Hydroxypropyl methyl cellulose VS methyl cellulose

1. Hydroxypropyl methyl celluloseMadzi otentha akasungunuka m'madzi ozizira, amakumana ndi mavuto. Koma kutentha kwake kwa gelation m'madzi otentha kumakhala kwakukulu kwambiri kuposa kwa methyl cellulose. Kusungunuka kwa methyl cellulose m'madzi ozizira nakonso kumawonjezeka kwambiri.

2. Kukhuthala kwa hydroxypropyl methyl cellulose kumakhudzana ndi kulemera kwake kwa mamolekyulu, ndipo kulemera kwakukulu kwa mamolekyulu ndi kukhuthala kwakukulu. Kutentha kumakhudzanso kukhuthala kwake, kutentha kumawonjezeka, kukhuthala kumachepa. Komabe, kukhuthala kwa kutentha kwakukulu kumakhala kotsika kuposa kwa methyl cellulose. Yankho lake ndi lokhazikika likasungidwa kutentha kwa chipinda.

3. Hydroxypropyl methyl cellulose ndi yokhazikika ku asidi ndi alkali, ndipo yankho lake lamadzi ndi lokhazikika kwambiri pa pH = 2 ~ 12. Caustic soda ndi madzi a laimu sizikhudza kwambiri mphamvu zake, koma alkali imatha kufulumizitsa kusungunuka kwake ndikuwonjezera kukhuthala kwa pini. Hydroxypropyl methyl cellulose imakhala yokhazikika ku mchere wamba, koma pamene mchere uli wambiri, kukhuthala kwa yankho la hydroxypropyl methyl cellulose kumawonjezeka.

4. Kusunga madzi kwa hydroxypropyl methyl cellulose kumadalira kuchuluka kwake kowonjezera, kukhuthala, ndi zina zotero. Kuchuluka kwa madzi komwe kumasungidwa pansi pa kuchuluka komweko kowonjezera kumakhala kwakukulu kuposa kwa methyl cellulose.

5. Kumamatira kwa hydroxypropyl methyl cellulose ku matope ndi kwakukulu kuposa kwa methyl cellulose.

6. Hydroxypropyl methyl celluloseIli ndi kukana bwino kwa ma enzyme kuposa methyl cellulose, ndipo kuthekera kwa kuwonongeka kwa ma enzyme mu yankho ndi kochepa kuposa methyl cellulose.