Nezve PLA
PLA, inozivikanwawo sepolylactide, ipolyester yakagadzirwa kubva kulactic acid.Polylactic asidhi ine yakanakisa biodegradability, kuenderana uye kunwisa.Iyo isiri-chepfu, isiri-inoshungurudza yekugadzira polymer zvinhu.Chigadzirwa chayo chinonzi lactic acid, iyo inonyanya kutorwa kubva pakuviriswa kwestarch, sechibage nemupunga.Inogonawo kuwanikwa kubva kune cellulose, marara ekicheni kana marara ehove.
PLA ine huwandu hwakasiyana hwezvigadzirwa, uye zvigadzirwa zvinogadzirwa kubva pazviri zvinogona kuve zvakanangana necompost kana kupiswa, izvo zvinogona kuzadzisa zvinodiwa zvekusimudzira.Kujeka kwakanaka uye kumwe kuoma, biocompatibility uye kupisa kuramba kwePLA ndizvo zvikonzero zvikuru zvekushandiswa kwayo kwakapararira.
Pamusoro pezvo, PLA ine thermoplasticity uye inogona kuiswa kune dzakawanda minda, senge yekurongedza zvinhu, fibers, nezvimwewo .. Inonyanya kushandiswa pazvinhu zvinoraswa senge zvinoraswa tableware uye kurongedza zvinhu, pamwe nemidziyo yemagetsi uye kurapwa.
Kuenzaniswa neyakajairwa petrochemical zvigadzirwa, kushandiswa kwesimba mukugadzirwa kwepolylactic acid kunongova 20% kusvika 50% yezvigadzirwa zvepetrochemical, uye iyo kabhoni dhaibhorosi inogadzirwa inongova 50% yezvigadzirwa zvepetrochemical.Naizvozvo, kuvandudzwa kwepolylactic acid zvinoshatisa zvinhu zvinodikanwa kudzikisa pasi rose kwezvakatipoteredza uye simba matambudziko.
Zvimiro zvePLA
1. Biodegradability
Kuenzaniswa nemapurasitiki echinyakare, polylactic asidhi inogona kuderedzwa kuita CO2 neH2O nema microorganisms uye chiedza.Zvigadzirwa zvayo zvekusvibisa hazvina chepfu uye hazvikuvadzi, uye hazvisvibise nharaunda.Iyo monomer yekugadzira polylactic acid ilactic acid, iyo inogona kuviriswa nezvirimwa zvakaita segorosi, mupunga uye shuga beet kana zvekurima-zvigadzirwa.Naizvozvo, iyo mbishi yekugadzira polylactic asidhi inodzokororwa.Polylactic asidhi sechinhu chiri kubuda biodegradable zvinhu chinoshandiswa zvakanyanya.
2. Biocompatibility uye Absorbability
Polylactic asidhi inogona kuve hydrolyzed neasidhi kana enzyme kugadzira lactic acid mumuviri wemunhu.Semetabolite yemasero, lactic acid inogona kuwedzerwa kushandiswa nema enzymes mumuviri, kugadzira CO2 uye H2O.Naizvozvo, polylactic asidhi haina chepfu uye haina ngozi kumuviri wemunhu, uyezve ine yakanaka biocompatibility uye bioabsorbability.Polylactic acid inosimbiswa neUS Food and Drug Administration iyo inogona kushandiswa sebiomaterial yekuisirwa muvanhu.
3. Physically Machinable
Seye thermoplastic polymer zvinhu, polylactic asidhi ine yakanaka yepurasitiki uye yemuviri kugadzirisa zvivakwa, ine yakakwirira melting point uye crysallinity, yakanaka elasticity uye flexibilit, uye yakanakisa thermoformability.Polylactic acid zvinhu, senge polymer zvinhu zvakaita sepolypropylene (PP), polystyrene (PS), uye polyphenylene ether resin (PPO), inogona kugadzirwa neextrusion, kutambanudza, uye jekiseni kuvhuvhuta.
Nguva yekutumira: Aug-18-2023
