Hydroxyethylcellulose(HEC) bụ polymer vasatail nke na-achọta ngwa dị iche iche n'ofe ụlọ ọrụ dị iche iche n'ihi njirimara ya pụrụ iche. N'ịbụ nke sitere na cellulose, otu n'ime ihe ndị na-emepụta ihe na-emepụta ihe na-emepụta ihe na-emepụta ihe, HEC enwetawo nlebara anya dị ukwuu maka mmiri solubility ya, ọdịdị na-abụghị nke ionic, na ike ịmepụta ngwọta viscoelastic. Ntuziaka a zuru oke na-enyocha nhazi, ihe onwunwe, njikọ, ngwa, na ihe nwere ike ime n'ọdịnihu nke hydroxyethylcellulose.

Ọdịdị na Njirimara nke Hydroxyethylcellulose:

HEC bụ ihe nrụpụta nke cellulose, polysaccharide linear nke mejupụtara nkeji glucose ugboro ugboro jikọtara site na β (1→4) njikọ glycosidic. Otu hydroxyl (-OH) n'akụkụ ọkpụkpụ azụ cellulose na-enye saịtị maka mgbanwe kemịkalụ, na-eduga na ịmepụta ihe dị iche iche cellulose dị ka HEC. N'ihe banyere HEC, a na-ewebata otu hydroxyethyl (-CH2CH2OH) na ọkpụkpụ azụ cellulose site na mmeghachi omume etherification.

Ogo nke nnọchi (DS), nke na-ezo aka na nkezi ọnụọgụ nke otu hydroxyethyl kwa otu anhydroglucose, na-emetụta njirimara nke HEC. Ụkpụrụ DS dị elu na-ebute ụbara solubility na mmiri na ibelata ọchịchọ ịmepụta gels. Ibu molekụla na-arụkwa ọrụ dị oke mkpa n'ịchọpụta njirimara rheological HEC, yana polymer dị arọ nke dị elu na-egosipụtakarị arụmọrụ ka ukwuu.

HEC na-egosipụta ihe dị ịrịba ama mmiri-soluble, na-eme ka ọ bara uru nke ukwuu na nhazi mmiri. Mgbe agbazere n'ime mmiri, HEC na-emepụta ihe ngwọta doro anya na enweghị agba na omume pseudoplastic, nke pụtara viscosity na-ebelata na ọnụ ọgụgụ shear na-abawanye. Omume rheological a na-achọsi ike n'ọtụtụ ngwa, n'ihi na ọ na-enye ohere maka ngwa ngwa ngwa ngwa na ịgbasa ngwaahịa ndị nwere HEC.

Njikọ nke Hydroxyethylcellulose:

Njikọ nke HEC na-agụnye mmeghachi omume nke cellulose na ethylene oxide na ọnụnọ nke alkali catalysts n'okpuru ọnọdụ a na-achịkwa. Usoro a na-emekarị na mmiri mmiri na-ekpo ọkụ na okpomọkụ dị elu, a pụkwara ịchịkwa oke etherification site n'ịgbanwe usoro mmeghachi omume dị ka okpomọkụ, oge mmeghachi omume, na nha nke cellulose na ethylene oxide.

Mgbe mmeghachi omume ahụ gasịrị, a na-asachapụ hydroxyethylcellulose nke na-esi na ya pụta iji wepụ adịghị ọcha na reagents na-adịghị emezigharị. Ụzọ nchacha nwere ike ịgụnye mmiri ozuzo, nzacha, ịsacha na usoro ihicha iji nweta ngwaahịa ikpeazụ n'ụdị achọrọ, dị ka ntụ ntụ ma ọ bụ granules.

Ngwa nke Hydroxyethylcellulose:

1. Ngwaahịa Nlekọta Onwe Onye: A na-eji HEC eme ihe n'ọtụtụ ebe na ụlọ ọrụ nlekọta onwe ya maka ihe na-eme ka ọ sie ike, na-eme ka ọ kwụsie ike, na imepụta ihe nkiri. Enwere ike ịchọta ya na ngwaahịa dị iche iche, gụnyere shampoos, conditioners, washs body, creams, lotions, na gels. N'ime usoro ndị a, HEC na-eme ka viscosity dịkwuo mma, na-eme ka ọdịdị ngwaahịa dịkwuo mma, na-eme ka emulsions guzosie ike.
2. Pharmaceuticals: N'ime ụlọ ọrụ ọgwụ, HEC na-eje ozi dị ka ihe bara uru n'ụdị mbadamba mbadamba, ebe ọ na-arụ ọrụ dị ka onye na-ekekọta, nke na-agbasa, ma ọ bụ onye na-ahapụ ya. Ikike ya imepụta ihe ngwọta doro anya na-enweghị agba na-eme ka ọ dị mma maka ojiji na ngwọta ọnụ, nkwusioru, na nkwadebe ophthalmic. Na mgbakwunye, a na-eji HEC eme ihe n'ụdị usoro dị ka manu na gels maka njirimara rheological na biocompatibility ya.
3. Ụlọ ọrụ nri: A na-arụ HEC n'ọrụ na ụlọ ọrụ nri dị ka onye na-agba ume, stabilizer, na emulsifier na ngwaahịa dị iche iche, gụnyere sauces, uwe, ngwaahịa mmiri ara ehi, na ihe ọṅụṅụ. Ọ na-enyere aka melite udidi, gbochie syneresis, ma kwalite ọnụ na nhazi nri. Nkwekọrịta HEC na ọtụtụ ihe oriri na-edozi ahụ na ikike ya iguzogide ọnọdụ nhazi na-eme ka ọ bụrụ nhọrọ kacha mma maka ndị na-emepụta ihe oriri.
4. Agba na mkpuchi: A na-eji HEC eme ihe na agba na mkpuchi mmiri iji chịkwaa rheology na melite ngwa ngwa. Ọ na-arụ ọrụ dị ka onye na-ebu ibu, na-egbochi ịla azụ ma na-enye njirimara nhazi ọkwa dị mma. HEC na-enyekwa aka na nkwụsi ike na ndụ ndụ nke ụdị agba, na-ahụ na nkesa nke pigmenti na ihe mgbakwunye otu.
5. Ihe eji arụ ọrụ: N'ime ụlọ ọrụ ihe owuwu, a na-eji HEC mee ihe n'ụdị cimentious dị ka adhesives tile, grouts, na ngwa agha. Ọ na-arụ ọrụ dị ka rheology modifier, na-eme ka arụ ọrụ dịkwuo mma, nguzogide sag, na njigide mmiri. Usoro ndị dabere na HEC na-egosipụta ike njikọ agbakwunyere yana mbelata mbelata, na-eduga n'ihe owuwu na-adịgide adịgide na nke mara mma.

Mmepe na ntụzịaka nyocha n'ọdịnihu:

1. Ụdị dị elu: Mgbalị nyocha na-aga n'ihu na-achọ ịmepụta usoro ọhụrụ na-ejikọta HEC maka ịrụ ọrụ na arụmọrụ dị elu. Nke a na-agụnye mmepe nke hydrogels multifunctional, usoro microencapsulation, na ihe na-akpali akpali maka nnyefe ọgwụ ezubere iche na ngwa ntọhapụ a na-achịkwa.
2. Ngwa Biomedical: Site na mmasị na-eto eto na ihe ndị na-ahụ maka ihe ndị na-emepụta ihe na ihe ndị na-emepụta ihe, enwere ike HEC ịchọta ngwa n'ọhịa ahụike dịka injinịa anụ ahụ, ọgwụgwọ ọnya, na nnyefe ọgwụ. Nnyocha na hydrogels dabeere na HEC maka mmeghari anụ ahụ na scaffolds maka omenala cell na-aga n'ihu, na-arụpụta ihe na-ekwe nkwa.
3. Ụzọ Synthesis Green: Mmepe nke na-adigide na usoro mmekọrịta enyi na enyi maka HEC bụ mpaghara nyocha nke na-arụsi ọrụ ike. A na-etinye ụkpụrụ kemịkalụ ndụ ndụ n'ọrụ iji belata mmetụta gburugburu ebe obibi nke mmepụta HEC site n'iji nri nri emeghari ohuru, ibelata mmepụta ihe mkpofu, na ịkwalite ọnọdụ mmeghachi omume.
4. Mgbanwe arụ ọrụ: A na-enyocha usoro iji kwado njirimara nke HEC site na mgbanwe kemịkalụ na copolymerization na polymers ndị ọzọ. Nke a na-agụnye iwebata otu ndị na-arụ ọrụ maka mmekọrịta dị iche iche, dị ka nzaghachi pH, mmetụta okpomọkụ, na bioactivity, iji gbasaa ngwa ngwa nwere ike.
5. Ngwa Nanotechnology: Njikọ nke HEC na nanomaterials na nanoparticles na-ekwe nkwa maka mmepe nke ihe dị elu nke nwere ihe ọhụrụ. Nanocomposites nke HEC, nanogels, na nanofibers na-egosi ikike maka ngwa na nnyefe ọgwụ, injinia anụ ahụ, nghọta, na ngbanwe gburugburu ebe obibi.

Mmechi:

Hydroxyethylcellulose(HEC) pụtara dị ka polymer na-agbanwe agbanwe nke nwere ọtụtụ ngwa n'ofe ụlọ ọrụ dị iche iche. Ngwakọta ya pụrụ iche nke mmiri-solubility, rheological Njirimara, na biocompatibility na-eme ka ọ bụrụ ihe bara uru na ngwaahịa nlekọta onwe onye, ​​ọgwụ ọgwụ, usoro nri, agba, mkpuchi na ihe owuwu. Mgbalị nyocha na-aga n'ihu na-elekwasị anya n'ịgbasawanye ike nke HEC site na ịmepụta usoro nhazi dị elu, ụzọ nchịkọta akwụkwọ ndụ akwụkwọ ndụ, mgbanwe ọrụ, na ijikọta na teknụzụ ndị na-apụta. Dị ka ndị dị otú ahụ, HEC na-aga n'ihu na-arụ ọrụ dị mkpa n'ịkwọ ụgbọala ọhụrụ na izute mkpa na-agbanwe agbanwe nke ụlọ ọrụ dị iche iche na ahịa ụwa.