Me ka ulu ʻana o ke kaiāulu kanaka, ke piʻi nei ke koi no nā huahana palaki i ke ola o kēlā me kēia lā o kānaka, e like me nā ʻeke palaki, nā pā palaki, nā pahu ʻaina palaki a pēlā aku. I kēia manawa, ua hoʻonui ka piʻi ʻana o ka ʻoihana lawe meaʻai i ke koi no nā huahana palaki. Ke loaʻa nei hoʻi ka hopena nui o ke koi i ko kākou kaiapuni, no ka mea, he mea ʻino loa nā huahana palaki i ke kaiapuni.
I ke alo o nā pilikia kaiapuni koʻikoʻi e piʻi nei, ua lilo ka ʻimi ʻana i nā koho ʻē aʻe i ka plastic i mea maʻamau ma ka honua holoʻokoʻa. Ma hope o ka noiʻi mau a me ka hoʻomaikaʻi ʻana, ua piʻi mālie nā huahana PLA i ke kahua o ka mōʻaukala. Loaʻa i nā huahana PLA ka hana o ka hōʻino ʻana, hiki ke hōʻino loa ʻia i loko o 90 mau lā ma ka mahana kūpono a me ke kaiapuni. I ka manawa like, he ola lōʻihi hoʻi kona, mālama pono ʻia, hiki ke mālama ʻia ka pā PLA a me ka ipu PLA a me nā huahana ʻē aʻe no ka ʻoi aku ma mua o hoʻokahi makahiki.
Nā Pā a me nā Pahu Biodegradable PLA Mea Ola Hou no ka Hoʻopili ʻana i ka Meaʻai ʻIʻo Hua
He kūpaʻa maikaʻi ka Poly (lactic acid), ka mahana hana 170 ~ 230 ℃, ke kūpaʻa maikaʻi o ka solvent, hiki ke hana ʻia ma nā ʻano like ʻole, e like me ka extrusion, spinning, biaxial stretching, injection blow molding. Ma waho aʻe o ka biodegradable, loaʻa i nā huahana polylactic acid ka biocompatibility maikaʻi, ka ʻōlinolino, ka transparency, ka manaʻo lima a me ke kūpaʻa wela.
ʻO ka waikawa Polylactic (PLA) kahi mea biodegradable hou i hana ʻia mai ka starch i loaʻa mai nā kumuwaiwai mea kanu hou e like me ka maize. Ua loaʻa ka Glucose mai ka starch ma o ka saccharification, a laila ua hoʻomoʻa ʻia ka waikawa lactic me ka maʻemaʻe kiʻekiʻe mai ka glucose a me kekahi mau ʻano, a laila ua synthesized ka waikawa polylactic me kekahi kaumaha molekala e ka synthesis kemika. Loaʻa iā ia ka biodegradability maikaʻi, a hiki ke hoʻohaumia loa ʻia e nā microorganisms ma ke ʻano ma hope o ka hoʻohana ʻana, a laila hoʻopuka i ka carbon dioxide a me ka wai. ʻAʻole ia e hoʻohaumia 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. ʻO ke ʻano hana lapaʻau plastic maʻamau ka puhi ʻana, e hopena ana i ka nui o ke kinoea ʻōmaʻomaʻo i hoʻokuʻu ʻia i ka lewa, ʻoiai ua kanu ʻia ka plastic acid POlylactic i loko o ka lepo, ʻo ke kalapona dioxide pololei i loko o ka mea organik lepo a i ʻole i omo ʻia e nā mea kanu, ʻaʻole e hoʻokuʻu ʻia i ka lewa, ʻaʻole ia e hana i ka hopena ʻōmaʻomaʻo.
He pono kūikawā ko Poly (lactic acid) ma ke kahua o nā mea hana hoʻolei ʻia, nā mea hoʻopili meaʻai a me nā huahana hoʻolei ʻē aʻe no ka mea ʻaʻohe ona ʻino i ke kino o ke kanaka. Hiki ke palaho piha ʻia a hoʻokō i nā koi kiʻekiʻe o ka honua, ʻoiai ka ʻAhahui ʻEulopa, ʻAmelika Hui Pū ʻIa a me Iapana no ka palekana o ke kaiapuni. Eia kekahi, ma hope o ka hoʻomohala ʻenehana, ua hoʻololi ʻia ka mākeke e nā mea PLA, hiki ke lanakila maikaʻi i nā hemahema o ka ʻāpana mua, a ʻo kekahi mau mea e pale aku i ka wela a hiki i ka 120 ℃, hiki ke hoʻohana ʻia e like me nā mea hana umu microwave.
Eia nō naʻe, ma ke ʻano o ka mākeke o kēia manawa, ʻaʻole hiki ke hoʻohālikelike ʻia ka insulation thermal a me ka hiki ke hou o nā huahana PLA e nā huahana palaho ʻē aʻe, akā ʻoi aku ke kiʻekiʻe o ke kumukūʻai o nā huahana PLA ma mua o nā huahana palaho ʻē aʻe. Nui ka poʻe e koho i ka bagasse ma ke ʻano he huahana biodegradable, akā hoʻopili ka bagasse i ka ʻaila, hoʻopili i ka wai, a hoʻopilikia i nā huahana i hoʻopaʻa ʻia. Hiki nō hoʻi i nā pallets bagasse ke lilo i ʻōpala inā ʻaʻole lākou maloʻo.
Ka manawa hoʻouna: Ian-12-2022