Gabatarwa zuwa Hydroxyethylcellulose (HEC):
Hydroxyethylcellulose wani abu ne na cellulose, wani polysaccharide da ke faruwa a zahiri wanda ake samu a bangon tantanin halitta. Cellulose ya ƙunshi maimaita raka'o'in glucose wanda aka haɗa tare da haɗin β-1,4 glycosidic. Ana samun Hydroxyethylcellulose ta hanyar gyara cellulose ta hanyar shigar da ƙungiyoyin hydroxyethyl (-CH2CH2OH) akan kashin bayansa.
Tsarin samarwa:
Etherification na Cellulose: Samar da HEC ya ƙunshi etherification na cellulose. Wannan tsari yawanci yana farawa da cellulose wanda aka samo daga ɓangaren itace ko linters auduga.
Amsa da Ethylene Oxide: Sa'an nan kuma ana amsa cellulose tare da ethylene oxide a ƙarƙashin yanayin alkaline. Wannan halayen yana haifar da maye gurbin ƙungiyoyin hydroxyl akan kashin bayan cellulose tare da ƙungiyoyin hydroxyethyl, wanda ke haifar da hydroxyethylcellulose.
Tsarkakewa: Sa'an nan ana tsarkake samfurin don cire duk wani reagents da samfuran gefe.
Abubuwan da ke cikin Hydroxyethylcellulose:
Solubility: HEC yana narkewa a cikin ruwan sanyi da ruwan zafi, yana bayyana a sarari zuwa mafita mai turbid dangane da maida hankali.
Dankowa: Yana nuna dabi'ar pseudoplastic, ma'ana danko yana raguwa tare da karuwar juzu'i. Ana iya daidaita danko na HEC mafita ta hanyoyi daban-daban kamar maida hankali da digiri na maye gurbin.
Abubuwan Samar da Fim: HEC na iya ƙirƙirar fina-finai masu sassauƙa da haɗin kai, yana sa ya zama mai amfani a aikace-aikace daban-daban inda ake buƙatar ƙirƙirar fim.
Wakilin Kauri: Ofaya daga cikin manyan amfani da HEC shine azaman wakili mai kauri a cikin nau'ikan ƙira, kamar kayan kwalliya, magunguna, da samfuran kulawa na sirri.
Aikace-aikace na Hydroxyethylcellulose:
Kayan shafawa da Kayayyakin Kulawa na Keɓaɓɓu: HEC ana amfani dashi sosai a cikin kayan kwalliya da samfuran kulawa na sirri azaman mai kauri, mai daidaitawa, da wakili na samar da fim a cikin samfuran kamar lotions, creams, shampoos, da man goge baki.
Pharmaceuticals: A cikin magungunan magunguna, HEC tana aiki azaman wakili mai dakatarwa, ɗaure, da matrix mai sarrafawa a cikin suturar kwamfutar hannu da ƙirar baka.
Paints da Coatings: Ana amfani da HEC a cikin fenti na tushen ruwa da sutura a matsayin mai kauri da rheology gyare-gyare don sarrafa danko da inganta kayan aiki.
Masana'antar Abinci: A cikin masana'antar abinci, ana amfani da HEC azaman wakili mai kauri da daidaitawa a cikin samfuran kamar miya, riguna, da samfuran kiwo.
Muhawarar Rarraba Halitta ko Na roba:
Rarraba hydroxyethylcellulose a matsayin na halitta ko roba ana yin muhawara. Anan akwai muhawara ta fuskoki biyu:
Hujjoji don Rarraba a matsayin Synthetic:
Gyaran sinadarai: HEC an samo shi daga cellulose ta hanyar tsarin gyare-gyaren sinadarai wanda ya haɗa da amsawar cellulose tare da ethylene oxide. Ana ɗaukar wannan canjin sinadari na roba a yanayi.
Samar da Masana'antu: HEC da farko an samar da shi ta hanyar hanyoyin masana'antu da ke tattare da halayen sarrafawa da matakan tsarkakewa, waɗanda ke da alaƙa da samar da fili na roba.
Digiri na gyare-gyare: Matsayin maye gurbin a cikin HEC ana iya sarrafa shi daidai lokacin haɗuwa, yana nuna asalin roba.
Hujja don Rabewa azaman Halitta:
An samo daga Cellulose: HEC daga ƙarshe an samo shi daga cellulose, polymer na halitta da yawa da ake samu a cikin tsire-tsire.
Tushen Sabuntawa: Cellulose, kayan farawa don samar da HEC, ana samun su daga albarkatu masu sabuntawa irin su ɓangaren litattafan almara da auduga.
Biodegradability: Kamar cellulose, HEC ne biodegradable, rushe zuwa cikin m byproducts a cikin yanayi a kan lokaci.
Kwatankwacin Aiki da Cellulose: Duk da gyare-gyaren sinadarai, HEC tana riƙe da yawancin kaddarorin cellulose, irin su solubility a cikin ruwa da haɓakar rayuwa.
hydroxyethylcellulose wani nau'in nau'in polymer ne wanda aka samo daga cellulose ta hanyar gyaran sinadarai. Yayin da samarwarsa ya ƙunshi halayen roba da hanyoyin masana'antu, daga ƙarshe an samo shi daga tushen halitta da sabuntawa. Muhawarar kan ko ya kamata a rarraba HEC a matsayin na halitta ko na roba yana nuna rikitattun ma'anar waɗannan sharuɗɗan a cikin mahallin gyare-gyaren polymers na halitta. Duk da haka, haɓakar halittunsa, haɓaka mai sabuntawa, da kamanceceniya na aiki zuwa cellulose suna ba da shawarar cewa yana da halaye na mahaɗar halitta da na roba, yana ɓarna iyakoki tsakanin rabe-raben biyu.
Lokacin aikawa: Afrilu-01-2024