Mefuta ea Cellulose ether ke efe?

Cellulose ethers ke sehlopha se fapaneng sa li-polymers tse nkiloeng ho cellulose, polysaccharide ea tlhaho e fumanoang limela. Li sebelisoa haholo liindastering tse fapaneng, ho kenyeletsoa kaho, meriana, lijo, litlolo le tlhokomelo ea motho ka mong, ka lebaka la thepa ea tsona e ikhethang le ho ikamahanya le maemo. Mona ke tse ling tsa mefuta e atileng haholo ea cellulose ether:

1. Methyl Cellulose (MC):
   • Methyl cellulose e hlahisoa ka ho phekola selulose ka methyl chloride ho hlahisa lihlopha tsa methyl mokokotlong oa cellulose.
   • E qhibiliha metsing a batang 'me e etsa litharollo tse hlakileng, tse hlakileng.
   • MC e sebelisoa e le sekontiri, se tlamang, le se tsitsisa lits'ebetsong tse ngata tse fapaneng, ho kenyeletsoa lisebelisoa tsa kaho (mohlala, lirekere tse thehiloeng ho samente, li-plaster tse entsoeng ka gypsum), lihlahisoa tsa lijo, meriana, le lintho tsa tlhokomelo ea motho.
2. Hydroxyethyl Cellulose (HEC):
   • Hydroxyethyl cellulose e entsoe ka ho arabela selulose ka ethylene oxide ho hlahisa lihlopha tsa hydroxyethyl mokokotlong oa cellulose.
   • E qhibiliha ka metsing a batang 'me e etsa litharollo tse hlakileng, tse hlakileng tse nang le thepa e ntle ea ho boloka metsi.
   • HEC e atisa ho sebelisoa e le motenya, mofetoleli oa rheology, le moemeli oa ho etsa lifilimi ka lipente, li-adhesive, lihlahisoa tsa tlhokomelo ea botho, le meriana.
3. Hydroxypropyl Methyl Cellulose (HPMC):
   • Hydroxypropyl methyl cellulose e hlahisoa ka ho hlahisa hydroxypropyl le lihlopha tsa methyl mokokotlong oa cellulose.
   • E bonts'a thepa e ts'oanang le methyl cellulose le hydroxyethyl cellulose, ho kenyelletsa le ho qhibiliha ha metsi, bokhoni ba ho etsa lifilimi, le ho boloka metsi.
   • HPMC e sebelisoa haholo linthong tsa kaho (mohlala, likhomaretsi tsa lithaele, li-renders tse thehiloeng ho samente, metsoako ea ho ikemela), hammoho le litlhare, lihlahisoa tsa lijo, le lintho tsa tlhokomelo ea motho.
4. Carboxymethyl Cellulose (CMC):
   • Carboxymethyl cellulose e tsoa ho selulose ka ho e phekola ka sodium hydroxide le monochloroacetic acid ho hlahisa lihlopha tsa carboxymethyl.
   • E qhibiliha ka metsing 'me e etsa litharollo tse hlakileng, tse nang le li-viscous tse nang le thepa e ntle haholo ea ho tiisa, ho tsitsisa le ho boloka metsi.
   • CMC e atisa ho sebelisoa e le motenya, binder, le rheology modifier lihlahisoa tsa lijo, meriana, masela, pampiri, le lisebelisoa tse ling tsa kaho.
5. Ethyl Cellulose (EC):
   • Ethyl cellulose e hlahisoa ka ho arabela selulose ka ethyl chloride ho hlahisa lihlopha tsa ethyl mokokotlong oa cellulose.
   • Ha e qhibilihe ka metsing empa e qhibiliha ka har'a metsoako ea tlhaho e kang ethanol le chloroform.
   • EC e atisa ho sebelisoa e le moemeli oa ho etsa lifilimi, binder, le lisebelisoa tse koahelang meriana, lihlahisoa tsa lijo, litlolo, le lisebelisoa tsa indasteri.

Ena ke e meng ea mefuta e sebelisoang haholo ea cellulose ether, e 'ngoe le e' ngoe e fana ka thepa e ikhethang le melemo bakeng sa lits'ebetso tse fapaneng. Li-ether tse ling tse khethehileng tsa cellulose le tsona li ka ba teng, tse etselitsoeng litlhoko tse ikhethang liindastering tse fapaneng.