Kọwaa:
Ihe mejupụtara nri dị iche ichecellulose ethers
Ngalaba teknụzụ:
Ihe mepụtara a metụtara ihe mejupụtara nri nwere cellulose ethers.
Usoro ndabere:
A marala kemgbe na ọ na-etinye cellulose ethers n'ime ihe ndị e ji eme nri, karịsịa ihe ndị e ji eme nri, iji melite ihe dị iche iche dịka nkwụsi ike na/ma ọ bụ udidi oyi kpọnwụrụ akpọnwụ, ma ọ bụ iji melite ike n'oge mmepụta, ma ọ bụ site n'iji igwe eme ihe ma ọ bụ ghere eghe. Ngwa ikike ikike nke ndị Britain GB 2 444 020 na-ekpughe ihe ndị dị otú ahụ e ji eme nri nke nwere cellulose ether nonionic dị ka methylcellulose, hydroxypropyl cellulose, ma ọ bụ hydroxypropyl methylcellulose. Methylcellulose na hydroxypropyl methylcellulose nwere "ihe ndị a na-agbanwe agbanwe na thermos". A kọwara ya kpọmkwem na mgbe a na-ekpo ọkụ mmiri mmiri nke methylcellulose ma ọ bụ hydroxypropyl methylcellulose, otu hydrophobic methoxy dị na molekul ahụ na-enweta mmiri mmiri, ọ na-aghọkwa gel mmiri mmiri. N'aka nke ọzọ, mgbe gel ahụ jụrụ oyi, a na-eme ka otu hydrophobic methoxy dịghachi ndụ, nke mere gel ahụ ji laghachi na mmiri mmiri mbụ.
Akwụkwọ ikike European EP I 171 471 na-ekpughe methylcellulose nke bara uru nke ukwuu na ihe ndị e ji esi nri siri ike dịka akwụkwọ nri siri ike, anụ, na soybean patties n'ihi ike gel ya dị elu. methylcellulose na-enye ike na njikọ ka mma na ihe ndị e ji esi nri siri ike, si otú a na-enye ndị ahịa na-eri ihe ndị e ji esi nri emechara nri dị mma. Mgbe a gbazere ya na mmiri oyi (dịka ọmụmaatụ, 5°C ma ọ bụ ala) tupu ma ọ bụ mgbe ọ gwakọtara ya na ihe ndị ọzọ dị na ihe ndị e ji esi nri, soy methylcellulose na-erute ikike ya zuru oke iji nye ihe ndị e ji esi nri siri ike na ike njikọ.
Agbanyeghị, n'ọnọdụ ụfọdụ, iji mmiri oyi anaghị adị mfe maka onye na-emepụta ihe mejupụtara nri ahụ. N'ihi ya, ọ ga-adị mma inye cellulose ethers nke na-enye ihe mejupụtara nri siri ike nke ọma na njikọ ọbụlagodi mgbe cellulose ethers gbazere na mmiri nwere ihe dị ka okpomọkụ ụlọ.
A maara na hydroxyalkyl methylcellulose dị ka hydroxypropyl methylcellulose (nke a makwaara dị ka ọ bara uru na ihe mejupụtara nri) nwere modulus nchekwa dị ala ma e jiri ya tụnyere methylcellulose. Hydroxyalkyl methylcellulose ndị na-egosi modulus nchekwa dị ala anaghị emepụta gels siri ike. A chọrọ nnukwu njupụta maka ọbụna gels ndị 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 nwere obere modulus nchekwa) dị na ihe mejupụtara nri siri ike, ike na njikọ ha adịghị elu nke ọma maka ojiji ụfọdụ.
Ọ bụ ihe e ji mepụta ihe a ugbu a iji nye hydroxyalkyl methylcellulose, karịsịa hydroxypropyl methylcellulose, nke a pụrụ iji tụnyere hydroxyalkyl methylcellulose a ma ama, dị ka hydroxypropyl methylcellulose. N'ụzọ dị iche, a na-enye ihe ndị mejupụtara nri siri ike ka mma iji sie ike ma ọ bụ jikọta ọnụ.
Ihe a na-ahọrọ nke ọma n'ihe mepụtara ugbu a bụ inye hydroxyalkyl methylcellulose, ọkachasị hydroxypropyl methylcellulose, nke na-enye ihe mejupụtara nri siri ike na ezigbo ike na/ma ọ bụ njikọta ọbụlagodi mgbe hydroxyalkyl methylcellulose. Otu ihe ahụ bụ eziokwu mgbe agbazere na mmiri nwere ihe dị ka okpomọkụ ụlọ.
Ihe ijuanya bụ na achọpụtala nahydroxyalkyl methylcellulose, karịsịa hydroxypropyl methylcellulose, enwere ike iji ya mee ihe n'ịkwadebe nri siri ike ma e jiri ya tụnyere ihe mejupụtara nri siri ike, ihe mejupụtara nri siri ike a maara nwere ike na/ma ọ bụ njikọ dị elu.
Ihe ijuanya bụkwa na achọpụtala na ụfọdụ hydroxyalkyl methylcelluloses, ọkachasị hydroxypropyl methylcellulose, adịghị mkpa ka a gbazee ha na mmiri oyi iji nye nri siri ike nke nwere ezigbo ike na/ma ọ bụ njikọta.
Oge ozi: Eprel-28-2024