Ho boloka metsi a hydroxypropyl methylcellulose ether
Ho bolokoa ha metsi a seretse sa motsoako o omileng ho bolela bokhoni ba seretse ho tšoara le ho notlela metsi. Ha viscosity ea hydroxypropyl methylcellulose ether e phahame, ho boloka metsi ho betere. Hobane sebopeho sa cellulose se na le li-bond tsa hydroxyl le ether, liathomo tsa oksijene lihlopheng tsa hydroxyl le ether li ikopanya le limolek'hule tsa metsi ho etsa li-hydrogen bond, e le hore metsi a mahala a fetohe metsi a tlamiloeng ebe a ts'oara metsi, ka hona a bapala karolo ea ho boloka metsi.
Ho qhibiliha ha Hydroxypropyl Methyl Cellulose Ether
1. Coarse particle cellulose ether e bonolo ho qhalakana ka metsing ntle le agglomeration, empa sekhahla sa ho qhibiliha se lieha haholo. Cellulose ether e ka tlase ho 60 mesh e qhibiliha ka metsing ka metsotso e ka bang 60.
2. Fine particle cellulose ether e bonolo ho hasana ka metsing ntle le agglomeration, 'me sekhahla sa ho qhibiliha se itekanetse. Cellulose ether ka holimo ho 80 mesh e qhibiliha ka metsing ka metsotso e ka bang 3.
3. Ultra-fine particle cellulose ether e qhalana kapele ka metsing, e qhibiliha ka potlako, ’me e etsa viscosity kapele. Cellulose ether ka holimo ho 120 mesh e qhibiliha ka metsing ka metsotsoana e ka bang 10-30.
Ha likaroloana tsa hydroxypropyl methylcellulose ether li le ntle, ho boloka metsi ho betere. Bokaholimo ba cellulose ether e mahoashe e qhibiliha hang ka mor'a hore e kopane le metsi 'me e etsa ketsahalo ea gel. Sekhomaretsi se thatela thepa ho thibela limolek'hule tsa metsi ho tsoela pele ho kenella. Ka linako tse ling e ke ke ea qhalakanngoa ka mokhoa o ts'oanang le ho qhibiliha esita le ka mor'a ho sisinyeha ha nako e telele, ho etsa tharollo e koahetsoeng ke maru kapa agglomeration. Likaroloana tse ntle li qhalakanngoa le ho qhibiliha hang ka mor'a hore li kopane le metsi ho theha viscosity e tšoanang.
PH boleng ba hydroxypropyl methylcellulose ether (e liehang kapa matla a pele a matla)
Boleng ba pH ba bahlahisi ba hydroxypropyl methylcellulose ether lapeng le kantle ho naha bo laoloa ke hoo e ka bang 7, e maemong a asiti. Hobane ho sa ntsane ho e-na le palo e kholo ea mehaho ea lesale la anhydroglucose mohahong oa molek'hule oa cellulose ether, selikalikoe sa anhydroglucose ke sehlopha se ka sehloohong se bakang ho lieha ha samente. Lesale la anhydroglucose le ka etsa li-ion tsa calcium ka har'a tharollo ea samente ea hydration ho hlahisa metsoako ea limolek'hule tsa tsoekere-calcium, ea fokotsa khatello ea ion ea calcium nakong ea ho kenella ha samente, ea thibela ho theoa le ho putlama ha calcium hydroxide le likristale tsa letsoai la calcium, le ho liehisa ho phalla ha metsi. samente. tshebetso. Haeba boleng ba PH bo le maemong a alkaline, seretse se tla hlaha maemong a pele a matla. Hona joale lifeme tse ngata li sebelisa sodium carbonate ho fetola boleng ba pH. Sodium carbonate ke mofuta oa sesebelisoa se behang kapele. Sodium carbonate e ntlafatsa ts'ebetso ea holim'a likaroloana tsa samente, e khothalletsa bonngoe pakeng tsa likaroloana, 'me e tsoela pele ho ntlafatsa viscosity ea seretse. Ka nako e ts'oanang, sodium carbonate e kopana ka potlako le li-ion tsa k'halsiamo ka seretse ho khothalletsa ho thehoa ha ettringite, 'me samente e kopanya ka potlako. Ka hona, boleng ba pH bo lokela ho fetoloa ho latela bareki ba fapaneng ts'ebetsong ea sebele ea tlhahiso.
Lintho tsa ho Koetlisa Moea tsa Hydroxypropyl Methyl Cellulose Ether
Phello e kenang moeeng ea hydroxypropyl methylcellulose ether haholo-holo hobane cellulose ether le eona ke mofuta oa sehlahisoa. Ts'ebetso ea sefahleho sa cellulose ether haholo-holo e hlaha sebopehong se tiileng sa khase-mokelikeli. Ntlha ea pele, ho kenngoa ha li-bubble tsa moea, ho lateloa ke ho hasana le phello ea Wetting. Cellulose ether e na le lihlopha tsa alkyl, tse fokotsang tsitsipano ea holim'a metsi le matla a sefahleho sa metsi haholo, e leng se etsang hore ho be bonolo ho hlahisa lipululana tse ngata tse nyenyane tse koetsoeng nakong ea ho sisinyeha ha motsoako o nang le metsi.
Lintho tsa Gel tsa Hydroxypropyl Methyl Cellulose Ether
Ka mor'a hore hydroxypropyl methylcellulose ether e qhibilihe ka har'a seretse, lihlopha tsa methoxyl le hydroxypropyl ka ketane ea limolek'hule li tla itšoara ka li-ion tsa calcium le li-ion tsa aluminium tse slurry ho etsa gel ea viscous le ho tlatsa seretse sa samente se se nang letho. , ho ntlafatsa ho kopana ha seretse, ho bapala karolo ea ho tlatsa habonolo le ho matlafatsa. Leha ho le joalo, ha matrix a kopantsoeng a le tlas'a khatello, polymer e ke ke ea bapala karolo e tsitsitseng ea ho tšehetsa, kahoo matla le ho mena ha seretse ho fokotseha.
Tlhahiso ea Filimi ea Hydroxypropyl Methyl Cellulose Ether
Ka mor'a hore hydroxypropyl methyl cellulose ether e eketsoe bakeng sa hydration, karolo e tšesaane ea filimi ea latex e thehoa pakeng tsa likaroloana tsa samente. Filimi ena e na le phello ea ho tiisa 'me e ntlafatsa ho omella ka holim'a seretse. Ka lebaka la ho boloka metsi a matle a hydroxypropyl methylcellulose ether, limolek'hule tse lekaneng tsa metsi li bolokiloe ka har'a seretse, kahoo li tiisa ho thatafala ha samente le nts'etsopele e feletseng ea matla, ho ntlafatsa matla a ho kopanya ha seretse, 'me ka nako e ts'oanang E. e ntlafatsa momahano oa seretse, e etsa hore seretse se be le polasetiki e ntle le ho fetoha habonolo, 'me se fokotsa ho honyela le ho senyeha ha seretse.
Nako ea poso: May-23-2023