I totonu o le malo o mea faʻapipiʻi fale gaosi oloa, o le sailiga mo mea e ofoina atu le maualuga o le faʻatinoga, faʻaleleia o le siosiomaga, ma le tau-lelei e sili ona taua. Faatasi ai ma mea eseese na suʻesuʻeina, ua tulaʻi mai le ethers starch o se sao taua i le faʻaleleia atili o mea faʻapipiʻi. Starch ethers, e maua mai le masoa faanatura, e faia suiga fa'a-kemikolo e fa'aleleia atili ai a latou mea fa'aletino ma vaila'au, ma fa'amalieina ai mo le tele o fa'aoga tau pisinisi.
Malamalama i Starch Ethers
Masoa, o se polysaccharide e fausia i iunite kulukose, ose punaoa faʻafouina ma faʻaogaina faʻaola faʻaaogaina lautele i pisinisi eseese. Peita'i, e iai ni tapula'a fa'atapula'a o le masoa fa'alenatura, e pei o le ma'ale'ale i le susū, fa'atapula'aina le solu i le vai malulu, ma le matele e toe fa'afo'i (recrystallize), e fa'atapula'aina lona fa'aogaina i mea fa'apipi'i. Ina ia foia nei faaletonu, o le masoa ua suia i kemikolo e maua ai le ethers starch.
O ethers masoa e fausia e ala i le tuʻuina atu o vaega ether (alkyl poʻo hydroxyalkyl vaega) i totonu ole mole mole. O lenei suiga e faʻaleleia ai le solubility, faʻamautu, ma mea faʻapipiʻi ata o le masoa, e sili atu ona talafeagai mo le faʻaogaina i mea faʻapipiʻi. O ituaiga masani o ethers masoa e aofia ai le hydroxyethyl starch (HES), hydroxypropyl starch (HPS), ma le carboxymethyl starch (CMS).
Fa'asologa o Eteru masoa
O le tu'ufa'atasiga o ethers masoa e aofia ai se fa'asologa o gaioiga fa'a-kemikolo lea e togafitia ai le masoa fa'aletino i vaila'au eterifying. Mo se faʻataʻitaʻiga, o le hydroxypropyl starch e gaosia e ala i le taliina o le masoa ma le propylene oxide, ae o le carboxymethyl starch e faʻapipiʻiina e faʻaaoga ai le monochloroacetic acid. O le tikeri o le suitulaga (DS), o loʻo faʻaalia ai le aofaʻi o vaega o le hydroxyl i luga o le mole mole masoa ua suia e vaega o le ether, e taua tele le sao i le fuafuaina o meatotino o le ether starch e maua mai.
Fa'alelei i Meatotino Fa'apipi'i
Starch ethers e aumaia ai le tele o faʻaleleia atili i mea faʻapipiʻi o oloa gaosi oloa:
Faʻateleina le Solubility ma le Viscosity Control: O le faʻaofiina o vaega o le ether e faʻaleleia ai le solubility vai o ethers starch, faʻatagaina i latou e faʻamavae i le malulu ma le vai vevela. O lenei mea totino e taua tele mo mea faʻapipiʻi aua e faʻamautinoa le faʻaogaina ma le tutusa. E le gata i lea, o le viscosity o fofo ether starch e mafai ona pulea e ala i le fetuutuunai o le tikeri o le suitulaga, e mafai ai ona faʻapipiʻiina mea faʻapipiʻi ma mea faʻapitoa rheological.
Faʻaleleia le Faʻapipiʻi ma le Fesoʻotaʻi: E sili atu le pipii o ethers starch i mea eseese, e aofia ai pepa, laupapa, ie, ma palasitika. E mafua lenei mea ona o le faʻateleina o fegalegaleaiga i le va o molelaʻau masoa ua suia ma luga ole substrate. E le gata i lea, o le malosi faʻatasi o le ata faʻapipiʻi e faʻaleleia ona o le faʻavaeina o se fesoʻotaʻiga polymer sili atu toniga ma fetuutuunai.
Faʻaleleia le Mau ma le Teteʻe: O mea faʻapipiʻi faʻapipiʻiina i ethers masoa e faʻaalia ai le faʻaleleia atili o le mautu i lalo o tulaga eseese o le siosiomaga. Latou te fa'aalia le tete'e atu i le susū, ose fa'amanuiaga sili lea nai lo mea fa'apipi'i masoa e masani ona vaivai i tulaga susū. O le mea lea e fa'aogaina ai fa'apipi'i fa'atatau o le ether starch e talafeagai mo fa'aoga e fa'apopoleina ai le susu.
Biodegradability ma Sustainability: O se tasi o mea sili ona taua o ethers starch o lo latou biodegradability. E le pei o mea faʻapipiʻi faʻapipiʻi e maua mai i petrochemicals, o mea faʻapipiʻi ether-based starch e faʻafeiloaʻi le siʻosiʻomaga ma faʻaleagaina faʻalenatura, faʻaitiitia ai le tulaga o le siʻosiʻomaga. E fetaui lelei ma le faʻateleina o manaʻoga mo fofo faʻapipiʻi gafataulimaina ma lanu meamata i pisinisi eseese.
Talosaga Alamanuia
O le faʻaleleia atili o meatotino o ethers starch ua taʻitaʻia ai lo latou faʻaaogaina lautele i faʻalapotopotoga faʻapisinisi eseese:
Alamanuia Pepa ma Fa'apipi'i: O mea fa'apipi'i fa'avae ether starch e fa'aaogaina tele i fale pepa ma afifiina ona o lo latou malosi fa'afeso'ota'i ma le biodegradability. E faʻaaogaina mo le gaosiga o laupapa faʻapipiʻi, lamination pepa, ma o se sui faʻapipiʻi i oloa pepa.
Faiga Fafie ma Meaafale: I totonu o le fafie ma meaafale, o mea faʻapipiʻi ether starch e maua ai fusi malosi ma umi. O lo latou fa'aleleia atili o le susū e sili ona aoga mo le fa'apipi'iina o vaega laupapa e ono fa'aalia i tulaga susū eseese.
I'eila: Ethers masoa o lo'o fa'aaogaina i le fale gaosi oloa mo le fa'avasegaina ma le fa'aumaina o talosaga. O mea faʻapipiʻi faʻaleleia e faʻamautinoa ai o loʻo faʻapipiʻi lelei alava, faʻaleleia atili le lelei ma le tumau o oloa ie mulimuli.
Fausiaina: I le vaega faufale, o mea faʻapipiʻi faʻavae ether e faʻaaogaina mo puipui puipui, fola, ma faʻapipiʻi i le sima ma le sima. O lo latou gafatia e faʻaleleia ai mea faʻapipiʻi o mea faufale e fesoasoani i le faʻatulagaina o le faʻamaoni ma le umi o fale.
Alamanuia Mea'ai: E fa'aoga fo'i mea'ai masoa e fa'afou i le alamanuia o mea'ai e pei o mea fa'apipi'i ma mea mafiafia i oloa e pei o pa'u, mea'ai fa'apipi'i, ma mea fa'apipi'i taumafa. O lo latou saogalemu ma le biodegradability e talafeagai ai mo le fa'aogaina i mea'ai e feso'ota'i ma mea'ai.
Faamoemoega ma Luitau i le Lumanai
O le lumanaʻi o ethers starch i totonu o mea faʻapipiʻi faʻapisinisi e foliga mai e manuia, faʻamalosia e le manaʻoga faifaipea mo mea faʻatumauina ma le alualu i luma i metotia faʻaleleia o vailaʻau. O su'esu'ega o lo'o fa'atatau ile atina'eina o ituaiga fou ole masoa ethers fa'atasi ma mea fa'apitoa mo fa'aoga fa'apitoa. O fa'afouga i metotia fa'aopoopo e fa'atatau i le fa'aleleia atili o le fa'agasologa o suiga, fa'aitiitia tau, ma fa'aitiitia le a'afiaga o le si'osi'omaga.
Peitaʻi, e iai foʻi luʻi e ao ona foʻia. O le fa'atinoga o mea fa'apipi'i fa'avae eter e mafai ona a'afia i le puna ma le lelei o le masoa masani, lea e fesuisuia'i ma tulaga fa'ato'aga. O le fa'amautinoaina o le tulaga lelei ma le fa'atinoina o le oloa fa'ai'u e mana'omia ai le fa'atonutonuina mataalia o meafaitino ma fa'agaioiga gaosiga. E le gata i lea, e ui o le starch ethers e biodegradable, o le aafiaga atoatoa o le siosiomaga o latou gaosiga ma le lafoaia e tatau ona iloiloina ma le faaeteete ina ia mautinoa e tumau pea i latou o se filifiliga gafatia moni.
Starch ethers ua suia le fanua o mea faʻapipiʻi faʻapisinisi e ala i le ofoina atu o se tuʻufaʻatasiga o le faʻaleleia atili o le faʻatinoga ma le siosiomaga. O lo latou fa'aleleia atili o le solubility, fa'apipi'i, mautu, ma le biodegradability ua avea ai i latou ma mea fa'afiafia e suitulaga i mea fa'apipi'i tu'ufa'atasi. A'o fa'aauau pea ona fa'amuamua e alamanuia le fa'atumauina, o le matafaioi a le ethers starch i fa'apipi'i fa'apipi'i ua fa'atulaga e fa'alautele, fa'aoso i su'esu'ega faifaipea ma fa'atekonolosi. O le lu'itau o lo'o taoto i le fa'asilisiliina o latou gaosiga ma le fa'aogaina e fa'asilisili ai fa'amanuiaga a'o fa'aitiitia so'o se fa'aletonu e ono tula'i mai, fa'amautinoa o lo'o tumau pea le māsa eter ma maatulimanu o vaifofo pipii fa'alelei i le lumana'i.
Taimi meli: Iuni-04-2024