Ngaba i-hydroxymethylcellulose iyafana ne-hydroxypropyl methylcellulose?

I-Carboxymethyl cellulose (i-Carboxymethyl cellulose) yenziwe ngokusabela kweqela le-hydroxyl yeyunithi ye-anhydroglucose kwikhonkco ye-cellulose kunye neqela le-etherification (i-chloro Z acid okanye i-ethylene oxide);

Yinto engenambala i-amorphous i-soluble emanzini, isisombululo se-alkali esimanzi, i-ammonia kunye ne-cellulose isisombululo, i-insoluble kwi-organic solution kunye ne-oyile yamaminerali; ingasetyenziswa njengokulinganisa, i-calender kunye ne-ejenti yokuqina kushishino lwempahla elukiweyo;

I-arhente yolwakhiwo kwimveliso yephepha kunye nebhodi;

Ukuphinda kufakwe ukungcola kwi-synthetic agents zokucoca;

I-agent ye-Flotation yokukhetha i-copper-nickel kunye ne-potassium ore;

I-Viscous suspension thickener kunye ne-stabilizer xa ubhobhoza ioli kunye negesi yegesi;

ukubunjwa kweglue kwiphepha lodonga;

amacandelo omxube wokwakha owomileyo;

Amacandelo epeyinti ye-latex yamanzi, njl.

I-Hydroxypropyl methylcellulose (i-Hypromellose, i-Cellulose) yenziwe nge-cotton cellulose ecocekileyo kakhulu njengento ekrwada, ekhutshwe ngokukodwa phantsi kweemeko ze-alkaline, kwaye ayinayo nayiphi na izithako ezisebenzayo ezifana nezitho zezilwanyana kunye namafutha. I-Soluble emanzini kunye nobuninzi be-polar kunye nemilinganiselo efanelekileyo ye-ethanol / amanzi, ipropanol / amanzi, i-dichloroethane, njl., enganyibilikiyo kwi-ether, i-acetone, kunye ne-ethanol epheleleyo, kwaye idumba ibe yisisombululo esicacileyo okanye esincinci se-colloidal emanzini abandayo. Isisombululo samanzi sinomsebenzi ongaphezulu, ukukhanya okuphezulu kunye nokusebenza okuzinzileyo.

I-HPMC inepropati ye-thermal gelation. Imveliso yesisombululo se-aqueous ishushu ukuze yenze i-gel kunye ne-precipitates, kwaye idibanise emva kokupholisa. Ukushisa kwe-gelation yeenkcukacha ezahlukeneyo kuyahluka. Ukunyibilika kuyahluka kunye ne-viscosity. I-viscosity ephantsi, i-solubility enkulu. Ukucaciswa okuhlukeneyo kwe-HPMC kunomahluko othile kwiipropati zabo. Ukuchithwa kwe-HPMC emanzini akuchatshazelwa lixabiso le-pH.