Menene hydroxyethyl cellulose?

Menene hydroxyethyl cellulose?

Hydroxyethyl cellulose (HEC), wani fari ko kodadde rawaya, wari, mara guba fibrous ko powdery m, wanda aka shirya ta hanyar etherification na alkaline cellulose da ethylene oxide (ko chlorohydrin), na cikin halittar Nonionic soluble cellulose ethers. Saboda HEC yana da kyawawan kaddarorin irin su thickening, dakatarwa, tarwatsawa, emulsifying, bonding, ƙirƙirar fim, kare danshi da samar da colloid masu kariya, an yi amfani dashi sosai a cikin binciken mai, sutura, gini, magunguna da abinci, yadi, yin takarda da polymers. Polymerization da sauran filayen.

Hydroxyethyl cellulose ana amfani dashi sosai a cikin masana'antar sutura. Bari mu dubi yadda yake aiki a cikin sutura:

Menene ya faru lokacin da hydroxyethyl cellulose ya hadu da suturar ruwa?

A matsayin surfactant ba ionic, hydroxyethyl cellulose yana da wadannan kaddarorin ban da thickening, suspending, dauri, flotation, film-forming, dispersing, ruwa rike da kuma samar da m colloid:

HEC yana narkewa a cikin ruwan zafi ko ruwan sanyi, kuma baya haɓaka a babban zafin jiki ko tafasa, yana sa shi yana da nau'i mai yawa na solubility da danko, da kuma gelling maras zafi;

Ƙarfin riƙewar ruwa shine sau biyu na methyl cellulose, kuma yana da mafi kyawun tsari na kwarara;

Ba-ionic kanta ba zai iya zama tare da nau'in nau'in nau'in polymers masu narkewa da ruwa, surfactants, da salts, kuma yana da kyau mai girma colloidal thickener dauke da high-concentration electrolyte mafita;

Idan aka kwatanta da gane methyl cellulose da hydroxypropyl methyl cellulose, da dispersing ikon.HECshine mafi muni, amma ƙarfin colloid mai karewa shine mafi ƙarfi.

Tunda hydroxyethyl cellulose da aka bi da shi a saman foda ne ko mai ƙarfi mai ƙarfi, Shandong Heda yana tunatar da ku kula da waɗannan abubuwan yayin shirya ruwan innabi na hydroxyethyl cellulose:

(1) Kafin da kuma bayan ƙara hydroxyethyl cellulose, dole ne a ci gaba da motsawa har sai bayani ya zama cikakke kuma bayyananne.

(2) Dole ne a zazzage shi a hankali a cikin ganga mai gauraya, kuma kar a haɗa hydroxyethyl cellulose da hydroxyethyl cellulose kai tsaye a cikin ganga mai yawa ko a cikin nau'i na dunƙule da ƙwallo.

(3) Yanayin zafin ruwa da ƙimar pH na ruwa suna da alaƙa a bayyane ga rushewar hydroxyethyl cellulose, don haka ya kamata a ba da kulawa ta musamman.

(4) Kada a taɓa ƙara wasu abubuwan alkaline a cikin cakuda kafin a jika foda hydroxyethyl cellulose da ruwa. Kiwon pH kawai bayan jika zai taimaka a rushe.

(5) Kamar yadda zai yiwu, ƙara wakili na antifungal a gaba.

(6) Lokacin amfani da high-viscosity hydroxyethyl cellulose, maida hankali na uwa barasa kada ya zama sama da 2.5-3% (ta nauyi), in ba haka ba uwar barasa yana da wuya a rike.