I-Hydroxypropyl isitashi ether-HPS

I-Hydroxypropyl starch ether (HPS) iwukuphuma kwesitashi esiguqulwe ngamakhemikhali esithola ukusetshenziswa kabanzi ezimbonini ezihlukahlukene ngenxa yezakhiwo zayo ezihlukile. Le nhlanganisela itholakala ngokusabela isitashi nge-propylene oxide, okuholela ekushintsheni kwamaqembu e-hydroxyl ku-molecule yesitashi ngamaqembu e-hydroxypropyl. Umkhiqizo ovelayo ubonisa ukuncibilika kwamanzi okuthuthukisiwe, ukuzinza, i-viscosity, kanye nezakhiwo zefilimu uma kuqhathaniswa nesitashi somdabu.

1.Isakhiwo Nezakhiwo:

I-Hydroxypropyl isitashi ether inokwakheka okuyinkimbinkimbi okubangelwa ukuguqulwa kwe-molecule yesitashi. Isitashi i-polysaccharide eyakhiwe amayunithi e-glucose axhunywe amabhondi e-glycosidic. Inqubo ye-hydroxypropylation ihilela ukufakwa esikhundleni kwamaqembu e-hydroxyl (-OH) ku-molecule yesitashi namaqembu e-hydroxypropyl (-OCH2CHOHCH3). Lokhu kuguqulwa kushintsha izakhiwo ezingokomzimba nezamakhemikhali zesitashi, kunikeze izici ezithuthukisiwe.

I-degree of substitution (DS) iyipharamitha ebalulekile enquma izinga le-hydroxypropylation. Imele inani elimaphakathi lamaqembu e-hydroxypropyl anamathiselwe kuyunithi ngayinye ye-glucose ku-molecule yesitashi. Amanani aphezulu e-DS abonisa izinga elikhulu lokuguqulwa, okuholela ekushintsheni okuphawulekayo kwezakhiwo zesitashi.

I-2.I-Hydroxypropyl starch ether ibonisa izinto ezimbalwa ezifiselekayo:

Ukunyibilika Kwamanzi: I-HPS ibonisa ukuncibilika okuthuthukisiwe emanzini uma kuqhathaniswa nesitashi somdabu, okuwenza afanelekele izinhlelo zokusebenza ezihlukahlukene lapho ukwakheka okusekelwe emanzini kudingeka khona.

I-Viscosity: Ukuba khona kwamaqembu e-hydroxypropyl kunikeza i-viscosity eyengeziwe ezixazululweni ze-HPS, okuyinzuzo ekugxiliseni izinhlelo zokusebenza ezifana nokunamathiswa, okokunamathela, nezinto zokwakha.

Ikhono Lokwenza Ifilimu: I-HPS ingakha amafilimu aguquguqukayo nasobala lapho omiswa, anikeze izakhiwo zokuvimbela kanye nokumelana nomswakama. Lesi sakhiwo sibalulekile ezinhlelweni ezinjengamafilimu adliwayo, okokunamathela, nezinto zokupakisha.

Ukuzinza: I-Hydroxypropyl starch ether ibonisa ukuzinza okuthuthukisiwe ngokumelene nokushisa, i-shear, kanye nokuwohloka kwamakhemikhali uma kuqhathaniswa nesitashi somdabu, ukwandisa ukusetshenziswa kwayo ezindaweni nezinqubo ezihlukahlukene.

Ukuhambisana: I-HPS ihambisana nezinhlobonhlobo zezithasiselo, ama-polymers, kanye nezithako, evumela ukusetshenziswa kwayo ekwakhiweni okunezingxube eziyinkimbinkimbi.

3.Izinhlelo zokusebenza:

IHydroxypropyl starch ether ithola ukusetshenziswa okubanzi kuzo zonke izimboni ezahlukahlukene ngenxa yezakhiwo zayo eziguquguqukayo. Ezinye zezinhlelo zokusebenza ezibalulekile zifaka:

Izinto Zokwakha: I-HPS isetshenziswa njenge-rheology modifier, i-thickener, ne-ejenti yokugcina amanzi emikhiqizweni esekwe usimende, kumaplasta egypsum, okunamathelisa amathayili, nasezisikeni. Ithuthukisa ukusebenza, ukunamathela, kanye nezakhiwo zemishini zalezi zinto.

Ukudla Nesiphuzo: Embonini yokudla, i-HPS iqashwa njengesiqinisi, i-thickener, kanye ne-texturizer emikhiqizweni efana nesobho, amasoso, ama-dessert obisi, nezinto zesinkwa. Ithuthukisa ukuzwakala komlomo, ukungaguquguquki, nokuzinza kweshalofu ngaphandle kokuthinta ukunambitheka noma iphunga.

Ezemithi: I-Hydroxypropyl isitashi ether isetshenziswa ekwenziweni kwemithi njenge-binder, disintegrant, kanye ne-ejenti ekhishwayo elawulwayo ekukhiqizeni amaphilisi. Kwenza kube lula ukucindezelwa kwethebhulethi, kukhuthaze ukukhululwa kwezidakamizwa ezifanayo, futhi kuthuthukise ukuthobela kwesiguli.

Imikhiqizo Yokunakekelwa Komuntu Siqu: I-HPS ihlanganiswe nezimonyo, izinto zangasese, kanye nemikhiqizo yokunakekelwa komuntu siqu njenge-thickener, emulsifier, kanye nefilimu yangaphambili. Ithuthukisa ukuthungwa komkhiqizo, ukuzinza, kanye nezimfanelo zezinzwa ekwenziweni okufana nokhilimu, izinto zokuthambisa, nemikhiqizo yokunakekelwa kwezinwele.

Iphepha Nendwangu: Embonini yephepha, i-HPS iqashwa njenge-ejenti yokulinganisa indawo, i-coating binder, nesithuthukisi samandla ukuze kuthuthukiswe ikhwalithi yephepha, ukuphrinta, kanye nezakhiwo zamandla. Ezindwangu, isetshenziswa njenge-ejenti yokulinganisa ukunikeza ukuqina nokushelela ezindwangu.

4.Izinzuzo:

Ukusetshenziswa kwe-hydroxypropyl starch ether kunikeza izinzuzo ezimbalwa kubakhiqizi, abadidiyeli, kanye nabasebenzisi bokugcina:

Ukusebenza Okuthuthukisiwe: I-HPS ithuthukisa ukusebenza kwemikhiqizo ehlukahlukene ngokunikeza izinto ezifiselekayo ezifana nokulawula i-viscosity, ukuzinza, ukunamathela, nokwakheka kwefilimu.

Ukuhlukahluka: Ukuhambisana kwayo nezinye izithako nezinto zokwakha kuvumela ukwakheka okuguquguqukayo kuzo zonke izimboni eziningi, okuvumela ukuthuthukiswa kwemikhiqizo emisha.

Ukusebenza Kwezindleko: Naphezu kwezakhiwo zayo ezithuthukisiwe, i-HPS inikeza izixazululo ezingabizi kakhulu uma kuqhathaniswa nezinye izithasiselo noma izithako, okunikela ekongeni kwezindleko kukonke ekwenziweni.

Ukuthobela Umthetho: I-HPS ihlangabezana namazinga okulawula okuphepha, ikhwalithi, nokuhambisana kwemvelo, iqinisekisa ukuthobela imithetho nezindinganiso ezisebenzayo ezifundeni ezahlukene.

Ukusimama: Okuphuma kokunye okusekelwe kwisitashi okufana ne-HPS kuthathwe ezinsizeni ezivuselelekayo, okuzenza zibe ezinye izindlela ezivumela imvelo

izithasiselo ezisekelwe ku-petroleum. I-biodegradability yabo iphinde ibe neqhaza emizamweni yokusimama.

I-hydroxypropyl starch ether (HPS) iyisithako esisebenza ngezindlela eziningi futhi esibalulekile esinezinhlelo zokusebenza ezihlukahlukene kuzo zonke izimboni kusukela kwezokwakha nokudla kuye kwezokwelapha nokunakekela komuntu siqu. Izici zayo eziyingqayizivele, ezihlanganisa ukunyibilika okuthuthukisiwe, i-viscosity, ukuzinza, nekhono lokwenza ifilimu, kuyenza ibe ingxenye ebaluleke kakhulu ekwakhiweni okuningi. Njengoba izimboni ziqhubeka nokufuna izithako ezisimeme nezisebenza kahle kakhulu, isidingo se-HPS kulindeleke ukuthi sikhule, siqhubekisele phambili ukuqamba okusha kanye nokusetshenziswa esikhathini esizayo.