Hydroxypropyl methylcellulose (hpmc)ndi nkhani yosungunuka yamadzi yomwe imagwiritsidwa ntchito kwambiri pomanga, mankhwala, chakudya ndi zodzola. M'malo onyomera, ntchito ya HPMC imakhudzidwa ndi zinthu zambiri, ndipo mawonekedwe ake amafufuza kusintha kwake komanso kukhazikika pamapulogalamu osiyanasiyana.
1. Hygroscopicity
HPMC ndi nkhani ya hydrophilic yokhala ndi mphamvu yamphamvu. M'malo onyontho, hpmc amatha kuyamwa chinyezi kuchokera kumlengalenga, yomwe imadziwika ndi ma hydroxyl ambiri ndi methoxy m'magulu ake. Izi hygrosopicity imayambitsa filimu yamadzi kuti ipange pamtunda wa hpmc, ndikupangitsa kuti ziwonetsere bwino mafuta ndi kutsatsa. Katunduyu ndi wofunikira kwambiri pakumanga. Mwachitsanzo, ku Tile yomatira ndi ufa wa punty, hpmc imatha kukonza magwiridwe antchito ndi kusungidwa kwamadzi kwa malonda.
Komabe, hygrosopicity yambiri imatha kuyambitsa mavuto pamapulogalamu ena. Mwachitsanzo, hpmc ikagwiritsidwa ntchito ngati matrix owongolera m'mapiritsi a mankhwalawa, madzi ochulukirapo amatha kusintha kuchuluka kwa mankhwalawa ndikukhudza kukhazikika kwa mankhwala osokoneza bongo. Chifukwa chake, mokhazikika, kapangidwe ka HPMC ikufunika kulipira mwapadera hygroscopic.
2. Kukhazikika
HPMC nthawi zambiri imawonetsa kukhazikika kwamphamvu kwa ma malo achinyontho. Chifukwa cha kusintha kwapadera kwa manyolo ake, hpmc kumakhala kokhazikika m'maiko onse ndi alkaline ndipo sawonongeka kwambiri kapena kusintha kwa mankhwala pansi pa chinyezi chambiri. Komabe, chinyezi chambiri chimatha kukhala ndi vuto linalake pamtundu wake. Mwachitsanzo, kusinthika kwa HPMC kumatha kuthamangitsidwa, ndipo mawonekedwe ake amasintha chifukwa cha kuyamwa chinyezi.
Pogwiritsa ntchito mapulogalamu omanga, malo opangira chinyezi amatha kuwononga madzi opotoka a HPMC-kusinthidwa kuti achepetse, potero atachepetsa nthawi yowuma. Nthawi zina, izi zitha kukhala zothandiza chifukwa zimapereka nthawi yochulukirapo. Komabe, chinyontho chochuluka chimatha kuchepetsedwa mphamvu pambuyo pouma kapena ming'alu pamwamba.
3. Kusungidwa kwamadzi
HPMC ili ndi madzi ambiri osunga madzi munyezi. Katunduyu amapangitsa kuti zikhale zowonjezera pazomanga. Mwachitsanzo, panthawi ya khoma potulutsa, hpmc imatha kupewa bwino kutaya madzi mwachangu, potero kuonetsetsa kuti matope ali ndi nthawi yokwanira kuti mumalize kuchitira ma hydration. M'dera lodyerali, kusakhazikika kwa madzi kumeneku kungakhale kowonjezereka chifukwa chinyezi pochilengedwe chimapereka gwero lina la chinyezi.
4. Kutha kwa mafilimu
Kutha kwa mafilimu ku HPMC kumadziwika kwambiri m'malo achinyontho. Momwe HPMC Imalizira ndi mpweya wokhala ndi chinyezi chambiri, madzi opanduka amatsitsidwa, kulimbikitsa ma yunifolomu ya filimuyo. Kanemayu ali ndi kusinthasintha komanso kukana kwakukulu, ndipo amatha kuwononga movutikira komanso kuwononga madzi opangira zomangamanga. Mu chakudya ndi minda ya mankhwala, mafilimu a HPMC amathanso kugwiritsidwa ntchito pokutidwa ndikuteteza zosanja kuchokera ku malo achilengedwe.
5.
Pofuna kukonza magwiridwe antchito a hpmc mu madera achinyontho, njira zingapo zosinthira zatengedwa m'minda yosiyanasiyana yogwiritsa ntchito. Mwachitsanzo, mwa kusintha kuchuluka kwa zomwe zili hpmc, hygroscopicity ndi ma viccotis angasinthidwe; Pomanga zida, kukhazikika kwake kwa madera achinyontho kumatha kupitilizidwa ndi kuphatikizira ndi zowonjezera zina (monga ma cecker ufa).
Magwiridwe antchitoHpmcMadera achinyontho amakhudzidwa ndi zinthu zambiri. Mphamvu zake, kusungidwa kwamadzi komanso luso lopanga mafilimu limapangitsa kuti ziwoneke bwino kwambiri pamagawo omanga, mankhwala ndi chakudya. Komabe, malo otetezeka amakhala ndi chinyezi atha kubweretsa zovuta zomwe zingatheke, zomwe zikufunika kulembedwa pogwiritsa ntchito njira zasayansi komanso njira zosinthira. Mwa kuphunzira kwambiri machitidwe a HPMC mu malo otsetsereka, mikhalidwe yake ingakhale bwino kukwaniritsa zosowa zosiyanasiyana.
Post Nthawi: Disembala-24-2024