Hydroxyethylcellulose (HEC) le hydroxypropylcellulose (HPC) ka bobeli li tsoa ho cellulose, polima ea tlhaho e fumanehang maboteng a lisele tsa semela. Li-derivatives tsena tsa cellulose li sebelisoa haholo liindastering tse fapaneng ka lebaka la thepa ea tsona e ikhethang.
Sebopeho sa lik'hemik'hale:
Hydroxyethylcellulose (HEC):
HEC e entsoe ka ho arabela selulose ka ethylene oxide.
Ka sebopeho sa lik'hemik'hale tsa HEC, lihlopha tsa hydroxyethyl li kenngoa mokokotlong oa cellulose.
The degree of substitution (DS) e emetse palohare ya palo ya dihlopha tsa hydroxyethyl ho ya ka yuniti ya glucose ka hara ketane ya selulose.
Hydroxypropylcellulose (HPC):
HPC e hlahisoa ka ho phekola cellulose ka propylene oxide.
Nakong ea ts'ebetso ea ho kopanya, lihlopha tsa hydroxypropyl li kenngoa mohahong oa cellulose.
Ho tšoana le HEC, tekanyo ea ho fetola e sebelisoa ho lekanya boholo ba sebaka sa hydroxypropyl ka molek'hule ea cellulose.
sebopeho:
Hydroxyethylcellulose (HEC):
HEC e tsebahala ka bokhoni ba eona bo botle ba ho boloka metsi, e leng se etsang hore e be motsoako o tloaelehileng mefuteng e mengata ea ho tenya le ho etsa gelling.
E etsa tharollo e hlakileng ka metsing mme e bonts'a boits'oaro ba pseudoplastic, ho bolelang hore ha e na viscous haholo tlasa khatello ea ho kuta.
HEC e atisa ho sebelisoa ha ho etsoa lihlahisoa tsa tlhokomelo ea motho ka mong, meriana, le e le motenya oa liaparo tse entsoeng ka metsi.
Hydroxypropylcellulose (HPC):
HPC e boetse e na le matla a ho qhibiliha ha metsi le thepa ea ho etsa lifilimi.
E na le mefuta e mengata e fapaneng ea ho lumellana le li-solvents tse fapaneng ho feta HEC.
Hangata HPC e sebelisoa e le setlamo sa meriana, lihlahisoa tsa tlhokomelo ea molomo, le tlhahiso ea matlapa.
kopo:
Hydroxyethylcellulose (HEC):
E sebelisoa haholo indastering ea litlolo le ea tlhokomelo ea motho ka mong e le motenya oa li-shampoo, litlolo le litlolo.
E sebelisoa e le stabilizer le viscosity regulator mefuteng ea meriana.
E sebelisoa ha ho etsoa lipente le litlolo tse entsoeng ka metsi.
Hydroxypropylcellulose (HPC):
E sebelisoa ka tloaelo lits'ebetsong tsa meriana, haholo-holo joalo ka se tlamang ha ho etsoa matlapa.
E sebelisoa lihlahisoa tsa tlhokomelo ea molomo tse kang sesepa sa meno bakeng sa thepa ea eona e teteaneng.
E ka sebelisoa lits'ebetsong tse laoloang tsa phano ea lithethefatsi.
Le ha hydroxyethyl cellulose (HEC) le hydroxypropyl cellulose (HPC) li arolelana lintho tse ling tse tšoanang ka lebaka la tšimoloho ea cellulose, li fapana ka sebopeho sa lik'hemik'hale, thepa le ts'ebeliso. HEC e atisa ho ratoa tlhokomelong ea botho le mekhoa ea ho roala bakeng sa ho boloka metsi le matla a ho teteaneng, ha HPC e sebelisoa haholo indastering ea meriana, haholo-holo ho etsa lipilisi le mekhoa ea ho fana ka lithethefatsi e laoloang. Ho utloisisa liphapang tsena ho bohlokoa bakeng sa ho khetha li-derivatives tse nepahetseng tsa cellulose bakeng sa lits'ebetso tse ikhethang tsa indasteri.
Nako ea poso: Jan-16-2024