Iyini i-Starch Ether?

I-starch ether iwuhlobo olushintshiwe lwesitashi, i-carbohydrate etholakala ezitshalweni. Ukuguqulwa kuhilela izinqubo zamakhemikhali ezishintsha ukwakheka kwesitashi, okuholela kumkhiqizo onezinto ezithuthukisiwe noma eziguquliwe. Ama-ether esitashi athola ukusetshenziswa okusabalele ezinhlelweni ezihlukene zezimboni ngenxa yezici zawo ezihlukile. Ezinye izinhlobo ezijwayelekile zama-starch ethers zifaka i-hydroxyethyl isitashi (HES), i-hydroxypropyl starch (HPS), kanye ne-carboxymethyl isitashi (CMS). Nazi izici ezibalulekile ze-starch ethers:

1. Ukuguqulwa Kwekhemikhali:

• I-Hydroxyethyl Isitashi (HES): Ku-HES, amaqembu e-hydroxyethyl ethulwa ku-molecule yesitashi. Lokhu kuguqulwa kuthuthukisa ukuncibilika kwamanzi kwawo futhi kuwenza afanelekele ukusetshenziswa emithini yemithi, njengesandisi sevolumu ye-plasma, nakwezinye izinhlelo zokusebenza.
• I-Hydroxypropyl Starch (HPS): I-HPS ikhiqizwa ngokwethula amaqembu e-hydroxypropyl esakhiweni sesitashi. Lokhu kuguqulwa kuthuthukisa izakhiwo ezifana nokuncibilika kwamanzi nekhono lokwenza ifilimu, kukwenze kube usizo ezimbonini ezifana nokudla, izindwangu, nezokwakha.
• I-Carboxymethyl Starch (CMS): I-CMS idalwe ngokwethula amaqembu e-carboxymethyl kuma-molecule esitashi. Lokhu kuguqulwa kunikeza izici ezifana nokugcinwa kwamanzi okuthuthukisiwe, ukujiya, nokuzinza, okuwenza abe wusizo ezinhlelweni ezifana nezinamatheliso, izindwangu, nemithi.

2. Ukunyibilika kwamanzi:

• Ama-ether esitashi ngokuvamile abonisa ukuncibilika kwamanzi okuthuthukisiwe uma kuqhathaniswa nesitashi somdabu. Lokhu kunyibilika okuthuthukisiwe kunenzuzo ekwakhekeni lapho ukuhlakazeka okusheshayo noma ukuhlakazeka emanzini kudingeka.

3. I-Viscosity kanye ne-Thickening Properties:

• Ama-ether esitashi asebenza njengama-thieners asebenzayo ekwenziweni okuhlukahlukene. Banikela ekwandeni kwe-viscosity, okubalulekile ekusetshenzisweni okunjengama-adhesive, ama-coatings, nemikhiqizo yokudla.

4. Ikhono Lokwenza Ifilimu:

• Amanye ama-ethers esitashi, ikakhulukazi isitashi se-hydroxypropyl, abonisa izici zokwenza ifilimu. Lokhu kubenza bafanelekele izinhlelo zokusebenza lapho kufunwa khona ukwakhiwa kwefilimu elincanyana, eliguquguqukayo, njengasembonini yokudla neyokwenza imithi.

5. Ukuzinzisa kanye Nezakhiwo Ezibophezelayo:

• Ama-ether esitashi avame ukusetshenziswa njengeziqinisi kanye nezibophezelo ekwakhiweni okuhlukahlukene. Basiza ukuthuthukisa ukuzinza kwama-emulsion futhi bafake isandla ekubumbaneni kwemikhiqizo efana namaphilisi emithi.

6. Izicelo Ezinamathelayo:

• Ama-ether esitashi athola ukusetshenziswa ezintweni ezinamathelayo, kokubili embonini yokudla (isb., ezintweni ezithatha indawo ye-gum arabic) nasezintweni ezingezona ezokudla (isb., emaphepheni nasezintweni zokupakisha).

7. Usayizi Wendwangu:

• Embonini yendwangu, ama-ether esitashi asetshenziswa ekuhlanganiseni usayizi ukuze kuthuthukiswe amandla nokushelela kwezintambo ngesikhathi sokuluka.

8. Izicelo Zemithi:

• Ama-ether athile esitashi asetshenziswa ekwenziweni kwemithi. Isibonelo, isitashi se-hydroxyethyl sisetshenziswa njengesandisi sevolumu ye-plasma.

9. Izinto Zokwakha Nezokwakha:

• Ama-ether esitashi, ikakhulukazi isitashi se-hydroxypropyl kanye nesitashi se-carboxymethyl, asetshenziswa embonini yezokwakha, ikakhulukazi ekwenziweni kodaka lwengxube eyomile. Banikela ekwenzeni ngcono ukunamathela, ukusebenza, nokugcinwa kwamanzi.

10. Imboni Yokudla:

11. I-Biodegradability:

12. Ukucatshangelwa kwemvelo:

Kubalulekile ukuqaphela ukuthi izici ezithile kanye nokusetshenziswa kwesitashi ether kungahluka ngokusekelwe ohlotsheni lokuguqulwa kanye nokusetshenziswa okuhlosiwe. Abakhiqizi bahlinzeka ngemininingwane yobuchwepheshe enemininingwane yohlobo ngalunye lwe-ether yesitashi ukuze baqondise abadidiyeli ekukhetheni okuhlukile okufanele kakhulu kwezinhlelo zabo zokusebenza ezithile.