Starch ether le cellulose ether ke mefuta e 'meli ea lihlahisoa tsa ether tse sebelisoang liindastering tse fapaneng, haholo-holo kahong le ho koahela.Le hoja li arolelana lintho tse ling tse tšoanang tabeng ea ho ba li-polymers tse qhibilihang ka metsing tse nang le thepa e teteaneng le e tsitsitseng, ho na le phapang ea bohlokoa pakeng tsa tsona, haholo-holo mohloling oa tsona le sebopeho sa lik'hemik'hale.
Ether ea starch:
1. Mohloli:
- Tšimoloho ea Tlhaho: Starch ether e tsoa ho starch, e leng carbohydrate e fumanoang limela.Hangata starch e ntšoa lijalong tse kang poone, litapole kapa cassava.
2. Sebopeho sa Lik'hemik'hale:
- Sebopeho sa Polymer: Starch ke polysaccharide e entsoeng ka likaroloana tsa tsoekere tse hokahantsoeng ke li-bond tsa glycosidic.Li-starch ethers ke li-derivatives tse fetotsoeng tsa starch, moo lihlopha tsa hydroxyl tse holim'a molek'hule ea starch li nkeloang sebaka ke lihlopha tsa ether.
3. Likopo:
- Indasteri ea Kaho: Li-starch ethers li sebelisoa hangata indastering ea kaho e le li-additives lihlahisoa tse thehiloeng ho gypsum, lirekere le lisebelisoa tse thehiloeng ho samente.Li kenya letsoho ho ntlafatseng ts'ebetso, 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.
Cellulose Ether:
1. Mohloli:
- Tšimoloho ea Tlhaho: Cellulose ether e tsoa ho cellulose, polymer ea tlhaho e fumanoang marakong a lisele tsa limela.Ke karolo e kholo ea marako a lisele tsa semela 'me e ntšoa mehloling e kang makhasi a lehong kapa k'hothone.
2. Sebopeho sa Lik'hemik'hale:
- Sebopeho sa Polymer: Cellulose ke polymer e melang e nang le likaroloana tsa tsoekere tse hokahantsoeng ke β-1,4-glycosidic bond.Li-cellulose ethers ke li-derivatives tsa selulose, moo lihlopha tsa hydroxyl ka molek'hule ea cellulose li fetoloang ka lihlopha tsa ether.
3. Likopo:
- Indasteri ea Kaho: Li-cellulose ethers li fumana ts'ebeliso e atileng indastering ea kaho, joalo ka li-starch ethers.Li sebelisoa lihlahisoa tse entsoeng ka samente, likhomaretsi tsa lithaele, le lirekere ho ntlafatsa ho boloka metsi, ho sebetsa le ho khomarela.
4. Mefuta e Tloaelehileng:
- Hydroxyethyl Cellulose (HEC): Mofuta o mong o tloaelehileng oa cellulose ether 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 tse ka Sehloohong:
1. Mohloli:
- Starch ether e tsoa ho starch, carbohydrate e fumanoang limela.
- Cellulose ether e tsoa ho cellulose, karolo e kholo ea marako a lisele tsa semela.
2. Sebopeho sa Lik'hemik'hale:
- Polymer ea motheo bakeng sa starch ether ke starch, polysaccharide e entsoeng ka liyuniti tsa tsoekere.
- Polima ea motheo bakeng sa cellulose ether ke cellulose, polymer e melang e entsoeng ka likarolo tsa tsoekere.
3. Likopo:
- Mefuta e 'meli ea li-ether e sebelisoa indastering ea kaho, empa lisebelisoa tse khethehileng le libopeho li ka fapana.
4. Mefuta e Tloaelehileng:
- Hydroxyethyl starch (HES) le hydroxyethyl cellulose (HEC) ke mehlala ea lihlahisoa tsena tsa ether.
ha starch ether le cellulose ether 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 libopeho tse ikhethileng tsa lik'hemik'hale li fapana.Liphapang tsena li ka ama ts'ebetso ea tsona mekhoeng le lits'ebetsong tse ikhethileng.
Nako ea poso: Jan-06-2024