nūhou

Me ka holomua o kēia au, ke nānā nui nei ka poʻe i ka palekana o ke kaiapuni, a ua lilo ka hoʻomohala ʻōmaʻomaʻo ʻoihana i mea alakaʻi hou. No laila, he mea nui nā mea biodegradable. No laila he aha nā mea biobased?

ʻO nā mea biobased e pili ana i nā kumuwaiwai biomass hou i hoʻokumu ʻia ma o ka photosynthesis ma ke ʻano he mau mea maka, i hoʻololi ʻia i nā huahana olaola ma o ka ʻenehana fermentation olaola, a laila hoʻomaʻemaʻe ʻia a polymerized i loko o nā biomaterials polymer e pili ana i ke kaiapuni. Hiki i nā mea biodegradable ke hoʻoheheʻe i CO2 a me H20 ma lalo o ka hana microbial a i ʻole nā ​​​​kūlana composting. Ke hoʻohālikelike ʻia me nā mea petroleum, hiki i nā mea biobased ke hōʻemi i nā hoʻokuʻu kalapona a hiki i ka 67%.

Nā hoʻokuʻu kalapona maʻamau i ke kaʻina hana holoʻokoʻa o kekahi mau polymers (kg CO2/kg huahana):

I ke ola o kēlā me kēia lā, ʻaʻole hiki iā mākou ke hana me ka ʻole o nā huahana plastik, akā ua ʻike mākou a pau ʻaʻole pili ka plastik i ke kaiapuni a ʻo ia ka huahana nui o ka "ʻōpala keʻokeʻo". Eia nō naʻe, ua nui nā huahana plastik i ko mākou ola o kēlā me kēia lā. ʻO ka hopena, ua lilo mālie nā plastik palaho i mea hou.

No kēia hopena, ua hoʻomohala nā kānaka ʻepekema i kahi huahana biodegradable -waikawa polylacticʻO kēia palakiko, ka mea i hoʻololi ʻia mai ka starch mea kanu, he biodegradability maikaʻi loa a he aloha i ke kaiapuni ma muli o kāna kaʻina hana hoʻomākaukau e hoʻopau ana i nā mea maka petrochemical aloha i ke kaiapuni. ʻO ka waikawa Polylactic (PLA) i kēia manawa kekahi o nā mea biodegradable i hoʻohana nui ʻia, hoʻohiki, a me ke kumukūʻai kūpono.

He aha ka PLA?

Poly (ʻakika lactic), hoʻopōkole ʻia e like mePLA, i ʻike ʻia hoʻi ʻo ka waikawa polylactic,CAS 26100-51-6a i ʻoleCAS 26023-30-3. Hana ʻia ka waikawa Polylactic mai ka biomass ma ke ʻano he mea maka, i hoʻomaka mai ke ʻano a no ke ʻano. ʻO ke kaʻina hana hoʻololi o PLA penei - hiki i nā kemika ke hoʻololi pono i ka starch i unuhi ʻia mai nā mea kanu e like me ka kulina i LA ma o ka hydrolysis a me nā ʻanuʻu fermentation microbial, a hoʻololi hou iā ia i PLA ma o ka polymerization condensation a i ʻole ka polymerization wehe apo, e hoʻokō ana i ka "magic" o ka hoʻololi ʻana i nā mea kanu i nā plastics.

He aha nā ʻano a me nā pōmaikaʻi o ka waikawa polylactic?

Hiki ke palaho loa

Ma lalo o ka hana a nā microorganism a i ʻole nā ​​​​kūlana composting, hiki ke hoʻohaʻahaʻa loa ʻia i CO2 a me H2O, a hiki i ka helu biodegradation pili ke piʻi ma luna o 90% ma hope o 180 mau lā.

Nā waiwai antibacterial kūlohelohe

Loaʻa iā ia kekahi mana pale iā Candida albicans, Escherichia coli a me Staphylococcus aureus.

Hoʻohālikelike Bio

ʻO ka waikawa lactic maka he mea kūlohelohe ia i loko o ke kino o ke kanaka, a ʻo PLA kahi mea implant kanaka i hōʻoia ʻia e ka FDA, i hoʻohana nui ʻia ma ke kahua lapaʻau.

Ka hana maikaʻi loa

ʻO ka mahana hana PLA he 170 ~ 230 ℃, a hiki ke hoʻohana ʻia no ka hoʻoheheʻe ʻana i nā ʻano hana like ʻole e like me ka extrusion, stretching, spinning, blowing film, injection molding, blow molding, a me ka blistering.

ʻAʻole hiki ke lapalapa

ʻAʻole hiki ke lapalapa, me ka helu oxygen hope loa ma kahi o 21%, ka hana uahi haʻahaʻa, a ʻaʻohe uahi ʻeleʻele.

Nā mea maka hou

Loaʻa ka mea maka o ka PLA mai nā kumu kalapona biomass i hoʻokumu ʻia e ka photosynthesis.

Me ka hoʻonui mālie ʻana o ka ʻike o ka poʻe i ke kaiapuni, e pani nā plastik biodegradable i nā mea maka petrochemical ʻaʻole aloha i ke kaiapuni. Ke alo nei i ka hoʻonui ʻia ʻana o ka ʻae ʻia ʻana o nā plastik biodegradable e ka lehulehu,PLAe hoʻokō i ke komo ʻana i nā kahua ma lalo o ka wai i ka wā e hiki mai ana.