Hydroxyethyl cellulose (HEC) wani abu ne na polymer wanda ba na ionic ba wanda ke narkewa cikin ruwa wanda ake amfani da shi sosai a fannin kayan kwalliya, magunguna, fenti, shafi, gini da sauran fannoni. Yana da kauri mai kyau, dakatarwa, watsawa, emulsification, samar da fim, riƙe ruwa da sauran kaddarorinsa, don haka ya zama muhimmin wakili na taimako a masana'antu da yawa. Duk da haka, ba a samun hydroxyethyl cellulose kai tsaye daga kayan halitta ba, amma ana samunsa ta hanyar gyara cellulose na halitta ta hanyar sinadarai. Don haka, don fahimtar tushen halitta na hydroxyethyl cellulose, da farko muna buƙatar fahimtar tushen da tsarin cellulose.
Tushen halitta na cellulose
Cellulose yana ɗaya daga cikin polymers na halitta mafi yawa a duniya kuma yana nan a cikin bangon tantanin halitta na tsire-tsire, musamman a cikin tsire-tsire masu itace, auduga, flax da sauran zaruruwan tsire-tsire. Yana da muhimmin sashi a cikin tsarin shuka kuma yana ba da ƙarfi da kwanciyar hankali na injiniya. Babban sashin cellulose shine ƙwayar glucose, wanda aka haɗa ta hanyar haɗin β-1,4-glycosidic don samar da tsarin sarkar mai tsayi. A matsayin kayan polymer na halitta, cellulose yana da kyawawan halaye na zahiri da na sinadarai, wanda hakan ya sa ya zama muhimmin kayan aiki ga abubuwa daban-daban.
Tsarin shiri na hydroxyethyl cellulose
Duk da cewa cellulose kanta tana da kyawawan halaye masu yawa, iyakokin amfaninta suna da iyaka zuwa wani mataki. Babban dalili shine cellulose ba ta da isasshen narkewa, musamman ƙarancin narkewa a cikin ruwa. Domin inganta wannan sinadari, masana kimiyya suna gyara cellulose ta hanyar sinadarai don shirya nau'ikan abubuwan da suka samo asali daga cellulose. Hydroxyethyl cellulose wani cellulose ne mai narkewa cikin ruwa wanda ake samu ta hanyar ethoxylating cellulose na halitta ta hanyar amsawar sinadarai.
A cikin takamaiman tsarin shiri, ana fara narkar da cellulose na halitta a cikin maganin alkali, sannan a ƙara ethylene oxide zuwa tsarin amsawa. Haɗakar ethylene oxide da ƙungiyoyin hydroxyl a cikin cellulose yana faruwa don samar da hydroxyethyl cellulose. Wannan gyare-gyaren yana ƙara yawan hydrophilicity na sarƙoƙin cellulose, ta haka yana inganta narkewa da halayen danko a cikin ruwa.
Manyan tushen albarkatun ƙasa
Babban sinadarin halitta da ake amfani da shi wajen shirya sinadarin hydroxyethyl cellulose shine cellulose, kuma tushen halitta na cellulose sun hada da:
Itace: Yawan sinadarin cellulose a cikin itace yana da yawa, musamman a cikin itacen coniferous da mai ganye mai faɗi, inda cellulose zai iya kaiwa kashi 40%-50%. Itace yana ɗaya daga cikin mahimman hanyoyin samar da cellulose a masana'antu, musamman a fannin yin takarda da samar da abubuwan da suka samo asali daga cellulose.
Auduga: Zaren auduga kusan an yi shi ne da cellulose tsantsa, kuma sinadarin cellulose a cikin auduga ya kai sama da kashi 90%. Saboda tsarkinsa mai yawa, ana amfani da zaren auduga wajen shirya sinadaran cellulose masu inganci.
Zaren tsirrai kamar flax da hemp: Waɗannan zaren tsire-tsire suna da wadataccen sinadarin cellulose, kuma saboda waɗannan zaren tsire-tsire galibi suna da ƙarfin injina mai yawa, suna kuma da wasu fa'idodi a cikin cire ƙwayoyin cellulose.
Sharar noma: gami da bambaro, bambaro na alkama, bambaro na masara, da sauransu. Waɗannan kayan suna ɗauke da wani adadin cellulose, kuma ana iya cire cellulose daga cikinsu ta hanyar hanyoyin magani masu dacewa, wanda ke samar da tushen kayan da aka samo daga cellulose mai araha kuma mai sabuntawa don samar da abubuwan da aka samo daga cellulose.
Yankunan amfani da hydroxyethyl cellulose
Saboda takamaiman kaddarorin hydroxyethyl cellulose, ana amfani da shi sosai a fannoni da yawa. Ga manyan fannoni da dama na amfani:
Masana'antar gini: Ana amfani da sinadarin Hydroxyethyl cellulose sosai a kayan gini a matsayin mai kauri da kuma mai riƙe ruwa, musamman a cikin turmi na siminti, gypsum, foda putty da sauran kayan aiki, waɗanda zasu iya inganta gine-gine da kuma riƙe ruwa na kayan yadda ya kamata.
Masana'antar sinadarai ta yau da kullun: A cikin sabulun wanki, kayayyakin kula da fata, shamfu da sauran kayayyakin sinadarai na yau da kullun, ana amfani da hydroxyethyl cellulose a matsayin mai kauri da mai daidaita samfurin don inganta jin daɗin samfurin da kwanciyar hankali.
Fenti da Rufi: A masana'antar Rufi, ana amfani da hydroxyethyl cellulose a matsayin mai kauri da kuma maganin sarrafa rheology don inganta aikin murfin da kuma guje wa yin lanƙwasa.
Fannin magunguna: A cikin shirye-shiryen magunguna, ana iya amfani da hydroxyethyl cellulose a matsayin abin ɗaurewa, mai kauri da kuma wakili mai dakatarwa ga ƙwayoyin cuta don inganta halayen sakin magunguna da kwanciyar hankali.
Duk da cewa hydroxyethyl cellulose ba abu ne da ke faruwa a zahiri ba, amma ainihin kayansa na asali, cellulose, yana nan a cikin tsirrai a yanayi. Ta hanyar gyaran sinadarai, ana iya canza cellulose na halitta zuwa hydroxyethyl cellulose tare da kyakkyawan aiki kuma ana amfani da shi a masana'antu daban-daban. Tsire-tsire na halitta kamar itace, auduga, flax, da sauransu suna samar da wadataccen tushen kayan masarufi don samar da hydroxyethyl cellulose. Tare da ci gaban kimiyya da fasaha da karuwar buƙatun masana'antu, ana kuma ci gaba da inganta tsarin samar da hydroxyethyl cellulose, kuma ana sa ran zai nuna ƙimarsa ta musamman a fannoni da yawa a nan gaba.
Lokacin Saƙo: Oktoba-23-2024