I-high-viscosity hydroxypropyl methylcellulose ayikwazi ukuvelisa i-cellulose ephezulu kakhulu kuphela ngokufunxa kunye nokutshintshwa kwenitrogen kwimveliso.Ngokuqhelekileyo, ukuveliswa kwe-cellulose ephezulu ye-viscosity e-China ayikwazi ukulawulwa.Nangona kunjalo, ukuba isixhobo sokulinganisa i-oxygen singafakwa kwi-kettle, ukuveliswa kwe-viscosity yayo kunokulawulwa ngokufanelekileyo.Ukongeza, ukuqwalasela isantya endaweni ye-nitrogen, kulula ukuvelisa iimveliso eziphezulu ze-viscosity kungakhathaliseki ukuba le nkqubo ingenamoya kangakanani.Ewe kunjalo, inqanaba lepolymerization yomqhaphu osulungekileyo likwabalulekile.Ukuba oko akusebenzi, yenza oko kunye ne-hydrophobic association.Kukho iiarhente zombutho kule ndawo eTshayina.Luhlobo luni lwearhente yonxulumano oluya kukhetha olunempembelelo enkulu ekusebenzeni kwemveliso yokugqibela.
Ukuhanjiswa kokukhanya kwe-hydroxypropyl methylcellulose kuchaphazeleka ikakhulu ngala manqaku alandelayo:
1. Umgangatho wemathiriyeli ekrwada.
2. Umphumo we-alkalization.
3. Umlinganiselo wenkqubo.
4. Umlinganiselo wezinyibilikisi.
5. Isiphumo sokungathathi hlangothi.
I-oksijeni eseleyo equlethwe kwibhoyili iya kubangela ukuthotywa kwe-cellulose kunye nokunciphisa ubunzima be-molecular, kodwa i-oksijeni eseleyo iyancipha, ukuba kuphela ukudibanisa iamolekyu ezonakalisiweyo, okwenza i-viscosity ephezulu ibe lula.Nangona kunjalo, inqanaba lamanzi ahluthayo likwanonxibelelwano oluqinileyo kunye nenqanaba le-hydroxyproline.Ezinye iifektri zifuna nje ukunciphisa iindleko kunye nexabiso, kwaye azifuni ukwandisa umxholo we-hydroxyproline ukuze umgangatho ungagqithisi umgangatho weemveliso eziveliswa ngaphandle.Inqanaba lokhuseleko lemveliso linxulumene nephenol yamanzi, kodwa ngokubanzi, inkqubo yokusabela nayo imisela iqondo lokugcinwa kwayo, umlinganiselo wealkali, imethyl chloride kunye nepropylene oxide, ukuxinwa kwealkali kunye nomlinganiselo wamanzi kunye nomqhaphu umisela ukusebenza kwayo. .
Ixesha lokuposa: Apr-23-2023