Hydroxypropyl methylcellulose (hpmc)ndizogwiritsidwa ntchito mwachilengedwe polymer zinthu zachilengedwe ndipo zimagwiritsidwa ntchito kwambiri pakukonzekera mankhwala, kukonza chakudya, ntchito, zodzoladzola ndi minda ina. Mphamvu zake, makamaka mafakisoni ndi kufalitsa, khalani ndi chitetezo pakugwiritsa ntchito.
1. Kulemera kwa molecular
Kukula kwa maselo ndi chimodzi mwazinthu zofunika zomwe zimatsimikizira magwiridwe antchito a HPMC. Monga momwe ma molecular kulemera kwa Kimacell®hpmc imachulukirachulukira, matayala amtundu wa mabowo amayamba nthawi yayitali ndipo mafayilo amawonjezeka. Izi ndichifukwa maunyolo molema amakhala ndi luso lamphamvu mu yankho, zomwe zimapangitsa kuti mupeze madzi osayenera, omwe amawonekera ngati mamasukidwe apamwamba. Mosiyana ndi izi, kugwiritsa ntchito ma hpmc ndi otsika ma molecular kumakhala ndi madzi otsika komanso otsitsa.
Kulemera kwa ma molecular kumakhalanso paubwenzi winawake. Nthawi zambiri, njira zothetsera HPMC yokhala ndi kulemera kwapamwamba kumatha kupanga zingwe zokulirapo zakumaso chifukwa cha unyolo wawo wautali, zomwe zimakhudza kusokonekera kwa kuwala ndikumabweretsa kuchepa kwa kupatukana.
2. Hydroxypropyl ndi Methylation digiri
Kapangidwe ka mankhwala kwa HPMC kumaphatikizapo hydroxypyl ndi magulu a methyl, ndipo mawu oyambilirawa amakhudza kwambiri kusungunuka kwake kusungunuka kwake kusungunuka kwake kusungunuka kwake kusungunuka. Nthawi zambiri, kuchuluka kwa hydrocypylation kumatha kusintha kusungunuka kwa HPMC, pomwe ikuwonjezera kuchuluka kwa methylation kumawonjezera kukhazikika kwake ndikukhazikika kwa Colloid.
Kuchuluka kwa methylation: kuwonjezeka kwa digiri ya methylation kumabweretsa kuwonjezeka kwa mamolekyu a HPMC, potero akuwonjezera ufa wa yankho. Kwambiri kwambiri kuchuluka kwa methylation kumatha kuyambitsa mafayilo otha kukhala akulu kwambiri, omwe amakhudza madzi ambiri.
Magulu a hydroxypropropropropropropyphy: Kuyambitsidwa kwa ma hydroxypyl magulu kumawonjezera hydchilililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililililil Okwera kwambiri kwambiri a hydroxypylaty amatha kuchepetsa mawonekedwe a yankho, potero akukhudza tanthauzo lake.
3. Katundu wa solvent
Kusungunuka kwa HPMC ndi mafayilo a njirayi amakhudzidwa kwambiri ndi zinthu za zosungunulira. Nthawi zambiri, hpmc imatha kusungunuka m'madzi, koma kusungunuka kwake kumakhudzidwanso ndi zomwe monga kutentha, mtengo wa pp, ndi mchere wamadzi.
Kutentha kowonjezereka nthawi zambiri kumathandiza hpmc kusungunuka ndikuchepetsa mafayilo a yankho. Komabe, ngati matenthedwe ali okwera kwambiri, amatha kuyambitsa kuwonongeka kwa hpmc, kumakhudza mafayilo ake komanso kupatsirana.
mtengo wamfumu: kusungunuka ndi ufa wa HPMC imakhudzidwanso ndi PH. Kusungunuka ndikusintha kwa HPMC kumatha kusiyanasiyana kwa ma p
Mphamvu ya Ionic Ionic: Ngati mchere wambiri umawonjezeredwa ku yankho, mphamvu ya iyonic yothetsera njira imachulukira, yomwe ingakhudze kulumikizana pakati pa mamolekyu a HPMC ndikusintha ma viscy.
4. HPMC ndende
Kukhazikika kwa HPMC kumachitika mwachindunji pakukweza kwa yankho. Nthawi zambiri, mawonekedwe a njirayi amawonera mogwirizana ndi kuchuluka kwa HPMC. Komabe, pompopompo kwambiri, yankho lake lingafike pamlingo wina wa mafano, momwemonso zomwe zikuthandizani kukulitsa chidwi cha ma viscket.
Kuchuluka kwakukulu kungakhudzenso mawonekedwe a HPMC. Mayankho apamwamba amatha kupanga tinthu tambiri kapena ophatikizika chifukwa cha zokambirana mwamphamvu pakati pa mamolekyulu, zomwe zimapangitsa kuti ziwonjezeke ndikusokoneza.
5. Mtengo wometa ndi mbiri yakale
Mawonekedwe ndi kupatsirana kwa ma Kimacellycc njira zimakhudzidwa pamlingo wina ndi mitsuko (ie, yoyenda) ndi mbiri yakale. Mtengo wapamwamba kwambiri, wamphamvu kwambiri wamatuwa ndi wotsika. Kumeta kwa nthawi yayitali kumatha kuwonongeka kwa ma unyolo, motero kumakhudza mafayilo ndi kupatsirana kwa yankho.
Mbiri ya Shear imakhudza kwambiri zachiwerewere za HPMC. Ngati njira yothetsera vutoli ikuchitika kwa nthawi yayitali, kulumikizana pakati pa mamolekyulu a HPMC kungakhale kuwonongeka, komwe kumapangitsa kuchepa kwa njira ya ma visct, ndipo kungakhudzenso tanthauzo.
6. Zowonjezera zakunja
Mu HPMC yankho, ndikuwonjezera mitundu yosiyanasiyana yazowonjezera (monga oundana, okhazikika, mchere, ndi zina). Mwachitsanzo, ena okulitsa amatha kuyanjana ndi HPMC kuti apange ma hafu, potero akuwonjezera ufa wa yankho. Kuphatikiza apo, kuwonjezera kwa mchere wina kungasinthe kusungunuka ndi mafayilo a HPMC posintha mphamvu ya ionic ya yankho.
Otsatsa: Zowonjezera izi nthawi zambiri zimawonjezera mawonekedwe a HPMC yankho la HPMC, koma kugwiritsa ntchito kwambiri kumatha kuyambitsa njira yomasulira kwambiri.
Zowonjezera: kuwonjezera kwa okonda kukhazikika kwa HPMC yankho la HPMC, koma nthawi zina zitha kusintha mamolekyulu, chifukwa mamolekyulu ozungulira amatha kulumikizana ndi mamolekyulu a HPMC ndikukhudza kufalitsa kuwala.
7.. Zosungidwa za yankho
Malo osungira a Kimacell®hpmc gwiritsani ntchito zofunika kwambiri pakuwoneka ndi kufalitsa. Kusungidwa kwa nthawi yayitali kungayambitse kusintha kwa mafayilo a HPMC, makamaka m'malo osakhazikika kapena kuwala kolimba. Kutentha kwakukulu kapena kuwonekera kwa nthawi yayitali kuwunika kwa ultraviolet kungayambitse kuwonongeka kwa HPMC, kumakhudza mafayilo a yankho ndipo kungayambitsenso kusintha.
Maonekedwe ndi kupatsirana kwaHpmcAmakhudzidwa ndi zinthu zambiri, makamaka kuphatikiza kulemera, digiri ya hydroxypyl ndi methylat, zosungunulira, kukhazikika, zowonjezera zakunja, zowonjezera zakunja, ndi zosunga zakale. Posintha zinthuzi, mayankho a HPMC omwe ali ndi katundu wina angapangidwe kuti akwaniritse zosowa za ntchito zosiyanasiyana.
Post Nthawi: Feb-24-2025