Kedu ihe bụ Hydroxypropyl Starch Ether?

Hydroxypropyl starch ether (HPS) bụ starch emezigharịrị nke na-ewu ewu na ụlọ ọrụ dị iche iche dị ka ihe na-eme ka ọ sie ike, na-eme ka ọ kwụsie ike na emulsifying. Ọ bụ ihe na-esi na carbohydrate soluble mmiri na-enweta site na ọka eke, nduku, ma ọ bụ tapioca starch site na usoro mgbanwe kemịkalụ nke gụnyere iwebata otu hydroxypropyl na molekul starch.

Iji HPS abụrụla ihe a ma ama na ụlọ ọrụ nri ka ọ na-eme ka udidi, mmetụta ọnụ, na ndụ nchekwa nke ọtụtụ ngwaahịa nri. A na-ejikarị ya na ofe, sauces, gravies, puddings, na ngwaahịa ndị ọzọ na-achọ ịkwa akwa ma ọ bụ nkwụsi ike. A na-ejikwa HPS na ụlọ ọrụ na-emepụta ọgwụ iji meziwanye nnyefe ọgwụ, yana n'ihe ịchọ mma na ngwaahịa nlekọta onwe onye dị ka shampoos, lotions, na creams.

N'isiokwu a, anyị ga-enyocha njirimara, usoro mmepụta ihe, ngwa na nchekwa nchekwa nke HPS.

Njirimara nke Hydroxypropyl Starch Ether

Hydroxypropyl starch ether bụ ntụ ntụ na-acha ọcha, enweghị isi, na enweghị ụtọ nke na-agbaze nke ukwuu na mmiri na ihe mgbaze ndị ọzọ. Ọ nwere ịdị arọ molekụla sitere na 1,000 ruo 2,000,000 Dalton, dabere na ogo nnọchi nke otu hydroxypropyl. Ogo nke nnọchi (DS) na-ezo aka na nkezi ọnụọgụ nke otu hydroxypropyl kwa otu anhydroglucose (AGU) na molekul starch. DS dị elu na-ebute molekul HPS hydrophilic na mmiri-soluble.

HPS dị na ọkwa dị iche iche, dabere na viscosity ya, nha urughuru ya na ihe ndị ọzọ. A na-egosipụtakarị viscosity nke HPS n'ihe gbasara viscosity Brookfield ya, nke a na-atụ na centipoise (cP) n'otu ọnụ ahịa na okpomọkụ. A na-eji akara ule HPS nwere viscosity dị elu maka ngwaahịa ndị gbara ọkpụrụkpụ, ebe akara ngosi viscosity dị ala na-eji maka ngwaahịa ndị dị nro.

The urughuru size nke HPS bụkwa ihe dị mkpa onwunwe, dị ka ọ na-emetụta ya dispersibility na flowability. HPS dị na nha urughuru dị iche iche, sitere na ezigbo ntụ ntụ ruo granules, dabere na ngwa ahụ.

Usoro nrụpụta nke Hydroxypropyl Starch Ether

Mmepụta nke HPS gụnyere ngbanwe nke starch eke site na iji mmeghachi omume n'etiti starch na propylene oxide (PO), nke na-ewebata otu hydroxypropyl na ụmụ irighiri starch. A na-emekarị usoro a na ngwọta alkaline nke mmiri, na-agbakwunye ihe na-eme ka ihe dị ka sodium hydroxide ma ọ bụ potassium hydroxide.

Usoro mgbanwe ahụ na-emetụta ọtụtụ ihe, dị ka oge mmeghachi omume, okpomọkụ, pH, PO / starch ratio, na ntinye uche. Ihe ndị a na-emetụta ogo ngbanwe, ịdị arọ molekụla, na njirimara ndị ọzọ nke ngwaahịa HPS na-apụta.

A na-asazi starch ahụ emezigharịrị, wepụ ya, ma kpoo ya iji nweta ntụ ntụ ma ọ bụ granules ọcha. A na-anwale ngwaahịa HPS maka ihe dị iche iche dị ka viscosity, nha urughuru, ọdịnaya mmiri, na ịdị ọcha.

Ngwa nke Hydroxypropyl Starch Ether

Iji HPS na-ewu ihe na-aba uru n'ụzọ dị iche iche, dị ka imeziwanye ike na ịdịte aka nke ihe, ibelata ọdịnaya mmiri, na ịkwalite njikọ na njikọta nke ngwa agha. Ụfọdụ ngwa a na-ahụkarị nke HPS n'ihe owuwu bụ:

1. Ihe siri ike:

A na-eji HPS mee ihe dị ka onye na-ebelata mmiri, nke na-ebelata oke mmiri dị mkpa maka nhazi ngwakọta e nyere. Nke a na-ebute ike dị elu na ịdịte aka nke ihe, n'ihi na oke mmiri nwere ike ime ka ihe ahụ daa mbà ma mee ka ọkpụkpụ na-agbaji. HPS na-emekwa ka arụ ọrụ na ịrụ ọrụ nke kọnkịrị, nke bara uru na nnukwu ọrụ.

2. Mortar:

A na-eji HPS na ngwa agha dị ka plasticizer, nke na-eme ka arụ ọrụ na nkwụsi ike nke ngwa agha dịkwuo mma. Nke a na-eme ka njikọ dị mma dị n'etiti ngwa agha na ụlọ ọrụ masonry, nke dị mkpa maka nhazi nhazi nke ụlọ ahụ. HPS na-ebelatakwa ọdịnaya mmiri n'ime ngwa agha, nke na-eme ka ike na ịdịte aka ya dịkwuo mma.

3. Ngwaahịa gypsum:

A na-eji HPS na ngwaahịa gypsum dị ka plasta na ngwakọta nkwonkwo dị ka ihe na-agba ume na stabilizer. Nke a na-eme ka ngwa ngwa dị nro na nke na-agbanwe agbanwe nke ngwaahịa gypsum, yana nkwalite na nchikota nke ọma. HPS na-emekwa ka nhazi oge na ike nke ngwaahịa gypsum dị mma, nke bara uru na ngwa ihe owuwu.

Na mgbakwunye na ngwa ndị a dị n'elu, a pụkwara iji HPS mee ihe na ihe ndị ọzọ e ji ewu ụlọ dị ka mkpuchi, nrapado, na mkpuchi. Iji HPS n'ihe owuwu nwere ike imeziwanye ogo, arụmọrụ, na nkwado nke ọrụ owuwu, yana ibelata ọnụ ahịa na mkpofu.