O le polylactic acid o se mea e mafai ona faʻaleagaina ma o se tasi o mea faʻapitoa fiber i le 21st seneturi.Polylactic acid (PLA)e le o iai i le natura ma e manaʻomia le tuʻufaʻatasiga faʻapitoa. O mea mata'utia lactic acid e fa'afefeteina mai fua o fa'ato'aga e pei o le saito, suka beet, manioka, sana, ma fetilaisa fa'aola. Polylactic acid fibers, e ta'ua foi o alava sana, e mafai ona maua i le milo.
Le atinaʻeina o alava polylactic acid
Lactic acid e maua i le yogurt. Mulimuli ane, na iloa e saienitisi o le acid e maua mai i maso o manu ma tagata o le lactic acid. O le mea fou fou a le DuPont Corporation (le nailoni) na muamua fa'aogaina le lactic acid polymers e saunia ai polylactic acid polymer material i totonu o le falesu'esu'e.
Ole su'esu'ega ma le atina'eina ole polylactic acid fiber e iai lona tala'aga e sili atu ile afa seneturi. Cyanamid, o se kamupani Amerika, na atiaʻe suture polylactic acid absorbable i le 1960s. I le 1989, na galulue faatasi Iapani Zhong Fang ma Shimadzu Manufacturing Institute e atiina ae mama spun polylactic acid fiber (LactonTM) ma lona faʻafefiloi ma filo masani (Corn FiberTM), lea na faʻaalia i le 1998 Nagano Winter Games; Unijica Corporation o Iapani na atiina ae le polylactic acid filament ma le spunbond nonwoven fabric (TerramacTM) i le 2000. Cargill Dow Polymers (CDP) i le Iunaite Setete (lea ua taʻua nei NatureWorks) na tatalaina se faasologa o oloa (IngeoTM) e ufiufi polylactic acid resins, fibers, ma ata tifaga i le 2003, ma le laiseneina o le Ingo TM i le 2003, ma le laiseneina o le Ingo TM i Siamani. 'ie mo le fa'aoga i fanua e pei o ta'avale, ie fale, ma le tumama.
Le faʻagasologa ma le faʻaogaina o filo polylactic acid
I le taimi nei, o le PLA ie e le o lalagaina o loʻo faia mai le mama maualuga o le L-polylactic acid (PLLA) e pei o mea mata, faʻaaogaina lona maualuga maualuga ma le faʻatulagaina o uiga, ma saunia e ala i auala eseese (liʻu liusuavai, milo susu, milo mago, vili susu mago, uila eletise, ma isi). Faatasi ai ma i latou, faʻafefeteina filo polylactic acid fibers (filava umi, alava pupuu) e mafai ona faʻaaogaina i fanua o lavalava, fale ie, ma isi. O meafaigaluega gaosiga ma le faʻagasologa e tutusa ma le polyester, ma le lelei o le spinnability ma le faʻatinoina lelei. A mae'a suiga talafeagai, e mafai e alava polylactic acid ona maua le sili atu o le mu (tineia o ia lava) ma mea fa'anatura fa'ama'i. Ae ui i lea, o loʻo i ai pea le avanoa mo le faʻaleleia atili o le malosi faʻainisinia, faʻamautu maualuga o le vevela, maufe ma le matua tetee.
Susū vili, vili mago, vili mago susu, ma electrospinning o polylactic alava acid (membranes) e masani ona faʻaaogaina i le biomedical fanua. O oloa e fai ma sui e aofia ai sutures e mafai ona faʻaaogaina, vailaʻau vailaʻau, paʻu faʻapipiʻi, paʻu faʻapitoa, faʻainisinia faʻainisinia, ma isi.
Faʻatasi ai ma le faʻateleina o le manaʻoga mo le faʻaaogaina o ie e le o lalagaina i fomaʻi, tumama, filtration, teuteuga ma isi fanua, polylactic acid ie e le o lalagaina ua avea foi ma se tasi o nofoaga autu o suʻesuʻega ma atinaʻe.
I le vaitau o le 1990, na su'esu'e muamua ai e le Iunivesite o Tennessee i le Iunaite Setete le polylactic acid spunbond ma fa'afefeteina ie e le'i lalagaina. O Zhongfang a Iapani na fausia mulimuli ane ie polylactic acid spunbond e le'i lalagaina mo fa'ato'aga, a'o le kamupani Fibreweb a Farani na fausia le polylactic acid spunbond, liusuavai ie e le'i lalagaina, ma fausaga fa'apipi'i tele (DepositaTM). Faatasi ai ma ia mea, o le spunbond nonwoven layer e tele lava ina maua ai le lagolago faʻainisinia, ae o le faʻafefeteina le faʻafefe o le ie faʻapipiʻi ma le spunbond nonwoven layer faʻatasi e tuʻuina atu le pa puipui, adsorption, filtration, ma aafiaga insulation.
O le Iunivesite o Tongji i totonu o le atunuu, Shanghai Tongjieliang Biomaterials Co., Ltd., Hengtian Changjiang Biomaterials Co., Ltd. ma isi iunite ua manuia le atiaeina o ie e le i lalagaina e pei o le viscose milo, spunlaced, vevela vevela, ea vevela, ma isi mea i le atinaʻeina o filo tuʻufaʻatasia e pei o oloa e le faʻaaogaina ma sanitary sanitary e le mafai ona faʻaaogaina. solo ma napekini, fa'apea fo'i ufimata, taga lauti, mea e fa'amama ai le ea ma le vai ma isi oloa.
Polylactic acid fiber ua faʻasalalau lautele ma faʻaaogaina i totonu o taʻavale, fusi sikaleti, ma isi vaega ona o lona puna masani, biodegradability, ma le faʻafeiloaʻiga o le siosiomaga.
O uiga o filo polylactic acid
O se tasi o faʻamanuiaga sili ona taʻutaʻua o alava polylactic acid o lo latou gafatia e biodegrade pe faʻafefe i totonu o le tino. I lalo o tulaga masani o le faapalaga, e tatau ona fuaina le biodegradability, ma o mea faʻaleagaina o le vai ma le carbon dioxide. Ole alava polylactic acid masani ole hydrolyse lemu pe faigata foi ona iloa ile fa'aoga masani po'o le tele o siosiomaga masani. Mo se faʻataʻitaʻiga, afai e tanumia i le eleele faʻanatura mo le tausaga, e le faʻaleagaina, ae i lalo o tulaga masani o le vevela, e faʻaleagaina mo le tusa ma le vaiaso.
O le faʻaleagaina ma le faʻaogaina o filo polylactic acid i vivo e matua aʻafia lava i lo latou tioata. Fa'ata'ita'iga i vitro fa'aleagaina fa'ata'ita'iga ua fa'aalia ai o filo polylactic acid maualuga o lo'o tumau pea o latou foliga ma toetoe lava 80% le malosi pe a mae'a le 5.3 tausaga, ma atonu e 40-50 tausaga e fa'aleagaina atoatoa.
Fa'afouga ma le fa'alauteleina o filo polylactic acid
I le avea ai o se vailaʻau vailaʻau na fausia ma gaosia mo le sili atu ma le afa seneturi, o le faʻaaogaina moni o le polylactic acid fiber e itiiti ifo i le tasi afe o polyester fiber. E ui lava o le tau o le tau e tulaga muamua, o lona faatinoga e le mafai ona le amanaiaina. Suiga o se auala e atiaʻe ai alava polylactic acid.
O Saina ose gaosi oloa tele ma fa'atauina alava vaila'au, ma i tausaga talu ai nei, o su'esu'ega i alava polylactic acid ua fa'amuamua ua ave i ai le fa'amuamua. O filo polylactic acid e mafai ona faʻafefiloi ma masani masani "ie, ie, ma fulufulu mamoe" e fai ai masini lalaga ma lalaga ie faʻatasi ai ma le faʻatinoga faʻatasi, faʻapea foʻi ma isi filo vailaʻau e pei o le spandex ma le PTT e fai ai ie, e atagia ai le paʻu faauo, manava, ma le susu o aʻafiaga. Ua fa'alauiloa i latou i le tulaga o ie la'ei.
Dongguan Liansheng Nonwoven Fabric Co., Ltd., o se gaosiga o ie e le faʻaofuofu ma ie e le faʻapipiʻiina, e agavaa mo lou faʻatuatuaina!
Taimi meli: Iuni-11-2024