Intshayelelo emfutshane yePLA

Malunga ne-PLA

I-PLA, ekwabizwa ngokuba yi-polylactide, yi-polyester eyenziwe nge-polymerized ukusuka kwi-lactic acid.Iasidi yePolylactic ine-biodegradability egqwesileyo, ukuhambelana kunye nokufunxa.Yinto engeyotyhefu, ayithukuthezi i-polymer yokwenziwa.Imveliso yayo ekrwada yi-lactic acid, ephuma ikakhulu ekuvundisweni kwesitatshi, esifana nombona nerayisi.Inokufumaneka nakwi-cellulose, inkunkuma yasekhitshini okanye inkunkuma yeentlanzi.

I-PLA inoluhlu olubanzi lwezinto eziluhlaza, kunye neemveliso ezenziwe kuyo zingaxutywa ngokuthe ngqo okanye zitshiswe, ezinokuhlangabezana neemfuno zophuhliso oluzinzileyo.Ukungafihli kakuhle kunye nokuqina okuthile, ukuhambelana kwe-biocompatibility kunye nokumelana nobushushu kwe-PLA zezona zizathu zokusetyenziswa kwayo ngokubanzi.

Ukongeza, i-PLA ine-thermoplasticity kwaye ingasetyenziselwa kwiinkalo ezininzi, ezifana nezixhobo zokupakisha, iifayili, njl.
Xa kuthelekiswa neemveliso ze-petrochemical zendabuko, ukusetyenziswa kwamandla ekuveliseni i-polylactic acid kuphela kwi-20% ukuya kwi-50% yeemveliso ze-petrochemical, kunye ne-carbon dioxide eveliswayo yi-50% kuphela yeemveliso ze-petrochemical.Ngoko ke, ukuphuhliswa kwe-polylactic acid izinto ezichithwayo ziyimfuneko ekunciphiseni iingxaki zokusingqongileyo kunye nehlabathi jikelele.

Iimpawu zePLA
1. Ukonakala kwezinto eziphilayo
Xa kuthelekiswa neeplastiki zendabuko, i-polylactic acid inokutshatyalaliswa kwi-CO2 kunye ne-H2O nge-microorganisms kunye nokukhanya.Iimveliso zayo zokuthotywa azinatyhefu kwaye azinabungozi, kwaye aziyi kungcolisa indalo.I-monomer yokuvelisa i-polylactic acid yi-lactic acid, enokuthi ivundiswe zizityalo ezifana nengqolowa, irayisi kunye ne-beet yeswekile okanye imveliso yezolimo.Ngoko ke, izinto eziluhlaza zokuvelisa i-polylactic acid iyahlaziywa.Iasidi yePolylactic njengento ekhulayo enokubola isetyenziswa kakhulu.
2. I-Biocompatibility kunye ne-Absorbability
I-asidi ye-Polylactic inokuthi i-hydrolyzed nge-asidi okanye i-enzyme ukwenza i-lactic acid emzimbeni womntu.Njenge-metabolite yeeseli, i-lactic acid inokuphinda ifakwe kwi-enzymes emzimbeni, ukuvelisa i-CO2 kunye ne-H2O.Ke ngoko, i-polylactic acid ayinayo ityhefu kwaye ayinabungozi kumzimba womntu, ngaphezu koko, ine-biocompatibility elungileyo kunye ne-bioabsorbability.I-Polylactic acid iqinisekiswe yi-US Food and Drug Administration enokuthi isetyenziswe njenge-biomaterial yokufakelwa ebantwini.

3. Ukwazi ukwenza izinto ngokwasemzimbeni
Njengemathiriyeli ye-polymer ye-thermoplastic, i-polylactic acid ine-plastiki efanelekileyo kunye neempawu zokulungiswa komzimba, kunye neendawo eziphezulu zokunyibilika kunye ne-crysallinity, i-elasticity enhle kunye ne-flexibilit, kunye ne-thermoformability egqwesileyo.Izinto ze-Polylactic acid, ezifana nezixhobo ze-polymer ezifana ne-polypropylene (PP), i-polystyrene (PS), kunye ne-polyphenylene ether resin (PPO), inokucutshungulwa nge-extrusion, ukuzolula, kunye ne-injection blow blowing.