Ngokupheleleyo i-Bio-degradable Materials
Ngelixa kuyilwa impucuko yanamhlanje, zonke iintlobo zeemveliso zeplastiki zizisa nongcoliseko olumhlophe.Iitafile ezilahlwayo, iimveliso zeplastiki ezilahlwayo kunye nefilimu yeplastiki yezolimo kunzima ukuphinda isetyenziswe, kwaye iindlela zabo zonyango zitshisa kakhulu kunye nokungcwatywa.Ukutshisa kuya kuvelisa iigesi ezininzi eziyingozi kwaye kungcolise indalo.Ipolymer kwindawo yokulahla inkunkuma ayinakuchithwa yi-microorganisms ixesha elifutshane kwaye ingcolise indalo.Ifilimu yeplastiki eyintsalela ikhona emhlabeni, nto leyo ithintela ukukhula kweengcambu zesityalo kunye nokufunxwa kwamanzi kunye nezondlo, inciphisa ukungeneka komhlaba, kwaye ikhokelele ekunciphiseni isivuno sezityalo.Izilwanyana zinokufa ngenxa yokuvalwa kwamathumbu emva kokutya iplastiki.Iminatha yokuloba iifayibha ezenziweyo kunye neentambo ezilahlekileyo okanye ezilahliweyo elwandle zibangele umonakalo omkhulu kubomi baseLwandle, ngoko ke kuyafuneka ukukhuthaza ukusetyenziswa kohlaza nokomeleza ukhuseleko lokusingqongileyo.Izinto eziguquguqukayo zeBioodegradable ezihambelana nentsingiselo njengemveliso yobugcisa obuphezulu kunye neemveliso zokhuseleko lokusingqongileyo ziba yindawo eshushu yophando nophuhliso.
Enye yimathiriyeli enokubola ngokupheleleyo, njengeselulosi yendalo yepolymer, i-polycaprolactone yokwenziwa, njl.② Ngenxa yesenzo se-microbial biochemical, i-enzyme catalysis okanye i-acid-base catalysis ye-hydrolysis eyahlukeneyo;③ Ukuthotywa kwekhonkco leeradicals zasimahla ezibangelwa zezinye izinto.
Olunye udidi zizinto ezidibanisa izinto eziphilayo, ezifana nesitatshi kunye ne-polyethylene blends, ukubola kwayo kubangelwa ukutshatyalaliswa kwezinto ezidityanisiweyo kunye nokunciphisa i-polymer chain, okubangela ukuba ubunzima be-molecular ye-polymer buhlazeke kangangokuba bunokuthi bugaywe. ii-microorganisms, kwaye ekugqibeleni kwi-carbon dioxide (CO2) kunye namanzi.
Uninzi lwe-bio-izinto eziqhekezayo zixutywe nge-polyethylene kunye ne-polystyrene ngokongeza isitashi kunye ne-photosensitizer.Uphononongo lubonise ukuba iingxowa zeplastiki ezisekwe kwi-biodegradable biodegradable ekugqibeleni ziya kuphelela kwindawo yokulahla inkunkuma, ngaphandle kokudibana nokukhanya kwelanga, nokuba kukho ukuthotywa kwebhayoloji, ukonakaliswa ikakhulu yi-bio.-ukuthotywa.Uvavanyo lwexesha elithile lubonisa ukuba akukho ukuthotywa okucacileyo kweengxowa zenkunkuma, iingxowa zenkunkuma azikho umonakalo wendalo.
Ukusombulula ungcoliseko lokusingqongileyo, nangona iiplastikhi ezisekelwe kwisitatshi zisebenza ngakumbi kuneemveliso zeplastiki ezilahlwayo, kodwa zisasebenzisa i-polyethylene okanye izinto zepolyester ezingeyo-biodegradable njengezinto ezikrwada, zinokuba yimathiriyeli eyonakaliswayo, ukongeza kwisitatshi esongeziweyo kunokuthotywa. Inani elikhulu eliseleyo le-polyethylene okanye i-polyester iya kuhlala kwaye ingaboli ngokupheleleyo, iboliswe kuphela ibe ngamaqhekeza, ayinakuphinda isetyenziswe.Ke ngoko, imathiriyeli epheleleyo enokuguquguquka iba yinto ekugxilwe kuyo kuphando lwezinto ezonakalayo.
Ixesha lokuposa: Mar-26-2023