Ịchụsa hydroxyethyl cellulose (HEC) bụ usoro dị oke mkpa na ụlọ ọrụ dị iche iche, gụnyere ọgwụ, ihe ịchọ mma, nri, na ihe owuwu. HEC bụ ihe na-abụghị ionic, polymer soluble mmiri nke sitere na cellulose, nke a na-ejikarị eme ihe dị ka ihe na-eme ka ọ sie ike, na-eme ka ọ dị ike, na-emepụta ihe nkiri. Mgbasa nke ọma nke HEC dị mkpa iji hụ na ọrụ ya na ngwaahịa njedebe.
Okwu Mmalite nke Hydroxyethyl Cellulose (HEC)
Hydroxyethyl cellulose (HEC) bụ polymer vasatail ewepụtara site na cellulose site na mgbanwe kemịkalụ. A na-ejikarị ya na ụlọ ọrụ dịka:
Ọgwụ: A na-eji HEC dị ka ihe ngbanwe viscosity na stabilizer n'ụdị dị iche iche, gụnyere ọgwụ ọnụ na ọgwụ.
Ihe ịchọ mma: A na-eji HEC n'ọrụ na ude, lotions, shampoos, na ngwaahịa nlekọta onwe onye ndị ọzọ dị ka ihe na-eme ka ọ dị arọ na emulsifier.
Nri: A na-eji ya na ngwaahịa nri dị ka onye na-agbapụta, stabilizer, na onye na-ahụ maka gelling.
Mwube: A na-eji HEC eme ihe n'ihe owuwu dị ka agba, nrapado, na ngwaahịa simenti na-eme ka ha dịkwuo mma.
Mkpa nke ịgbasa HEC
Mgbasa nke ọma nke HEC dị oke mkpa iji nweta ihe ndị a chọrọ na ngwaahịa ikpeazụ. Mgbasa nke ọma na-eme ka:
Ịdị n'otu: Nkesa HEC na-ejikọta ya na ngwọta ma ọ bụ matrix.
Ọrụ: HEC nwere ike ịrụzu ọrụ o bu n'obi, dị ka ịgbatị, ịkwado ma ọ bụ imepụta ihe nkiri.
Arụmọrụ: Njirimara arụmọrụ emelitere, gụnyere njikwa viscosity, nkwụsi ike, na udidi.
Economy: Ịkwalite arụmọrụ nke ojiji HEC, ibelata ihe mkpofu, na ibelata ọnụ ahịa mmepụta.
Ụzọ maka ịgbasa HEC
1. Mwepụta igwe:
Na-akpali ma ọ bụ ịgwakọta: Jiri igwe na-akpali akpali, mixers, ma ọ bụ homogenizers iji fesaa HEC n'ime ihe mgbaze ma ọ bụ matriks ji nwayọọ nwayọọ. Gbanwee ọsọ mkpasu iwe na ogologo oge dabere na itinye uche HEC na viscosity chọrọ.
Mkpali ọsọ ọsọ: were ndị na-agba ọsọ ọsọ ma ọ bụ homogenizers maka mgbasa ngwa ngwa, karịsịa maka mkpokọta HEC dị elu ma ọ bụ ngwọta viscous.
2. Usoro hydration:
Pre-Hydration: Tupu igbari HEC na akụkụ nke ihe mgbaze na ụlọ okpomọkụ tupu ịtinye ya na isi ogbe. Nke a na-eme ka mgbasawanye dịkwuo mfe ma na-egbochi njigide.
Mgbakwunye nwayọọ nwayọọ: Tinye HEC nwayọọ nwayọọ na ihe mgbaze na-akpali akpali mgbe niile iji hụ na hydration na mgbasa otu.
3. Njikwa okpomọkụ:
Okpomọkụ kacha mma: Jikwaa usoro mgbasa ozi na oke okpomọkụ kachasị mma iji welie solubility na dispersion kinetics nke HEC. A, ụlọ okpomọkụ na ubé elu okpomọkụ kwesịrị ekwesị maka HEC mgbasa.
Ịsa mmiri na-ekpo ọkụ: Jiri mmiri ịsa ahụ na-ekpo ọkụ ma ọ bụ arịa nwere jaket jikwaa ọnọdụ okpomọkụ n'oge mgbasa, karịsịa maka ngwa chọrọ okpomọkụ dị elu.
4. Ndozi pH:
PH kacha mma: Gbanwee pH nke ihe mgbaze ma ọ bụ mgbasa ozi na oke kachasị maka HEC solubility na mgbasa. N'ozuzu, na-anọpụ iche na ubé alkaline pH ọnọdụ bụ mma maka HEC dispersion.
5. Usoro na-akpachapụ anya:
Ndozi nha nke shear: were usoro na-akpachapụ anya shii site n'ịgbanwe ọnụego shiee n'oge mgbasa. Ọnụ ọgụgụ dị elu dị elu nwere ike inye aka n'ịkwatu mkpokọta HEC na ịkwalite mgbasa.
Iji akụrụngwa Rheological: Jiri akụrụngwa rheological iji nyochaa ma jikwaa ọnụ ahịa ncha n'oge mgbasa, na-ahụ na mgbasa ozi na-agbanwe agbanwe na nke ọma.
6. Mgbasa Nyere Aka:
Nhọrọ Surfactant: Họrọ surfactants kwesịrị ekwesị ma ọ bụ ndị na-achụsa ihe dakọtara na HEC na mgbasa ozi mgbasa. Surfactants nwere ike ibelata esemokwu elu, welie wet, na inye aka na mgbasa nke HEC.
Ntụkwasị anya Surfactant: welie ntinye nke surfactants iji kwado mgbasa nke HEC na-enweghị emetụta ihe onwunwe ya ma ọ bụ arụmọrụ ya na ngwaahịa ikpeazụ.
7. Ultrasonication:
Mgbasa Ultrasonic: Tinye ike ultrasonic na mgbasa ozi HEC site na iji nyocha ultrasonic ma ọ bụ baths. Ultrasonication na-akwalite urughuru size Mbelata, deagglomeration, na edo dispersion nke HEC ahụ na ihe mgbaze ma ọ bụ matriks.
8. Usoro Mbelata nha urughuru:
Egwe ọka ma ọ bụ egweri: Jiri igwe-egwe ọka ma ọ bụ egweri ngwá iji belata urughuru size nke HEC aggregates, ikwado mfe dispersion na melite homogeneity nke dispersion.
Urughiri Size Analysis: Nyochaa na ịchịkwa urughuru size nkesa nke achụsasịwo HEC iji usoro dị ka laser diffraction ma ọ bụ ike ọkụ agbasasị.
9. Usoro njikwa ogo:
Ntụle viscosity: Na-enyocha mgbe niile viscosity nke mgbasa nke HEC n'oge usoro mgbasa ozi iji hụ na agbanwe agbanwe ma nweta ihe ndị rheological chọrọ.
Particle Size Analysis: Mee urughuru size analysis iji chọpụta irè nke dispersion ma hụ na edo nkesa nke HEC ahụ.
Ịchụsa hydroxyethyl cellulose (HEC) nke ọma dị mkpa maka ịnweta ihe ndị a chọrọ na ịrụ ọrụ na ngwa ụlọ ọrụ dị iche iche. N'ọrụ kwesịrị ekwesị dispersion ụzọ, gụnyere n'ibu agitation, hydration usoro, okpomọkụ akara, pH ukpụhọde, shiee-thinning usoro, surfactant enyemaka, ultrasonication, na urughuru size Mbelata, nwere ike hụ na edo dispersion na jirichaa ọrụ nke HEC na ọgwụgwụ ngwaahịa. Na mgbakwunye, imejuputa usoro njikwa mma dị ka nha viscosity na nyocha nha urughuru na-enyere aka ịnọgide na-enwe nkwekọ na ebuli usoro mgbasa ozi. Site n'ịgbaso ụkpụrụ nduzi ndị a, ndị na-emepụta ihe nwere ike ịkwalite arụmọrụ na mma nke usoro HEC dabeere na ụlọ ọrụ dị iche iche.
Oge nzipu: Eprel-09-2024