Hydroxyethyl cellulose (HEC), a na-acha ọcha ma ọ bụ ìhè edo edo, enweghị isi, na-adịghị egbu egbu fibrous ma ọ bụ powdery siri ike, kwadebere site etherification nke alkaline cellulose na ethylene oxide (ma ọ bụ chlorohydrin), nke genus Nonionic soluble cellulose ethers. N'ihi na HEC nwere ezigbo ihe nke ịgbasa, nkwụsịtụ, ịgbasa, emulsifying, bonding, film-forming, na-echebe mmiri na inye nchebe colloid, a na-eji ya eme ihe n'ọtụtụ ebe na nchọpụta mmanụ, mkpuchi, ihe owuwu, ọgwụ na nri, textiles, papermaking and polymers. Polymerization na mpaghara ndị ọzọ.
Mgbe hydroxyethyl cellulose zutere agba nke mmiri?
Dị ka a na-abụghị ionic surfactant, hydroxyethyl cellulose nwere ihe ndị a na mgbakwunye na ndim, suspending, bonding, flotation, film-forming, dispersing, water njide na inye nchebe colloid:
HEC na-agbaze na mmiri ọkụ ma ọ bụ mmiri oyi, ọ naghị emepụta ya na okpomọkụ dị elu ma ọ bụ na-esi ísì ụtọ, na-eme ka ọ nwee ọdịdị dị iche iche nke solubility na viscosity, yana gelling na-abụghị thermal;
Ikike njide mmiri dị okpukpu abụọ nke methyl cellulose, ọ nwekwara usoro nhazi ka mma;
E jiri ya tụnyere methyl cellulose a ma ama na hydroxypropyl methyl cellulose, ikike nkesa nke HEC bụ nke kachasị njọ, ma ikike colloid nchebe bụ ike kachasị ike;
Ọ bụ na-abụghị ionic na nwere ike ibikọ ọnụ na ọtụtụ ndị ọzọ mmiri-soluble polymers, surfactants, na salts. Ọ bụ ezigbo colloidal thickener maka elu-etinye uche electrolyte ngwọta.
Kedu ka esi eji hydroxyethyl cellulose mee ihe?
Tinye ozugbo n'oge mmepụta - usoro a bụ nke kachasị mfe ma na-ewe obere oge:
Malite na-akpalite na-aga n'ihu na obere ọsọ ma jiri nwayọọ nwayọọ fụchaa hydroxyethyl cellulose n'ime ngwọta ma nọgide na-akpali ruo mgbe a na-agbanye ihe niile. Mgbe ahụ tinye ihe nchekwa na ihe mgbakwunye dị iche iche. Dị ka pigments, dispersing enyemaka, amonia, wdg kpalie ruo mgbe niile hydroxyethyl cellulose bụ kpamkpam etisasịwo (na viscosity nke ngwọta na-abawanye budata) tupu agbakwunyere ndị ọzọ mmiri na usoro na-eme mmeghachi omume.
Ejiri nne mmanya
Ọ bụ iji kwadebe mmanya nne nwere nnukwu uche dị elu, wee tinye ya na ngwaahịa ahụ. Uru nke usoro a bụ na ọ nwere mgbanwe dị ukwuu ma nwee ike itinye ya ozugbo na ngwaahịa emechara, mana a ga-echekwa ya nke ọma. Usoro nke usoro a yiri ọtụtụ usoro na Usoro 1; ihe dị iche bụ na ọ dịghị mkpa maka onye na-eme ka ọkpụkpụ dị elu, ma ọ bụ naanị ụfọdụ ndị na-eme ihe ike na-enwe ike zuru ezu iji mee ka hydroxyethyl cellulose na-agbasasị n'otu n'otu na ngwọta nwere ike iji mee ihe, ma nọgide na-emegharị ruo mgbe agbazere kpamkpam n'ime ngwọta viscous. Otú ọ dị, a ghaghị iburu n'obi na a ga-agbakwunye ọgwụ antifungal na nne mmanya ozugbo enwere ike.
Ndụmọdụ dị mma:
Ebe ọ bụ na hydroxyethyl cellulose nke a na-eme n'elu bụ ntụ ntụ ma ọ bụ siri ike siri ike, mgbe ị na-akwadebe mmanya na-egbu mmanya hydroxyethyl cellulose, chetara gị ka ị ṅaa ntị n'ihe ndị a:
Tupu na mgbe ịgbakwunye hydroxyethyl cellulose, ọ ga-anọgide na-akpali akpali ruo mgbe ngwọta bụ kpamkpam transperent na doro anya;
A ghaghị ịgbanye ya n'ime gbọmgbọm agwakọta nwayọọ nwayọọ, ma ejikọtala lumps ma ọ bụ spheroids na hydroxyethyl cellulose n'ime gbọmgbọm agwakọta;
Mmiri okpomọkụ na pH uru nke mmiri nwere mmekọrịta dị ịrịba ama na mgbasa nke hydroxyethyl cellulose, n'ihi ya, e kwesịrị ilebara ya anya pụrụ iche;
Unu tinye ụfọdụ alkaline bekee na ngwakọta tupuhydroxyethyl cellulosea na-etinye ntụ ntụ na mmiri. Ịkwalite uru pH mgbe ịsachara ga-enyere aka igbari;
Dị ka o kwere mee, tinye onye na-ahụ maka antifungal n'ọdịnihu;
Mgbe ị na-eji hydroxyethyl cellulose viscosity dị elu, ịta mmanya nne ekwesịghị ịdị elu karịa 2.5-3% (site na ibu), ma ọ bụghị ya siri ike ijide nne mmanya.
Oge nzipu: Eprel-28-2024