Nīnau nā hoaaloha he aha ka ʻokoʻa ma waena o nā ʻeke ʻeke degradable a me nā ʻeke ʻeke hoʻopau piha? ʻAʻole like ia me ka ʻeke ʻeke hoʻoheheʻe ʻia? He hewa ia, aia ka ʻokoʻa ma waena o nā ʻeke ʻeke hoʻoheheʻe ʻia a me nā ʻeke ʻeke hoʻopau piha.
Hiki ke hoʻohaʻahaʻa ʻia nā ʻeke ʻeke degradable, akā ua hoʻokaʻawale ʻia nā ʻeke ʻeke degradable i "degradable" a me "degradable". He aha ka ʻokoʻa? E hoʻomau i ka heluhelu ʻana i ka ʻike liʻiliʻi i hāʻawi ʻia e Anrui.
ʻO nā ʻeke ʻeke hoʻoheheʻe ʻia e pili ana i ka hoʻohui ʻana i kekahi nui o nā mea hoʻohui (e like me ka starch, starch i hoʻololi ʻia a i ʻole cellulose ʻē aʻe, photosensitizers, biodegradants, etc.) Nā ʻeke plastik degradable.
ʻO ka ʻeke ʻeke hoʻoheheʻe piha ʻia ʻo ia hoʻi, ua hoʻohaʻahaʻa loa ʻia ka ʻeke ʻeke plastik i loko o ka wai a me ka carbon dioxide. ʻO ke kumu nui o kēia mea hiki ke hoʻohaʻahaʻa loaʻia mai ka kulina, ka cassava, a pēlā aku i loko o ka lactic acid,ʻo ia ka PLA. ʻO ka polylactic acid (PLA) kahi ʻano hou o ka substrate biological a me nā mea biodegradable hou. Hoʻomaʻamaʻa ʻia ka starch raw material no ka loaʻa ʻana o ka glucose, a laila fermented mai ka glucose a me kekahi mau kānana e hana ai i ka waika lactic maʻemaʻe kiʻekiʻe, a laila synthesized e nā ʻano hana synthesis. molecular weight polylactic acid. Loaʻa iā ia ka biodegradability maikaʻi, a hiki ke hoʻohaʻahaʻa loa ʻia e nā microorganism i ke ʻano ma lalo o nā kūlana kikoʻī ma hope o ka hoʻohana ʻana, i ka hopena 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 he mea pili kaiapuni no nā limahana. I kēia manawa, ʻo ka mea nui bio-based o ka ʻeke pahu piha degradable i haku ʻia me PLA + PBAT, hiki ke hoʻopau piha ʻia i loko o ka wai a me carbon dioxide i loko o 3-6 mau mahina ma lalo o ke ʻano o ka composting (60-70 degere), me ka ʻole. haumia i ke kaiapuni.
No ke aha e hoʻohui ʻia ai ka PBAT? Ua kōkua ʻo Anrui hoʻāʻo ʻenehana kemika i ka mea hoʻoponopono e wehewehe. ʻO ka PBAT kahi copolymer o ka ʻakika adipic, 1,4-butanediol a me ka waikawa terephthalic. He hana kemika ia e hiki ke hoʻopau piha ʻia. ʻO ka polymer aliphatic-aromatic o PBAT he maʻalahi maikaʻi loa a hiki ke hoʻohana ʻia no ka extrusion kiʻiʻoniʻoni, puhi puhi, extrusion coating a me nā kaʻina hana ʻē aʻe. ʻO ke kumu o ka hoʻohui ʻana i ka PLA a me ka PBAT ʻo ia ka hoʻomaikaʻi ʻana i ka paʻakikī, biodegradation a me ka hana hoʻoheheʻe ʻana o PLA. ʻAʻole kūpono ʻo PLA a me PBAT, no laila ke koho ʻana i kahi mea hoʻohālikelike kūpono hiki ke hoʻomaikaʻi nui i ka hana o PLA.
E ʻike ma aneʻi no ka hoʻomaopopo ʻana i ka ʻokoʻa ma waena o nā ʻeke ʻeke hoʻoheheʻe ʻia a me nā ʻeke ʻeke hoʻopau piha.
Hiki ke hoʻohaʻahaʻa ʻia nā ʻeke ʻeke degradable, akā ua hoʻokaʻawale ʻia nā ʻeke ʻeke degradable i "degradable" a me "degradable". ʻO nā ʻeke ʻeke hoʻoheheʻe ʻia e pili ana i ka hoʻohui ʻana i kekahi nui o nā mea hoʻohui (e like me ka starch, starch i hoʻololi ʻia a i ʻole cellulose ʻē aʻe, photosensitizers, biodegradants, etc.) Nā ʻeke plastik degradable. ʻO ka ʻeke ʻeke hoʻoheheʻe piha ʻia ʻo ia hoʻi, ua hoʻohaʻahaʻa loa ʻia ka ʻeke ʻeke plastik i loko o ka wai a me ka carbon dioxide. ʻO ke kumu nui o kēia mea hiki ke hoʻohaʻahaʻa loaʻia mai ka kulina, ka cassava, a pēlā aku i loko o ka lactic acid,ʻo ia ka PLA.
ʻO ka polylactic acid (PLA) kahi ʻano hou o ka substrate biological a me nā mea biodegradable hou. Hoʻomaʻamaʻa ʻia ka starch raw material no ka loaʻa ʻana o ka glucose, a laila fermented mai ka glucose a me kekahi mau kānana e hana ai i ka waika lactic maʻemaʻe kiʻekiʻe, a laila synthesized e nā ʻano hana synthesis. molecular weight polylactic acid. Loaʻa iā ia ka biodegradability maikaʻi, a hiki ke hoʻohaʻahaʻa loa ʻia e nā microorganism i ke ʻano ma lalo o nā kūlana kikoʻī ma hope o ka hoʻohana ʻana, i ka hopena 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 he mea pili kaiapuni no nā limahana.
I kēia manawa, ʻo ka mea nui bio-based o ka ʻeke pahu piha degradable i haku ʻia me PLA + PBAT, hiki ke hoʻopau piha ʻia i loko o ka wai a me carbon dioxide i loko o 3-6 mau mahina ma lalo o ke ʻano o ka composting (60-70 degere), me ka ʻole. haumia i ke kaiapuni. No ke aha e hoʻohui ʻia ai ka PBAT? ʻO nā mea hana hoʻopihapiha hoʻololi ʻoihana ma aneʻi e wehewehe i ka PBAT he copolymer o ka ʻakika adipic, 1,4-butanediol, a me ka waikawa terephthalic, ʻo ia ka momona synthesized kemika i hiki ke biodegradable piha. Aromatic-aromatic polymer, PBAT he maʻalahi loa a hiki ke hoʻohana ʻia no ka extrusion kiʻiʻoniʻoni, puhi puhi, extrusion coating a me nā kaʻina hana ʻē aʻe. ʻO ke kumu o ka hoʻohui ʻana i ka PLA a me ka PBAT ʻo ia ka hoʻomaikaʻi ʻana i ka paʻakikī, biodegradation a me ka hana hoʻoheheʻe ʻana o PLA. ʻAʻole kūpono ʻo PLA a me PBAT, no laila ke koho ʻana i kahi mea hoʻohālikelike kūpono hiki ke hoʻomaikaʻi nui i ka hana o PLA.
Ka manawa hoʻouna: Feb-28-2022