Thickener hec hydroxyethyl cellulose

Hydroxyethyl cellulose (HEC) bụ ihe na-emepụta nonionic cellulose nke a na-ejikarị eme ihe na ụlọ ọrụ dị iche iche n'ihi ọmarịcha ihe na-eme ka ọ dịkwuo mma, nkwụsịtụ na emulsifying. HEC bụ polymer soluble mmiri nke nwere ike ịgbaze ngwa ngwa na mmiri oyi iji mepụta ngwọta doro anya na enweghị agba. A na-ejikarị HEC eme ihe dị ka onye na-agba ume n'ọtụtụ ngwa ngwa, gụnyere mkpuchi, adhesives, ngwaahịa nlekọta onwe onye, ​​​​na ọgwụ.

A na-emepụta HEC site n'ịgbanwe cellulose eke, polymer nke nwere nkeji glucose jikọtara ọnụ site na β(1→4) glycosidic bonds. Mgbanwe nke cellulose gụnyere iwebata otu hydroxyethyl (-CH2CH2OH) na nkeji anhydroglucose nke ọkpụkpụ azụ cellulose. Mgbanwe a na-eme ka polymer soluble mmiri nke nwere ike ịmepụta njikọ hydrogen na ụmụ irighiri mmiri, na-eduga n'ịmepụta ngwọta viscous.

HEC bụ ihe na-eme ka ọkpụkpụ dị irè n'ihi ike ya ịmepụta ihe dị ka gel mgbe a na-agbakwunye ya na ngwọta. Otu hydroxyethyl dị na molekul HEC nwere ike imekọrịta ihe na mkpụrụ ndụ mmiri, na-eme ka e nwee njikọ hydrogen. Njikọ hydrogen dị n'etiti molekul HEC na mmiri mmiri na-eme ka mkpụrụ ndụ HEC ghọọ hydrated ma gbasaa na nha. Dị ka molekul HEC na-agbasawanye, ọ na-emepụta usoro netwọk akụkụ atọ nke na-ejide mmiri na ihe ndị ọzọ gbazere, na-eme ka mmụba nke viscosity nke ngwọta.

Ihe dị iche iche na-emetụta ike nke HEC, gụnyere ntinye nke HEC na ngwọta, okpomọkụ, na pH. Ọnụ ọgụgụ dị elu nke HEC na ngwọta na-eduga na mmụba dị ịrịba ama na viscosity. Otú ọ dị, ịba ụba nke HEC karịrị otu ebe nwere ike iduga mbelata nke viscosity n'ihi nhazi nke nchịkọta. Okpomọkụ ahụ na-emetụtakwa ike nke HEC, yana oke okpomọkụ na-eduga n'ibelata viscosity. The pH nke ngwọta nwekwara ike imetụta ndim ike nke HEC, na elu pH ụkpụrụ na-eduga mbelata na viscosity.

A na-ejikarị HEC eme ihe dị ka onye na-agba agba na ngwa dị iche iche, gụnyere mkpuchi na agba. Na mkpuchi, a na-agbakwunye HEC na nhazi ahụ iji melite njirimara rheological nke mkpuchi. Njirimara rheological nke mkpuchi na-ezo aka na ike ya na-asọba na ọkwa dị n'elu. HEC nwere ike imeziwanye ihe na-asọpụta na nhazi ọkwa nke mkpuchi site n'ịbawanye viscosity ya na ibelata ọdịdị ya. HEC nwekwara ike imeziwanye nkwụsi ike nke mkpuchi ahụ site na igbochi nhazi nke pigmenti na ihe ndị ọzọ siri ike.

Na adhesives, a na-eji HEC dị ka ihe na-eme ka ọ dịkwuo mma iji meziwanye viscosity na tackiness nke nrapado. Viscosity nke nrapado dị mkpa maka ike ya iji jide n'elu elu ma nọrọ n'ebe ahụ. HEC nwere ike imeziwanye viscosity nke nrapado ma gbochie ya ịdapụ ma ọ bụ na-agba ọsọ. HEC nwekwara ike melite tackiness nke nrapado, na-ekwe ka ọ na-arapara mma n'elu.

N'ime ngwaahịa nlekọta onwe onye, ​​a na-eji HEC eme ihe dị ka ihe na-eme ka ọkpụkpụ na stabilizer. A na-ejikarị HEC eme ihe na shampoos, conditioners, na ịsacha ahụ iji meziwanye viscosity na udidi ha. HEC nwekwara ike imeziwanye nkwụsi ike nke ngwaahịa ndị a site na igbochi nkewa nke oge na nhazi nke ihe siri ike.

N'ime ọgwụ, a na-eji HEC eme ihe dị ka onye na-ebu ibu na ihe nkwụsịtụ. A na-ejikarị HEC eme ihe na nkwusioru ọnụ iji kwụsịtụ ọgwụ na-adịghị edozi n'ime mmiri mmiri. A pụkwara iji HEC mee ihe dị ka ihe na-esi ísì ụtọ na creams na gels iji meziwanye viscosity na udidi ha.

Na mmechi, HEC bụ a mmiri-soluble polima nke a na-ejikarị dị ka a thickener dị iche iche ọrụ n'ihi na ya magburu onwe ndim, suspending, na emulsifying Njirimara.