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I-Methyl cellulose isetyenziswa ngokubanzi
Inkcazo
I-Methylcellulose yi-ether ye-cellulose engekho i-ionic, eveliswa yi-etherification ngokuzisa amaqela e-methyl kwi-cellulose.
I-Methylcellulose yi-cellulose methyl ether. Amasuntswana amancinane amhlophe okanye atyheli akhanyayo okanye angwevu, anefilamentous okanye umgubo. Ayinavumba kwaye ayinancasa, malunga ne-27% ukuya kwi-32% yamaqela e-hydroxyl akhoyo ngohlobo lwamaqela e-methoxy. Amanqanaba ahlukeneyo e-methyl cellulose aneedigri ezahlukeneyo zepolymerization, ukusuka kwi-50 ukuya kwi-1000; Kwaye ubunzima bayo be-molecular (umyinge) buvela kwi-10000 ukuya kwi-22000 Da, kwaye iqondo layo lokutshintshwa lichazwa njengenani eliqhelekileyo lamaqela e-methoxy, adibaniswe kwiyunithi nganye ye-glucose anhydride kwikhonkco.
inkcazelo2
IiPropati zoMzimba kunye nezeMichiza
1, Imbonakalo:Umgubo omhlophe okanye omhlophe okanye omhlophe, ongenavumba kwaye awunancasa.
2, Isisombululo:Phantse i-insoluble kwi-ethanol, i-ether, i-chloroform (1: 1) kumxube inokwenza isisombululo esicacileyo okanye esimisiweyo se-viscous. Kumanzi ashushu angama-80-90 oC ukudumba okukhawulezileyo, ukupholisa emva kokunyibilika ngokukhawuleza, ukunyibilika kwamanzi kwiqondo lobushushu begumbi kuzinzile, ijeli yobushushu obuphezulu, Ingena kwinguqu ebuyiselwa umva ukusuka kwijeli ukuya ekunyibilikeni emva kokufudumeza nokupholisa.
3, Iimpawu:Ukumanzisa okugqwesileyo, ukusasazwa, ukunamathela, ukuqina, ukuthambisa, ukubamba amanzi kunye nokwenza ifilimu, kunye nokunganyanzeki kweoli. Ifilimu inokuqina okubalaseleyo, ukuguquguquka kunye nokungafihli. Ngenxa yokuba i-non-ionic, inokuhambelana namanye ama-emulsifiers, kodwa kulula ukugalelwa ityuwa kwaye isisombululo sizinzile kuluhlu lwe-pH 2-12.
4, Ubuninzi:1.3g/cm;Uxinzelelo olubonakalayo: 0.25-0.7 g/cm3.
5, Ubushushu bokutshintsha umbala:190-200oC.
6, ubushushu beCarbonization:225-230oC.
7, Uxinzelelo lomphezulu:47-53 den / cn.
Ukuchazwa kwemveliso
Icwecwe loMhla woBugcisa:
| Igama leprojekthi | Iimpawu (55AX Series) |
| Methoxyl | 27.0-32.0 |
| Ubushushu beGel | 50-55 |
| Ubunzima obumileyo | ≤5 |
| Ukutshisa intsalela | ≤1 |
| Intsimbi enzima | ≤20 |
| Ityuwa yeArsenic | ≤2 |
| Ph. | 5.0-8.0 |
| Viscosity | Jonga ukuhlelwa kwe-viscosity |
Iimpawu zeViscosity
| Udidi | Inkcazo | Uluhlu |
| I-viscosity ephantsi | 50 | 40-60 |
| 100 | 80-120 | |
| 400 | 350-450 | |
| I-viscosity ephezulu | 1000 | 800-1200 |
| 2000 | 1600-2400 | |
| 4000 | 3500-4500 | |
| I-viscosity ephezulu eyongezelelweyo | 30000 | 24000-36000 |
| 50000 | 45000-55000 | |
| 75000 | 70000-80000 | |
| 100000 | 85000-105000 |