Ether ea starch le ether ea cellulose ka bobeli ke mefuta ea li-derivative tsa ether tse sebelisoang liindastering tse fapaneng, haholo-holo kahong le liphahlong. Leha li tšoana ka ho ba li-polymer tse qhibilihang ka metsing tse nang le thepa ea ho teteana le ho tsitsisa, ho na le liphapang tsa motheo lipakeng tsa tsona, haholo-holo mohloling oa tsona le sebopehong sa lik'hemik'hale.
Ether ea Starch:
1. Mohloli:
- Tšimoloho ea Tlhaho: Starch ether e tsoa ho starch, e leng k'habohaedreite e fumanoang limela. Starch hangata e ntšoa lijalong tse kang poone, litapole, kapa cassava.
2. Sebopeho sa Lik'hemik'hale:
- Sebopeho sa Polymer: Starch ke polysaccharide e entsoeng ka diyuniti tsa glucose tse hokahantsweng ke dibonto tsa glycosidic. Li-ether tsa starch ke di-derivatives tse fetotsweng tsa starch, moo dihlopha tsa hydroxyl molek'huleng ya starch di nkeloang sebaka ke dihlopha tsa ether.
3. Litšebeliso:
- Indasteri ea Kaho: Li-starch ether hangata li sebelisoa indastering ea kaho e le lintho tse tlatsetsang lihlahisoa tse thehiloeng ho gypsum, li-mortar le thepa e thehiloeng ho samente. Li tlatsetsa ntlafatsong ea ho sebetsa, ho boloka metsi le ho khomarela.
4. Mefuta e Tloaelehileng:
- Hydroxyethyl Starch (HES): Mofuta o mong o tloaelehileng oa starch ether ke hydroxyethyl starch, moo lihlopha tsa hydroxyethyl li hlahisoang ho fetola sebopeho sa starch.
Ether ea selulose:
1. Mohloli:
- Tšimoloho ea Tlhaho: Cellulose ether e tsoa ho cellulose, e leng polymer ea tlhaho e fumanoang maboteng a sele ea limela. Ke karolo e kholo ea mabota a sele ea limela 'me e ntšoa mehloling e kang pulp ea lehong kapa k'hothone.
2. Sebopeho sa Lik'hemik'hale:
- Sebopeho sa Polymer: Cellulose ke polymer e otlolohileng e nang le diyuniti tsa glucose tse hokahantsweng ke dibonto tsa β-1,4-glycosidic. Di-ether tsa cellulose ke di-derivative tsa cellulose, moo dihlopha tsa hydroxyl molek'huleng ya cellulose di fetolwang ka dihlopha tsa ether.
3. Litšebeliso:
- Indasteri ea Kaho: Li-ether tsa cellulose li sebelisoa haholo indastering ea kaho, joalo ka li-ether tsa starch. Li sebelisoa lihlahisoa tse thehiloeng samenteng, likhomaretsi tsa thaele, le li-mortar ho ntlafatsa ho boloka metsi, ho sebetsa hantle le ho khomarela.
4. Mefuta e Tloaelehileng:
- Hydroxyethyl Cellulose (HEC): Mofuta o mong o tloaelehileng oa ether ea cellulose ke hydroxyethyl cellulose, moo lihlopha tsa hydroxyethyl li hlahisoang ho fetola sebopeho sa cellulose.
- Methyl Cellulose (MC): Mofuta o mong o tloaelehileng ke methyl cellulose, moo lihlopha tsa methyl li hlahisoang teng.
Liphapang tsa Bohlokoa:
1. Mohloli:
- Starch ether e nkuwa ho starch, e leng k'habohaedreite e fumanehang dimeleng.
- Cellulose ether e nkiloe ho cellulose, karolo e kholo ea mabota a sele ea limela.
2. Sebopeho sa Lik'hemik'hale:
- Polima ea motheo bakeng sa starch ether ke starch, polysaccharide e entsoeng ka li-unit tsa glucose.
- Polima ea motheo bakeng sa ether ea cellulose ke cellulose, polymer e otlolohileng e entsoeng ka li-unit tsa glucose.
3. Litšebeliso:
- Mefuta ka bobeli ea li-ether e sebelisoa indastering ea kaho, empa lits'ebetso le mekhoa e itseng e ka fapana.
4. Mefuta e Tloaelehileng:
- Hydroxyethyl starch (HES) le hydroxyethyl cellulose (HEC) ke mehlala ea li-derivatives tsena tsa ether.
ha ether ea starch le ether ea cellulose ka bobeli e le li-polymer tse qhibilihang ka metsing tse sebelisoang e le li-additives lits'ebetsong tse fapaneng, mohloli oa tsona, polymer ea motheo, le meaho e itseng ea lik'hemik'hale lia fapana. Liphapang tsena li ka susumetsa ts'ebetso ea tsona mefuteng le lits'ebetsong tse itseng.
Nako ea poso: Pherekhong-06-2024