Puke ʻai meaʻai mai ka ʻōpala lāʻau a me nā pūpū pāpaʻi

ʻO ka cellulose a me ka chitin, nā biopolymers maʻamau ʻelua ma ka honua, loaʻa i nā pūpū mea kanu a me nā crustacean (ma waena o nā wahi ʻē aʻe), kēlā me kēia.Ua noʻonoʻo ka poʻe ʻepekema ma Georgia Institute of Technology i kahi ala e hoʻohui ai i nā mea ʻelua e hana i ka ʻeke meaʻai compostable e like me nā ʻeke plastik.

Alakaʻi ʻia e Prof. J. Carson Meredith, ke hana nei ka hui noiʻi ma ka hoʻopaneʻe ʻana i nā nanocrystals cellulose i unuhi ʻia mai ka lāʻau a me ka chitin nanofibers i unuhi ʻia mai nā pūpū pāpaʻi i loko o ka wai, a laila e pīpī i ka hopena i kahi bioavailable i nā papa hoʻololi.Hana ʻia kēia mea ma kahi substrate polymer i hoʻohana hou ʻia - kahi hui maikaʻi o nā nanocrystals cellulose i hoʻopiʻi maikaʻi ʻia a me nā nanofibers chitin i hoʻopiʻi maikaʻi ʻia.

Ke hoʻomaloʻo ʻia a ʻili ʻia mai ka substrate, ʻoi aku ka kiʻekiʻe o ke kiʻi ʻoniʻoni alohilohi, ikaika a me ka compostability.ʻO ka mea hou aʻe, hiki iā ia ke ʻoi aku ma mua o ke kāʻei ʻilika maʻamau non-compostable i ka mālama ʻana i ka meaʻai mai ka pōʻino."ʻO kā mākou pae mua i hoʻohālikelike ʻia i kēia mea ʻo PET a i ʻole polyethylene terephthalate, ʻo ia kekahi o nā mea waiwai maʻamau o ka petroleum āu e ʻike ai i loko o nā mīkini kūʻai aku a me nā mea like," wahi a Meredith."Ke hōʻike nei kā mākou mea i kahi hōʻemi he 67 pakeneka o ka oxygen permeability i hoʻohālikelike ʻia i kekahi ʻano o PET, ʻo ia ka mea hiki ke mālama i ka meaʻai lōʻihi."

ʻO ka emi ʻana o ka permeability ma muli o ke ʻano o nā nanocrystals."He mea paʻakikī i ka mole kinoea ke komo i loko o kahi aniani paʻa no ka mea pono e hoʻopau i ka hana aniani," wahi a Meredith."Ma ka ʻaoʻao ʻē aʻe, ʻo nā mea e like me PET ka nui o ka amorphous a i ʻole ka kristal, no laila ʻoi aku ka nui o nā ala no nā molekele kinoea liʻiliʻi e ʻike maʻalahi."

ʻO ka hope loa, ʻaʻole hiki i nā kiʻiʻoniʻoni biopolymer ke hoʻololi wale i nā kiʻi ʻoniʻoni i kēia manawa ʻaʻole biodegrade i kēia manawa ke hoʻolei ʻia, akā hoʻohana pū kekahi i nā ʻōpala lāʻau i hana ʻia i loko o nā hale hana a me nā pūpū pāpaʻi i hoʻolei ʻia e ka ʻoihana iʻa.Eia naʻe, a hiki i kēlā manawa, pono e hoʻemi ʻia ke kumukūʻai o ka hana ʻana i nā mea ma kahi ʻoihana.