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Methyl selulose ikoreshwa cyane
Ibisobanuro
Methylcellulose ni ether idafite ionic selulose ether, ikorwa na etherification yinjiza amatsinda ya methyl muri selile.
Methylcellulose ni selile ya methyl ether. Umweru cyangwa umuhondo cyangwa umuhondo wijimye utuntu duto, filament cyangwa ifu. Impumuro nziza kandi itaryoshye, hamwe na 27% kugeza 32% byamatsinda ya hydroxyl igaragara muburyo bwimikorere ya matsinda. Inzego zitandukanye za methyl selulose zifite impamyabumenyi zitandukanye za polymerisation, kuva kuri 50 kugeza 1000; Uburemere bwacyo bwa molekuline (ugereranije) buri hagati ya 10000 na 22000 Da, kandi urugero rwarwo rwo gusimburwa rusobanurwa nkumubare mpuzandengo wamatsinda mato, ahujwe na buri glucose anhydride kumurongo.
ibisobanuro2
Ibintu bifatika na shimi
1, Kugaragara:Ifu yera cyangwa quasi-yera fibrous cyangwa ifu ya granular, impumuro nziza kandi itaryoshye.
2, Igisubizo:Hafi ya elegitoronike muri Ethanol, ether, chloroform (1: 1) muruvange irashobora gukora igisubizo kiboneye cyangwa cyahagaritswe. Muri 80-90 oC amazi ashyushye kubyimba vuba, gukonjesha nyuma yo gushonga vuba, gushonga kwamazi mubushyuhe bwicyumba birahagaze neza, gel ubushyuhe bwo hejuru, Bikora impinduka zidasubirwaho ziva muri gel zijya kumeneka nyuma yo gushyushya no gukonja.
3, Ibiranga:Ubushuhe buhebuje, gutatanya, gufatira hamwe, kubyimba, kwigana, gufata amazi no gukora firime, hamwe no kudahuza amavuta. Filime ifite ubukana buhebuje, guhinduka no gukorera mu mucyo. Kuberako itari ionic, irashobora guhuzwa nizindi emulisiferi, ariko biroroshye gushiramo umunyu kandi igisubizo gihamye murwego rwa pH 2-12.
4, Ubucucike:1.3g / cm; Ubucucike bugaragara: 0.25-0.7 g / cm3.
5, Ubushyuhe bwo guhindura ibara:190-200oC.
6, Ubushyuhe bwa Carbone:225-230oC.
7, Ubushyuhe bwo hejuru:47-53 indiri / cn.
Ibisobanuro ku bicuruzwa
Urupapuro rw'itariki ya tekiniki:
| Izina ry'umushinga | Ibipimo (Urukurikirane rwa 55AX) |
| Methoxyl | 27.0-32.0 |
| Ubushyuhe bwa gel | 50-55 |
| Uburemere bwumye | ≤5 |
| Gutwika ibisigazwa | ≤1 |
| Icyuma kiremereye | ≤20 |
| Umunyu wa Arsenic | ≤2 |
| Ph. | 5.0-8.0 |
| Viscosity | Reba ibyiciro bya viscosity |
Ibisobanuro byihariye
| Icyiciro | Ibisobanuro | Urwego |
| Ubukonje buke | 50 | 40-60 |
| 100 | 80-120 | |
| 400 | 350-450 | |
| Ubukonje bukabije | 1000 | 800-1200 |
| 2000 | 1600-2400 | |
| 4000 | 3500-4500 | |
| Ubukonje bukabije | 30000 | 24000-36000 |
| 50000 | 45000-55000 | |
| 75000 | 70000-80000 | |
| 100000 | 85000-105000 |