Cellulose ether

Cellulose etherbụ ụdị mkpụrụ ndụ cellulose nke a na-emezi na kemịkalụ iji kwalite ihe onwunwe ya ma mee ka ọ dịkwuo mma maka ọtụtụ ngwa ọrụ mmepụta ihe. A na-enweta ya site na cellulose, nke bụ polymer organic kachasị dị na mgbidi cell nke osisi. A na-emepụta cellulose ether site n'ịgwọ cellulose na ndị na-emepụta kemịkalụ iji webata otu ndị na-anọchi anya na cellulose molecule, na-ebute nkwalite solubility, nkwụsi ike, na ịrụ ọrụ. Nke a bụ ụfọdụ isi ihe gbasara cellulose ether:

1. Ọdịdị kemịkalụ:

• Cellulose ether na-ejigide usoro cellulose bụ isi, nke mejupụtara nkeji glucose ugboro ugboro jikọtara ọnụ site na β(1→4) njikọ glycosidic.
• Mgbanwe kemịkalụ na-ewebata otu ether, dị ka methyl, ethyl, hydroxyethyl, hydroxypropyl, carboxymethyl, na ndị ọzọ, na otu hydroxyl (-OH) nke molekul cellulose.

2. Ngwongwo:

• Solubility: Cellulose ethers nwere ike ịsacha ma ọ bụ gbasaa na mmiri, dabere n'ụdị na ogo nke nnọchi. Nke a solubility na-eme ka ha dị mma maka iji na aqueous formulations.
• Rheology: Cellulose ethers na-arụ ọrụ dị ka ndị na-emepụta ihe na-arụ ọrụ nke ọma, ndị na-emezigharị rheology, na ndị na-eme ka ọ dị mma na nhazi mmiri mmiri, na-enye njikwa viscosity ma melite nkwụsi ike na arụmọrụ ngwaahịa.
• Ịme Ihe nkiri: Ụfọdụ cellulose ethers nwere ihe na-emepụta ihe nkiri, na-enye ha ohere ịmepụta ihe nkiri dị gịrịgịrị ma na-agbanwe agbanwe mgbe akpọnwụwo. Nke a na-eme ka ha baa uru na mkpuchi, adhesives, na ngwa ndị ọzọ.
• Nkwụsi ike: Cellulose ethers na-egosipụta nkwụsi ike n'ọtụtụ pH na ọnọdụ okpomọkụ, na-eme ka ha dị mma maka iji mee ihe n'ụdị dị iche iche.

3. Ụdị cellulose ether:

• Methylcellulose (MC)
• Hydroxypropyl Methylcellulose (HPMC)
• Hydroxyethyl cellulose (HEC)
• Carboxymethyl cellulose (CMC)
• Ethyl Hydroxyethyl Cellulose (EHEC)
• Hydroxypropyl cellulose (HPC)
• Hydroxyethyl Methylcellulose (HEMC)
• Sodium Carboxymethyl Cellulose (NaCMC)

4. Ngwa:

• Ihe owuwu: A na-eji ya dị ka ndị na-ebu ibu, ndị na-ejigide mmiri, na ndị na-emegharị rheology na ngwaahịa ndị dabeere na ciment, agba, mkpuchi, na adhesives.
• Nlekọta onwe onye na ihe ịchọ mma: A na-arụrụ ya ọrụ dị ka ndị na-ebu ibu, ndị na-eme ka ahụ sie ike, ndị na-eme ihe nkiri, na emulsifiers na lotions, creams, shampoos, na ngwaahịa nlekọta onwe onye ndị ọzọ.
• Ọgwụ: A na-eji ya dị ka ndị na-ekekọta, ndị na-ekesa, ndị na-ahapụ ndị na-achịkwa, na viscosity modifiers na mbadamba mbadamba, nkwusioru, mmanụ mmanụ, na gels.
• Nri na ihe ọ beụ beụ: A na-eji ya dị ka ndị na-agba agba, ihe nkwụsi ike, emulsifiers, na ndị na-agbanwe ụdị ihe n'ime ngwaahịa nri dị ka sauces, mgbakwasa, ngwaahịa mmiri ara ehi, na ihe ọṅụṅụ.

5. Nkwado:

• A na-enweta ethers cellulose site na isi mmalite sitere na ihe ọkụkụ, na-eme ka ha bụrụ ihe ndị ọzọ dị mma na gburugburu ebe obibi na polymers sịntetik.
• Ha na-emebi emebi, ha anaghị etinye aka na mmetọ gburugburu ebe obibi.

Mmechi:

Cellulose ether bụ polymer na-adịgide adịgide yana ọtụtụ ngwa dị na ụlọ ọrụ dịka ihe owuwu, nlekọta onwe onye, ​​ọgwụ na nri. Ngwongwo ya na ọrụ ya pụrụ iche na-eme ka ọ bụrụ ihe dị mkpa n'ọtụtụ nhazi, na-enye aka na arụmọrụ ngwaahịa, nkwụsi ike, na ịdị mma. Dị ka ụlọ ọrụ na-aga n'ihu na-ebute nkwado nkwado na ngwọta enyi na enyi, a na-atụ anya ka a na-achọ cellulose ethers na-eto eto, na-ebugharị ihe ọhụrụ na mmepe na mpaghara a.