Hydroxypylferose (HPMC) ndi zinthu zachilengedwe zomwe zimagwiritsidwa ntchito podyera, mankhwala, zodzoladzola ndi minda ina. Maonekedwe ake ndi chizindikiro chofunikira chomwe chimakhudza magwiridwe ake, omwe nthawi zambiri amagwirizana kwambiri ndi zinthu monga momwe ma molecular kulemera kwa HPMC, yankho la kukhazikika, mtundu wa zosungunulira ndi kutentha.
1. Kulemera kwa molecular
Kulemera kwa HPMC ndi chimodzi mwazinthu zovuta kwambiri zomwe zimakhudza mafayilo ake. Nthawi zambiri, kulemera kwa maselo, kutalika kwa hpmc, zoyipa kwambiri zamadzimadzi, komanso ma virus. Izi ndichifukwa kapangidwe ka macromolecular cheni chowonjezera, zomwe zimapangitsa kuti ziletso zamphamvu pamadzi a yankho. Chifukwa chake, ku nthawi yomweyo, njira zothetsera HPMC yokhala ndi zolemera zochepa kwambiri nthawi zambiri zimawonetsa ma viscosies apamwamba.
Kuchuluka kwa ma celecular kumakhudzanso ma viscoelastic zida za yankho. Mayankho a HPMC okhala ndi zolemera zapamwamba zimawonetsa ma visa olimba m'mutu wotsika, ali pamtengo wapamwamba kuti azikhala ngati madzi a Newtonian. Izi zimapangitsa kuti HPMC ikhale ndi mikhalidwe yovuta kwambiri ya ri heilogical m'malo osiyanasiyana ogwirizanitsa.
2. Njira yothetsera mavuto
Kukhazikika kwa yankho kumathandizanso pakuwoneka kwa HPMC. Pamene kuchuluka kwa HPMC kumawonjezeka, kulumikizana pakati pa mamolekyu pakuthetsa kumawonjezeka, zomwe zimapangitsa kuwonjezeka motero ndikuwonjezereka. Nthawi zambiri, kuchuluka kwa HPMC kumawonetsa kukula kosagwirizana m'miyeso inayake, ndiye kuti, kuchuluka komwe kukulira pang'onopang'ono.
Makamaka mumitundu yapamwamba kwambiri, kulumikizana pakati pa ma unyolo kumalimba, ndipo ma network kapena netiweki kapena netrit imatha kuchitika, yomwe idzakulitsa mafayilo a yankho. Chifukwa chake, kugwiritsa ntchito mafakitale, kuti akwaniritse kuwongolera koyenera, nthawi zambiri pamafunika kusintha kwa HPMC.
3. Mtundu wosungunulira
Kusungunuka ndi mawonekedwe a HPMC kumakhudzananso ndi mtundu wa zosungunulira zomwe zimagwiritsidwa ntchito. Nthawi zambiri hpmc nthawi zambiri amagwiritsa ntchito madzi ngati zosungunulira, koma m'mikhalidwe inayake, ma sonsol ena monga Ethanol ndi acetone angagwiritsidwenso ntchito. Madzi, monga polar solvent, amatha kulumikizana ndi magulu a hydroxyl ndi meth mu mamolekyu a HPMC kulimbikitsa kuwonongeka kwake.
Polarity ya zosungunulira, kutentha, ndi kulumikizana pakati pa zosungunulira ndi mamolekyu a HPMC kumakhudza kusoka kwa HPMC. Mwachitsanzo, kutuluka kochepa kwambiri kumagwiritsidwa ntchito, kusungunuka kwa HPMC kumachepa, chifukwa chokweza njira yothetsera vutoli.
4. Kutentha
Mphamvu ya kutentha pa ufa ya HPMC ndiyofunika kwambiri. Nthawi zambiri, mafayilo a HPMC yankho limachepa ndi kutentha kwambiri. Izi ndichifukwa choti kutentha kumawonjezeka, kusuntha kwa mabwalo kumawonjezeka, kumapangitsa kufooketsa kogwirizana ndi mamolekyulu, potero kuchepetsa ufa.
Kutentha kwina kumalowa, zopangira zanyengo za HPMC zimawonetsa kuti sizimawonekera bwino kwambiri, ndiye kuti, mafanowo sikuti amangokhudzidwa ndi kuchuluka kwa mitsinje, komanso mwakusintha kwamasamba. Chifukwa chake, mu mapulogalamu othandiza, owongolera kutentha ndi njira yabwino yosinthira kuti asinthe ma viscc a HPMC.
5. Mtengo wometa
Makutu a HPMC yankho sikuti amangokhudzidwa ndi zinthu zokhazikika, komanso ndi misempha. HPMC ndi madzi osakhala achi Newtonia, ndipo chidwi chake chimasintha ndi kusintha kwa chiwonongeko. Nthawi zambiri, kuwerengako kwa HPMC kumawonetsa mafayilo apamwamba pamitengo yotsika, pomwe mamasukidwe amachepa kwambiri pamlingo wometa ubweya. Izi zimatchedwa kuti kumeta ubweya.
Mphamvu ya chiwongola dzanja pakuwoneka kwa HPMC nthawi zambiri kumakhudzana ndi mawonekedwe oyenda ma unyolo. Pamlingo wotsika wa Shear, unyolo unyolo umakonda kukopeka, zomwe zimapangitsa mamasukidwe apamwamba; Pa mitengo yapamwamba ya Shear, kulumikizana pakati pa ma unyolo kumasweka ndipo ma viruswo ndi ochepa.
6. Mtengo wa PH
Makulidwe a HPMC amakhudzananso ndi mtengo wa pH yankho. Mamolekyulu a HPMC ali ndi magulu osinthika a hydroxpyl ndi methyl, ndipo mlandu wa maguluwa umakhudzidwa ndi PH. Mu phs ph zina masentimita, hpmc mamolekyulu amatha kutanthauza matope kapena ma gels, posintha mafayilo a yankho.
Nthawi zambiri, m'malo okhala acidic kapena alkaline, kapangidwe ka HPMC kungasinthe, kukhudza kulumikizana kwake ndi mamolekyulu a solvent ndipo, kumakhudzanso mafayilo. Pamitengo yosiyanasiyana ya p
7. Zotsatira za zowonjezera
Kuphatikiza pa zinthu zomwe zili pamwambapa, zina zowonjezera monga mchere ndi zowonjezera zimathanso kukhudza mamasukidwe a HPMC. Kuphatikiza kwa mchere kumatha kusintha mphamvu ya ionic ya njirayi, potero kumakhudza solubility ndi kukweza mamolekyulu a HPMC. Zokonda zimatha kusintha kapangidwe ka HPMC mwa kusintha kulumikizana pakati pa mamolekyules, potero kumasintha ma viscy.
Makulidwe a HPMC amakhudzidwa ndi zinthu zambiri, kuphatikizapo kunenepa kwambiri, njira yothetsera mavuto, zosungunulira, kutentha, kutentha kwa shear, pH yamtengo wapatali. Pofuna kuthana ndi mafayilo a HPMC, zinthu izi zimafunikira kuti zisasinthidwe malinga ndi zofunikira zenizeni. Mwa kumvetsetsa zinthu zokopa izi, magwiridwe antchito a HPMC akhoza kukhazikika pakupanga mosiyanasiyana ndi malo ogwiritsira ntchito kuti atsimikizire kukhazikika kwake komanso kuchita bwino pamapulogalamu osiyanasiyana.
Post Nthawi: Feb-15-2025