Starch ether ma cellulose ether o ituaiga uma ia o ether derivatives o loʻo faʻaaogaina i pisinisi eseese, aemaise lava i le fausiaina ma le ufiufi.A'o latou fefa'asoaa'i nisi o mea e tutusa ai i le tulaga o le vai-soluble polymers ma mafiafia ma fa'amautu meatotino, o lo'o i ai eseesega fa'avae i le va oi latou, fa'amuamua i lo latou puna ma le fa'asologa o vaila'au.
Pati Eteru:
1. Punavai:
- Origin Natural: O le starch ether e maua mai le masoa, o se carbohydrate e maua i laau.O le masoa e masani ona maua mai i fuala'au pei o sana, pateta, po'o manioka.
2. Fa'asologa o vaila'au:
- Polymer Composition: O le masoa o se polysaccharide e fausia i iunite kulukose e fesoʻotaʻi i fusi glycosidic.Ethers starch o mea na maua mai i le masoa, lea e suitulaga ai vaega hydroxyl i luga o le mole mole masoa i vaega eter.
3. Talosaga:
- Alamanuia Faufale: E masani ona faʻaaogaina ethers starch i fale faufale e fai ma faʻaopoopoga i oloa faʻavae gypsum, mortars, ma mea faʻavae sima.Latou te saofagā i le faʻaleleia atili o galuega, taofi vai, ma pipii.
4. Ituaiga masani:
- Hydroxyethyl Starch (HES): O se tasi ituaiga masani ole starch eter ole hydroxyethyl starch, lea e fa'afeiloa'i ai vaega ole hydroxyethyl e fa'aleleia ai le fausaga ole masoa.
Cellulose Eteru:
1. Punavai:
- Origin Natural: E maua mai le cellulose ether mai le cellulose, o se polymer masani e maua i totonu o puipui sela o laau.O se vaega tele o puipui sela o la'au ma e maua mai i puna e pei o le pulu laupapa po'o le cotton.
2. Fa'asologa o vaila'au:
- Polymer Composition: Cellulose o se polymer linear e aofia ai iunite kulukose e fesoʻotaʻi i fusi β-1,4-glycosidic.Cellulose ethers o mea na maua mai i le cellulose, lea o vaega hydroxyl i luga o le mole mole cellulose e suia ma vaega ether.
3. Talosaga:
- Alamanuia Faufale: O le cellulose ethers o loʻo maua le faʻaogaina lautele i fale faufale, e tutusa ma ethers starch.O lo'o fa'aaogaina i oloa fa'avae sima, fa'apipi'i ta'ele, ma sima e fa'aleleia atili ai le fa'atumauina o le vai, fa'aogaina, ma le pipi'i.
4. Ituaiga masani:
- Hydroxyethyl Cellulose (HEC): O se tasi ituaiga masani o le cellulose ether o le hydroxyethyl cellulose, lea e faʻafeiloaʻi ai vaega o le hydroxyethyl e suia ai le fausaga o le cellulose.
- Methyl Cellulose (MC): O le isi ituaiga masani o le methyl cellulose, lea e faʻafeiloaʻi ai vaega methyl.
Eseesega Autu:
1. Punavai:
- O le starch ether e maua mai le masoa, o le carbohydrate e maua i laau.
- Cellulose ether e maua mai le cellulose, o se vaega tele o pa puipui o laau.
2. Fa'asologa o vaila'au:
- O le polymer faavae mo le starch ether o le masoa, o se polysaccharide e fausia i iunite kulukose.
- O le polymer faavae mo le cellulose ether o le cellulose, o se polymer laina e fausia i iunite kulukose.
3. Talosaga:
- O ituaiga uma o ethers o loʻo faʻaaogaina i fale faufale, ae o faʻaoga faʻapitoa ma faʻatulagaga e mafai ona eseese.
4. Ituaiga masani:
- Hydroxyethyl starch (HES) ma le hydroxyethyl cellulose (HEC) o fa'ata'ita'iga ia o mea e maua mai i le ether.
a'o le masoa ether ma le cellulose eter o polymers solu vai e fa'aaogaina e fai ma fa'aopoopoga i fa'aoga eseese, o latou puna, polymer fa'avae, ma fausaga fa'apitoa fa'ama'i e eseese.O nei eseesega e mafai ona a'afia ai a latou fa'atinoga i faiga fa'apitoa ma fa'aoga.
Taimi meli: Ian-06-2024