Hydroxypropyl Starch Ether ni iki?

Hydroxypropyl krahisi ether (HPS) ni krahisi yahinduwe imaze kumenyekana cyane mubikorwa bitandukanye nkumubyimba, utuza, kandi uhindura emulisitiya. Nibikomoka ku mazi ya karubone ya hydrata ikomoka ku bigori bisanzwe, ibirayi, cyangwa tapioca ibinyamisogwe binyuze mu buryo bwo guhindura imiti ikubiyemo kwinjiza amatsinda ya hydroxypropyl muri molekile ya krahisi.

Imikoreshereze ya HPS yamenyekanye cyane mu nganda z’ibiribwa kuko itezimbere imiterere, umunwa, hamwe nubuzima bwibicuruzwa byinshi byibiribwa. Bikunze gukoreshwa mu isupu, isosi, gravies, pudding, nibindi bicuruzwa bisaba kubyimba cyangwa gutuza. HPS ikoreshwa kandi mu nganda zimiti mugutezimbere itangwa ryibiyobyabwenge, ndetse no kwisiga hamwe nibicuruzwa byita kumuntu nka shampo, amavuta yo kwisiga, hamwe na cream.

Muri iki kiganiro, tuzasesengura imiterere, inzira yo gukora, porogaramu, hamwe n’umutekano wa HPS.

Ibyiza bya Hydroxypropyl Starch Ether

Hydroxypropyl krahisi ether ni ifu yera, itagira impumuro nziza, kandi idafite uburyohe bukemuka cyane mumazi no mumashanyarazi ya polar. Ifite uburemere bwa molekile iri hagati ya 1.000 na 2.000.000 Daltons, bitewe nurwego rwo gusimbuza hydroxypropyl. Urwego rwo gusimbuza (DS) bivuga umubare mpuzandengo w'amatsinda ya hydroxypropyl kuri anhydroglucose unit (AGU) muri molekile ya krahisi. DS yo hejuru itanga hydrophilique na molekile ya HPS ikemura amazi.

HPS iraboneka mubyiciro bitandukanye, bitewe nubwiza bwayo, ingano yingingo, nibindi bintu. Ubukonje bwa HPS busanzwe bugaragazwa ukurikije ubwiza bwa Brookfield, bupimirwa muri centipoise (cP) ku gipimo cyihariye n'ubushyuhe. Urwego rwo hejuru-rwinshi rwa HPS rukoreshwa mubicuruzwa byimbitse, mugihe amanota yo hasi-viscosity akoreshwa kubicuruzwa byoroshye.

Ingano ya HPS nayo ni umutungo wingenzi, kuko igira ingaruka kubitandukanya no gutembera. HPS iraboneka mubunini butandukanye, uhereye kuri poro nziza kugeza kuri granules, bitewe na progaramu.

Uburyo bwo Gukora Hydroxypropyl Starch Ether

Umusaruro wa HPS ukubiyemo guhindura ibinyamisogwe bisanzwe ukoresheje reaction hagati ya krahisi na propylene oxyde (PO), itangiza amatsinda ya hydroxypropyl kuri molekile ya krahisi. Ubusanzwe inzira ikorwa mubisubizo byamazi ya alkaline, hiyongereyeho catisale nka hydroxide ya sodium cyangwa hydroxide ya potasiyumu.

Inzira yo guhindura iterwa nibintu byinshi, nkigihe cyo kubyitwaramo, ubushyuhe, pH, igipimo cya PO / krahisi, hamwe na catalizator. Izi ngingo zigira ingaruka kurwego rwo gusimbuza, uburemere bwa molekile, nibindi bintu byibicuruzwa byavuyemo HPS.

Ibinyamisogwe byahinduwe noneho byogejwe, bitabogamye, kandi byumishwa kugirango ubone ifu yera cyangwa granules. Ibicuruzwa bya HPS noneho bipimishwa kumiterere itandukanye nko kuba viscosity, ingano yuduce, ibirimo ubuhehere, nubuziranenge.

Porogaramu ya Hydroxypropyl Starch Ether

Gukoresha HPS mubwubatsi bifite akamaro muburyo butandukanye, nko kuzamura imbaraga nigihe kirekire cya beto, kugabanya ibirimo amazi, no kongera guhuza no guhuza za minisiteri. Bimwe mubisanzwe porogaramu ya HPS mubwubatsi ni:

1. Beto:

HPS ikoreshwa muri beto nkigabanya amazi, igabanya ubwinshi bwamazi akenewe mugushushanya kuvanze. Ibi bivamo imbaraga nyinshi kandi biramba bya beto, kuko amazi arenze arashobora kugabanya beto no gutera kugabanuka. HPS kandi itezimbere imikorere nogutemba kwa beto, ifitiye akamaro imishinga minini.

2. Mortar:

HPS ikoreshwa muri minisiteri nka plastike, itezimbere imikorere nuburinganire bwa minisiteri. Ibi bivamo umubano mwiza hagati ya minisiteri nububiko bwububiko, nibyingenzi muburinganire bwimiterere yinyubako. HPS kandi igabanya amazi muri minisiteri, itezimbere imbaraga nigihe kirekire.

3. Ibicuruzwa bya gypsumu:

HPS ikoreshwa mubicuruzwa bya gypsumu nka plaster hamwe nuruvange rwinshi nkibyimbye na stabilisateur. Ibi bivamo muburyo bworoshye kandi buhoraho bwo gukoresha ibicuruzwa bya gypsumu, kimwe no guhuza hamwe no guhuza. HPS itezimbere kandi igenamigambi n'imbaraga byibicuruzwa bya gypsumu, bifite akamaro mubikorwa byo kubaka.

Usibye porogaramu zavuzwe haruguru, HPS irashobora no gukoreshwa mubindi bikoresho byubwubatsi nka coatings, ibifatika, hamwe na kashe. Imikoreshereze ya HPS mubwubatsi irashobora kuzamura ireme, imikorere, kandi irambye yimishinga yubwubatsi, ndetse no kugabanya ibiciro n imyanda.