Starch Ether ke eng?

Starch ether ke mofuta o fetotsoeng oa starch, carbohydrate e tsoang limela. Phetoho e kenyelletsa lits'ebetso tsa lik'hemik'hale tse fetolang sebopeho sa starch, se hlahisang sehlahisoa se nang le thepa e ntlafalitsoeng kapa e fetotsoeng. Li-starch ethers li fumana tšebeliso e atileng lits'ebetsong tse fapaneng tsa indasteri ka lebaka la litšobotsi tsa tsona tse ikhethang. Mefuta e meng e tloaelehileng ea starch ether e kenyelletsa hydroxyethyl starch (HES), hydroxypropyl starch (HPS), le carboxymethyl starch (CMS). Mona ke lintlha tsa bohlokoa tsa starch ethers:

1. Phetoho ea Lik'hemik'hale:

• Hydroxyethyl Starch (HES): Ho HES, lihlopha tsa hydroxyethyl li hlahisoa ho molek'hule ea starch. Phetoho ena e ntlafatsa ho qhibiliha ha eona ha metsi 'me e etsa hore e tšoanelehe ho sebelisoa meriana, e le sesebelisoa sa plasma volume expander, le lits'ebetsong tse ling.
• Hydroxypropyl Starch (HPS): HPS e hlahisoa ka ho hlahisa lihlopha tsa hydroxypropyl ho sebopeho sa starch. Phetoho ena e ntlafatsa thepa e kang ho qhibiliha ha metsi le bokhoni ba ho etsa lifilimi, ho etsa hore e be molemo ho indasteri e kang lijo, masela le kaho.
• Carboxymethyl Starch (CMS): CMS e entsoe ka ho hlahisa lihlopha tsa carboxymethyl ho limolek'hule tsa starch. Phetoho ena e fana ka thepa e kang ho boloka metsi ho ntlafalitsoeng, ho teteana le botsitso, ho etsa hore e be ea bohlokoa lits'ebetsong tse kang likhomaretsi, masela le litlhare.

2. Ho qhibiliha ha Metsi:

• Li-starch ethers hangata li bonts'a ho qhibiliha ha metsi ho ntlafetseng ha ho bapisoa le starch ea tlhaho. Sollubility ena e matlafalitsoeng e na le molemo mekhoeng ea ho qhibiliha ha metsi kapa ho qhalana ka potlako.

3. Viscosity le Thickening Thepa:

• Li-ether tsa starch li sebetsa e le li-thickeners tse sebetsang mekhoeng e fapaneng. Li kenya letsoho ho eketseheng ha viscosity, e leng ea bohlokoa lits'ebetsong tse kang li-adhesives, coatings, le lihlahisoa tsa lijo.

4. Bokhoni ba ho Etsa Lifilimi:

• Li-ether tse ling tsa starch, haholo-holo hydroxypropyl starch, li bonts'a thepa ea ho etsa lifilimi. Sena se etsa hore li tšoanelehe bakeng sa lits'ebetso moo ho lakatsoang filimi e tšesaane, e tenyetsehang, joalo ka liindasteri tsa lijo le tsa meriana.

5. Ho tsitsisa le ho Tlama Thepa:

• Hangata li-ethers tsa starch li sebelisoa e le li-stabilizers le li-binders ka mefuta e sa tšoaneng ea metsoako. Li thusa ho ntlafatsa botsitso ba li-emulsions le ho kenya letsoho ho kopanngoa ha lihlahisoa tse kang matlapa a meriana.

6. Lisebelisoa tsa Sekhomaretsi:

• Li-starch ethers li fumana tšebeliso ea likhomaretsi, indastering ea lijo (mohlala, li-substitutes tsa marenene arabic) le lits'ebetso tseo e seng tsa lijo (mohlala, lipampiri le liphutheloana tsa liphutheloana).

7. Tekanyo ea Lesela:

• Indastering ea masela, li-starch ethers li sebelisoa ha ho etsoa boholo ba likhoele ho ntlafatsa matla le boreleli ba likhoele nakong ea ho loha.

8. Lisebelisoa tsa Meriana:

• Li-ether tse ling tsa starch li sebelisoa mefuteng ea meriana. Ka mohlala, hydroxyethyl starch e sebelisoa e le plasma volume expander.

9. Lisebelisoa tsa Kaho le Kaho:

• Li-ethers tsa starch, haholo-holo hydroxypropyl starch le carboxymethyl starch, li sebelisoa indastering ea kaho, haholo-holo mefuteng e omileng ea seretse. Li kenya letsoho ntlafatsong ea ho khomarela, ho sebetsa le ho boloka metsi.

10. Indasteri ea Lijo:

11. Biodegradability:

12. Litlhokomelo tsa Tikoloho:

Ho bohlokoa ho hlokomela hore thepa le ts'ebeliso ea li-starch ethers li ka fapana ho latela mofuta oa phetoho le ts'ebeliso e reriloeng. Baetsi ba fana ka lintlha tse qaqileng tsa tekheniki bakeng sa mofuta o mong le o mong oa starch ether ho tataisa baetsi ba lihlahisoa ha ba khetha mofuta o loketseng bakeng sa lits'ebetso tsa bona tse ikhethileng.