Nhazi na nhazi nke Hydroxyethyl Cellulose

Hydroxyethyl cellulose(HEC) bụ cellulose ether gbanwetụrụ nke sitere na cellulose site na mmeghachi omume kemịkalụ nke na-ewebata otu hydroxyethyl n'ime usoro cellulose. A na-emetụta nhazi na nhazi nke HEC site na ogo nke nnọchi (DS), ịdị arọ molecular, na nhazi nke otu hydroxyethyl n'akụkụ eriri cellulose.

Isi ihe gbasara nhazi na nhazi nke HEC:

1. Ọdịdị Cellulose bụ isi:
   • Cellulose bụ polysaccharide linear nke mejupụtara nkeji glucose ugboro ugboro jikọtara ya na njikọ β-1,4-glycosidic. Ọ bụ polymer na-emekarị nke a na-ahụ na mgbidi cell nke osisi.
2. Mmalite nke otu Hydroxyethyl:
   • Na njikọ nke HEC, a na-ewebata otu hydroxyethyl site na iji dochie otu hydroxyl (-OH) nke usoro cellulose na otu hydroxyethyl (-OCH2CH2OH).
3. Ogo nke nnọchi (DS):
   • Ogo nke nnọchi (DS) na-anọchi anya nkezi ọnụọgụ hydroxyethyl otu otu anhydroglucose n'ime agbụ cellulose. Ọ bụ oke dị oke egwu nke na-emetụta mmiri solubility, viscosity, na ihe ndị ọzọ nke HEC. DS dị elu na-egosi ogo ngbanwe dị elu.
4. Arọ Molecular:
   • Ụdị ihe omimi nke HEC dịgasị iche dabere na usoro mmepụta ihe na ngwa a chọrọ. Ọkwa dị iche iche nke HEC nwere ike ịnwe ihe dị arọ dị iche iche, na-emetụta njirimara ha.
5. Ndozi na Ngwọta:
   • Na ngwọta, HEC na-egosipụta ngbanwe ogologo. Mwebata nke otu hydroxyethyl na-eme ka mmiri dị ike na polymer, na-enye ya ohere ịmepụta ngwọta doro anya na viscous na mmiri.
6. Ngwọta mmiri:
   • HEC bụ mmiri-soluble, na hydroxyethyl iche iche na-enye aka na ya emelitere solubility tụnyere nwa afọ cellulose. Solubility a bụ ihe dị oke mkpa na ngwa dịka mkpuchi, nrapado na ngwaahịa nlekọta onwe onye.
7. Ngwakọta hydrogen:
   • Ọnụnọ nke otu hydroxyethyl n'akụkụ agbụ cellulose na-enye ohere maka mmekọrịta mmekọrịta hydrogen, na-emetụta usoro na omume nke HEC na ngwọta.
8. Njirimara Rheological:
   • Njirimara rheological nke HEC, dị ka viscosity na ịkpa agwa, na-emetụta ma ịdị arọ molekụla na ogo nke nnọchi. A maara HEC maka ihe ọkụkụ ya dị irè na ngwa dị iche iche.
9. Njirimara ndị na-emepụta ihe nkiri:
   • Ụfọdụ akara ule nke HEC nwere ihe ndị na-emepụta ihe nkiri, na-enye aka n'iji ha eme ihe na mkpuchi ebe nhazi nke ihe nkiri na-aga n'ihu na nke edo na-achọsi ike.
10. Mmetụta okpomọkụ:
    • Ụfọdụ akara ule HEC nwere ike igosipụta mmetụta okpomọkụ, na-enwe mgbanwe na viscosity ma ọ bụ gelation na nzaghachi na mgbanwe okpomọkụ.
11. Ngwa-dị iche iche akọwapụtara:
    • Ndị na-emepụta ihe dị iche iche nwere ike ịmepụta ọdịiche dị iche iche nke HEC nwere ihe eji eme ihe iji mezuo ihe achọrọ ngwa ngwa.

Na nchịkọta, Hydroxyethyl Cellulose (HEC) bụ cellulose ether nke na-agbaze mmiri nke nwere conformation na ngwọta. Ntinye nke hydroxyethyl dị iche iche na-eme ka mmiri dị nro na-eme ka mmiri dị ike ma na-emetụta ihe ndị na-emepụta ihe na-emepụta ihe na ihe nkiri, na-eme ka ọ bụrụ polymer dị iche iche maka ngwa dị iche iche na ụlọ ọrụ dị ka mkpuchi, adhesives, nlekọta onwe onye, ​​​​na ndị ọzọ. Enwere ike ịhazi nhazi na nhazi nke HEC nke ọma dabere na ihe ndị dị ka ogo nke nnọchi na ịdị arọ molecular.