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Ama-cellulose ether ayiqembu lama-polymer emvelo aguquliwe atholakala ku-cellulose, okuyi-biopolymer etholakala kakhulu eMhlabeni. Njengezinto ezitholakala ku-cellulose, ama-cellulose ether agcina izici eziyisisekelo zesakhiwo se-cellulose ngenkathi ehlanganisa amaqembu e-ether athinta kakhulu ukuncibilika kwawo,...Funda kabanzi»
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I-Hydroxypropyl Methylcellulose (HPMC) kanye ne-Methyl Hydroxyethyl Cellulose (MHEC) yizinhlobo ezimbili ze-cellulose ethers ezisetshenziswa kakhulu ezitholakala ku-cellulose yemvelo, i-polymer etholakala ezindongeni zamaseli ezitshalo. Lezi zinhlanganisela ziguqulwa ngezinqubo zamakhemikhali ukukhiqiza izinto ezibonisa...Funda kabanzi»
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Ama-cellulose ether ayisigaba samakhemikhali e-polymer ancibilika emanzini atholakala ngokuguqulwa kwe-etherification kwe-cellulose yemvelo. I-Cellulose iyinto yemvelo ye-polymer etholakala kakhulu emhlabeni futhi itholakala kabanzi ezindongeni zamaseli ezitshalo. Isakhiwo sayo esiyisisekelo sakhiwe ngamayunithi e-glucose axhunywe yi-β-...Funda kabanzi»
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Ukusetshenziswa kwama-cellulose ethers ku-masonry kanye ne-plastering mortar kuyintuthuko ebalulekile kubuchwepheshe bezinto zokwakha zesimanje. Akugcini nje ngokuthuthukisa ukusebenza kokwakhiwa kanye nokusebenza kokubopha kwe-mortar, kodwa futhi kuthuthukisa ukugcinwa kwamanzi, ukusebenza kahle kanye nokuvikela ukugoba kwayo...Funda kabanzi»
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Ama-cellulose ether ayisigaba esibalulekile sezinto ze-polymer ezincibilika emanzini, ezisetshenziswa kabanzi ekwakheni, kwezokwelapha, ekudleni, kumakhemikhali ansuku zonke nakwezinye izimboni. Emkhakheni wokwakha (njengodaka oluxutshwe okomile, i-tile adhesive, i-putty powder, njll.), esinye sezimpawu ezibaluleke kakhulu ze-cellulo...Funda kabanzi»
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I-Hydroxypropyl Methylcellulose (HPMC) iyi-non-ionic cellulose ether esetshenziswa kabanzi ezintweni zokwakha, ikakhulukazi ku-cement mortar. Idlala indima ebalulekile ekulawuleni ukusebenza kwe-mortar ngenxa yokugcina amanzi kahle, ukuqina, ukuthambisa kanye nezakhiwo zayo zokwakha ifilimu. Noma kunjalo,...Funda kabanzi»
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I-Sodium Carboxymethyl Cellulose (CMC) iyinhlanganisela ebalulekile ye-polymer encibilika emanzini, esetshenziswa kabanzi ekwenzeni iphepha, ezindwangu, ekudleni, emithini, kumakhemikhali ansuku zonke nakweminye imikhakha. Embonini yokwenza iphepha, ikakhulukazi ekumbozeni iphepha (embozeni), i-CMC isibe ngomunye wemikhiqizo ebalulekile...Funda kabanzi»
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I-Hydroxyethyl cellulose (HEC) iyinto ebalulekile ye-polymer engeyona i-ionic encibilikayo emanzini, elungiswa ngokwelapha i-cellulose yemvelo nge-alkali bese isabela nge-ethylene oxide. Njenge-ejenti enezinto eziningi, esebenza kahle kakhulu, eqinisayo futhi eyakha ifilimu, i-HEC isetshenziswe kabanzi...Funda kabanzi»
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1. Kuyini Ibanga Lezimboni I-HPMC Ibanga Lezimboni I-HPMC (i-Hydroxypropyl Methylcellulose) iyi-non-ionic cellulose ether derivative, ngokuvamile ngesimo sempuphu emhlophe noma ephuzi kancane. Yenziwe ngemicu ye-cotton linter yemvelo ngokwelashwa kwe-alkali kanye nochungechunge lwezimpendulo zamakhemikhali (ezifana...Funda kabanzi»
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I-Hydroxypropyl Methylcellulose (HPMC) iyi-non-ionic cellulose ether, okuwumkhiqizo oguqulwe ngamakhemikhali owakhiwe ukusabela kwe-cellulose yemvelo nge-propylene oxide kanye ne-methyl chloride ngemva kokuhlanganiswa kwe-alkali. I-HPMC izinzile kahle ngokomzimba nangokwekhemikhali futhi isetshenziswa kabanzi kwezemithi,...Funda kabanzi»
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Njengoba izidingo zokonga amandla ezakhiwo zithuthuka njalo, ukusetshenziswa kwezinhlelo zokuvikela udonga lwangaphandle ensimini yokwakha kuya ngokuya kuba banzi. Udaka lokuvikela udonga olunwetshiwe (i-EPS) lusetshenziswa kabanzi ekwakheni ukuvikela udonga lwangaphandle...Funda kabanzi»
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I-Hydroxypropyl Methylcellulose (HPMC) iyi-non-ionic cellulose ether esetshenziswa kabanzi ekwakheni, kwezemithi, ekudleni, kwamakhemikhali nsuku zonke nakwezinye izimboni. Ngokusho kwe-viscosity yayo, i-HPMC ingahlukaniswa ibe yi-viscosity ephansi, i-viscosity ephakathi kanye namazinga aphezulu e-viscosity. Phakathi kwazo, i-HPMC ene-visco...Funda kabanzi»