HPMC semushonga unochengetedza mvura

Hydroxypropyl Methylcellulose (HPMC)i non-ionic cellulose ether, inova semi-synthetic polymer compound yakagadzirwa nemakemikari akasiyana-siyana akadai se alkalization uye etherification ye natural polymer cotton fiber. Nekuda kwehunhu hwayo hwakanaka hwepanyama uye hwemakemikari, biocompatibility uye kuchengetedzeka, HPMC inoshandiswa zvakanyanya muminda yakawanda senge zvinhu zvekuvaka, mishonga, chikafu, makemikari ezuva nezuva, ceramics, nezvimwewo, kunyanya muminda inoda hunhu hwekuchengetedza mvura, inoratidza mabhenefiti anoshamisa.

1. Hunhu hwekutanga hweHPMC

HPMC ihupfu huchena kana husina kuchena hwakaita se fibrous kana granular, hunonyungudika nyore mumvura inotonhora, asi husinganyungudike mumvura inopisa, ethanol, ether nezvimwe zvinonyungudutsa zvakasikwa. Mhinduro yayo ine hunyoro hwakanaka, inoita firimu, inonamira uye inochengetedza mvura. Pamusoro pezvo, mhinduro yeHPMC yakagadzikana mune pH yakakura (3~11) uye ine thermal gelation, kureva kuti, inogona kugadzira chimiro chegel chinodzoserwa patembiricha yakati.

2. Nzira yekuchengetedza mvura

Maitiro makuru eHPMC semushonga unochengetedza mvura anonyanya kuratidzwa nekugona kwayo kunyungudutsa mvura zvakanyanya mushure mekugadzira mhinduro inonamira. Kune mapoka akawanda anonyungudutsa mvura (akadai semapoka ehydroxyl ne ether) muchimiro chayo chemamorekuru, ayo anogona kuumba hydrogen bonds nemamorekuru emvura, zvichiita kuti nguva yehunyoro iwedzere zvakanyanya. Kana HPMC yanyungudutswa mumvura, inogona kuumba network structure ine mativi matatu yekuputira mvura, ichideredza kurasikirwa nekubuda kwemvura mumuviri. Panguva imwe chete, hunhu hwayo hwe thermal gel hunoigonesa kuumba gel kana yadziiswa, zvichidzivirira kufamba kwemvura uye kugadzirisa kugadzikana kwemuviri.

3. Kushandiswa kweHPMC kuchengetedza mvura muminda yakasiyana

3.1. Munda wezvinhu zvekuvaka

Muindasitiri yekuvaka, HPMC inowanzo wedzerwa mudhaka, gypsum, mataira anonamira, pasi rinozvienzanisa nezvimwe zvigadzirwa sechinochengetedza mvura uye chinoikurisa. Mushure mekuwedzera HPMC mudhaka resimende, mwero wayo wekuchengetedza mvura unogona kuvandudzwa zvakanyanya, zvichidzivirira simende kuti isatsemuke nekuda kwekurasikirwa nemvura zvakanyanya, izvo zvinobatsira simende kuti iwane mvura yakakwana uye kuvandudza simba rekubatanidza uye mashandiro ekuvaka. Panguva imwe chete, kana kuchipisa kana mamiriro epasi anonyudza mvura zvakanyanya, HPMC inogona kudzivirira nekukurumidza kubuda kwemvura mudhaka uye kuona kuti kuvaka kwakanaka.

3.2. Nzvimbo yekurapa

Muindasitiri yemishonga, HPMC inoshandiswa zvakanyanya mukugadzira mapiritsi, zvinhu zvine mapfupa, zvinhu zvinodzorwa, nezvimwewo. Kushanda kwayo zvakanaka kuchengetedza mvura kunogona kuumba chidziviriro checolloidal mumuviri, kudzora huwandu hwemushonga unoburitswa, uye kuvandudza kuwanikwa kwemishonga. Mukugadzira maziso uye kubvaruka kwekugadzira, HPMC inoshandiswa semafuta uye moisturizer kuderedza zviratidzo zvemaziso akaoma.

3.3. Indasitiri yezvekudya

HPMC inowanzoshandiswa semushonga unosanganisa mvura, chinhu chinochengetedza mvura uye chinosimbisa kugadzirwa kwechikafu. Kunyanya mushure mekuiisa muzvikafu zvakabikwa, inogona kunonoka kubuda kwemvura mumukaka uye kunatsiridza kuravira uye hupenyu hwesherufu yechigadzirwa chapera. Semuenzaniso, muchingwa chisina gluten, HPMC inogona kutsiva chimiro chegluten, kugadzira network ye colloidal, kuchengetedza hunyoro uye kuvandudza kushanda kwemukaka.

3.4. Zvizoro nemakemikari ezuva nezuva

Muzvigadzirwa zvemakemikari zvezuva nezuva zvakaita seshampoo, lotion, uye kirimu, HPMC, semunyorovesa uye mutsigiri, inogona kunwisa hunyoro munzvimbo uye kuderedza hunyoro, ichivandudza magadzirirwo uye hunyorovesa hwechigadzirwa. Pamusoro pezvo, HPMC inogonawo kuvandudza kugadzikana uye kunamira kwechigadzirwa uye kuwedzera kusimba kweganda.

4. Zvinhu zvinokanganisa mashandiro ekuchengetedza mvura

Kushanda kweHPMC kuchengetedza mvura kunokanganiswa nezvinhu zvakawanda:

Dhigirii rekutsiva (DS) uye molar substitution (MS): Kuchinja kwemvura kweHPMC kwakabatana zvakanyanya nedhigirii rekutsiva hydroxypropyl nemethyl mumamorekuru ayo. Dhigirii rekutsiva rakakwirira, ndiko kusimba kwesimba rekuchengetedza mvura.

Giredhi rekusviba:HPMC ine magiredhi akasiyana ekupenya(senge 400, 15000, 100000 mPa·s, nezvimwewo). Kana viscosity yakakwira, zvinoita kuti kuchengetedza mvura kuwedzere, asi nguva yekunyungudika inowedzerawo zvinoenderana.

Huwandu hwekuwedzera: Kuwedzera kwakakodzera kunogona kuvandudza mashandiro ekuchengetedza mvura zvakanyanya, asi kuwedzera kwakanyanya kunogona kukonzera kuti mhinduro yacho ive yakamanikana zvakanyanya, zvichikanganisa kuvaka kana kushandiswa kwayo.

Kupisa kwenzvimbo uye hunyoro: Kupisa kwakanyanya kunokurumidza kupwanya mvura, uye gelation yeHPMC inoita basa rakakosha panguva ino kuderedza kurasikirwa kwemvura; munzvimbo ine hunyoro hwakawanda, hygroscopicity yayo inoonekwa zvakanyanya.

5. Mafambiro Ebudiriro Netarisiro

Nekugadzirwa kwezvinhu zvekuvaka zvakasvibira, chikafu chinoshanda, masisitimu ekuburitsa mishonga akangwara uye mamwe mabasa, kudiwa kwezvinhu zvinoburitsa mvura zvisina njodzi, zvinoshanda uye zvinodzorwa kuri kuwedzera. HPMC, semushonga unochengetedza mvura usina njodzi, ine mikana yakawanda yekushandisa. Nzira dzekutsvaga mune ramangwana dzinogona kutarisa pakugadzirwa kweHPMC yakagadziriswa kuti iwedzere kunyunguduka kwayo, kuburitsa mvura kwakarongeka uye kuora kwayo kuti isangane nezvinodiwa zvekushandisa mumamiriro ezvinhu akasiyana.

Hydroxypropyl methylcellulose yave chinhu chinobatsira zvikuru mumaindasitiri mazhinji nekuda kwekushanda kwayo kwakanaka, kuchengetedzeka uye kushanduka-shanduka kwemvura. Nekufambira mberi kwetekinoroji uye kuwedzera kwekushandiswa kwayo, basa reHPMC mubasa rekuchengetedza mvuraicharamba ichinyanya kuzivikanwa, uye icharamba ichiita basa rayo rakanaka muminda yemakemikari akasvibirira, mishonga, chikafu nedzimwe nzvimbo.