ʻO ka waikawa Polylactic (PLA) kahi ʻano hou o ka mea bio-based a me ka biodegradable hou, i hana ʻia mai nā mea maka starch i hāpai ʻia e nā kumuwaiwai mea kanu hou (e like me ka kulina, cassava, a pēlā aku). Hoʻopaʻa ʻia ka mea maka starch e loaʻa ai ka glucose, a laila hoʻomoʻa ʻia mai ka glucose a me kekahi mau ʻano e hana i ka waikawa lactic kiʻekiʻe, a laila hoʻohana ʻia ke ʻano hana synthesis kemika e synthesize i ka waikawa polylactic me kahi kaumaha molekala. Loaʻa iā ia ka biodegradability maikaʻi, a hiki ke hoʻohaumia loa ʻia e nā microorganisms ma ke ʻano ma lalo o nā kūlana kikoʻī ma hope o ka hoʻohana ʻana, a laila hoʻopuka i ka carbon dioxide a me ka wai, me ka ʻole o ka haumia ʻana i ke kaiapuni, he mea maikaʻi loa ia no ka pale ʻana i ke kaiapuni a ua ʻike ʻia he mea aloha i ke kaiapuni.
He kūpaʻa maikaʻi ka waikawa Polylactic, ʻo ka mahana hana he 170 ~ 230 ℃, a he kūpaʻa maikaʻi hoʻi i ka solvent. Hiki ke hana ʻia ma nā ʻano like ʻole, e like me ka extrusion, spinning, biaxial stretching, a me ka injection blow molding. Ma waho aʻe o ka biodegradable, ʻo nā huahana i hana ʻia me ka waikawa polylactic he biocompatibility maikaʻi, gloss, transparency, hand feel a me ke kūpaʻa wela, a me kekahi mau bacteria resistance, flame retardancy a me UV resistance, no laila he mea pono loa lākou. Hoʻohana nui ʻia e like me nā mea hoʻopili, nā fibers a me nā mea ulana ʻole, a pēlā aku, i kēia manawa i hoʻohana nui ʻia i nā lole (ʻaʻahu komo, lole waho), ʻoihana (kūkulu ʻana, mahiʻai, ululāʻau, hana pepa) a me nā kahua lapaʻau a me ke olakino.
Ka manawa hoʻouna: Sep-19-2022
