Mai da hankali kan ethers cellulose

Menene maki daban-daban na HPMC?

Hydroxypropyl methylcellulose (HPMC) wani nau'in polymer ne da aka yi amfani da shi a cikin masana'antu daban-daban da suka hada da magunguna, gine-gine, abinci, da kayan shafawa. Samfurin cellulose ne wanda ke nuna kewayon kaddarorin dangane da takamaiman darajar sa. Daban-daban maki na HPMC da farko an bambanta su ta danko, matakin maye, girman barbashi, da takamaiman aikace-aikace manufa.

1. Matsayin Dankowa
Danko shine maɓalli mai mahimmanci wanda ke bayyana darajar HPMC. Yana nufin kauri ko juriya zuwa kwararar maganin HPMC. HPMC yana da kewayon danko daga ƙasa zuwa babba kuma yawanci ana auna shi da centipoise (cP) lokacin narkar da cikin ruwa. Wasu makin viscosity gama gari sun haɗa da:

Ƙananan makin ɗanƙoƙi (misali, 3 zuwa 50 cP): Ana amfani da waɗannan maki a aikace-aikacen da ke buƙatar mafita mai ƙarancin danko, kamar a cikin masana'antar abinci azaman stabilizers, thickeners, ko emulsifiers.

Matsakaicin danko maki (misali, 100 zuwa 4000 cP): Matsakaici danko ana amfani da HPMC a cikin sarrafawar sakin magunguna da kuma azaman masu ɗaurewa a cikin samar da kwamfutar hannu.

Babban maki mai danko (misali, 10,000 zuwa 100,000 cP): Ana yawan amfani da makin danko sosai wajen gini, musamman turmi na tushen siminti, adhesives, da filasta, inda suke inganta iya aiki, riƙe ruwa, da mannewa.

2. Digiri na Sauya (DS) da Sauya Molar (MS)
Matsakaicin maye yana nufin matsakaicin adadin ƙungiyoyin hydroxyl akan ƙwayoyin cellulose waɗanda aka maye gurbinsu da ƙungiyoyin methoxy (-OCH3) ko hydroxypropyl (-OCH2CHOHCH3). Matsayin maye gurbin yana rinjayar solubility, zafin jiki, da danko na HPMC. An rarraba maki HPMC bisa ga methoxy da abun ciki na hydroxypropyl:

Abun ciki na methoxy (28-30%): Mafi girman abun ciki na methoxy gabaɗaya yana haifar da ƙananan yanayin yanayin gelation da mafi girman danko.

Abun ciki na Hydroxypropyl (7-12%): Ƙara yawan abun ciki na hydroxypropyl gabaɗaya yana inganta narkewa a cikin ruwan sanyi kuma yana ƙara sassauci.

3. Rarraba girman barbashi
The barbashi girman HPMC powders iya bambanta yadu, shafi su rushe kudi da kuma yi a cikin wani takamaiman aikace-aikace. Mafi kyawun barbashi, da sauri suna narkewa, yana sa su fi dacewa da aikace-aikacen da ke buƙatar saurin ruwa, kamar masana'antar abinci. A cikin gine-gine, yana da kyau a yi amfani da ƙananan maki don mafi kyawun watsawa a cikin busassun gaurayawan.

4. Musamman makin aikace-aikace
Ana samun HPMC a nau'o'i daban-daban, wanda aka kera don takamaiman buƙatun masana'antu:

Matsayin magunguna: Ana amfani da shi azaman ɗaure, tsohon fim, da wakili mai sarrafawa a cikin nau'ikan nau'ikan sashi na baka. Ya dace da ƙaƙƙarfan ƙa'idodin tsabta kuma yawanci yana da takamaiman danko da kaddarorin maye gurbinsa.

Matsayin gini: Wannan sa na HPMC an inganta shi don amfani da siminti da samfuran tushen gypsum. Yana inganta riƙe ruwa, iya aiki, da mannewa a cikin filasta, turmi, da adhesives na tayal. Yawanci ana amfani da makin danko sosai a wannan yanki.

Matsayin Abinci: An amince da matakin abinci HPMC don amfani dashi azaman ƙari na abinci (E464) kuma ana iya amfani dashi azaman mai kauri, emulsifier, da stabilizer a cikin samfura iri-iri, gami da kayan gasa da kayan kiwo. Dole ne ya bi ka'idodin amincin abinci kuma yawanci yana da ƙazanta.

Matsayin kwaskwarima: A cikin samfuran kulawa na sirri, ana amfani da HPMC azaman mai kauri, emulsifier, da tsohon fim. Yana ba da laushi mai laushi ga creams, lotions, da shampoos.

5. Gyaran maki
Wasu aikace-aikacen suna buƙatar gyare-gyaren maki na HPMC, inda aka gyara polymer da sinadarai don haɓaka takamaiman kaddarorin:

HPMC mai haɗe-haɗe: Wannan gyare-gyare yana inganta ƙarfin gel da kwanciyar hankali a cikin tsarin sarrafawa-saki.

Hydrophobic modified HPMC: Ana amfani da irin wannan nau'in HPMC a cikin abubuwan da ke buƙatar ingantaccen juriya na ruwa, kamar sutura da fenti.

6. Gel zazzabi maki
Gel zafin jiki na HPMC shine zafin jiki wanda bayani ya fara samar da gel. Ya dogara da matakin maye gurbin da danko. Ana samun maki daban-daban dangane da zafin gel ɗin da ake so:

Ƙananan ma'aunin zafin jiki na gel: Waɗannan gel ɗin gel a ƙananan yanayin zafi, suna sa su dace da yanayin zafi ko takamaiman tsarin masana'antu waɗanda ke buƙatar saitunan zafin jiki.

Matsayin zafin jiki mai girma: Ana amfani da waɗannan a aikace-aikacen da ke buƙatar samuwar gel a yanayin zafi mafi girma, kamar wasu samfuran magunguna.

Ana samun HPMC a cikin maki iri-iri don saduwa da takamaiman buƙatun masana'antu daban-daban. Zaɓin darajar HPMC ya dogara da danko da ake so, matakin maye gurbin, girman barbashi, da takamaiman buƙatun aikace-aikacen. Ko ana amfani da su a cikin magunguna, gini, abinci ko kayan kwalliya, madaidaicin sa na HPMC yana da mahimmanci don cimma kaddarorin da ake so da ayyuka a ƙarshen samfur.


Lokacin aikawa: Agusta-27-2024
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