Kedu ihe bụ hydroxyethyl cellulose?

Hydroxyethyl cellulose (HEC) bụ polymer soluble mmiri nke sitere na cellulose, polysaccharide na-emekarị nke a na-ahụ na osisi. A na-emepụta HEC site na mgbanwe nke cellulose site na mgbakwunye nke ìgwè hydroxyethyl, nke a na-ejikọta na nkeji glucose nke cellulose molecule. Mgbanwe a na-agbanwe ihe onwunwe nke cellulose ma mee ka ọ baa uru n'ụdị ngwa dị iche iche, dịka na nri, ihe ịchọ mma, na ụlọ ọrụ ọgwụ.

HEC bụ polymer na-agbanwe agbanwe nke ukwuu, nke nwere ọtụtụ ihe dị arọ na ogo nke nnọchi, nke na-ekpebi njirimara ya, dị ka solubility, viscosity, na gelation. Ogo nke nnọchi bụ ihe nleba anya nke ọnụ ọgụgụ hydroxyethyl dị iche iche jikọtara na nkeji glucose ọ bụla nke molekul cellulose, ọ nwere ike ịdị site na 1 ruo 3, yana ogo dị elu na-egosi ọnụ ọgụgụ ka ukwuu nke otu hydroxyethyl.

A na-eji HEC eme ihe n'ụdị dị iche iche dị ka onye na-agba ume, stabilizer, na ihe nkedo. Enwere ike iji ya mee ka viscosity nke usoro mmiri mmiri dịkwuo elu, melite ọdịdị na ọnụ nke ngwaahịa nri, ma welie nkwụsi ike nke emulsions. N'ime ụlọ ọrụ na-emepụta ọgwụ, a na-eji HEC mee ihe dị ka onye na-ekekọta maka mbadamba nkume, dị ka ihe na-eme ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe na-emepụta ihe, yana dịka onye na-enye nkwado maka usoro nnyefe ọgwụ.

Otu n'ime ihe kachasị mkpa nke HEC bụ ikike ya ịmepụta gels na mmiri. Mgbe HEC gbazere na mmiri, ọ nwere ike ịmepụta gel site na usoro a maara dị ka hydration. Usoro gelation na-adabere na ogo nke nnọchi, ịdị arọ molecular, na itinye uche nke HEC na ngwọta. Enwere ike ịchịkwa usoro gelation nke HEC site na nhazi nke paramita ndị a, nke na-eme ka ọ baa uru na ngwa dị iche iche.

A na-ejikarị HEC eme ihe n'ụlọ ọrụ nri dị ka ihe na-eme ka ihe na-eme ka ahụ sie ike na ngwaahịa dị ka sauces, uwe, na ofe. Ọ nwere ike melite udidi na ọnụ nke ngwaahịa ndị a, ma kwalite nkwụsi ike ha ka oge na-aga. A pụkwara iji HEC mee ka emulsions guzosie ike, dị ka Mayonezi, site na igbochi nkewa nke mmanụ na mmiri mmiri.

N'ime ụlọ ọrụ ịchọ mma, a na-eji HEC n'ọtụtụ ngwaahịa nlekọta onwe ya, gụnyere shampoos, conditioners, lotions, na creams. HEC nwere ike imeziwanye ọdịdị na nkwụsi ike nke ngwaahịa ndị a, mee ka ihe ndị na-eme ka mmiri dịkwuo mma, na-enye mmetụta dị nro, velvety. Ọ nwekwara ike ịkwado emulsions na nhazi ihe ịchọ mma ma nyere aka gbochie nkewa nke mmanụ na mmiri mmiri.

N'ime ụlọ ọrụ na-emepụta ọgwụ, a na-eji HEC dị ka ihe nkedo na nhazi mbadamba iji hụ na ihe mbadamba nkume na-anọgide na-ejikọta ọnụ. Ọ na-eji dị ka a thickener maka Topical formulations, ebe o nwere ike welie viscosity na kwụsie ike nke ude na ointments. Tụkwasị na nke a, a na-eji HEC dị ka onye na-ahapụ ya na usoro nnyefe ọgwụ, ebe ọ nwere ike ịchịkwa ọnụego nke a na-ewepụta ọgwụ n'ime ahụ.

HEC nwere ọtụtụ ihe pụrụ iche nke na-eme ka ọ bụrụ polymer bara uru na ngwa dị iche iche. Ụfọdụ n'ime akụrụngwa ndị a gụnyere:

Mmiri-soluble: HEC dị oke mmiri na-agbaze, nke na-eme ka ọ dị mfe itinye n'ime usoro mmiri.

Ndị na-adịghị egbu egbu na biocacompatible: A na-ewere HEC ka ọ bụrụ ihe nchekwa na ihe dị ndụ, nke na-eme ka ọ baa uru na ngwa ọgwụ na ịchọ mma.

Na-agbanwe agbanwe: HEC bụ polymer na-agbanwe agbanwe nke ukwuu nke nwere ike iji mee ihe n'ọtụtụ ngwa n'ihi ike ya ịmepụta gels na gbanwee na ogo dị iche iche nke ngbanwe na ihe dị arọ.

N'ikpeazụ, hydroxyethyl cellulose bụ polymer soluble mmiri nke sitere na cellulose site na mgbakwunye nke otu hydroxyethyl.