Banyere Cellulose
Cellulose bụ polysaccharide macromolecular nke nwere glucose. Ọ dị n'ọtụtụ dị ukwuu n'osisi ndụ akwụkwọ ndụ na ihe ndị dị ndụ n'ime mmiri. Ọ bụ ihe polymer eke kachasị kesaa ma buru ibu n'okike. O nwere ezigbo biocompatibility, mmeghari ohuru na ihe ndị nwere ike imebi emebi na uru ndị ọzọ. Site na photosynthesis, osisi nwere ike imepụta ọtụtụ narị nde tọn cellulose kwa afọ.
Atụmanya Ngwa Cellulose
Cellulose ọdịnala emeela ka ojiji ya dị oke mma n'ihi ihe ndị dị na ya na kemịkalụ ya, ebe cellulose ihe polymer eke nwere ihe dị iche iche na-arụ ọrụ mgbe emechara nhazi na mgbanwe, nke nwere ike igbo mkpa dị iche iche nke ụlọ ọrụ dị iche iche. Ojiji nke ihe cellulose arụ ọrụ aghọwo ihe okike na-ewu ewu na-eme ka ihe polymer dị mma.
A na-emepụta ihe ndị sitere na cellulose site na esterification ma ọ bụ etherification nke otu hydroxyl na cellulose polymers na ihe ndị sitere na kemịkalụ. Dịka njirimara nhazi nke ngwaahịa mmeghachi omume si dị, enwere ike kewaa ihe ndị sitere na cellulose n'ime ụdị atọ: cellulose ethers, cellulose esters, na cellulose ether esters.
1. Cellulose ether
Cellulose ether bụ okwu izugbe maka usoro ihe ndị sitere na cellulose nke mmeghachi omume nke alkali cellulose na ihe na-eme ka etherifying dị n'okpuru ọnọdụ ụfọdụ mepụtara. Cellulose ether bụ ụdị ihe ndị sitere na cellulose nke nwere ụdị dị iche iche, ubi ngwa sara mbara, nnukwu olu mmepụta na uru nnyocha dị elu. Ojiji ya gụnyere ọtụtụ ubi dịka ụlọ ọrụ mmepụta ihe, ọrụ ugbo, ụlọ ọrụ kemịkalụ kwa ụbọchị, nchekwa gburugburu ebe obibi, ụgbọelu na nchekwa mba.
Ethers cellulose nke a na-eji eme ihe n'ahịa bụ: methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, cyanoethyl cellulose, hydroxypropyl cellulose na hydroxypropyl methylcellulose Cellulose wdg.
2. Cellulose ester
A na-ejikarị cellulose esters eme ihe n'ọhịa nchekwa mba, ụlọ ọrụ kemịkalụ, bayoloji, ọgwụ, owuwu na ọbụna ụgbọelu.
Ester cellulose nke a na-eji eme ihe n'ahịa bụ: cellulose nitrate, cellulose acetate, cellulose acetate butyrate na cellulose xanthate.
3. Cellulose ether ester
Cellulose ether ester bụ ngwakọta nke ester-ether.
Ubi ngwa:
1. Ngalaba ọgwụ
A na-ejikarị ihe ndị sitere na cellulose ether na ester eme ihe n'ọgwụ maka ịcha, ihe na-enye aka, ntọhapụ na-adịgide adịgide, mwepụta a na-achịkwa, imepụta ihe nkiri na ebumnuche ndị ọzọ.
2. Ubi mkpuchi
Cellulose esters na-arụ ọrụ dị oke mkpa n'itinye mkpuchi.Ndị na-emepụta sel celluloseA na-eji ya eme ihe na ihe ndị e ji ejikọta ihe, resin ndị a gbanwere agbanwe ma ọ bụ ihe ndị e ji ihe nkiri mee iji nye ihe mkpuchi nwere ọtụtụ ihe onwunwe dị mma.
3. Ngalaba teknụzụ akpụkpọ ahụ
Ihe ndị e ji emepụta cellulose na ihe ndị e si na ya pụta nwere uru dị na mmepụta buru ibu, arụmọrụ kwụsiri ike, na imegharị ihe. Site na nhazi onwe nke oyi akwa site na oyi akwa, usoro ntụgharị nkebi, teknụzụ ntụgharị elektrọs na ụzọ ndị ọzọ, enwere ike ịkwadebe ihe ndị e ji emepụta membrane nwere arụmọrụ nkewa dị mma. N'ọhịa nke teknụzụ membrane, a na-ejikarị ya eme ihe nke ukwuu.
4. Ngalaba ihe owuwu
Cellulose ethers nwere ike gel dị elu nke a na-agbanwe agbanwe n'oge okpomọkụ, ya mere ha bara uru dị ka ihe mgbakwunye na ihe owuwu, dịka ihe mgbakwunye taịlị dabere na simenti.
5. Ụgbọelu, ụgbọala ike ọhụrụ na ngwaọrụ eletrọniki dị elu
Enwere ike iji ihe optoelectronic arụ ọrụ dabere na cellulose mee ihe na mbara igwe, ụgbọ ala ike ọhụrụ na ngwaọrụ eletrọniki dị elu.
Oge ozi: Eprel-25-2024