Hydroxypropyl Starch Ether ke eng?

Hydroxypropyl starch ether (HPS) ke setache se fetotsoeng se seng se tumme haholo liindastering tse fapaneng joalo ka setei se ntseng se hola, se tsitsisa, le se etsang emulsifying. Ke motsoako oa lik'habohaedreite tse qhibilihang ka metsing tse nkiloeng ho poone ea tlhaho, litapole, kapa tapioca starch ka mokhoa oa ho fetola lik'hemik'hale o kenyelletsang ho kenyelletsa lihlopha tsa hydroxypropyl ho limolek'hule tsa starch.

Tšebeliso ea HPS e se e tumme indastering ea lijo kaha e ntlafatsa sebopeho, molomo le bophelo ba lishelefo tsa lihlahisoa tse ngata tsa lijo. Hangata e sebelisoa ka sopho, li-sauces, gravies, puddings, le lihlahisoa tse ling tse hlokang ho teteaneng kapa ho tsitsisa. HPS e boetse e sebelisoa indastering ea meriana ho ntlafatsa phano ea lithethefatsi, hammoho le litlolong le lihlahisoa tsa tlhokomelo ea motho tse kang li-shampoo, litlolo le litlolo.

Sengoliloeng sena, re tla hlahloba thepa, ts'ebetso ea tlhahiso, lits'ebetso, le lintlha tsa polokeho ea HPS.

Thepa ea Hydroxypropyl Starch Ether

Hydroxypropyl starch ether ke phofo e tšoeu, e sa nkhang hamonate, 'me e sa latsoeheng e qhibilihang haholo metsing le lihlapolli tse ling tsa polar. E na le boima ba molek'hule ho tloha ho 1,000 ho ea ho 2,000,000 Daltons, ho itšetlehile ka tekanyo ea ho kenya sebaka sa lihlopha tsa hydroxypropyl. The degree of substitution (DS) e bolela palo e tloaelehileng ea lihlopha tsa hydroxypropyl ka unit ea anhydroglucose (AGU) ka har'a molek'hule ea starch. DS e phahameng e hlahisa molek'hule ea HPS e nang le hydrophilic le e qhibilihang ka metsing.

HPS e fumaneha ka limaraka tse fapaneng, ho ipapisitsoe le viscosity ea eona, boholo ba likaroloana le thepa e 'ngoe. The viscosity ea HPS hangata e hlalosoa ho latela viscosity ea eona ea Brookfield, e lekantsoeng ka centipoise (cP) ka sekhahla se itseng sa ho kuta le mocheso. Limaraka tsa HPS tse nang le viscosity e phahameng li sebelisoa bakeng sa lihlahisoa tse teteaneng, ha limaraka tse tlase tsa viscosity li sebelisetsoa lihlahisoa tse tšesaane.

Boholo ba karoloana ea HPS le eona ke thepa ea bohlokoa, kaha e ama ho qhalana ha eona le ho phalla ha eona. HPS e fumaneha ka boholo bo fapaneng, ho tloha ho phofo e ntle ho ea ho granules, ho latela ts'ebeliso.

Mokhoa oa Tlhahiso ea Hydroxypropyl Starch Ether

Tlhahiso ea HPS e kenyelletsa phetoho ea starch ea tlhaho ho sebelisa karabelo pakeng tsa starch le propylene oxide (PO), e hlahisang lihlopha tsa hydroxypropyl ho limolek'hule tsa starch. Ts'ebetso hangata e etsoa ka tharollo ea alkaline e nang le metsi, ka ho eketsoa ha ntho e thusang joalo ka sodium hydroxide kapa potasiamo hydroxide.

Ts'ebetso ea phetoho e susumetsoa ke lintlha tse 'maloa, joalo ka nako ea karabelo, mocheso, pH, karo-karolelano ea PO / starch, le mahloriso a catalyst. Lintlha tsena li ama tekanyo ea phetoho, boima ba limolek'hule, le thepa e meng ea sehlahisoa sa HPS se hlahisoang.

Ka mor'a moo, starch e fetotsoeng e tla hlatsuoa, e fokotsehe, ebe e omisoa ho fumana phofo e tšoeu kapa granules. Sehlahisoa sa HPS se ntse se lekoa bakeng sa thepa e fapaneng e kang viscosity, boholo ba likaroloana, mongobo le bohloeki.

Lisebelisoa tsa Hydroxypropyl Starch Ether

Tšebeliso ea HPS kahong e molemo ka litsela tse sa tšoaneng, tse kang ho ntlafatsa matla le ho tšoarella ha konkreite, ho fokotsa metsi, le ho matlafatsa ho khomarela le ho momahana ha liretse. Tse ling tsa lits'ebetso tse tloaelehileng tsa HPS kahong ke:

1. Konkreite:

HPS e sebelisoa ka konkreite e le se fokotsang metsi, se fokotsang bongata ba metsi a hlokahalang bakeng sa moralo o fanoeng oa motsoako. Sena se fella ka matla a phahameng le ho tšoarella ha konkreite, kaha metsi a mangata a ka fokolisa konkreite 'me a baka mapetsong a ho fokotseha. HPS e boetse e ntlafatsa ho sebetsa le ho phalla ha konkreite, e leng molemo mererong e meholo.

2. Seretse:

HPS e sebelisoa ka seretse e le polasetiki, e ntlafatsang ho sebetsa le ho tsitsisa ha seretse. Sena se fella ka maqhama a betere pakeng tsa seretse le lihlopha tsa masonry, e leng sa bohlokoa bakeng sa botšepehi ba mohaho oa mohaho. HPS e boetse e fokotsa metsi a seretse, e leng ho ntlafatsang matla le ho tšoarella ha eona.

3. Lihlahisoa tsa Gypsum:

HPS e sebelisoa lihlahisoa tsa gypsum tse kang samente le motsoako o kopanetsoeng e le sekontiri le se tsitsitseng. Sena se fella ka tšebeliso e bonolo le e tsitsitseng ea lihlahisoa tsa gypsum, hammoho le ho ntlafatsa ho khomarela le ho kopanya. HPS e boetse e ntlafatsa nako ea ho beha le matla a lihlahisoa tsa gypsum, tse molemo lits'ebetsong tsa kaho.

Ntle le lits'ebetso tse kaholimo, HPS e ka sebelisoa le linthong tse ling tsa moaho joalo ka lirafshoa, likhomaretsi le li-sealant. Tšebeliso ea HPS mosebetsing oa kaho e ka ntlafatsa boleng, katleho le ho tšoarella ha merero ea kaho, hammoho le ho fokotsa litšenyehelo le litšila.