Hydroxyethyl Cellulose Eteri

Hydroxyethyl cellulose ether jẹ polima ti ko ni ionic ti omi-iṣelọpọ, tiotuka ninu mejeeji gbona ati omi tutu.Hydroxyethyl cellulose ether ni ọpọlọpọ awọn viscosities, ati gbogbo awọn ojutu olomi kii ṣe Newtonian.

Hydroxyethyl cellulose ether ni awọn ohun-ini hydration ti o dara pupọ.Ojutu olomi rẹ jẹ dan ati aṣọ, pẹlu ito ti o dara ati ipele

Atẹle ni agbekalẹ igbekalẹ molikula pipe ti ether hydroxyethyl cellulose:

N = ìyí ti akojọpọ

Awọn ẹgbẹ hydroxyl mẹta wa lori ẹyọ anhydroglucose kọọkan ninu cellulose, eyiti a ṣe itọju pẹlu alkali ni ojutu iṣuu soda hydroxide olomi lati gba iyọ iṣuu soda cellulose, ati lẹhinna faragba iṣesi etherification pẹlu ohun elo afẹfẹ ethylene lati dagba hydroxyethyl cellulose ether.Ninu ilana ti iṣelọpọ HEC, ohun elo afẹfẹ ethylene ko le rọpo awọn ẹgbẹ hydroxyl nikan lori cellulose, ṣugbọn tun faragba iṣesi polymerization pq pẹlu awọn ẹgbẹ hydroxyl ni awọn ẹgbẹ ti o rọpo.