Yintoni iEtere yesitatshi?

I-starch ether luhlobo olulungisiweyo lwesitashi, i-carbohydrate ephuma kwizityalo. Ukuguqulwa kubandakanya iinkqubo zeekhemikhali eziguqula isakhiwo sesitashi, okubangelwa imveliso eneempawu eziphuculweyo okanye eziguqulwayo. Isitatshi ethers zifumana ukusetyenziswa ngokubanzi kwimizi-mveliso eyahlukeneyo ngenxa yeempawu zabo ezizodwa. Ezinye iintlobo eziqhelekileyo ze-starch ethers ziquka i-hydroxyethyl starch (HES), i-hydroxypropyl starch (HPS), kunye ne-carboxymethyl starch (CMS). Nantsi imiba ephambili yesitatshi ethers:

1. Ukuguqulwa kwemichiza:

• I-Hydroxyethyl Starch (HES): Kwi-HES, amaqela e-hydroxyethyl aziswa kwi-molecule ye-starch. Olu hlengahlengiso luphucula ukunyibilika kwayo kwamanzi kwaye luyenze ilungele ukusetyenziswa kumayeza, njengesandisi somthamo weplasma, nakwezinye izicelo.
• I-Hydroxypropyl Starch (HPS): I-HPS iveliswa ngokwazisa amaqela e-hydroxypropyl kwisakhiwo sesitatshi. Olu hlengahlengiso luphucula iipropathi ezinje ngokunyibilika kwamanzi kunye nobuchule bokwenza ifilimu, nto leyo eyenza ukuba ibe luncedo kumashishini afana nokutya, amalaphu, kunye nokwakha.
• I-Carboxymethyl Starch (CMS): I-CMS idalwe ngokuzisa amaqela e-carboxymethyl kwiimolekyuli zestatshi. Olu hlengahlengiso lunika iipropathi ezinjengokugcinwa kwamanzi okuphuculweyo, ukujiya, kunye nokuzinza, kuyenza ixabiseke kwizicelo ezifana nokuncamathelisa, amalaphu, kunye namayeza.

2. Ukunyibilika kwamanzi:

• Isitatshi se-ethers sibonakalisa ukunyibilika okuphuculweyo kwamanzi xa kuthelekiswa nesitatshi semveli. Oku kunyibilika okongeziweyo kunenzuzo kwimixube apho ukuchithwa okukhawulezayo okanye ukusasazwa kwamanzi kufuneka.

3. IiPropati zeViscosity kunye nokuJiya:

• Isitatshi ethers sisebenza njengezityebi ezisebenzayo kwiimixube ezahlukeneyo. Bafaka isandla ekwandeni kwe-viscosity, exabisekileyo kwizicelo ezifana nokunamathiswa, iingubo kunye neemveliso zokutya.

4. Isakhono sokwenza ifilim:

• Ezinye ii-ethers zesitatshi, ngakumbi isitashi se-hydroxypropyl, zibonisa iipropati zokwenza ifilimu. Oku kubenza bafanelekele izicelo apho kufunwa ifilimu encinci, eguquguqukayo, njengakumashishini okutya kunye namayeza.

5. Uzinziso kunye neePropati eziBophelayo:

• Isitatshi ethers zisoloko zisetyenziswa njengezinzisi kunye nezibophelelo kwiintlobo ngeentlobo zemixube. Banceda ukuphucula ukuzinza kwe-emulsions kunye negalelo ekubambeni kweemveliso ezifana neepilisi zamachiza.

6. Izicelo zokuncamathelisa:

• Isitatshi ethers zifumana ukusetyenziswa kwizinto zokuncamathelisa, zombini kwishishini lokutya (umzekelo, kwi-gum substitutes arabic) kunye nezicelo ezingezizo ukutya (umzekelo, ephepheni nakwizinto zokupakisha).

7. Ubungakanani beLaphu:

• Kushishino lwamalaphu, ii-ethers zesitatshi zisetyenziswa ekuhlanganiseni ukulinganisa ukuphucula amandla kunye nokuguda kwemisonto ngexesha lokuluka.

8. Ukusetyenziswa kwezamayeza:

• Ezinye ii-ethers zesitatshi zisetyenziswa ekuxutyweni kwamayeza. Umzekelo, isitashi se-hydroxyethyl sisetyenziswa njengesandisi somthamo weplasma.

9. Izinto zokwakha kunye nezixhobo zokwakha:

• Isitashi se-ethers, ngakumbi i-hydroxypropyl starch kunye ne-carboxymethyl starch, zisetyenziswa kushishino lokwakha, ngakumbi kwimixube eyomileyo yodaka. Banegalelo ekuphuculeni ukubambelela, ukusebenza, kunye nokugcinwa kwamanzi.

10. Ishishini lokutya:

11. Biodegradability:

12. Iingqwalasela zokusingqongileyo:

Kubalulekile ukuqaphela ukuba iipropati ezithile kunye nokusetyenziswa kwe-starch ethers zinokuhluka ngokusekelwe kuhlobo lokuguqulwa kunye nokusetyenziswa okujoliswe kuyo. Abavelisi banikezela ngeenkcukacha zobugcisa ezineenkcukacha zohlobo ngalunye lwe-ether yesitatshi ukukhokela abaqulunqi ekukhetheni eyona ndlela ifanelekileyo yokwahluka kwizicelo zabo ezithile.