Umehluko phakathi kwe-Hydroxypropyl Starch ether ne-Hydroxypropyl Methylcellulose Ekwakhiweni

I-Hydroxypropyl Starch Ether (HPSE) kanyeIHydroxypropyl Methylcellulose (HPMC)zombili izinhlobo zama-polymers ancibilika emanzini avame ukusetshenziswa embonini yezokwakha. Nakuba babelana ngokufana okuthile, kunomehluko oyinhloko ezakhiweni zabo zamakhemikhali nezici zokusebenza. Ngezansi umehluko omkhulu phakathi kwe-Hydroxypropyl Starch Ether ne-Hydroxypropyl Methylcellulose ezinhlelweni zokwakha:

1. Isakhiwo Samakhemikhali:

• I-HPSE (Hydroxypropyl Starch Ether):
  • Itholakala ku-starch, okuyi-carbohydrate etholakala emithonjeni yezitshalo ehlukahlukene.
  • Kulungiswe nge-hydroxypropylation ukuze kuthuthukiswe izakhiwo zayo.
• I-HPMC (Hydroxypropyl Methylcellulose):
  • Ithathwe ku-cellulose, i-polymer yemvelo etholakala ezindongeni zamaseli ezitshalo.
  • Kulungiswe nge-hydroxypropylation kanye ne-methylation ukuze kuzuzwe izakhiwo ezidingekayo.

2. Umthombo:

• I-HPSE:
  • Kutholwe emithonjeni yesitashi esekwe ezitshalweni, njengommbila, amazambane, noma i-tapioca.
• I-HPMC:
  • Itholakala emithonjeni ye-cellulose esekwe esitshalweni, ngokuvamile i-pulp yokhuni noma ukotini.

3. Ukunyibilika:

• I-HPSE:
  • Ngokuvamile kubonisa ukuncibilika okuhle kwamanzi, okuvumela ukusakazeka kalula ekwakhiweni okusekelwe emanzini.
• I-HPMC:
  • Ancibilika kakhulu emanzini, okwenza izixazululo ezicacile emanzini.

4. I-Thermal Gelation:

• I-HPSE:
  • Amanye ama-hydroxypropyl starch ethers angase abonise izakhiwo ezishisayo ze-gelation, lapho i-viscosity yesisombululo ikhula ngokushisa.
• I-HPMC:
  • Ngokuvamile ayibonisi i-gelation eshisayo, futhi i-viscosity yayo ihlala izinzile kulo lonke uhla lwamazinga okushisa.

5. Izici Zokwenza Amafilimu:

• I-HPSE:
  • Ingakha amafilimu anokuguquguquka okuhle kanye nezakhiwo zokunamathela.
• I-HPMC:
  • Ibonisa izakhiwo zokwenza ifilimu, enomthelela ekunamatheleni okuthuthukisiwe nokubumbana ekwakhiweni kokwakhiwa.

6. Iqhaza Ekwakhiweni:

• I-HPSE:
  • Isetshenziswa ezinhlelweni zokwakha ukuqina kwayo, ukugcinwa kwamanzi, kanye nezakhiwo zokunamathela. Ingase isetshenziswe emikhiqizweni eyenziwe nge-gypsum, osimende, nezinamatheliso.
• I-HPMC:
  • Isetshenziswa kakhulu ekwakhiweni kwendima yayo njenge-thickener, i-ejenti yokugcina amanzi, kanye nesithuthukisi sokusebenza. Ivame ukutholakala odakeni olusekelwe kusimende, izinto zokunamathisela zamathayili, ama-grouts, nokunye ukwakheka.

7. Ukuhambisana:

• I-HPSE:
  • Ihambisana nohlu lwezinye izithasiselo zokwakha nezinto zokwakha.
• I-HPMC:
  • Ibonisa ukuhambisana okuhle nezinto zokwakha ezihlukahlukene kanye nezithasiselo.

8. Ukusetha isikhathi:

• I-HPSE:
  • Ingase ibe nomthelela ekumisweni kwesikhathi kokunye kokwakhiwa kokwakhiwa.
• I-HPMC:
  • Ingathonya isikhathi sokumiswa kodaka neminye imikhiqizo kasimende.

9. Ukuvumelana nezimo:

• I-HPSE:
  • Amafilimu akhiwe yi-hydroxypropyl starch ethers ajwayele ukuguquguquka.
• I-HPMC:
  • Inikela ekuguquguqukeni nasekuqineni kokuqhekeka ekwakhiweni kokwakhiwa.

10. Izindawo zokufaka isicelo:

• I-HPSE:
  • Kutholwe emikhiqizweni eyahlukene yokwakha, okuhlanganisa ukhonkolo, i-putty, kanye ne-adhesive formulations.
• I-HPMC:
  • Okuvame ukusetshenziswa odakeni olusekelwe kusimende, izinto zokunamathisela zamathayela, ama-grouts, nezinye izinto zokwakha.

Kafushane, kuyilapho kokubili i-Hydroxypropyl Starch Ether (HPSE) ne-Hydroxypropyl Methylcellulose (HPMC) zisebenzisa izinjongo ezifanayo ekwakhiweni, imvelaphi yazo yamakhemikhali ehlukile, izici zokuncibilika, nezinye izakhiwo zizenza zifanelekele ukwakheka nokusetshenziswa okuhlukile ngaphakathi kwemboni yezokwakha. Ukukhetha phakathi kwabo kuncike ezidingweni ezithile zezinto zokwakha kanye nezici zokusebenza ezifunayo.