Gịnị bụ ọrụ nke nri mejupụtara cellulose ether

Kọwaa:

Ngwakọta nri gụnyerecellulose ethers

Mpaghara nka:

Ihe mepụtara ugbu a metụtara ihe mejupụtara nri nwere ethers cellulose.

Usoro ndabere:

Ọ dịla anya a mara na ọ na-etinye cellulose ethers n'ime ihe oriri, karịsịa ihe ndị a na-edozi nri, iji meziwanye ihe dị iche iche dị ka nkwụsi ike friza-thaw na/ma ọ bụ udidi, ma ọ bụ iji melite nkwụsi ike n'oge nrụpụta, na-edozi ma ọ bụ eghe. Ngwa patent nke Britain GB 2 444 020 na-ekpughere ụdị nri nri ndị mejupụtara ether nonionic cellulose dị ka methylcellulose, hydroxypropyl cellulose, ma ọ bụ hydroxypropyl methylcellulose. Methylcellulose na hydroxypropyl methylcellulose nwere "thermos reversible gelling properties". A na-akọwa kpọmkwem na mgbe ngwọta mmiri nke methylcellulose ma ọ bụ hydroxypropyl methylcellulose na-ekpo ọkụ, ìgwè hydrophobic methoxy dị na molecule na-enweta mmiri mmiri, ọ na-aghọ gel aqueous. N'aka nke ọzọ, mgbe gel na-esi na ya dị jụụ, a na-eme ka ìgwè hydrophobic methoxy dịghachi, nke gel na-alaghachi na ngwọta mmiri mbụ.

European Patent EP I 171 471 na-ekpughe methylcellulose nke bara ezigbo uru na nhazi nri siri ike dị ka akwụkwọ nri siri ike, anụ, na patties soybean n'ihi ike gel ya na-abawanye. methylcellulose na-enye nkwụsi ike na ịdị n'otu na nhazi nri siri ike, si otú a na-enye ndị na-eri nri anụ ahụ nke ọma. Mgbe agbazere na mmiri oyi (dịka ọmụmaatụ, 5 Celsius ma ọ bụ nke dị ala) tupu ma ọ bụ mgbe agwakọta ya na ihe ndị ọzọ mejupụtara nri, soy methylcellulose na-erute ikike ya iji nye nri siri ike na nkwụsi ike na ịdị n'otu. ike.

Otú ọ dị, n'ọnọdụ ụfọdụ, iji mmiri oyi eme ihe adịghị mma maka onye na-emepụta ihe oriri. N'ihi ya, ọ ga-abụ ihe na-achọsi ike ịnye cellulose ethers nke na-enye ihe oriri siri ike na-esi ísì ụtọ na ịdị mma nke ọma ọbụna mgbe ethers cellulose na-agbaze na mmiri na-enwe ihe dị ka ụlọ okpomọkụ.

Hydroxyalkyl methylcellulose dị ka hydroxypropyl methylcellulose (nke a makwaara na ọ bara uru na nhazi nri) ka amara na ọ nwere modul nchekwa dị ala ma e jiri ya tụnyere methylcellulose. Hydroxyalkyl methylcelluloses na-egosipụta modul nchekwa dị ala anaghị emepụta gels siri ike. A na-achọ ihe dị elu maka ọbụna gels na-adịghị ike (Haque, A; Richardson; Morris, ER, Gidley, MJ na Caswell, DC na Carbohydrate Polymers22 (1993) p.175; na Haque, A na Morris, ER1nCarbohydrate Polymers22 (1993) p.161).

Mgbe hydroxyalkyl methylcelluloses dị ka hydroxypropyl methylcellulose (nke na-egosipụta modulus nchekwa dị ala) na-etinye n'ime ihe oriri siri ike, isi ike na njikọta ha ezughị oke maka ngwa ụfọdụ.

Ọ bụ ihe a na-emepụta ugbu a iji nye hydroxypropyl methylcellulose, karịsịa hydroxypropyl methylcellulose, nke yiri hydroxypropyl methylcellulose, dị ka hydroxypropyl methylcellulose, dị ka hydroxypropyl methylcellulose N'ụzọ dị iche, a na-enye ihe oriri siri ike na nkwụsi ike na / ma ọ bụ njikọ dị mma.

Ihe kachasị amasị nke ugbu a bụ inye hydroxypropyl methylcellulose, karịsịa hydroxypropyl methylcellulose, nke na-enye ihe oriri siri ike na ike siri ike na / ma ọ bụ njikọta ọbụna mgbe hydroxyalkyl methylcellulose bụ otu ihe ahụ mgbe agbazere na mmiri nwere ihe dị ka okpomọkụ.

N'ụzọ dị ịtụnanya, a chọpụtala nahydroxyalkyl methylcellulose, karịsịa hydroxypropyl methylcellulose, nwere ike iji mee ihe na nkwadebe nke E jiri ya tụnyere ihe oriri siri ike, ihe oriri siri ike maara nke ọma nwere ike ịdị elu na / ma ọ bụ njikọta.

N'ụzọ dị ịtụnanya, a chọpụtala na ụfọdụ hydroxypropyl methylcellulose, karịsịa hydroxypropyl methylcellulose, adịghị mkpa ka a gbazee na mmiri oyi iji nye ihe oriri siri ike na-esi ike na / ma ọ bụ nchikota.