fangaska iyo algae, iwm.) waxay keenaan nabaad-guur, oo aakhirka u jajaban kaarboon dioxide, methane, biyo, cusbo aan dabiici ahayn oo macdan ah iyo walxo cusub oo caag ah.Balaastikada bio-based-ku-salaysan waa la qeexaa oo la kala saaray iyadoo lagu saleynayo halka ay ka soo jeedaan walxaha;Balaastikada noolaha, dhanka kale, waxaa lagu kala soocaa dhinaca dhamaadka nolosha.Si kale haddii loo dhigo, 100% balaastig bayoloji ah lagama yaabo inay noqdaan kuwo noolaha, halka qaar ka mid ah caagadaha batroolka ku salaysan ee dhaqameed, sida butylene terephthalate (PBAT) iyo polycaprolactone (PCL), ay noqon karaan.
2. Biyodegradable waxaa loo arkaa inay tahay mid noole-gacan
Burburinta balaastikada waxaa loola jeedaa xaaladaha deegaanka (heerkulka, qoyaanka, qoyaanka, oksijiinta, iwm) ee hoos yimaada saameynta isbeddelka weyn ee qaab dhismeedka, habka lumitaanka waxqabadka.Waxa loo qaybin karaa nabaad-guurka makaanikada, biodegradation, photodegradation, xaalufka heerkulka-oxygen iyo xaalufka photooxygen.Haddii balaastiigu ay si buuxda biodegrade u noqon doonto waxay ku xiran tahay dhowr arrimood, oo ay ku jiraan crystallinity, additives, microorganisms, heerkulka, pH-ga deegaanka iyo waqtiga.Maqnaanshaha xaalado ku habboon, balaastiig badan oo la dumin karo kaliya ma awoodaan inay si buuxda biodegrade ugu sameeyaan, laakiin sidoo kale waxay saameyn xun ku yeelan karaan deegaanka iyo caafimaadka aadanaha.Sida qayb ka mid ah hoos u dhigista oksijiinta ee waxyaabaha lagu daro balaastikada, kaliya dillaaca walxaha, hoos u dhaca qaybo balaastik ah oo aan la arki karin.
3. Tixgeli biodegradation-ka hoos yimaada xaaladda composting warshadaha sida biodegradation ee deegaanka dabiiciga ah
Si sax ah uma sawiri kartid calaamad siman oo u dhaxaysa labada.Balaastikada la burburin karo waxay ka tirsan yihiin qaybta balaastikada noolaha.Bacaha noolaha ah waxa kale oo ka mid ah balaastikada kuwaas oo ah kuwo noole deg-deg ah oo qaab anaerobic ah.Balaastigga Compostable waxaa loola jeedaa caagga xaaladaha bacriminta, iyada oo loo marayo fal-dambiyeedka microorganisms, in waqti go'an galay carbon dioxide, biyaha iyo milix aan organicized macdanta iyo walxaha cusub ee ku jira canaasiirta, iyo ugu dambeyntii sameeyay compost content biraha culus, baaritaanka sunta. , qashinka haraaga ah waa in ay buuxiyaan shuruudaha heerarka khuseeya.Caagagga la burburin karo ayaa loo sii kala qaybin karaa compost warshadaha iyo compost beerta.Bacaha la burburin karo ee suuqa ku jira asal ahaan waa balaastiig noolodegradable ah oo hoos yimaada xaaladda bacriminta warshadaha.Sababtoo ah hoos xaaladda caag ah compost iska leh biodegradable ah, sidaas darteed, haddii caag ah la tuuro compostable (sida biyaha, ciidda) deegaanka dabiiciga ah, xaalufka caag ah ee deegaanka dabiiciga ah waa mid aad u gaabis ah, ma si buuxda u xaalufiyey karaa waqti gaaban. sida kaarboon laba ogsaydhiyaha iyo biyaha saamaynta xun ee ay ku leedahay deegaanka iyo caaga-dhaqameedka, ma jiro farqi weyn oo la taaban karo.Intaa waxaa dheer, waxaa la tilmaamay in baco-biodegradable, marka lagu daro balaastikada kale ee dib loo warshadeyn karo, ay yareyn karto sifooyinka iyo waxqabadka alaabta dib loo warshadeeyay.Tusaale ahaan, istaarijka ku jira polylactic acid waxay u horseedi kartaa godadka iyo dhibcaha filimka laga sameeyay balaastiig dib loo warshadeeyay.
Waqtiga boostada: Jul-14-2022