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Izakhiwo ezijwayelekile zama-ether amabili e-cellulose zinikezwe kuZithombe 1.1 no-1.2. Igilebhisi ngalinye eliphelelwe amanzi yi-β-D le-molecule ye-cellulose Iyunithi kashukela (iyunithi ephindaphindayo ye-cellulose) ithathelwa indawo yiqembu elilodwa le-ether ngalinye ezikhundleni ze-C(2), C(3) kanye ne-C(6), okungukuthi kufike kwabathathu eqenjini le-ether. Ngoba...Funda kabanzi»
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Kokubili i-hydroxypropyl methylcellulose kanye ne-hydroxyethyl cellulose kuyi-cellulose, uyini umehluko phakathi kwalokhu okubili? “Umehluko Phakathi kwe-HPMC ne-HEC” 01 I-HPMC ne-HEC I-Hydroxypropyl methylcellulose (Hypromellose), eyaziwa nangokuthi i-hypromellose, uhlobo lwe-non-ionic cellulose exubile...Funda kabanzi»
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Izakhiwo eziyinhloko ze-hydroxyethyl cellulose ukuthi iyancibilika emanzini abandayo nasemanzini ashisayo, futhi ayinazo izakhiwo ze-gelling. Inezinga elibanzi lokushintsha, ukuncibilika kanye ne-viscosity. Isixazululo se-hydroxyethyl cellulose singakha ifilimu esobala, futhi...Funda kabanzi»
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Indima ye-hydroxypropyl methylcellulose ku-putty Kusukela ekuqineni, ukugcinwa kwamanzi kanye nokwakhiwa kwemisebenzi emithathu. Ukuqina: I-Cellulose ingaqiniswa ukuze imiswe, igcine isisombululo sifana futhi sihambisana, futhi imelane nokugoba. Ukugcinwa kwamanzi: Yenza impuphu ye-putty yome kancane, futhi isize...Funda kabanzi»
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Ama-ether e-cellulose asetshenziswa kakhulu afaka phakathi i-HEC, i-HPMC, i-CMC, i-PAC, i-MHEC nokunye okunjalo. I-ether ye-cellulose engeyona i-ionic encibilikayo emanzini inokunamathela, ukuqina kokusabalala kanye namandla okugcina amanzi, futhi iyisengezo esivame ukusetshenziswa ezintweni zokwakha. I-HPMC, i-MC noma i-EHEC isetshenziswa kakhulu ezintweni ezisekelwe kusimende noma e-gyp...Funda kabanzi»
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I-Hydroxypropyl methylcellulose (HPMC) Isigaba: izinto zokumboza; Izinto ze-membrane; Izinto ze-polymer ezilawulwa ngesivinini zokulungiselela ukukhulula kancane; I-ejenti yokuzinzisa; Usizo lokumiswa, ingcina yethebhulethi; I-ejenti yokunamathela eqinisiwe. 1. Isingeniso somkhiqizo Lo Mkhiqizo UYI-ETHERI YE-CELLULOSE ENGEN-IONIC...Funda kabanzi»
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I-Hydroxypropyl methylcellulose iyingozi Izinto zokusetshenziswa ze-hydroxypropyl methyl cellulose ziwukotini ocoliwe. Ayinangozi emzimbeni womuntu. Izonamathela ekhaleni uma isondelene, kodwa ngeke ingene emaphashini. Uma usebenza efektri, kunconywa ukuthi ugqoke imaski. I-Hydroxyp...Funda kabanzi»
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Ukwakha i-hydroxypropyl methyl cellulose ekhethekile ukugwema ukungena komswakama odongeni, kuzoba inani elifanele lomswakama elingahlala ku-mortar, i-samente ikhiqiza ukusebenza okuhle emanzini futhi indima ye-hydroxypropyl methyl cellulose ku-mortar ingalingana ne-viscosi...Funda kabanzi»
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Ifomula ye-putty engu-821: 821 isitashi sasingu-3.5 kg 2488 3kg I-Hpmc ingu-2.5 kg Ifomula yokugqoka nge-plaster: 600kg i-gypsum eluhlaza okwesibhakabhaka, Impuphu emhlophe enkulu engu-400kg, I-Guar gum engu-4kg, I-Wood fibre engu-2kg, I-HPMC2kg, Inani elifanele le-citric acid. Ngokusekelwe kufomula ephakanyisiwe ngokwesimo sangempela sezinto zokusetshenziswa ...Funda kabanzi»
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I-Hydroxypropyl methyl cellulose ihlukaniswe izinhlobo ezimbili zohlobo oluvamile olushisayo – olubandayo oluncibilikayo – olumanzi – oluncibilikayo. 1, uchungechunge lwe-gypsum emikhiqizweni yochungechunge lwe-gypsum, i-cellulose ether isetshenziswa kakhulu ukugcina amanzi nokwandisa ubushelefu. Zombili zinikeza impumuzo ethile. Ingaxazulula...Funda kabanzi»
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1, iyini ukusetshenziswa okuyinhloko kwe-hydroxypropyl methyl cellulose (HPMC)? I-HPMC isetshenziswa kabanzi ezintweni zokwakha, ezimbozweni, ezinhlayiyeni zokwenziwa, ezitsheni zobumba, kwezokwelapha, ekudleni, ezindwangu, kwezolimo, ezimonyweni, egwayi nakwezinye izimboni. I-HPMC ingahlukaniswa ibe: izinga lokwakha, izinga lokudla kanye nezinga lezokwelapha...Funda kabanzi»
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I-Hydroxypropyl methyl cellulose (HPMC) iyi-fiber yemvelo ye-polymer ngokusebenzisa uchungechunge lokucubungula kwamakhemikhali nokulungiselela i-non-ionic cellulose ether. Uchungechunge lwe-DB HPMC luwumkhiqizo we-cellulose ether oguquliwe oncibilika kakhulu emanzini futhi othuthukiswe ngokukhethekile ukuthuthukisa ukusebenza kwe-m...Funda kabanzi»