Polyanionic cellulose (PAC) ke motsoako oa selulose o fetotsoeng o sebelisoang haholo lits'ebetsong tse fapaneng tsa indasteri.Polymer ena e feto-fetohang e tsoa ho cellulose, polysaccharide ea tlhaho e fumanehang maboteng a lisele tsa semela.Phetoho e kenyelletsa ho kenyelletsoa ha lihlopha tsa anionic mokokotlong oa cellulose, ka hona ho eketsa ho qhibiliha ha metsi le ho ntlafatsa thepa ea rheological.PAC e hlahisoang e na le thepa e ikhethang e etsang hore e be ea bohlokoa indastering ea oli le khase, tlhahiso ea lijo, meriana le tse ling.
Cellulose ke polymer e nang le linear e entsoeng ka likaroloana tse pheta-phetoang tsa tsoekere tse hokahantsoeng ke β-1,4-glycosidic bond.E ngata ka tlhaho mme ke karolo ea sebopeho sa marako a lisele tsa semela.Leha ho le joalo, cellulose ea tlhaho e na le ho qhibiliha ho fokolang metsing ka lebaka la li-intermolecular hydrogen bond tse matla.Ho hlola moeli ona, cellulose ea polyanionic e ile ea etsoa ka letoto la liphetoho tsa lik'hemik'hale.
Mokhoa o tloaelehileng oa tlhahiso ea PAC o kenyelletsa karabelo ea etherification kapa esterification.Nakong ea lits'ebetso tsena, lihlopha tsa anionic, joalo ka lihlopha tsa carboxylate kapa sulfonate, li kenngoa ka liketane tsa cellulose.Sena se fa polymer tefiso e mpe, e etsa hore e qhibilihe ka metsing le ho e fa thepa e ikhethang.Tekanyo ea ho fapanyetsana kapa palo ea lihlopha tsa anionic ho yuniti ea tsoekere e ka lokisoa ho lokisa thepa ea sephetho sa PAC ho fihlela litlhoko tse ikhethileng tsa ts'ebeliso.
E 'ngoe ea ts'ebeliso ea mantlha ea PAC ke indastering ea oli le khase, moo e sebelisoang e le tlatsetso ea mantlha marong a ho cheka.Mekelikeli ea ho cheka, e tsejoang hape e le seretse, e phetha karolo ea bohlokoa ts'ebetsong ea ho cheka liliba tsa oli le khase, ho kenyelletsa le ho pholisa karolo ea ho phunya, ho tsamaisa likotoana holimo, le ho boloka botsitso ba seliba.Ho kenyelletsa PAC ho maro a ho cheka ho laola thepa ea eona ea rheological, joalo ka viscosity le tahlehelo ea mokelikeli.E sebetsa joalo ka tackifier, e thibelang lintho tse tiileng ho thella le ho etsa bonnete ba ho emisa ka mokhoa o nepahetseng mokelikeli.
Thepa ea rheological ea PAC e ka hlophisoa hantle ho fihlela tekano e lakatsehang lipakeng tsa viscosity le taolo ea tahlehelo ea mokelikeli.Sena ke sa bohlokoa haholo bakeng sa ts'ebetso ea ho cheka tlas'a maemo a fapaneng, joalo ka libopeho tse fapaneng le mocheso.Ho qhibiliha ha metsi ha PAC ho boetse ho etsa hore ho be bonolo ho tsoakana le maro a chekang, 'me botsitso ba eona ho pholletsa le mefuta e fapaneng ea maemo a pH e ntlafatsa ts'ebeliso ea eona tšimong.
Ntle le karolo ea eona ea ho cheka maro, PAC e sebelisoa lits'ebetsong tse ling tse fapaneng.Indastering ea lijo, e sebelisoa e le seteifatsi le se tsitsisa lihlahisoa tse kang liaparo tsa salate, li-sauces le lihlahisoa tsa lebese.Bokhoni ba eona ba ho ntlafatsa viscosity le ho laola sebopeho se etsa hore e be ea bohlokoa mefuteng moo thepa ena e leng bohlokoa.
Indasteri ea meriana e boetse e sebelisa li-PAC e le lithuso tsa ho etsa litlhare.E ka kenyeletsoa litlolong tsa matlapa le litlhophiso tsa tokollo e laoloang ho fetola litekanyetso tsa ho lokolloa ha lithethefatsi.Biocompatibility le chefo e tlase ea PAC e kenya letsoho ho amoheloeng ha eona lits'ebetsong tsa meriana.
Ho feta moo, PAC e fumane lits'ebetso lits'ebetsong tsa kalafo ea metsi.Sebopeho sa eona sa anionic se e lumella hore e sebelisane le likaroloana tse nang le chelete e ntle, e thusang ho tlosa litšila metsing.Tabeng ena, e sebetsa e le flocculant kapa coagulant, e khothalletsang ho bokellana ha likaroloana e le hore ho be bonolo ho li tlosa ka sedimentation kapa filtration.
Leha e na le ts'ebeliso e atileng, litaba tse ka bang teng tsa tikoloho le ts'ebetso e amanang le tlhahiso le ho lahla PAC li tlameha ho nahanoa.Bafuputsi le indasteri ba ntse ba tsoela pele ho hlahloba k'hemistri e tala le mehloli e meng ea selulose ho rarolla mathata ana.
Polyanionic cellulose ke mohlala o hlahelletseng oa hore na phetoho ea lik'hemik'hale e ka fetola lipolymer tsa tlhaho joang hore e be lisebelisoa tse sebetsang ka mefuta e fapaneng ea ts'ebeliso.Karolo ea eona liindastering tse kang oli le khase, lijo le meriana e totobatsa ho feto-fetoha ha eona le bohlokoa bo tsoelang pele ba lihlahisoa tsa cellulose mekhoeng ea kajeno ea tlhahiso.Ha theknoloji e ntse e hatela pele le tlhoko ea litharollo tse tšoarellang e ntse e hola, ho batla mekhoa e se nang tikoloho ea tlhahiso ea PAC le lits'ebetso tsa eona ho kanna ha tsoela pele ho hola.
Nako ea poso: Dec-19-2023