Cellulosebụ akụkụ bụ isi nke mgbidi cell osisi, ma bụrụ nke a na-ekesa na polysaccharide kachasị ukwuu na okike, na-aza ihe karịrị 50% nke ọdịnaya carbon na alaeze osisi. N'ime ha, ọdịnaya cellulose nke owu dị nso 100%, nke bụ isi iyi cellulose dị ọcha. Na osisi n'ozuzu, cellulose bụ 40-50%, na e nwere 10-30% hemicellulose na 20-30% lignin. Cellulose ether bụ okwu n'ozuzu maka ụdị dị iche iche nke enwetara site na cellulose eke dị ka akụrụngwa site na etherification. Ọ bụ ngwaahịa e guzobere mgbe ìgwè hydroxyl na cellulose macromolecules na-anọchi akụkụ ma ọ bụ kpamkpam site na otu ether. Enwere njikọ intra-chain na inter-chain hydrogen na cellulose macromolecules, nke siri ike igbari na mmiri na ihe fọrọ nke nta ka ọ bụrụ ihe niile na-edozi ahụ, ma mgbe etherification gasịrị, mmeghe nke otu ether nwere ike imeziwanye hydrophilicity ma na-abawanye solubility na mmiri na organic solvents. Njirimara solubility.
Cellulose ether nwere aha nke "ụlọ ọrụ monosodium glutamate". Ọ nwere ihe ndị magburu onwe ya dị ka ihe ngwọta ngwọta, ezigbo mmiri solubility, nkwusioru ma ọ bụ nkwụsi ike latex, ịmepụta ihe nkiri, njide mmiri, na nchikota. Ọ bụkwa ihe na-adịghị egbu egbu na enweghị ụtọ, a na-ejikwa ya na ihe owuwu ụlọ, ọgwụ, nri, textiles, chemicals kwa ụbọchị, nchọpụta mmanụ ala, Ngwuputa ihe, imepụta akwụkwọ, polymerization, ikuku ikuku na ọtụtụ ubi ndị ọzọ. Cellulose ether nwere uru nke ngwa sara mbara, obere ihe eji eme ihe, mmetụta mgbanwe dị mma na ịdị mma gburugburu ebe obibi. Ọ nwere ike imeziwanye ma kwalite arụmọrụ ngwaahịa n'ọhịa nke mgbakwunye ya, nke na-enyere aka melite arụmọrụ iji akụrụngwa yana uru ngwaahịa agbakwunyere. Ihe mgbakwunye enyi na gburugburu ebe obibi dị mkpa na mpaghara dị iche iche.
Dị ka ionization nke cellulose ether si kwuo, ụdị ihe mgbakwunye na ọdịiche dị na solubility, cellulose ether nwere ike kewaa n'ime ụdị dị iche iche. Dị ka ụdị dị iche iche nke nnọchi anya, cellulose ethers nwere ike kewaa n'ime otu ethers na ngwakọta ethers. Dị ka solubility, cellulose ether nwere ike kewaa n'ime mmiri-soluble na mmiri-adịghị ike ngwaahịa. Dị ka ionization si kwuo, enwere ike kewaa ya na ngwaahịa ionic, ndị na-abụghị ionic na ngwakọta. N'ime ethers cellulose na-agbaze mmiri, ethers cellulose na-abụghị ionic dị ka HPMC nwere nguzogide okpomọkụ dị mma na nguzogide nnu karịa ionic cellulose ethers (CMC).
Kedu ka cellulose ether si kwalite na ụlọ ọrụ ahụ?
A na-eme cellulose ether site na owu a nụchara anụcha site na alkalization, etherification na usoro ndị ọzọ. Usoro mmepụta nke ọkwa ọgwụ HPMC na ọkwa nri HPMC bụ otu ihe ahụ. E jiri ya tụnyere ụlọ ihe-ọkwa cellulose ether, mmepụta usoro nke pharmaceutical-ọkwa HPMC na nri-ọkwa HPMC chọrọ ogbo etherification, nke dị mgbagwoju anya, siri ike ịchịkwa mmepụta usoro, na-achọ elu ịdị ọcha nke ngwá na mmepụta gburugburu ebe obibi.
Dị ka data nyere China Cellulose Industry Association, ngụkọta mmepụta ike nke na-abụghị ionic cellulose ether emepụta na nnukwu ụlọ mmepụta ike, dị ka Hercules Temple, Shandong Heda, wdg, karịrị 50% nke mba ngụkọta mmepụta ike. Enwere ọtụtụ ndị ọzọ na-emepụta obere cellulose ether na-abụghị ionic nke nwere ikike imepụta ihe na-erughị tọn 4,000. Ewezuga ụlọ ọrụ ole na ole, ọtụtụ n'ime ha na-emepụta ihe eji arụ ụlọ nkịtị bụ cellulose ethers, nke nwere ikike nrụpụta ihe dị ka tọn 100,000 kwa afọ. N'ihi enweghị ike ego, ọtụtụ obere ụlọ ọrụ na-emezughị ụkpụrụ na ntinye ego nchekwa gburugburu ebe obibi na ọgwụgwọ mmiri na ikpochapụ gas iji belata ụgwọ ọrụ mmepụta. Ka mba ahụ na ọha mmadụ niile na-etinyekwu uche na nchekwa gburugburu ebe obibi, ụlọ ọrụ ndị ahụ na-arụ ọrụ na-enweghị ike imezu ihe ndị a chọrọ maka nchebe gburugburu ebe obibi ga-eji nwayọọ nwayọọ mechie ma ọ bụ belata mmepụta. N'oge ahụ, ntinye nke ụlọ ọrụ mmepụta cellulose ether nke mba m ga-abawanye ụba.
Atumatu nchekwa gburugburu ebe obibi na-esiwanye ike, a na-etinyekwa ihe ndị siri ike maka teknụzụ nchekwa gburugburu ebe obibi na itinye ego na usoro mmepụta nkecellulose ether. Usoro nchekwa gburugburu ebe obibi dị elu na-abawanye ọnụ ahịa mmepụta nke ụlọ ọrụ ma na-etolitekwa oke maka nchekwa gburugburu ebe obibi. Ụlọ ọrụ ndị na-enweghị ike imezu ihe nchebe gburugburu ebe obibi ga-abụ na a ga-eji nwayọọ nwayọọ mechie ma ọ bụ belata mmepụta n'ihi ọdịda irute ụkpụrụ nchedo gburugburu ebe obibi. Dabere na atụmanya nke ụlọ ọrụ ahụ, ụlọ ọrụ ndị na-eji nwayọọ nwayọọ belata mmepụta ma kwụsị mmepụta n'ihi ihe nchebe gburugburu ebe obibi nwere ike ịgụnye mkpokọta ihe dị ka tọn 30,000 kwa afọ nke ọkwa cellulose ether nkịtị na-ewu ụlọ, nke na-eme ka mgbasawanye nke ụlọ ọrụ bara uru.
Dabere na ether cellulose, ọ na-aga n'ihu na-agbatị na ngwaahịa dị elu na nke bara uru
Oge nzipu: Eprel-25-2024