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 meaho e itseng ea lik'hemik'hale lia fapana. Liphapang tsena li ka ama ts'ebetso ea tsona mekhoeng le lits'ebetsong tse ikhethileng.
Nako ea poso: Jan-06-2024