Ku saabsan PLA
PLA, oo sidoo kale loo yaqaan polylactide, waa polyester-ka polymer laga sameeyay lactic acid.Polylactic acid waxay leedahay biodegradability aad u fiican, waafaqid iyo nuugista.Waa wax aan sun ahayn, oo aan kicinayn walxo polymer synthetic.Maadkeeda cayriin waa lactic acid, taas oo inta badan laga helo halsano ee istaarijka, sida galleyda iyo bariiska.Waxa kale oo laga heli karaa cellulose, qashinka jikada ama qashinka kalluunka.
PLA waxay leedahay alaab cayriin oo kala duwan, alaabada laga sameeyayna si toos ah ayaa loo qasi karaa ama loo gubi karaa, taasoo buuxin karta shuruudaha horumar waara.Daah-furnaanta wanaagsan iyo adkaanta qaarkood, biocompatibility iyo caabbinta kulaylka ee PLA ayaa ah sababaha ugu waaweyn ee codsigeeda baahsan.
Intaa waxaa dheer, PLA waxay leedahay thermoplasticity waxaana lagu dabaqi karaa meelo badan, sida qalabka wax lagu duubo, fiilooyinka, iwm.
Marka la barbardhigo alaabada petrochemical ee dhaqameed, isticmaalka tamarta ee wax soo saarka polylactic acid waa 20% ilaa 50% ee alaabta batroolka, iyo kaarboon dioxide ee la soo saaro waa 50% kaliya alaabta batroolka.Sidaa darteed, horumarinta qalabka waxyeeleeya polylactic acid waa lagama maarmaan si loo yareeyo dhibaatooyinka deegaanka iyo tamarta caalamiga ah.
Tilmaamaha PLA
1. Biodegradadability
Marka la barbar dhigo balaastikada dhaqameed, polylactic acid waxaa hoos u dhigi kara CO2 iyo H2O by microorganisms iyo iftiinka.Wax-soosaarkeedu waa kuwo aan sun ahayn oo aan waxyeello lahayn, mana wasakhayn doonaan deegaanka.monomer-ka soo saarida polylactic acid waa lactic acid, kaas oo lagu khamiirin karo dalagyada sida sarreenka, bariiska iyo dabocase sonkorta ama wax soo saarka beeraha.Sidaa darteed, alaabta ceeriin ee soo saarida polylactic acid waa la cusboonaysiin karaa.Polylactic acid sida walxo biodegradable ah oo soo baxaya ayaa si weyn loo isticmaalaa.
2. Biocompatibility iyo nuugista
Polylactic acid waxa lagu hydrolyzed karaa aashito ama ensaymes si ay u sameeyaan lactic acid ee jidhka bini'aadamka.Sida dheef-shiid kiimikaad ee unugyada, lactic acid waxaa lagu sii kordhin karaa enzymes-ka jirka, si loo soo saaro CO2 iyo H2O.Sidaa darteed, polylactic acid waa mid aan sun ahayn oo aan waxyeello u lahayn jidhka bini'aadamka, sidoo kale waxay leedahay bioocompatibility wanaagsan iyo bioabsorbability.Polylactic acid waxaa shahaado siisay Maamulka Cuntada iyo Dawooyinka ee Mareykanka oo loo isticmaali karo biomaterial ahaan in lagu geliyo aadanaha
3. Jir ahaan Machin
Maaddada thermoplastic polymer-ka, polylactic acid waxay leedahay caag wanaagsan iyo sifooyin farsamaynta jirka, oo leh barta dhalaalka sare iyo crysallinity, dabacsanaan wanaagsan iyo dabacsanaan, iyo heerkulbeeg heer sare ah.Qalabka polylactic acid, sida walxaha polymer sida polypropylene (PP), polystyrene (PS), iyo polyphenylene ether resin (PPO), ayaa lagu farsamayn karaa extrusion, fidinta, iyo duritaanka dharbaaxada.
Waqtiga boostada: Agoosto-18-2023
