Nā Waiwai Kūlana no ka Mahanahana Gel – Hydroxypropyl Methyl Cellulose

1. Ka wela gel (0.2% solution) 50-90°C.

2. Hiki ke hoʻoheheʻe ʻia i ka wai a me ka nui o ka polar c a me ka ʻāpana kūpono o ka ethanol/wai, propanol/wai, dichloroethane, a me nā mea ʻē aʻe, ʻaʻole hiki ke hoʻoheheʻe ʻia i ka etera, acetone, ethanol piha, a pehu i loko o ka wai anuanu. Loaʻa i ka hoʻonā wai i ka hana ʻili, ke ʻike kiʻekiʻe a me ka hana paʻa.

3. Loaʻa i ka HPMC ka waiwai o ka gelation thermal. Hoʻomaʻamaʻa ʻia ka hopena wai wai e hana i kahi gel a hoʻoheheʻe ʻia, a laila hoʻoheheʻe ʻia ma hope o ka hoʻoilo. ʻOkoʻa ka mahana gelation o nā kikoʻī like ʻole. ʻokoʻa ka solubility me ka viscosity. ʻO ka haʻahaʻa o ka viscosity, ʻoi aku ka nui o ka solubility. Loaʻa nā ʻokoʻa like ʻole o ka HPMC i kā lākou mau waiwai, a ʻaʻole pili ka hoʻoheheʻe ʻana o HPMC i ka wai e ka pH waiwai.

4. ʻO ka nui o ka ʻāpana: ʻoi aku ka nui o ka hala o 100 mesh ma mua o 98.5%. Māmā nui: 0.25-0.70g/ (maʻa mau ma kahi o 0.4g/), ʻumekaumaha kikoʻī 1.26-1.31. Ka wela hoʻololi: 180-200°C, ka mahana carbonization: 280-300°C. Aia ka waiwai methoxyl mai 19.0% a 30.0%, a ʻo ka waiwai hydroxypropyl mai 4% a 12%. Viscosity (22°C, 2%) 5～200000mPa .s. ʻO ka mahana gel (0.2%) he 50-90 ° C.

5. Loaʻa i ka HPMC nā hiʻohiʻona o ka hiki ke mānoanoa, ka hoʻokuʻu ʻana o ka paʻakai, ka paʻa PH, ka mālama ʻana i ka wai, ke kūpaʻa dimensional, ka waiwai hana kiʻiʻoniʻoni maikaʻi loa a me ka laulā o ke kūpaʻa enzyme, dispersibility a me ka cohesiveness.