Mkpụrụ osisi ether bụ polymer na-eme site na sellilose site na ngbanwe kemịkal. Celligul eather bụ ihe na-atọ ụtọ nke sellose. Mmepụta nke cellosuse eather dị iche na polymers sịntetik. Ihe kachasị mkpa bụ cellulose, polymer polymer. N'ihi ihe owuwu sellose eke, ihe cellulose n'onwe ya enweghị ikike imeghachi omume ndị ọrụ Ileration. Agbanyeghị, mgbe ọgwụgwọ nke onye na-ahụ maka ọzịza, a na-ejikọ hydrogen n'etiti ụdọ mmiri na agbụ nke hydroxyl na-emegharị alkali sellulose. Nweta celllose ether.
Na njikere mize, mgbakwunye ego nke cellulose ether dị ala, mana ọ nwere ike ime ka arụmọrụ nke ngwa agha mmiri, ọ bụ isi ihe na-emetụta arụmọrụ nke ngwa agha. Ezi uche nke usoro cellugul nke ụdị dị iche iche, ụdị ọhụụ, ogo dị iche iche, ogo dị iche iche ga-enwe mmetụta dị mma na arụmọrụ nke ngwa agha akọrọ. Ugbu a, ọtụtụ masonry na ngwa ngwa na-agba ngwa ngwa nwere arụmọrụ mmiri mmiri, na mmiri slurry ga-ekewapụ mgbe ọ gafechara.
Njikwa mmiri bụ arụmọrụ dị mkpa nke methyl cellulose eather, ọ bụkwa arụmọrụ nke ndị na-emepụta ngwa ngwa na ndịda na ndịda na ndịda na-adị elu, toa ntị na mbara igwe. Ihe ndị na-emetụta mmetụta mmiri nke ngwakọta akọrọ gụnyere ego nke Mc gbakwunyere, viecosis nke MC, ọdịdị nke irighiri ihe na ọnọdụ okpomọkụ nke ojiji.
Ngwongwo nke otutu ndi mmadu na-adabere na udi, onu ogugu na nkesa ndi nweburu. Nkewa nke eyers cellususe na-esitekwa n'ụdị ndị nnọchianya, ogo nke ether, ngụgụ na akụrụngwa metụtara ya. Dabere na ụdị nke ndị a na-ejikarị ya, a ga-ekewa ya na mover ma gwakọta ya. Ihe MC anyị na-ejikarị bụ moniher, a na-agwakọta HPMC. Methyl cellulose eather mc bụ ngwaahịa mgbe hydroxy n'otu n'otu celluse nke celloxy. Usoro nhazi ahụ bụ [Coh7o2 (Oh) 3-h (OCH3) H] X. Otutu nke Methixy Group na Cydropopyl ji dochie nke ọzọ, a na-eji hydropyyl dochie akụkụ nke ọzọ, ihe owuwu bụ [c6h7o2 (oh) 3-mn (och) m [OCH2CH (Oh)] X ethyl methyl cellulose nke Ether Hemc, ndị a bụ ụdị dị iche iche na-eji na ere n'ahịa.
N'usoro nke solubality, enwere ike ekewa ya ionic na nke na-abụghị nke ionic. Ahịhịa mkpụrụ ndụ celluble na-abụghị nke na-egbu egbu na-kachakarị nke usoro usoro abụọ nke alkyl na hydroxyalky. A na-eji cmc cmc na-eme ihe na-egbu egbu, mbipụta na ihicha akwa, nri na ihe nyocha mmanụ. A na-ejikarị igwe, HPMC, wdc, wdc.
Nchọpụta mmiri nke eat nke eather: Na mmepụta ihe eji eme ihe, ọkachasị nkụchi ntụ ntụ, celhulose elictive na-enweghị atụ, karịsịa na ngwa agha pụrụ iche (nke dị mkpa), ọ bụ ihe dị mkpa. Ọrụ dị mkpa nke mmiri-soluble cellulose ether na ngwa agha nwere akụkụ atọ:
1. Ezigbo ikike nnabata
2. Mmetụta na nguzobe na ngwa agha na Thixotropy
3. Mmekọrịta na ciment.
Igwe eji egbochi mmiri nke sel na-adabere na mmiri mmiri dị na mbara ihu, ihe ngwa agha, ọkpụrụkpụ nke ngwa agha, na oge nrụpụta nke ihe eji eme ya. Njide mmiri nke celhulose ether n'onwe ya na-esite na solubality na akpịrị ịkpọasị nke sel na-efe efe. Dịka anyị niile maara, ọ bụ ezie na mkpụrụ ndụ cellular nwere ọnụ ọgụgụ dị ukwuu nke ukwuu, ọ naghị soble na mmiri, n'ihi na ihe owuwu cellulose nwere oke nke mkpu ákwá dị elu. Ikike hydration nke otu hydroxy ezughi iji kpuchie eriri hydrogen siri ike na van der Waals na-agabiga n'etiti ụmụ irighiri ihe. Ya mere, ọ bụ naanị inyocha ma ọ naghị agbari na mmiri. Mgbe a na-ewebata dochie ya n'ime akwara akwara, ọ bụghị naanị na a na-ebibi hydrogen yinye, kamakwa njikọta hydrogen hydrogen a na-emebi emebi n'ihi akara nke a na-ejikọ ọnụ. Nnukwu ihe dị ukwuu n'etiti ụmụ irighiri ihe. Ka ukwuu n'ebe dị anya. Kachasị mmetụta nke imebi agbụ hydrogen, cellulose ether na-agbanye mmiri mgbe ikuku lattice latttose na-agbasa ma ngwọta ndị na-abanye, na-akpụzi ngwọta dị elu. Mgbe ọnọdụ okpomọkụ ahụ na-awa, hydration nke polymer na-emebi emebi, na mmiri dị n'agbatakwa mmiri dị n'etiti agbụ. Mgbe mmetụta akpịrị zuru ezu, ụmụ irighiri akwara na-amalite nchịkọta, na-akpụzi gel nke netwọkụ atọ ma kechie ya.
Oge Post: Dec-06-2022