hydroxypropyl starch ethers ke eng?

Hydroxypropyl starch ethers (HPStEs) ke lihlahisoa tse fetotsoeng tsa starch tse fumanoang ka phetoho ea lik'hemik'hale tsa limolek'hule tsa tlhaho tsa starch, tseo hangata li nkiloeng mehloling e kang poone, koro, litapole kapa tapioca. Li-HPStEs li hlahisoa ka ho hlahisa lihlopha tsa hydroxypropyl holim'a mokokotlo oa setache ka mekhoa ea etherification.

Sebopeho sa lik'hemik'hale tsa hydroxypropyl starch ethers se na le limolek'hule tsa starch tse nang le lihlopha tsa hydroxypropyl (-OCH2CH(OH)CH3) tse khomaretsoeng ho lihlopha tse sebetsang tsa hydroxyl (-OH) hammoho le ketane ea polymer ea starch. Tekanyo ea substitution (DS), e bolelang palo e tloaelehileng ea lihlopha tsa hydroxypropyl tse khomaretsoeng ka yuniti ea tsoekere ea molek'hule ea starch, e ka fapana ho latela maemo a karabelo le thepa e lakatsehang ea sehlahisoa sa ho qetela.

Li-HPStEs hangata ke liphofshoana tse tšoeu ho isa ho tse tšoeu tse nang le litšobotsi tse fapaneng tsa 'mele joalo ka boholo ba likaroloana, bongata bo bongata, ho qhibiliha, le viscosity, tse ka ikamahanyang le ts'ebeliso e itseng le litlhoko tsa sebopeho. Ha li qhibilihe metsing a batang empa li ka hasana le ho ruruha ka metsing a chesang, ho etsa metsoako ea viscous kapa li-gel.

Hydroxypropyl starch ethers e bonts'a lisebelisoa tse 'maloa tse lakatsehang tse li etsang litlatsetso tsa bohlokoa mefuteng e mengata ea lits'ebetso tsa indasteri le tsa khoebo:

1. Ho Boloka Metsi: Li-HPStE li na le thepa ea ho boloka metsi a mangata, e leng se etsang hore e be li-agent tse sebetsang hantle tsa ho tiisa le tse tlamang linthong tse kang likhomaretsi, lirafshoa le thepa ea kaho. Li thusa ho ntlafatsa ts'ebetso, hydration, le ho khomarela lisebelisoa tsena.
2. Ho tiisa: Li-HPStE li sebetsa e le li-agent tse sebetsang hantle tsa ho tenya lits'ebetsong tse nang le metsi, li eketsa viscosity le ho tsitsa ha metsoako e kang lipente, li-adhesives, le lihlahisoa tsa tlhokomelo ea botho. Li fana ka sebopeho se ntlafetseng, botsitso, le ho ata ha lihlahisoa tsena.
3. Tlhahiso ea Lifilimi: Li-HPStEs li ka etsa lifilimi tse pepeneneng le tse tenyetsehang ha li hasane ka metsing, li etsa hore li be molemo ho liphahlo, lifiliming le lits'ebetsong tsa ho paka. Ba ntlafatsa sebopeho sa filimi, ho khomarela, le thepa ea thibelo, ho matlafatsa ts'ebetso le ho tšoarella ha sehlahisoa sa ho qetela.
4. Ho tsitsisa: HPStEs e bonts'a botsitso bo babatsehang tsamaisong ea metsi, ho thibela ho arohana ha mekhahlelo, ho senya, kapa ho kopanya likaroloana. Li thusa ho boloka ho ts'oana le botsitso lihlopheng tse kang emulsions, suspensions, le dispersions.
5. Biodegradability: HPStEs li nkiloe mehloling ea setache ea tlhaho 'me li khona ho senyeha, ho li etsa hore e be mekhoa e meng e bolokang tikoloho le e tšoarellang ho e-na le li-additives tsa maiketsetso lits'ebetsong tse fapaneng.
6. Tšebelisano: Li-HPStE li tsamaisana le mefuta e mengata e fapaneng ea metsoako le li-additives tse sebelisoang hangata ha li etsoa. Li ka kenyelletsoa habonolo ho li-formulation ho fihlela thepa e lakatsehang le litšobotsi tsa ts'ebetso.

Ka kakaretso, hydroxypropyl starch ethers e fana ka mefuta-futa, ts'ebetso le ts'ebetso e tsitsitseng, e li etsa litlatsetso tse bohlokoa haholo indastering e kang ea kaho, likhomaretsi, likobo, tlhokomelo ea motho, lijo le meriana. Mehaho le lits'ebetso tsa bona tse fapaneng li kenya letsoho ntlafatsong ea ts'ebetso, ts'ebetso, le ts'ebetsong ea tikoloho mafapheng a fapaneng.