ʻO ka polylactic acid (PLA) kahi ʻano hou o ka bio-based a me renewable biodegradable material, i hana ʻia mai ka starch maka kumu i manaʻo ʻia e nā kumu mea kanu hou (e like me ke kulina, ka ʻoki, a me nā mea ʻē aʻe). Hoʻomaʻamaʻa ʻia ka starch maka mea e loaʻa ai ka glucose, a laila fermented mai ka glucose a me kekahi mau kānana e hana i ka waika lactic maʻemaʻe kiʻekiʻe, a laila hoʻohana ʻia ke ʻano synthesis kemika e synthesize polylactic acid me kekahi kaumaha mole. Loaʻa iā ia ka biodegradability maikaʻi, a hiki ke hoʻohaʻahaʻa loa ʻia e nā microorganism ma ke ʻano ma lalo o nā kūlana kikoʻī ma hope o ka hoʻohana ʻana, ma hope o ka hana ʻana i ka carbon dioxide a me ka wai, me ka ʻole o ka hoʻohaumia ʻana i ke kaiapuni, he mea maikaʻi loa ia no ka pale ʻana i ke kaiapuni a ʻike ʻia ʻo ia he mea pili kaiapuni.
ʻO ka polylactic acid ka paʻa wela maikaʻi, ʻo ka mahana o ka hana ʻana he 170 ~ 230 ℃, a he kūpaʻa maikaʻi kona. 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, nā huahana i hana ʻia me ka polylactic acid he biocompatibility maikaʻi, gloss, transparency, manaʻo lima 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 hoʻopihapiha, nā fibers a me nā nonwovens, a me nā mea ʻē aʻe, i kēia manawa i hoʻohana nui ʻia i nā lole (ka lole o waho, nā lole o waho), ʻoihana (kūkulu, mahiʻai, ululāʻau, hana pepa) a me nā kula olakino a me ke olakino.
Ka manawa hoʻouna: Sep-19-2022