Hydroxypropyl methyl cellulose (HPMC) waa polymer aan-ionic ahayn, eter cellulose aan ionic ahayn oo laga sameeyay walxaha polymer-ka dabiiciga ah. Alaabtu waa mid aan ur lahayn, dhadhamin, budo cad oo aan sun ahayn, waxaa lagu milmi karaa biyo qabow si loo sameeyo xal hufan oo hufan, oo leh dhumuc, isku xidhid, kala firdhisan, emulsifying, filim-samaynta, joojinta, adsorbing, gelling, dhaqdhaqaaqa dusha sare, Tilmaamaha sida sida xajinta qoyaanka iyo kolloysyada ilaalinta.
Heerarka degdega ah ee HPMC waxaa inta badan loo isticmaalaa kiimikooyinka dharka, alaabta nadiifinta kiimikada maalinlaha ah, qurxinta iyo qaybaha kale; sida shaambada, maydhista jidhka, nadiifiyaha wejiga, labeenta, kareemka, jel, toner, timaha qaboojiyaha, alaabta habaynta, daawada cadayga, candhuufta, biyaha xumbo-cayaaraha, iwm.
Astaamaha wax soo saarka ee darajada maalinlaha ah ee kiimikada hydroxypropyl methyl cellulose inta badan waxaa ka mid ah:
1. Qalabka ceeriin ee dabiiciga ah, xanaaq yar, waxqabadka khafiifka ah, badbaadada iyo ilaalinta deegaanka;
2. Biyo-millan iyo dhumuc: waxa lagu milmi karaa biyo qabow isla markiiba, ku milmi kara qaar ka mid ah dareerayaasha organic iyo isku dhafka biyaha iyo dareerayaasha organic;
3. Dhumucda iyo viscosity-kordhinta: kororka yar ee kala-baxa wuxuu sameyn doonaa xal hufan oo hufan, daah-furnaan sare, waxqabadka xasilloon, isbeddelka milanka leh ee viscosity, hoose ee viscosity, weynaanta milanka; si wax ku ool ah u wanaajiso xasilloonida socodka nidaamka;
4. Iska caabinta milixda: HPMC waa polymer-ka aan-ionic-ka ahayn, oo yara deggan xalalka aqueous ee cusbada birta ah ama electrolytes organic;
5. Dhaqdhaqaaqa dusha sare: xalalka aqueous ee alaabtu waxay leedahay hawlo dusha sare ah, waxayna leedahay hawlaha iyo sifooyinka emulsification, kolloid ilaalin iyo xasillooni; xiisadda dusha sare waa: 2% xal aqueous waa 42-56dyn / cm;
6. xasiloonida PH: viscosity ee xalka aqueous waa mid degan inta u dhaxaysa PH3.0-11.0;
7. Saamaynta biyaha-haysashada: hantida hydrophilic ee HPMC waxaa lagu dari karaa slurry, koollada iyo alaabta baastada si loo ilaaliyo saamaynta sare ee biyaha;
8. Thermal gelation: Marka dareeraha biyaha lagu kululeeyo heer kul gaar ah, waxa uu noqdaa mid madmadow ilaa uu ka sameeyo xaalad qulqulaya (poly), taas oo ka dhigaysa in xalku lumiyo viscosity-kiisa. Laakin ka dib qaboojinta, waxay mar kale u rogi doontaa xalalka asalka ah. Heerkulka uu ku dhaco ifafaale jel wuxuu ku xiran yahay nooca badeecada, xoojinta xalka iyo heerka kuleylka;
9. Sifooyin kale: sifooyinka filim-samaynta fiican, iyo tiro balaadhan oo ah caabbinta enzyme, kala firdhisanaanta iyo isku-duubnida, iwm.
Waqtiga boostada: Jun-05-2023