Hydroxypropyl methylcellulose (HPMC) i polymer inoshanda zvakasiyana-siyana inowanzoshandiswa mumaindasitiri akasiyana siyana, anosanganisira mishonga, chikafu, kuvaka, uye zvekuzora. Chinhu chakakosha pakushandiswa kwayo kunyungudika kwayo muzvinonyungudutsa zvakasiyana, kusanganisira isopropyl alcohol (IPA).
HPMC inowanzonyungudika mumhando dzakasiyana dzezvinonyungudutsa, uye kunyungudika kwayo kunosiyana zvichienderana nezvinhu zvakaita sehuremu hwemamorekuru, dhigirii rekutsiva, uye tembiricha. HPMC ine imwe dhigirii yekunyungudika mune iyo isopropyl doro.
Isopropyl alcohol, inozivikanwawo sekuti kukwesha doro, inonyungudutsa inoshandiswa mumhando dzakasiyana siyana dzekushandisa. Iyo inozivikanwa nekugona kwayo kunyungudutsa huwandu hwakawanda hwezvinhu, uye HPMC haina mutsauko. Nekudaro, iyo solubility yeHPMC mu isopropyl doro inogona kunge isina kukwana kana nekukasira uye inogona kutsamira pane akati wandei.
Iyo dhigirii yekutsiva yeHPMC inoreva dhigirii rekutsiva hydroxypropyl uye methyl mapoka emapoka ehydroxyl mune cellulose chimiro. Iyi parameter inokanganisa kunyungudika kweHPMC mune zvakasiyana zvinonyungudutsa. Kazhinji, madhigirii epamusoro ekutsiva anogona kuvandudza kunyungudika mune zvimwe zvinonyungudutsa, kusanganisira isopropyl doro.
Iyo molecular huremu hweHPMC chimwe chinhu chekufunga nezvacho. Yepamusoro mamorekuru huremu HPMC inogona kunge iine akasiyana solubility zvivakwa zvichienzaniswa neakadzika mamorekuru uremu akasiyana. Izvo zvakakosha kucherechedza kuti kune akasiyana mamakisi eHPMC pamusika ane akasiyana zvivakwa, uye vagadziri vanowanzopa nhungamiro chaiyo pakunyungudika kwavo mune zvakasiyana zvinonyungudutsa.
Tembiricha inokanganisawo kunyungudika kweHPMC mune isopropyl doro. Kazhinji, kuwedzera tembiricha kunogona kuwedzera kunyungudika kwezvinhu zvakawanda, asi izvi zvinogona kusiyana zvichienderana negiredhi repolymer.
Kunyungudutsa HPMC mune isopropyl doro, unogona kutevera aya akajairwa matanho:
Yema huwandu hunodiwa: Sarudza huwandu hweHPMC hunodiwa pakushandisa kwako.
Gadzirira solvent: Shandisa mudziyo wakakodzera uye uwedzere huwandu hunodiwa hwe isopropyl alcohol. Zvinokurudzirwa kushandisa mudziyo une chivharo kudzivirira evaporation.
Wedzera HPMC Zvishoma nezvishoma: Paunenge uchikurudzira kana kubvongodza solvent, zvishoma nezvishoma wedzera HPMC. Ita shuwa kusanganisa zvakakwana kukurudzira kuparara.
Gadzirisa mamiriro ezvinhu kana zvichidikanwa: Kana kupera kwakakwana kusingawanikwe, funga kugadzirisa zvinhu zvakaita setembiricha kana kushandisa giredhi rakasiyana reHPMC.
Sefa kana zvichidikanwa: mune dzimwe nguva, zvimedu zvisina kunyungudika zvinogona kunge zviripo. Kana kujeka kwakakosha, unogona kusefa mhinduro kubvisa chero zvidimbu zvakasara zvakasimba.
HPMC inowanzonyungudika mu isopropyl doro, asi dhigirii rekunyungudika rinokanganiswa nezvinhu zvakaita sedhigirii rekutsiva, huremu hwemamorekuru, uye tembiricha. Kana uine giredhi chairo kana mhando yeHPMC, zvinokurudzirwa kutarisa nhungamiro yemugadziri weruzivo rwechokwadi nezve isopropyl alcohol solubility.
Nguva yekutumira: Jan-25-2024