Hydroxypropyl methylcellulose (HPMC)chinowanzo shandiswa cellulose chinobva kune zvakasiyana siyana zvekushandisa, kunyanya muminda yemishonga, zvekuzora, chikafu, uye zvekuvakisa. Haisi inonyungudutsa, asi mvura-inonyungudika polymer inogona kunyungudika mumvura uye kuumba yakajeka colloidal mhinduro. Kunyungudika kweAnxinCel®HPMC kunoenderana nenhamba uye chinzvimbo chemethyl uye hydroxypropyl inotsiva mune yayo molecular chimiro.
1. Zvinhu zvakakosha zvehydroxypropyl methylcellulose
Hydroxypropyl methylcellulose inowanikwa nemethylation uye hydroxypropylation ye cellulose. Cellulose pachayo ndeye yakasikwa yakakwira-molecular polysaccharide iripo muchirimwa maseru madziro. Chimiro chemakemikari cheHPMC chinonyanya kuumbwa nezvikamu zveglucose, ari mamorekuru echeni akabatanidzwa ne β-1,4 glycosidic bond. Mune iyi molecular chimiro, mamwe mapoka ehydroxyl anotsiviwa nemethyl (-OCH₃) uye hydroxypropyl (-C₃H₇OH), ichipa iyo yakanaka solubility uye zvimwe zvemuviri nemakemikari zvinhu.
Iyo solubility yeHPMC inobatwa neiyo molecular chimiro uye kazhinji ine zvinotevera maitiro:
Kunyungudika kwemvura: HPMC inogona kugadzira viscous mhinduro mumvura uye inonyungudika nekukurumidza. Kunyungudika kwayo kwakabatana zvakanyanya nekupisa kwemvura uye huremu hwemamolekyulu eHPMC.
Yakakwira viscosity: Pane imwe nzvimbo, mhinduro yeHPMC inoratidza yakakwira viscosity, kunyanya pahupamhi hwema molecular uremu uye yakanyanya kuwanda.
Thermal kugadzikana: HPMC ine kugadzikana kwakanaka pane imwe nhanho yekupisa uye haisi nyore kuora, saka ine zvimwe zvakanakira mukupisa kwekugadzirisa.
2. Solubility yeHPMC
HPMC chinhu chinonyungudika mumvura, asi hainyunguswi nezvose zvinonyungudutsa. Maitiro ayo ekunyungudika ane hukama ne polarity yezvinonyungudutsa uye kudyidzana pakati peanonyungudutsa mamorekuru uye HPMC mamorekuru.
Mvura: HPMC inogona kunyungudika mumvura. Mvura ndiyo inonyanya kunyungudutsa, uye panguva yekunyungudutswa, AnxinCel®HPMC mamorekuru anozogadzira mabhondi ehydrogen nemamorekuru emvura kuti awane kupera. Dhigirii rekuparara rinokanganiswa nezvinhu zvakaita sehuremu hwemamolekyulu eHPMC, dhigirii remethylation uye hydroxypropylation, tembiricha, uye pH kukosha kwemvura. Kazhinji, solubility yeHPMC ndiyo yakanyanya kunaka munzvimbo isina kwayakarerekera pH.
Organic solvents: HPMC inenge isinganyungudike mune zvakawanda organic solvents, akadai doro, ethers, uye hydrocarbons. Izvi zvinodaro nekuti chimiro chayo chemorekuru chine hydrophilic hydroxyl mapoka uye lipophilic methyl uye hydroxypropyl mapoka. Kunyangwe iine hukama hwakasimba hwemvura, haina kufambirana nemazhinji organic solvents.
Kunyungudika kwemvura inopisa: Mumvura inodziya (kazhinji 40 ° C kusvika 70 ° C), HPMC inonyungudika nekukurumidza uye mhinduro yakanyungudutswa inoratidzira yakakwira viscosity. Sezvo tembiricha ichiwedzera kuwedzera, chiyero chekunyungudika uye kunyungudika kuchawedzera, asi pakupisa kwakanyanya, viscosity yemhinduro inogona kukanganiswa.
3. Kushandiswa kweHPMC
Nekuda kwekunyungudika kwayo kwemvura, kuderera kwehuturu, uye kuchinjika viscosity, HPMC inoshandiswa zvakanyanya mumaindasitiri akasiyana.
Indasitiri yemishonga: Muindasitiri yemishonga, HPMC inoshandiswa zvakanyanya mukugadzirisa-kuburitswa kwemishonga, kuumba piritsi, gels, uye vatakuri vezvinodhaka. Inogona kubatsira zvinodhaka kunyungudika mumvura uye kugadzirisa mwero wekuburitswa kwezvinodhaka.
Indasitiri yechikafu: HPMC, sechikafu chekuwedzera, chinowanzo shandiswa emulsification, thickening, uye moisturizing. Muzvigadzirwa zvakabikwa, zvinogona kuvandudza ductility uye kugadzikana kwehupfu. HPMC inowanzoshandiswa mu ice cream, zvinwiwa uye kudya kwakaderera-mafuta.
Indasitiri yekuvaka: Muindasitiri yekuvaka, HPMC inowanzoshandiswa seyakakora yekuvaka dhaka, iyo inogona kuvandudza mashandiro ekuvaka, kuchengetwa kwemvura uye kusimba kwechisungo chedhaka.
Cosmetics: Muzvizoro, AnxinCel®HPMC inonyanya kushandiswa seyakakora, suspending agent uye stabilizer, uye inoshandiswa zvakanyanya muzvigadzirwa zvakaita semafuta ekumeso, shampoos, uye gels rekugeza.
HPMCinonyungudika nemvura uye yakanyanya viscous cellulose derivative inogona kuumba yakajeka colloidal mhinduro mumvura. Haisi inonyungudutsa, asi yakakwira molecular compound inogona kunyungudika mumvura. Kunyungudika kwayo kunonyanya kuratidzwa mukunyungudika kwakanaka mumvura, asi isinganyunguriki mune zvakawanda organic solvents. Aya maitiro eHPMC anoita kuti ishandiswe zvakanyanya mumaindasitiri mazhinji, anosanganisira emishonga, chikafu, kuvaka, uye zvizorwa.
Nguva yekutumira: Feb-17-2025