Jwalo ka thepa e sebediswang haholo diindastering tse fapaneng, phofo ya ether ya cellulose e na le kgomarelo e ntle, ho teteana le ho boloka metsi. E sebediswa haholo kahong, meriana, ditlolong, dijong le mafapheng a mang a mangata. Leha ho le jwalo, ho fumana tshebetso e ntle ka ho fetisisa ho tswa ho phofo ya ether ya cellulose, tlhokomelo e lokela ho lefshwa tshebetsong ya yona ya ho qhala. Mona ke dintlha tse ding tsa bohlokwa tseo o lokelang ho di nahana ha o qhala phofo ya ether ya cellulose:
1. Khetha tharollo e nepahetseng
Phofo ea ether ea cellulose e qhibiliha haholo metsing, e etsa tharollo e bonaletsang, e tiileng. Leha ho le joalo, mefuta e fapaneng ea li-ether tsa cellulose e na le ho qhibiliha ho fapaneng metsing, 'me ho qhibiliha ha tsona ho tla angoa ke lintlha tse kang mocheso le pH. Ka hona, ho khetha tharollo e nepahetseng bakeng sa liphetho tse ntle ho bohlokoa.
Mohlala, haeba phofo ea ether ea cellulose e hloka ho qhibilihisoa tikolohong e nang le mocheso o tlase kapa tsamaisong e nang le pH e tlase, hydroxypropylmethylcellulose (HPMC) kapa methylcellulose (MC) e ka ba betere ho feta ethylcellulose (EC) kapa carboxylate Better Choice Methylcellulose (CMC). Ho bohlokoa ho khetha solvent e loketseng ho latela litlhoko tsa ts'ebeliso le litšobotsi tsa solvent.
2. Taolo ea mocheso
Mocheso ke ntlha e 'ngoe ea bohlokoa e amang ho qhibiliha ha phofo ea ether ea cellulose. Ho qhibiliha ha li-ether tsa cellulose hoa eketseha ha mocheso, empa le sekhahla sa ho qhibiliha sea eketseha, e leng se ka lebisang ho phofo e kopantsoeng kapa e kopantsoeng. Ka hona, mocheso o tlameha ho laoloa ka hloko nakong ea ts'ebetso ea ho qhibiliha.
Ka kakaretso, mocheso o motle ka ho fetisisa bakeng sa ho qhala ether ea cellulose ke 20-40°C. Haeba mocheso o le tlase haholo, ho ka hlokahala ho lelefatsa nako ea ho qhibiliha kapa ho sebelisa solvent e loketseng haholoanyane. Haeba mocheso o le holimo haholo, o ka baka ho senyeha ha ether ea cellulose 'me oa ama ts'ebetso ea eona.
3. Hlohlelletsa 'me u hlohlelletse
Ho hlohlelletsa le ho hlohlelletsa le hona ho bohlokoa ha ho qhala phofo ea ether ea cellulose. Ho hlohlelletsa ho nepahetseng ho thusa phofo ho hasana ka ho lekana ka har'a solvent le ho thibela ho kopana. Ho hlohlelletsa ho boetse ho thusa ho eketsa sekhahla sa ho qhibiliha, haholo-holo bakeng sa litharollo tse nang le viscosity e phahameng.
Leha ho le jwalo, ho sisinyeha ho feteletseng ho ka hlahisa dipululana tsa moya kapa foam, e leng se ka amang ho hlaka le botsitso ba tharollo. Ka hona, ho hlokahala ho lokisa lebelo la ho sisinyeha le matla ho ya ka ditlhoko tse ikgethang le tikoloho ya tshebediso ya phofo ya ether ya cellulose.
4. Lintho tse ekelitsoeng
Dintho tse eketswang di ka eketswa nakong ya ho qhalana ha phofo ya ether ya cellulose ho ntlafatsa tshebetso kapa botsitso ba yona. Mohlala, borax kapa dintho tse ding tsa alkaline di ka eketswa ho lokisa pH ya tharollo le ho eketsa viscosity. Sodium bicarbonate e boetse e eketsa viscosity ya tharollo, e fokotsa lebelo la ho qhalana.
Li-additives tse ling tse kang li-surfactant, letsoai kapa li-polymers li ka sebelisoa ho ntlafatsa ho qhibiliha, botsitso kapa thepa e 'ngoe ea tharollo ea ether ea cellulose. Leha ho le joalo, ho bohlokoa ho sebelisa li-additives ka tekanyo le ho khetha ka hloko, kaha li-additives tse feteletseng kapa tse sa lokelang li ka baka litla-morao tse sa batleheng.
5. Nako ea ho qhala
Nako ea ho qhibiliha ke parameter ea bohlokoa tlhahisong le ts'ebelisong ea phofo ea ether ea cellulose. Nako ea ho qhibiliha e itšetlehile ka lintlha tse ngata tse kang mofuta oa ether ea cellulose, solvent, mocheso, lebelo la ho hlohlelletsa le mahloriso.
Ka kakaretso, phofo ea ether ea cellulose e lokela ho eketsoa ka har'a solvent butle-butle ka ho kopanya khafetsa ho fihlela tharollo e ts'oanang e fumanoa. Linako tsa ho qhibiliha li ka fapana ho tloha metsotsong e 'maloa ho isa lihora tse' maloa, ho latela lintlha tse boletsoeng ka holimo.
Ho bohlokoa ho beha leihlo ka hloko ts'ebetso ea ho qhibiliha le ho fetola liparamente ha ho hlokahala ho netefatsa boleng le botsitso ba tharollo ea ether ea cellulose.
Qetellong, phofo ea ether ea cellulose ke thepa e feto-fetohang le ea bohlokoa masimong a fapaneng a indasteri. Leha ho le joalo, ts'ebetso ea ho qhibiliha e bohlokoa ho fihlela ts'ebetso ea eona e ntle ka ho fetisisa. Ka ho ela hloko lintlha tse kang khetho ea solvent, taolo ea mocheso, ho hlohlelletsa, li-additives le nako ea ho qhibiliha, hoa khoneha ho fumana tharollo ea ether ea cellulose ea boleng bo holimo e fihlelang litlhoko tsa ts'ebeliso.
Nako ea poso: Phato-18-2023