Methylcellulose isanganiswa uye inoshanda zvakasiyana-siyana ine mashandisirwo muakasiyana maindasitiri nekuda kweiyo yakasarudzika zvivakwa.Iyi polysaccharide inotorwa kubva ku cellulose inozivikanwa nekugona kwayo kutamba mabasa akasiyana mundima dzakasiyana.
Kemikari zvimiro zve methylcellulose:
Methylcellulose inogadzirwa kuburikidza ne etherification ye cellulose, yakasikwa polymer inowanikwa muchirimwa sero madziro.Cellulose inoumbwa nemayuniti eglucose akabatanidzwa ne β-1,4-glycosidic bonds.Iyo etherification process inosanganisira kutsiva hydroxyl mapoka mune cellulose chimiro nemapoka emethyl.Uku kugadziridzwa kwemakemikari kunopa inoguma methylcellulose yakasarudzika zvivakwa, zvichiita kuti inyungudika mumvura mune mamwe mamiriro.
Iyo dhigirii yekutsiva (DS) inomiririra avhareji nhamba yemapoka ehydroxyl anotsiviwa nemapoka emethyl kune yega yega glucose unit mucheni ye cellulose, inokanganisa kunyungudika, viscosity uye kugona kwegel-kuumba kwemethylcellulose.Sezvo DS inowedzera, kunyungudika mumvura uye kushanduka-siyana kwekomboni kunowedzera.
Zviratidzo zve methylcellulose:
Kunyungudika kweMvura: Chimwe chezvikonzero zvikuru zvekushandiswa kwakapararira kwemethylcellulose ndiko kunyungudika kwayo kwemvura.Inoratidza hunhu hwakasiyana-siyana mumagadzirirwo emvura - kugadzira gel yakajeka uye viscous kana yakanyungudutswa mumvura inotonhora.Ichi chivakwa chakakosha mukushandisa kubva kuindasitiri yechikafu kusvika kune yemishonga.
Thermal gelation: Methylcellulose inopinda inodzokororwa gelation process zvichienderana nekupisa.Kana ichipisa, mhinduro ine mvura yemethylcellulose inoumba gel, uye pakutonhora, gel inodzokera kune mhinduro.Iyi pfuma inonyanya kukosha mukugadzirwa kwemajeri uye maitiro anodzorwa ekutumira zvinodhaka.
Mafirimu-ekugadzira masimba: Methylcellulose inoumba akajeka uye anochinjika mafirimu akakodzera kunyorera muindasitiri yezvekudya senge machira, anonamira uye anodyika mafirimu.Mafirimu-ekugadzira zvimiro zvinokanganiswa nezvinhu zvakaita sekutarisa, tembiricha uye kuvapo kwezvimwe zvinowedzera.
Rheological properties: Methylcellulose inoratidza shear kuonda maitiro, zvinoreva kuti viscosity yayo inodzikira pasi pekunetseka kweshear.Ichi chivakwa chinobatsira mumashandisirwo akadai sependi uko kuri nyore application kunodiwa uye zvinhu zvinoda kudzoreredza viscosity yayo mushure mekushandisa.
Biocompatibility: Biocompatibility yemethylcellulose yakakosha mumishonga uye biomedical application.Inowanzoonekwa seyakachengetedzeka kuti ishandiswe mukugadzirira kwemishonga nekuti haina chepfu uye haina chepfu.Izvi zvakakonzera kuti ibatanidzwe mune zvakasiyana siyana zvemishonga zvigadzirwa, zvinosanganisira ophthalmic mhinduro uye inodzorwa-kuburitsa dhizaini masisitimu.
Zvikumbiro zve methylcellulose:
indasitiri yezvekudya:
Thickening agent: Methylcellulose inoshandiswa seyakakora muzvigadzirwa zvekudya zvakaita sesosi, madhirezi uye soups nekuda kwekugona kwayo kupa viscosity pasina kushandura kunaka kana kutaridzika kwechigadzirwa chekupedzisira.
Kutsiviwa kwemafuta: Mumafuta akaderera kana asina mafuta-asina mafuta ekudya, methylcellulose inogona kutevedzera magadzirirwo uye muromo wemafuta, ichiwedzera ruzivo rwekunzwa.
mushonga:
Tablet Binders: Methylcellulose inoshandiswa sebhainda muindasitiri yemishonga kuti ivandudze kubatana kwezvigadzirwa zvemahwendefa uye kuve nechokwadi chekuti mapiritsi anoramba akasimba panguva yekugadzira nekushandisa.
Ophthalmic Solutions: Kujeka kwemethylcellulose mune aqueous solutions inoita kuti ive yakakodzera kune ophthalmic applications senge madonhwe emeso uye yekuonana lens mhinduro.
Indasitiri yekuvaka:
Cement uye Mortar Additives: Methylcellulose inowedzerwa kune simende uye dhaka maumbirwo ekuvandudza kushanda, kuchengetedza mvura uye kunamatira.Inodzivirira kuoma nekukurumidza, zvichibvumira kushandiswa kuri nani uye kuporesa.
Paints uye Coatings:
Thickeners uye Stabilizers: Methylcellulose inoshandiswa seyakakora uye inodzikamisa mumvura-yakavakirwa pendi uye machira kuti ibatsire kuzadzisa inodiwa uye kudzivirira pigment kugadzirisa.
Indasitiri yemachira:
Sizing mumiriri: Mukugadzira machira, methylcellulose inoshandiswa senge saizi mumiriri kuwedzera kutsetseka uye kusimba kwemafiber.Inopa chivharo chekudzivirira panguva yekuruka uye inodzivirira kuputsika kwefiber.
Zvigadzirwa zvekuchengeta wega:
Cosmetic magadzirirwo: Methylcellulose inosanganisirwa muzvizoro zvakaita semafuta uye lotions nekuda kweiyo emulsion kudzikamisa uye kukora zvivakwa.
Indasitiri yeOiri neGasi:
Drilling Fluid Additive: Methylcellulose inoshandiswa mukuchera zvinwiwa muindasitiri yeoiri negasi kudzora viscosity uye kurasikirwa kwemvura kuti ive nechokwadi chekushanda kwekuchera.
Pepa uye kurongedza:
Coating Additive: Methylcellulose inoshandiswa sechinhu chinowedzera chekuputira pamapepa uye kuvhara zvinhu zvekurongedza kuti zvivandudze kudhindwa, kutsetseka kwepamusoro uye kudzivirira mvura.
Detergent:
Stabilizers muDetergents: Methylcellulose inogona kuwedzerwa kumvura yekuchenesa sechigadziro chekudzivirira kuparadzaniswa kwechikamu uye kugadzirisa kugadzikana kwese kwekugadzirisa.
Biomedical applications:
Drug Delivery Systems: Methylcellulose inoshandiswa kugadzira inodzorwa-kuburitsa dhizaini masisitimu, uye yayo thermogelling zvimiro inobvumira kuburitswa kwezvinodhaka nekufamba kwenguva.
3D kudhinda:
Zvinhu zvekutsigira: Mukudhinda kwe3D, methylcellulose inogona kushandiswa sechinhu chekutsigira, chinogona kubviswa nyore nyore mushure mekudhindwa nekuda kwekunyungudika kwemvura.
Methylcellulose yakanakisa uye inoshanda zvakasiyana-siyana ine maapplication kune akasiyana maindasitiri.Kusanganiswa kwayo kwakasarudzika kwekunyungudika kwemvura, kupisa gelling, kugona kugadzira firimu uye biocompatibility inoita kuti ive chinhu chakakosha mukudya, mishonga yemishonga, zvekuvaka, pendi, machira, zvigadzirwa zvekuchengeta munhu nezvimwe.Sezvo tekinoroji neindasitiri zvichiramba zvichifambira mberi, kuchinjika kwemethylcellulose kunovimbisa kukosha kwayo uye kuenderera mberi kwekushandisa mukuzadzisa zvinoshanduka zvinodikanwa zvemaindasitiri akasiyana.
Nguva yekutumira: Zvita-21-2023