Hydroxypropyl starch ether-HPS

Hydroxypropyl starch ether (HPS) ke motsoako oa starch o fetotsoeng ka lik'hemik'hale o sebelisoang haholo liindastering tse fapaneng ka lebaka la thepa ea oona e ikhethang. Motsoako ona o fumanoa ka ho kopanya starch le propylene oxide, e leng se lebisang ho nkeloang sebaka ha lihlopha tsa hydroxyl molek'huleng ea starch ka lihlopha tsa hydroxypropyl. Sehlahisoa se hlahisoang se bontša ho qhibiliha ha metsi ho ntlafetseng, botsitso, viscosity le thepa ea ho etsa filimi ha ho bapisoa le starch ea tlhaho.

1. Sebopeho le Thepa:

Hydroxypropyl starch ether e na le sebopeho se rarahaneng se hlahang phetohong ea molek'hule ea starch. Starch ke polysaccharide e entsoeng ka li-unit tsa glucose tse hokahaneng le libonto tsa glycosidic. Ts'ebetso ea hydroxypropylation e kenyelletsa ho nkeloa sebaka ha lihlopha tsa hydroxyl (-OH) molek'huleng ea starch ka lihlopha tsa hydroxypropyl (-OCH2CHOHCH3). Phetoho ena e fetola thepa ea 'mele le ea lik'hemik'hale ea starch, e fana ka litšobotsi tse ntlafetseng.

Tekanyo ea phetolo (DS) ke paramethara ea bohlokoa e khethollang boholo ba hydroxypropylation. E emela palo e tloaelehileng ea lihlopha tsa hydroxypropyl tse hoketsoeng yuniti e 'ngoe le e 'ngoe ea glucose molek'huleng ea starch. Litekanyetso tse phahameng tsa DS li bontša tekanyo e kholoanyane ea phetoho, e lebisang liphetohong tse kholo litšobotsing tsa starch.

2. Hydroxypropyl starch ether e na le litšobotsi tse 'maloa tse lakatsehang:

Ho qhibiliha ha metsi: HPS e bontša ho qhibiliha ho eketsehileng metsing ha ho bapisoa le starch ea tlhaho, e leng se etsang hore e lokele lits'ebetso tse fapaneng moo ho hlokahalang metsoako e thehiloeng metsing.

Ho thibana ha dihlopha tsa hydroxypropyl ho eketsa ho thibana ha ditharollo tsa HPS, e leng se molemo ditshebedisong tsa ho thibana jwalo ka dikhomaretsing, dikobong le thepa ya kaho.

Bokhoni ba ho Etsa Filimi: HPS e ka etsa lifilimi tse tenyetsehang le tse bonaletsang ha e oma, e fana ka thepa ea thibelo le ho hanyetsa mongobo. Thepa ena e bohlokoa lits'ebetsong tse kang lifilimi tse jeoang, liphahlo le thepa ea ho paka.

Botsitso: Hydroxypropyl starch ether e bonts'a botsitso bo ntlafetseng khahlanong le mocheso, ho kuta le ho senyeha ha lik'hemik'hale ha ho bapisoa le starch ea tlhaho, e atolosa thuso ea eona libakeng le lits'ebetsong tse fapaneng.

Ho lumellana: HPS e lumellana le mefuta e mengata ea lintho tse eketsang, li-polymer le metsoako, e leng se nolofalletsang tšebeliso ea eona mefuteng e nang le metsoako e rarahaneng.

3. Likopo:

Hydroxypropyl starch ether e fumana lits'ebetso tse pharaletseng liindastering tse fapaneng ka lebaka la thepa ea eona e feto-fetohang. Tse ling tsa lits'ebetso tsa bohlokoa li kenyelletsa:

Lisebelisoa tsa Kaho: HPS e sebelisoa e le sesebelisoa sa ho fetola rheology, ho teteana, le ho boloka metsi lihlahisoa tse thehiloeng ho samente, li-plaster tsa gypsum, likhomaretsi tsa thaele le li-mortar. E ntlafatsa bokhoni ba ho sebetsa, ho khomarela le litšobotsi tsa mechini tsa thepa ena.

Lijo le Dino: Indastering ya dijo, HPS e sebediswa e le sethibela-mafu, se tenya, le se fetolang matheba dihlahisweng tse kang sopho, disose, dijo tse monate tsa lebese le dintho tse monate. E ntlafatsa maikutlo a molomo, botsitso le botsitso ba shelefo ntle le ho ama tatso kapa monko.

Meriana: Hydroxypropyl starch ether e sebediswa mefuteng ya meriana e le ntho e kopanyang, e qhalakaneng, le e laolang ho lokolla matlapeng tlhahisong ya matlapeng. E thusa ho hatella matlapeng, e kgothaletsa ho lokollwa ha meriana ka ho tshwana, mme e ntlafatsa ho latela melao ya mokuli.

Lihlahisoa tsa Tlhokomelo ea Motho ka Mong: HPS e kenyelelitsoe litlolong, linthong tsa ho hlapa le lihlahisoa tsa tlhokomelo ea motho ka mong e le setenya, se kopanyang le se etsang filimi. E ntlafatsa sebopeho sa sehlahisoa, botsitso le litšobotsi tsa kutlo mefuteng e kang litlolo, litlolo le lihlahisoa tsa tlhokomelo ea moriri.

Pampiri le Masela: Indastering ea pampiri, HPS e sebelisoa e le sesebelisoa sa ho lekanya boholo ba bokaholimo, sesebelisoa sa ho koahela le ho matlafatsa matla ho ntlafatsa boleng ba pampiri, ho printa habonolo le matla. Masela, e sebelisoa e le sesebelisoa sa ho lekanya boholo ho kenya masela ho satalla le ho ba boreleli.

4. Melemo:

Tšebeliso ea hydroxypropyl starch ether e fana ka melemo e 'maloa ho bahlahisi, li-formulator le basebelisi ba ho qetela:

Tshebetso e Ntlafetseng: HPS e ntlafatsa tshebetso ya dihlahiswa tse fapaneng ka ho fana ka thepa e lakatsehang jwalo ka taolo ya ho qhibidiha, botsitso, kgomarelo le ho thehwa ha filimi.

Ho feto-fetoha ha maemo: Ho lumellana ha eona le metsoako le thepa e meng ho lumella mekhoa e fapaneng ho pholletsa le liindasteri tse ngata, ho nolofalletsa nts'etsopele ea lihlahisoa tse ncha.

Ho Sebetsa ka Theko e Tlase: Ho sa tsotellehe thepa ea eona e ntlafalitsoeng, HPS e fana ka litharollo tse theko e tlase ha li bapisoa le li-additives kapa metsoako e meng, e leng se tlatsetsang ho bolokeng litšenyehelo ka kakaretso mefuteng.

Ho Latela Melao: HPS e fihlela maemo a taolo bakeng sa polokeho, boleng le ho tsamaellana le tikoloho, e netefatsa ho latela melao le maemo a sebetsang libakeng tse fapaneng.

Botsitso: Lintho tse thehiloeng ho starch tse kang HPS li nkiloe mehloling e nchafatsoang, e leng se etsang hore e be mekhoa e meng e sireletsang tikoloho ho

Lisebelisoa tse thehiloeng ho peterole. Ho bola ha tsona ho thusa haholo boitekong ba ho boloka lintho li le maemong a matle.

hydroxypropyl starch ether (HPS) ke motsoako o feto-fetohang le oa bohlokoa o nang le lits'ebetso tse fapaneng ho pholletsa le liindasteri ho tloha kahong le lijong ho ea ho meriana le tlhokomelo ea botho. Thepa ea eona e ikhethang, ho kenyeletsoa le ho qhibiliha ho ntlafalitsoeng, ho teteana, botsitso le bokhoni ba ho etsa filimi, e etsa hore e be karolo ea bohlokoa ka ho fetisisa mefuteng e mengata. Ha liindasteri li ntse li tsoela pele ho batla metsoako e tsitsitseng le e sebetsang hantle, tlhoko ea HPS e lebelletsoe ho hola, e leng se susumetsang boqapi le lits'ebetso tse ling nakong e tlang.