Ụlọ ọrụ cellulose ethers na-ezo aka n'otu ụdị ihe dị iche iche sitere na cellulose, polymer na-emekarị na mgbidi cell osisi.A na-eji ethers cellulose eme ihe n'ọtụtụ ebe n'ime ụlọ ọrụ dị iche iche n'ihi ihe ha pụrụ iche, gụnyere ịgba, njide, nkwụsi ike, imepụta ihe nkiri na ikike ijide mmiri.
1. Okwu mmalite nke cellulose ether:
Cellulose ethers bụ mpụta nke cellulose, polysaccharide nke mejupụtara nkeji glucose ugboro ugboro jikọtara ya na β(1→4) glycosidic bonds.A na-emepụta ether cellulose nke ụlọ ọrụ site na mmeghachi omume kemịkalụ na-agbanwe otu hydroxyl nke mkpụrụ ndụ cellulose.Mgbanwe ndị a na-emekarị gụnyere etherification, esterification, na hydroxyalkylation, na-ebute ụdị cellulose dị iche iche nwere ihe dị iche iche.
2. Njirimara nke cellulose ether:
Mmiri Solubility: Ọtụtụ cellulose ethers bụ mmiri soluble na-etolite viscous ngwọta ma ọ bụ gels mgbe hydrated.
Ikike ike: Cellulose ethers na-egosipụta ihe ndị na-eme ka ọ dị mma na ngwọta mmiri, na-eme ka ha bụrụ ihe mgbakwunye bara uru n'ọtụtụ ngwa gụnyere mkpuchi, nrapado na ngwaahịa nlekọta onwe onye.
Nhazi ihe nkiri: Ụfọdụ cellulose ethers nwere ike ịmepụta ihe nkiri doro anya na nke na-agbanwe agbanwe, na-eme ka ha dị mma maka ngwa dịka mkpuchi, ihe nkwakọ ngwaahịa na ọgwụ.
Nkwụsi ike: Cellulose ethers na-arụ ọrụ dị ka stabilizers na emulsifiers n'ụdị dị iche iche, na-eme ka nkwụsi ike ngwaahịa na ndụ nchekwa.
Ọrụ dị n'elu: Ụfọdụ cellulose ethers nwere ihe ndị na-arụ ọrụ n'elu ma enwere ike iji ya mee ihe dị ka ndị na-ekesa n'ụdị ncha na usoro nkwusioru.
Nkwụsi ike nke kemịkalụ: Cellulose ethers na-egosipụta nkwụsi ike kemịkalụ n'okpuru ọnọdụ pH dịgasị iche iche, ọnọdụ okpomọkụ na ọnọdụ ọkụ.
3. Usoro mmepụta:
A na-arụpụtakarị ethers cellulose ụlọ ọrụ site na mmeghachi omume kemịkalụ na-achịkwa nke gụnyere cellulose dị ka ihe mmalite.Usoro ndị a na-ahụkarị gụnyere:
Etherification: Nke a na-agụnye imeghachi cellulose na onye na-emepụta ihe, dị ka alkyl halide ma ọ bụ alkylene oxide, iji webata otu ether (-OR) na ọkpụkpụ azụ cellulose.Nhọrọ nke onye na-ahụ maka etherifying na ọnọdụ mmeghachi omume na-ekpebi njirimara nke ether cellulose na-akpata.
Esterification: Na usoro a, cellulose na-eji organic acids ma ọ bụ anhydrides esterified iji mepụta cellulose esters.Mgbanwe a na-enye cellulose ethers dị iche iche Njirimara, dị ka ụba solubility na organic solvents.
Hydroxyalkylation: E nwekwara ike imepụta cellulose ethers site na imeghachi cellulose na alkylene oxides na alkali metal hydroxides.Usoro a na-ewebata ìgwè hydroxyalkyl n'ime ọkpụkpụ azụ cellulose, si otú ahụ na-eme ka mmiri dị nro na ihe ndị ọzọ a chọrọ.
4. Ụdị cellulose ethers:
E nwere ọtụtụ ụdị cellulose ethers, nke ọ bụla nwere ihe pụrụ iche na ngwa:
Methylcellulose (MC): MC bụ mmiri soluble na ọtụtụ ebe a na-eji dị ka thickener, nrapado, na ihe nkiri na-emepụta ihe dị iche iche ọrụ gụnyere ewu, ọgwụ, na nri.
Hydroxyethylcellulose (HEC): A na-eji HEC kpọrọ ihe maka ihe na-eme ka ọ sie ike na nke na-ejide mmiri, na-eme ka ọ bụrụ isi ihe dị na agba latex, ihe ịchọ mma, na ngwaahịa nlekọta onwe onye.
Hydroxypropyl methylcellulose (HPMC): HPMC na-ejikọta ihe onwunwe nke MC na HEC na njigide mmiri dị elu, nke siri ike na ike ịmepụta ihe nkiri.Enwere ike iji ya na ụlọ ọrụ ọgwụ, ihe owuwu na ụlọ ọrụ nri.
Carboxymethylcellulose (CMC): CMC bụ ihe nrụpụta cellulose na-agbaze mmiri nke a na-ejikarị dị ka thickener, stabilizer, na rheology modifier na nri, ọgwụ na ngwa ụlọ ọrụ.
Ethylcellulose (EC): EC bụ ihe a na-adịghị ahụkebe na mmiri mana ọ na-agbaze na ihe ndị na-edozi ahụ, na-eme ka ọ dị mma maka ngwa dị ka mkpuchi, nrapado, na usoro mmepụta ọgwụ na-achịkwa.
5. Ngwa nke cellulose ether mmepụta ihe:
A na-eji ethers cellulose mee ihe n'ọtụtụ ụlọ ọrụ na ngwa, gụnyere:
Ihe owuwu: N'ime ihe owuwu dị ka ngwa agha, plasta na adhesives tile, a na-eji cellulose ethers mee ihe dị ka ihe na-ejigide mmiri iji meziwanye arụmọrụ, nrapado na nkwụsi ike.
Ọgwụ: A na-eji ethers cellulose mee ihe dị ka ndị na-ekekọta, na-agbasasị na ndị na-emepụta ihe nkiri na mbadamba mbadamba, yana dị ka viscosity modifiers n'ụdị usoro ọgwụgwọ mmiri dị ka sirop na nkwusioru.
Nri na ihe ọṅụṅụ: N'ụlọ ọrụ nri, cellulose ethers na-arụ ọrụ dị ka ndị na-agba agba, ihe nkwụnye na emulsifiers na ngwaahịa ndị dị ka sauces, uwe, ice cream na ihe ọṅụṅụ.
Ngwaahịa nlekọta onwe onye: Cellulose ethers bụ ihe ndị a na-ahụkarị na ihe ịchọ mma, ụlọ mposi na ngwaahịa nlekọta onwe onye ebe ha na-enye mmetụta dị nro, gelling na nkwụsi ike na nhazi dị ka ude, lotions na shampoos.
Agba na mkpuchi: Na agba, mkpuchi na adhesives, cellulose ethers na-eme dị ka rheology modifiers, mma eruba, sag iguzogide na adhesion na mkpụrụ.
Mmanụ na gas: N'ime mmiri na-egwupụta mmiri na mmiri na-agbaji hydraulic, a na-eji cellulose ethers dị ka viscosifiers na ndị na-ahụ maka nkwụsị mmiri na-ekpo ọkụ iji kwalite usoro ịkụ ala na mmepụta ihe.
Akpụkpọ anụ: A na-eji ethers cellulose mee ihe n'ụdị slurries na-ebi akwụkwọ textile na slurry formulations iji meziwanye nbipụta doro anya, mkpụrụ agba na ike akwa.
Ịme akwụkwọ: N'ime mkpuchi akwụkwọ na ọgwụgwọ elu, cellulose ethers na-eme ka mbipụta, njigide ink na ịdị nro dị elu, si otú ahụ na-eme ka ịdịmma mbipụta na ọsọ ọsọ.
6. Ihe gbasara gburugburu ebe obibi:
Ọ bụ ezie na ethers cellulose sitere na akụ ndị a na-emegharịgharị ma na-ewerekarị na ọ bụ ihe na-emebi emebi, mmepụta na ojiji ha chọrọ nlebara anya gburugburu ebe obibi:
Ngwọta na-adịgide adịgide: Cellulose ethers na-esite na pulp osisi ma ọ bụ akwa owu, anyị na-agba mbọ hụ na omume oke ọhịa na-arụ ọrụ na ibelata mmetụta gburugburu ebe obibi.
Oriri ike: Usoro nrụpụta nke cellulose ethers nwere ike ịchọ ntinye ike dị ukwuu, ọkachasị n'oge usoro mgbanwe kemịkalụ.
Ijikwa mkpofu: Mgbalị ibelata mmepụta ihe na-ebulikwa ụzọ maka imegharị ma ọ bụ ikpofu ngwa ahịa na ihe eji emefu nwere ethers cellulose.
Biodegradability: Ọ bụ ezie na ethers cellulose bụ ihe na-emebi emebi n'okpuru ọnọdụ ụfọdụ, ọnụego mmebi ahụ nwere ike ịdịgasị iche dabere na ihe ndị dị ka nhazi kemịkalụ, ọnọdụ gburugburu ebe obibi, na ọrụ microbial.
7. Echiche Ọdịnihu:
Ka ụlọ ọrụ na-aga n'ihu na-ebute nkwado nkwado na nlekọta gburugburu ebe obibi, enwere mmasị na-eto eto maka ịmepụta cellulose ethers nwere àgwà gburugburu ebe obibi ka mma.Mgbalị nyocha na-elekwasị anya n'ịchọgharị akụrụngwa ndị ọzọ, usoro mmepụta akwụkwọ ndụ akwụkwọ ndụ na ngwa ọhụrụ nke cellulose ethers na mpaghara dịka biomedicine, ume ọhụrụ na ihe ndị dị elu.
Ụlọ ọrụ cellulose ethers na-arụ ọrụ dị mkpa n'ọtụtụ ụlọ ọrụ n'ihi ihe onwunwe ha pụrụ iche na ọtụtụ ngwa ngwa.Site na ihe owuwu ụlọ gaa na ọgwụ na ngwaahịa nlekọta onwe onye, cellulose ethers na-enyere aka melite arụmọrụ ngwaahịa, ịdị mma na nkwado.Ọ bụ ezie na ihe ịma aka ndị dị ka oriri ike na njikwa mkpofu ka dị, nchọpụta na-aga n'ihu na ihe ọhụrụ na-achọ imezi ọnọdụ gburugburu ebe obibi na ịgbasa ojiji nke cellulose ethers na akụ na ụba ụwa na-agbanwe ngwa ngwa.
Oge nzipu: Feb-18-2024