HPMC ndi thonje yoyera kwambiri ya thonje monga zopangira, pansi pa zinthu zamchere mwapadera ndi etherification ndi kukonzekera.White kapena yoyera ufa.HPMC imachepa ndi kuchepa kwa zinthu za methoxide, kuwonjezeka kwa gel point, kuchepa kwa kusungunuka kwa madzi ndi kuchepa kwa ntchito pamwamba.
HPMC ili ndi mphamvu yowonjezera, kukana mchere, ufa wochepa wa phulusa, kukhazikika kwa pH, kusunga madzi, kukhazikika kwa mawonekedwe, kupanga mafilimu abwino kwambiri, komanso kukana kwa ma enzyme, kubalalitsidwa ndi kumamatira.
HPMC, Hydroxypropyl Methylcellulose mitundu ya non-ionic mapadi efa, amene ndi ufa woyera kuti kuchokera woyera mtundu, kuti ntchito monga thickener, binder, filimu-oyamba, surfactant, zoteteza colloid, lubricant, emulsifier ndi kuyimitsidwa ndi thandizo posungira madzi.Kuphatikiza apo, pali mitundu ya ma cellulose ethers amawonetsa matenthedwe a gelation, metabolic inertness, kukana kwa enzyme, kununkhira kochepa ndi kukoma, komanso kukhazikika kwa PH.
Chifukwa cha zinthu zambirimbiri, HPMC imagwiritsidwa ntchito m'malo mwazowonjezera zina zambiri, zomwe zimapangitsa kuti HPMC ikhale yothandiza kwambiri komanso yothandiza popanga zomatira, zomangamanga, zakudya, zinthu zapakhomo, zamankhwala ndi zina.
| Dzina la malonda | Mtengo wa HPMC | ||
| zomwe zili mu methoxy | 28.0-30.0 27.0-30.0 19.0-24.0 | ||
| Zomwe zili mu hydroxypropyl | 7.0-12.0 4.0-7.5 4.0-12.0 | ||
| kutentha kwa gelation | 58-64 62-68 70-90 | ||
| chinyezi | ≤5% | ||
| Phulusa | ≤1% | ||
| Mtengo wapatali wa magawo PH | 4-8 | ||
| Mawonekedwe | Whie ufa | ||
| Kulimbitsa thupi | 80-100 mndandanda | ||
| Viscosity | 300-200,000 Ikhoza kusinthidwa | ||
| Re HPMC idakwera ndi kuchepa kwa methoxy, kusungunuka kwamadzi kwa gel point ndi ntchito zapamtunda nazonso zidatsika.Zimatengera momwe makasitomala alili | |||
Nthawi yotumiza: Mar-15-2021