Kodi ndi mtundu wanji wa polity wa hpmc?

Hydroxypylpyl methylcellulose (hpmc) ndi zinthu zodziwika bwino za polymer komanso zochokera ku cellulose. Ndiwo polymer wopanda main-solic lopangidwa ndi kusintha kwa cellulose mwachilengedwe. Kukonzekera kukonzekera kwa HPMC nthawi zambiri kumaphatikizapo njira zotsatirazi: kuyanjanitsa cellulose ndi alkali achithandizo, kenako kubwereza ndi Promyl Chloride ma hydroxyl opanga HPMC.

Kapangidwe ka mankhwala ndi katundu wa hpmc
Chigawo choyambirira cha HPMC ndi β-d-pyranose shuga, chomwe ndi gawo loyambira la cellulose. Ku HPMC, magulu ena a hydroxyl (-Oh) amasinthidwa ndi magulu a methoxy (-Och₃) ndi hydroxyprophoxy magulu (--Och₂xyproxy (-Och₂xyproxy (-Och₂xyprocroxy magulu (-Och₂xyprovoy Izi zimathandizanso kusungunuka kwa HPMC m'madzi ndi ena okhazikika, ndipo imakhala ndi bata wabwino komanso hygroscopicity.

HPMC ikasungunuka m'madzi, imatha kupanga yankho lokhazikika la colloidal. Kusungunuka kwake kumakhudzana ndi mtundu ndi kuchuluka kwa malo am'minja. Nthawi zambiri, kuyankhula ndi zinthu zambiri za methyl m'malo mopumira m'madzi ozizira, pomwe hpmc yokhala ndi hydroxypypyl ali ndi kusungunuka bwino m'madzi ofunda. Kuphatikiza apo, mayankho a HPMC ali ndi thermogel katundu wa thermogel, ndiye kuti, agwedezeka atatenthanso ukakhazikika.

Magawo a hpmc
Chifukwa cha mawonekedwe ake apadera ndi ma pyhnicochemical, hpmc yagwiritsidwa ntchito kwambiri m'minda yambiri.

Zipangizo zomanga: Zomangamanga, hpmc nthawi zambiri zimagwiritsidwa ntchito ngati thickener ndi madzi osungira madzi kuti akonze ziwonetsero zomanga simenti ndi gypsum zomaliza. Zitha kusinthanso chotsatsa, kukana ndi kulimba kwa matope.

Mankhwala: Kugwiritsa ntchito HPMC mu gawo la mankhwala kumaphatikizapo kuwongolera zokutira, makapisozi ndi okutira mapiritsi. Chifukwa HPMC sikuti ndi yopanda mphamvu, yomwe siyikugwirizana bwino, imagwiritsidwa ntchito kwambiri pakumasulidwa ndi kumasulidwa kwa mapiritsi.

Chakudya: M'mpani yopanga zakudya, hpmc imagwiritsidwa ntchito ngati thicker, okhazikika ndi opanga ayisikilimu, odzola, etc. imatha kusintha chakudya cha chakudya.

Zodzikongoletsera: Pamunda wa zodzola, hpmc nthawi zambiri zimagwiritsidwa ntchito ngati thickions kwa emulsions, mafuta ndi ma gels. Sikuti zimangopereka mawonekedwe abwino, komanso amapanga filimu yonyowa pakhungu, potero imagwira ntchito yonyowa ndi yoteteza.

Zovala: HPMC imagwiritsidwa ntchito ngati thicker, wobalalika ndi emulsifier mu zokumba, zomwe zingathandize kukonza magwiridwe antchito ndikuwongolera zokutira ndi zokutira.

Ubwino ndi Zofooka za HPMC
HPMC ili ndi zabwino zambiri, monga madzi osungunuka abwino, kukhazikika kwamankhwala, osadandaula komanso kupanda pake. Makhalidwe amenewa apanga kuti azigwiritsa ntchito kwambiri m'minda yambiri. Komabe, HPMC ilinso ndi zofooka zina. Mwachitsanzo, pansi pa malo otentha kwambiri, mafayilo a HPMC amatsika kwambiri, omwe amatha kukhala vuto pakugwiritsa ntchito. Kuphatikiza apo, hpmc ali ndi bata kwenikweni mu njira zokwanira kutentha kwambiri, zomwe zimalepheretsa ntchito yake m'malo ena.

HPMC ndi polymer yofunikira kwambiri yogwira ntchito. Ndi ntchito yake yapadera ndi mankhwala ndi ntchito yabwino, imagwiritsidwa ntchito kwambiri pomanga, mankhwala, zodzoladzola komanso zokutira. Ngakhale zili ndi zofooka zina, gawo la ntchito ya HPMC likukulabe kudzera pakufufuza mosalekeza komanso kusintha. Ndi chitukuko cha sayansi ndi ukadaulo, HPMC ikuyembekezeka kuchita mbali yofunika kwambiri.