Mayelana ne-PLA

I-PLA, eyaziwa nangokuthi i-polylactic acid i-polymerized esuka ku-poly lactic acid.I-Polylactic acid inokubola okuhle kakhulu kwe-biodegradability, ukuhambisana nokumuncwa, iyimpahla ye-polymer engenabuthi, engeyona yokwenziwa .lts impahla eluhlaza i-polylactic acid, etholakala ikakhulukazi ekuvubeleni kwesitashi, njenge-com ne-rc .Ingatholakala futhi ku-cellulose, udoti wasekhishini noma imfucumfucu yezinhlanzi.

I-PLA inezinhlobonhlobo zezinto ezingavuthiwe, futhi imikhiqizo eyenziwe kuyo ingafakwa umquba ngokuqondile noma ishiswe, engahlangabezana nezidingo zentuthuko esimeme Ukucaca okuhle nokuqina okuthile, ukuhambisana kwe-bio-compatibility kanye nokumelana nokushisa kwe-PLA yizizathu eziyinhloko. ukuze isetshenziswe kabanzi.

ngaphezu kwalokho, i-PLA ine-thermal-plasticity futhi ingasetshenziswa emikhakheni eminingi, efana nezinto zokupakisha, izigcwalisi, njll .. isetshenziselwa ikakhulukazi izindatshana ezilahlwayo ezifana ne-tableware elahlayo nezinto zokupakisha, kanye nezinto zikagesi nokunakekelwa kwezokwelapha.

Uma kuqhathaniswa nemikhiqizo ye-petrochemical yendabuko, ukusetshenziswa kwamandla ekukhiqizeni i-polylactic acid kungu-20% kuya ku-50% kuphela wemikhiqizo ye-petrochemical, futhi isikhutha esikhiqizwayo singamaphesenti angu-50 kuphela wemikhiqizo ye-petrochemical .Ngakho-ke, ukuthuthukiswa kwezinto ezibolayo ze-polylactic kuyadingeka. ukudambisa izinkinga zomhlaba jikelele zezemvelo namandla.

Imininingwane ye-PLA

1.I-Biodegradability

Uma kuqhathaniswa namapulastiki endabuko, i-polylactic acid ingehliswa ibe yi-CO2 ne-H2O ngama-microorganisms nokukhanya.Imikhiqizo ye-bio-degradation ayinabo ubuthi futhi ayinabungozi futhi ngeke ingcolise imvelo.I-monomer yokukhiqiza i-polylactic, engavutshelwa izitshalo ezifana nerayisi likakolweni kanye nebhitrudi kashukela noma imikhiqizo yohlobo lwezolimo.Ngakho-ke, impahla eluhlaza yokukhiqiza i-polylactic acid iyavuseleleka.I-Polylactic acid njengezinto ezivelayo ezibolayo zisetshenziswa kabanzi.

2. I-Bio-compatibility kanye nekhono lokumuncwa

I-Polylactic acid ingenziwa i-hydrolyzed nge-asidi noma i-enzyme ukuze yakhe i-lactic acid emzimbeni womuntu.Njenge-metabolite yamaseli, i-polylactic acid ingaphinde isetshenziswe ngama-enzyme emzimbeni, ukukhiqiza i-CO2 ne-H2O.Ngakho-ke, i-polylactic acid ayinabo ubuthi futhi ayinabungozi emzimbeni womuntu ngaphezu kwalokho inokuhambisana okuhle kwe-bio kanye nekhono lokumuncwa kwe-bio, i-Polylactic acid iqinisekiswe yi-US Food and Drug Administration engasetshenziswa njenge-bio-material ukuze ifakwe ngaphakathi. abantu.

3. Ukwazi Ngomzimba

Njengempahla ye-polymer ye-thermoplastic, i-poly lactic acid ine-plasticity enhle kanye nezakhiwo zokucubungula ngokomzimba, ezinephuzu eliphezulu lokuncibilika, ukunwebeka okuhle nokuguquguquka, kanye nekhono elihle kakhulu lokubumba okushisayo.Izinto ze-poly lactic acid njengezinto ze-polymer ezifana ne-polypropylene (PP), i-polystyrene(PS), ne-polypropylene ether resin (PPO), zingacutshungulwa ngokukhipha, ukwelula, nokubunjwa kokushaywa komjovo.