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Methyl cellulose ana amfani dashi sosai
Bayani
Methylcellulose shine ether cellulose maras ionic, wanda aka samar ta hanyar etherification ta hanyar shigar da kungiyoyin methyl cikin cellulose.
Methylcellulose shine cellulose methyl ether. Fari ko haske rawaya ko haske launin toka ?ananan barbashi, filamentous ko foda. Marasa wari da ?an?ano, tare da kusan 27% zuwa 32% na ?ungiyoyin hydroxyl wa?anda ke cikin nau'ikan ?ungiyoyin methoxy. Matakan daban-daban na methyl cellulose suna da digiri daban-daban na polymerization, daga 50 zuwa 1000; Kuma nauyinsa na kwayoyin halitta (matsakaicin) ya tashi daga 10000 zuwa 22000 Da, kuma an bayyana matakin maye gurbinsa a matsayin matsakaicin adadin ?ungiyoyin methoxy, wa?anda ke da ala?a da kowane rukunin glucose anhydride akan sarkar.
bayanin 2
Abubuwan Jiki da Sinadarai
1, Bayyanar:Fari ko fari-farin fibrous ko granular foda, mara wari da rashin ?an?ano.
2, Magani:Kusan insoluble a cikin ethanol, ether, chloroform (1: 1) a cikin cakuda zai iya samar da bayani mai haske ko dakatarwa. A cikin 80-90 oC ruwan zafi mai saurin kumburi, sanyaya bayan saurin rushewa, rushewar ruwa a cikin zafin jiki yana da kwanciyar hankali, babban zafin jiki gel, yana jujjuya canjin canji daga gel zuwa rushewa bayan dumama da sanyaya.
3, Halaye:Madalla da wettability, watsawa, mannewa, thickening, emulsifying, ruwa-ri?e da kuma film-forming, da kuma man impermeability. Fim ?in yana da kyakkyawan tauri, sassauci da bayyana gaskiya. Saboda ba shi da ionic, yana iya dacewa da sauran emulsifiers, amma yana da sau?i a fitar da gishiri kuma bayani ya tsaya a cikin kewayon pH 2-12.
4, Yawan yawa:1.3g/cm; Girman bayyane: 0.25-0.7 g/cm3.
5, Zazzabi mai launi:190-200oC.
6, Zazzabi Carbonization:225-230oC.
7, Tashin hankali:47-53 den/cn.
?ayyadaddun samfur
Takardar Kwanan Watan Fasaha:
| Sunan aikin | Manuniya (Jerin 55AX) |
| Methoxyl | 27.0-32.0 |
| Gel zafin jiki | 50-55 |
| Rashin nauyi mai bushewa | ≤5 |
| Ragowar kuna | ≤1 |
| Karfe mai nauyi | ≤20 |
| Gishiri arsenic | ≤2 |
| Ph. | 5.0-8.0 |
| Dankowar jiki | Duba rabe-raben danko |
Bayani dalla-dalla
| Kashi | ?ayyadaddun bayanai | Rage |
| ?ananan danko | 50 | 40-60 |
| 100 | 80-120 | |
| 400 | 350-450 | |
| Babban danko | 1000 | 800-1200 |
| 2000 | 1600-2400 | |
| 4000 | 3500-4500 | |
| Extra high danko | 30000 | 24000-36000 |
| 50000 | 45000-55000 | |
| 75000 | 70000-80000 | |
| 100000 | 85000-105000 |