Hydroxypropylcellulose (HPC) bụ ihe sintetịt sitere na cellulose, polymer eke dị na mgbidi cell osisi. Mmepụta nke hydroxypropylcellulose gụnyere mgbanwe kemịkalụ nke cellulose site na usoro mmeghachi omume. Mgbanwe a na-enye cellulose ihe ụfọdụ na-eme ka ọ baa uru n'ọtụtụ ụlọ ọrụ mmepụta ihe na ọgwụ.
Ọdịdị nke hydroxypropylcellulose:
Hydroxypropylcellulose bụ hydroxyalkyl nke sitere na cellulose nke a na-ejikọta otu hydroxypropyl na ọkpụkpụ azụ cellulose. Ọkpụkpụ azụ cellulose n'onwe ya bụ eriri ahịrị ahịrị nke nkeji glucose jikọtara ya na njikọ β-1,4-glycosidic. A na-ewebata otu Hydroxypropyl site n'imeghachi cellulose na propylene oxide n'ihu ihe na-akpata alkaline.
Ogo nke nnọchi (DS) bụ isi ihe na-akọwa nhazi nke hydroxypropylcellulose. Ọ na-anọchi anya nkezi ọnụọgụ hydroxypropyl otu glucose n'ime yinye cellulose. Enwere ike ịchịkwa DS n'oge usoro njikọ, na-enye ohere mmepụta nke hydroxypropylcellulose na ogo dị iche iche nke nnọchi iji mezuo ihe achọrọ ngwa ngwa.
Njikọ nke hydroxypropylcellulose:
Njikọ nke hydroxypropylcellulose gụnyere mmeghachi omume n'etiti cellulose na propylene oxide. A na-emekarị mmeghachi omume a n'ihu ihe na-akpata isi dị ka sodium hydroxide. Ihe na-eme ka alkaline na-akwalite oghere nke mgbanaka epoxy na propylene oxide, na-eme ka mgbakwunye nke hydroxypropyl dị iche iche na agbụ cellulose.
A na-emekarị mmeghachi omume na ihe mgbaze na okpomọkụ na oge mmeghachi omume na-ejikwa nlezianya na-achịkwa iji nweta ogo achọrọ nke nnọchi. Mgbe mmeghachi omume ahụ gasịrị, a na-asachapụ ngwaahịa ahụ site na usoro dị ka ịsacha na nzacha iji wepụ ihe ọ bụla reagents ma ọ bụ ngwaahịa sitere na ya.
Njirimara nke Hydroxypropyl Cellulose:
Solubility: Hydroxypropylcellulose bụ soluble n'ụdị ihe mgbaze dị iche iche, gụnyere mmiri, ethanol, na ọtụtụ ihe mgbaze organic. Ihe onwunwe solubility a na-eme ka ọ dị mma maka ngwa dị iche iche.
Viscosity: Ịgbakwunye otu hydroxypropyl na cellulose na-abawanye solubility ma gbanwee njirimara viscosity nke polymer. Nke a na-eme ka hydroxypropylcellulose bara uru n'ụdị ọgwụ, mgbe mgbe dị ka ihe na-agbapụta ma ọ bụ gelling.
Nhazi ihe nkiri: Hydroxypropylcellulose nwere ike ịmepụta ihe nkiri na-agbanwe agbanwe na nke doro anya, na-eme ka ọ dị mma maka mkpuchi, ihe nkiri na dị ka ihe nkedo na mbadamba mbadamba.
Thermal Stability: Hydroxypropylcellulose nwere ezigbo nkwụsi ike nke okpomọkụ, na-enye ohere iji ya mee ihe n'ọtụtụ usoro mmepụta ihe na-enweghị mmebi dị ukwuu.
Ndakọrịta: Ọ dakọtara na ọtụtụ polymers ndị ọzọ na ihe ndị ọzọ, na-eme ka uru ya dị na usoro ọgwụ na ịchọ mma.
Ngwa nke Hydroxypropyl Cellulose:
Pharmaceuticals: Hydroxypropylcellulose na-eji ọtụtụ ebe na ụlọ ọrụ ọgwụ dị ka ihe nkedo na mbadamba formulations, a viscosity modifier na mmiri mmiri ụdị onunu ogwu, na ihe nkiri na-akpụ ihe na covering maka ọnụ onunu ogwu ụdị.
Ngwaahịa nlekọta onwe onye: N'ihe ịchọ mma na ngwaahịa nlekọta onwe onye, a na-eji hydroxypropylcellulose mee ihe dị ka ihe na-agbapụta, stabilizer na onye na-emepụta ihe nkiri na ngwaahịa ndị dị ka ude, lotions na nhazi ntutu isi.
Ngwa ụlọ ọrụ: N'ihi ihe nkiri na-emepụta ihe na ihe ntanye, hydroxypropylcellulose nwere ike iji mee ihe n'ọtụtụ ụlọ ọrụ mmepụta ihe, gụnyere mkpuchi, adhesives na dị ka ihe nkedo na mmepụta nke ihe ndị a kpụrụ akpụ.
Ụlọ ọrụ nri: N'ụlọ ọrụ nri, a pụrụ iji hydroxypropylcellulose mee ihe dị ka ihe na-eme ka ihe na-eme ka ọ sie ike ma na-eme ka ahụ sie ike na ụfọdụ usoro nri.
Ụlọ ọrụ akwa: Hydroxypropyl cellulose nwere ike iji na ụlọ ọrụ textiles na-emepụta ihe nkiri na ihe nrapado iji nyere aka na njedebe nke textiles.
Hydroxypropyl cellulose bụ ihe nrụpụta cellulose gbanwere nke a na-ejikarị na ọgwụ, ngwaahịa nlekọta onwe onye, na ngwa ụlọ ọrụ dị iche iche n'ihi solubility ya, ihe na-agbanwe viscosity, ikike imepụta ihe nkiri, yana ndakọrịta na ngwa ngwa ndị ọzọ. Ntugharị ya na njikwa njikwa na-eme ka ọ bụrụ polymer bara uru na ngwa dị iche iche.
Oge nzipu: Dec-26-2023