ʻO ka polylactic acid kahi mea biodegradable a ʻo kekahi o nā mea fiber i hoʻohiki ʻia i ke kenekulia 21.Polylactic acid (PLA)ʻAʻole i loko o ke ʻano a koi i ka synthesis artificial. Hoʻopili ʻia ka ʻakika lactic maka mai nā mea kanu e like me ka palaoa, sugar beet, cassava, kulina, a me nā mea kanu kūlohelohe. Hiki ke loaʻa i nā fibers polylactic acid, i ʻike ʻia hoʻi ʻo ka corn fibers ma ka milo ʻana.
ʻO ka hoʻomohala ʻana o nā fiber polylactic acid
Loaʻa ka lactic acid i ka yogurt. Ma hope mai, ua ʻike ka poʻe ʻepekema ʻo ka waika i hana ʻia e ka neʻe ʻana o ka ʻiʻo i loko o nā holoholona a me nā kānaka he lactic acid. ʻO ka mea i hana ʻia a DuPont Corporation (ka mea nāna i hana i ka nylon) ʻo ia ka mea mua i hoʻohana i nā polymers lactic acid e hoʻomākaukau ai i nā mea polymer acid polylactic i loko o ka hale hana.
ʻO ka noiʻi a me ka hoʻomohala ʻana i nā fibers polylactic acid he moʻolelo ma mua o ka hapalua haneli. Ua kūkulu ʻo Cyanamid, kahi hui ʻAmelika, i nā suture hiki ke hoʻopaʻa ʻia i ka polylactic acid i nā makahiki 1960. Ma 1989, hui pū ʻo Zhong Fang a me Shimadzu Manufacturing Institute o Iapana e hoʻomohala i ka fiber polylactic acid maʻemaʻe (LactonTM) a me kāna hui ʻana me nā fibers maoli (Corn FiberTM), i hōʻike ʻia ma 1998 Nagano Winter Games; Ua hoʻomohala ʻo Unijica Corporation o Iapana i ka polylactic acid filament a me ka spunbond nonwoven fabric (TerramacTM) i ka makahiki 2000. ʻO Cargill Dow Polymers (CDP) ma ʻAmelika Hui Pū ʻIa (ʻo NatureWorks i kēia manawa) i hoʻokuʻu i kahi ʻano huahana (IngeoTM) e uhi ana i ka polylactic acid resins, fibers, a me nā kiʻiʻoniʻoni i ka makahiki 2003, a me nā kiʻiʻoniʻoni i hana ʻole ʻia ʻo IngoTM ma 2003, a me nā kiʻiʻoniʻoni i hana ʻole ʻia ʻo IngoTM. nā lole no ka hoʻohana ʻana i nā kula e like me nā kaʻa, nā lole home, a me ka maʻemaʻe.
ʻO ke kaʻina hana a me ka hoʻohana ʻana i nā fiber polylactic acid
I kēia manawa, hana ʻia nā lole lole PLA non-woven mai ke kiʻekiʻe optical clean L-polylactic acid (PLLA) ma ke ʻano he maka, me ka hoʻohana ʻana i kona crystallinity kiʻekiʻe a me nā hiʻohiʻona orientation, a hoʻomākaukau ʻia ma o nā kaʻina wili like ʻole (melt spinning, wili pulu, wili maloʻo, wili pulu maloʻo, wili electrostatic, etc.). Ma waena o lākou, hiki ke hoʻohana ʻia nā fibers spun polylactic acid (lōʻihi lōʻihi, pōkole pōkole) i nā ʻano lole, nā lole home, a me nā mea ʻē aʻe. Ma hope o ka hoʻololi kūpono, hiki i nā fibers polylactic acid ke hoʻokō i ka pale ahi maikaʻi (hoʻopau iā ia iho) a me nā waiwai antibacterial kūlohelohe. Eia nō naʻe, loaʻa i ka melt spun PLA fiber kahi lumi no ka hoʻomaikaʻi ʻana i ka ikaika mechanical, ke kūpaʻa kiʻekiʻe o ke ana wela, ke kūpaʻa a me ke kūpaʻa ʻelemakule.
ʻO ka wili pulu, ka wili maloʻo, ka wili pulu maloʻo, a me ka electrospinning o nā fibers polylactic acid (membranes) i hoʻohana nui ʻia i ka māla biomedical. Loaʻa i nā huahana ʻelele nā suture hiki ke hoʻopaʻa ʻia i ka ikaika kiʻekiʻe, nā mea lawe lāʻau lapaʻau, nā membrane anti adhesion, ʻili kūlohelohe, nā ʻenehana ʻenekinia scaffolds, etc.
Me ka piʻi nui ʻana o nā lole i ulana ʻole ʻia i ka lāʻau lapaʻau, ka maʻemaʻe, ka kānana, ka hoʻonaninani a me nā ʻano ʻē aʻe, ua lilo nā polylactic acid non-woven fabrics i kekahi o ka noiʻi a me ka hoʻomohala ʻana.
I ka makahiki 1990, ua aʻo mua ke Kulanui o Tennessee ma ʻAmelika Hui Pū ʻIa i ka polylactic acid spunbond a hoʻoheheʻe i nā lole i ulana ʻole ʻia. Ua hoʻomohala ʻo Zhongfang o Iapana i nā lole spunbond nonwoven polylactic acid no ka hoʻohana ʻana i ka mahiʻai, ʻoiai ʻo ka hui Fibreweb o Farani i kūkulu i ka polylactic acid spunbond, hoʻoheheʻe ʻia i nā lole ʻaʻole i ulana ʻia, a me nā hale hoʻohuihui multi-layer (DepositaTM). Ma waena o lākou, hāʻawi nui ka spunbond nonwoven fabric i ke kākoʻo mechanical, ʻoiai ʻo ka hoʻoheheʻe ʻana i ka papa lole nonwoven a me ka spunbond nonwoven layer e hoʻolako pū i ka pale, adsorption, kānana, a me nā hopena insulation.
ʻO ke Kulanui ʻo Tongji Domestic, Shanghai Tongjieliang Biomaterials Co., Ltd., Hengtian Changjiang Biomaterials Co., Ltd. a me nā ʻāpana ʻē aʻe i hoʻomohala maikaʻi i nā lole nonwoven e like me spun viscose, spunlaced, hot rolled, hot air, etc. nā napkin a me nā diapers, a me ka pale maka, nā ʻeke kī, nā mea kānana ea a me ka wai a me nā huahana ʻē aʻe.
Ua hoʻolaha nui ʻia ka polylactic acid fiber a hoʻohana ʻia i loko o nā kaʻa kaʻa, nā puʻupuʻu cigarette, a me nā wahi ʻē aʻe ma muli o kona kumu kūlohelohe, biodegradability, a me ke aloha kaiapuni.
ʻO nā hiʻohiʻona o nā fiber polylactic acid
ʻO kekahi o nā mea maikaʻi loa o ka polylactic acid fibers ko lākou hiki ke biodegrade a komo i loko o ke kino. Ma lalo o nā kūlana composting maʻamau, pono e ana ʻia ka biodegradability, a ʻo nā huahana degradation he wai a me carbon dioxide. ʻO nā fibers polylactic acid maʻamau e hydrolyse mālie a paʻakikī paha ke ʻike i ka hoʻohana maʻamau a i ʻole ka nui o nā kaiapuni kūlohelohe. No ka laʻana, inā kanu ʻia i loko o ka lepo maoli no hoʻokahi makahiki, ʻaʻole ia e hoʻohaʻahaʻa, akā ma lalo o nā kūlana composting mahana maʻamau, hoʻohaʻahaʻa ia no kahi pule.
ʻO ka hoʻohaʻahaʻa a me ka absorption o nā fibers polylactic acid i loko o vivo e hoʻopilikia nui ʻia e ko lākou crystallinity. Ua hōʻike ʻia nā hoʻokolohua hoʻāʻo ʻana i loko o ka vitro degradation kiʻekiʻe crystallinity polylactic acid fibers e mālama mau i ko lākou ʻano a kokoke i 80% ikaika ma hope o 5.3 mau makahiki, a hiki ke lawe i 40-50 mau makahiki e hoʻohaʻahaʻa loa.
ʻO ka hana hou a me ka hoʻonui ʻana i nā fibers polylactic acid
Ma ke ʻano he ʻano fiber kemika i kūkulu ʻia a hana ʻia no ka hapalua haneli, ʻoi aku ka liʻiliʻi o ka hoʻohana maoli ʻana i ka fiber polylactic acid ma mua o hoʻokahi kaukani o ka fiber polyester. ʻOiai ke kūlana mua ke kumu kūʻai, ʻaʻole hiki ke mālama ʻia kāna hana. ʻO ka hoʻololi ʻana he ala e hoʻomohala ai i nā fibers polylactic acid.
ʻO Kina ka mea hana nui a me ka mea kūʻai aku i nā fibers kemika, a i nā makahiki i hala iho nei, ua hāʻawi mua ʻia ka noiʻi ʻana i nā fibers polylactic acid i hoʻololi ʻia. Hiki ke hoʻohui ʻia ka polylactic acid fibers me ka "cotton, linen, and wool" maʻamau e hana i nā lole i ulana ʻia a me nā lole i ulana ʻia me ka hana hoʻokō, a me nā mea kemika ʻē aʻe e like me spandex a me PTT e hana i nā lole, e hōʻike ana i ka ʻili maikaʻi, hanu, a me nā hopena wicking mau. Ua hoʻolaha ʻia lākou ma ke kahua o nā lole lole.
ʻO Dongguan Liansheng Nonwoven Fabric Co., Ltd., He mea hana i nā lole i ulanaʻoleʻia a me nā lole i ulanaʻoleʻia, pono iāʻoe ke hilinaʻi!
Ka manawa hoʻouna: Jun-11-2024