ʻO ka Hydroxyethyl cellulose (HEC)noho mau i ka wai-hoʻoheheʻe ʻia ma luna o kahi ākea ākea o ka mahana, ʻoiai ma nā wahi wela kiʻekiʻe kahi e hōʻike ai nā ʻetera cellulose i hoʻololi ʻia i ka kemika non-ionic e like me ka methyl cellulose (MC) a me ka hydroxypropyl methyl cellulose (HpMC) i nā kiko turbidity. No ka hoʻomālamalama ʻana i ke kumu o ka solubility kiʻekiʻe o HEC, ua nānā ʻia ka hilinaʻi o ka mahana o ka haku mele wai nH no kēlā me kēia ʻāpana glucopyran i nā laʻana HEC ma luna o nā pae mahana aʻe mai 10 a 70 °C me ka hoʻohana ʻana i nā ana spectrum dielectric alapine kiʻekiʻe loa a hiki i 50 GHz.
Ma kēia haʻawina, ua nānā ʻia nā laʻana HEC no ka helu molar o nā pani hydroxyethyl (MS) o kēlā me kēia ʻāpana glucose pyran mai 1.3 a 3.6. Ua hoʻoheheʻe ʻia nā laʻana HEC āpau i loko o ka wai i loko o ka pae mahana i nānā ʻia a ʻaʻole i hōʻike i nā kiko turbidity. ʻO ka waiwai nH o nā laʻana HEC me MS 1.3 he 14 ma 20 °C, a emi mālie me ka piʻi ʻana o ka mahana, a hāʻule i 10 ma 70 °C. ʻOi aku ka nui o ka waiwai PH o ka laʻana HEC ma mua o ka waiwai nH koʻikoʻi liʻiliʻi loa o kahi kokoke. 5 Pono e hoʻoheheʻe ʻia nā cellulose ethers e like me MC a me HpMC i loko o ka wai, ʻoiai ma ka pae wela kiʻekiʻe.
Eia naʻe, hiki ke hoʻoheheʻe ʻia nā molekala HEC i ka wai ma luna o kahi pae wela ākea. ʻO ka hilinaʻi ʻana o ka nH i ka mahana o nā laʻana HEC a me triglycol (nā hui hoʻohālike o nā mea pani HEC) he akahai a ua like lākou kekahi me kekahi. Hōʻike ikaika kēia ʻike ʻana ua kāohi nui ʻia ke ʻano hydration/dehydration o nā laʻana HEC e kā lākou mau hui pani. ʻO 3 he 14 ma 20 °C, emi mālie i ka piʻi ʻana o ka mahana, a hāʻule i 10 ma 70 °C. ʻOi aku ka nui o ka waiwai nH o ka laʻana HEC ma mua o ka waiwai nH koʻikoʻi liʻiliʻi o kahi kokoke. 5 Pono e hoʻoheheʻe ʻia nā ethers Cellulose e like me MC a me HpMC i ka wai, ʻoiai ma ka pae wela kiʻekiʻe. Eia naʻe, hiki ke hoʻoheheʻe ʻia nā molekala HEC i ka wai ma luna o kahi pae wela ākea. ʻO ka hilinaʻi ʻana o ka nH i ka mahana o nā laʻana HEC a me triglycol (nā hui hoʻohālike o nā mea pani HEC) he akahai a ua like lākou kekahi me kekahi.
Hōʻike ikaika kēia ʻike ʻana ua kāohi nui ʻia ke ʻano hydration/dehydration o nā laʻana HEC e kā lākou mau hui i pani ʻia. ʻO 3 he 14 ma 20 °C, emi mālie i ka piʻi ʻana o ka mahana, a hāʻule i 10 ma 70 °C. ʻOi aku ka nui o ka waiwai nH o ka laʻana HEC ma mua o ka waiwai nH koʻikoʻi liʻiliʻi o kahi kokoke. 5 Pono e hoʻoheheʻe ʻia nā cellulose ethers e like me MC a me HpMC i ka wai, ʻoiai ma ka pae wela kiʻekiʻe. Eia naʻe, hiki ke hoʻoheheʻe ʻia nā molekala HEC i ka wai ma luna o kahi pae wela ākea. ʻO ka hilinaʻi wela o nH oHEChe akahai nā laʻana a me ka triglycol (nā hui hoʻohālike o nā mea pani HEC) a ua like lākou kekahi me kekahi. Hōʻike ikaika kēia ʻike ʻana ua kāohi nui ʻia ke ʻano hydration/dehydration o nā laʻana HEC e kā lākou mau hui i pani ʻia.
ʻOi aku ka nui o ka waiwai nH o ka hāpana HEC ma mua o ka waiwai nH koʻikoʻi liʻiliʻi loa o kahi kokoke. 5 Pono e hoʻoheheʻe ʻia nā cellulose ethers e like me MC a me HpMC i loko o ka wai, ʻoiai ma ka pae wela kiʻekiʻe. Eia naʻe, hiki ke hoʻoheheʻe ʻia nā molekala HEC i ka wai ma luna o kahi pae wela ākea. ʻO ka hilinaʻi ʻana o ka mahana o nH o nā hāpana HEC a me triglycol (nā hui hoʻohālike o nā mea hoʻololi HEC) he akahai a ua like lākou kekahi me kekahi. Hōʻike ikaika kēia ʻike ʻana ua kāohi nui ʻia ke ʻano hydration/dehydration o nā hāpana HEC e kā lākou mau hui i pani ʻia. ʻOi aku ka nui o ka waiwai nH o ka hāpana HEC ma mua o ka waiwai nH koʻikoʻi liʻiliʻi loa o kahi kokoke. 5 Pono e hoʻoheheʻe ʻia nā cellulose ethers e like me MC a me HpMC i loko o ka wai, ʻoiai ma ka pae wela kiʻekiʻe. Eia naʻe, hiki ke hoʻoheheʻe ʻia nā molekala HEC i ka wai ma luna o kahi pae wela ākea. ʻOi aku ka liʻiliʻi o ka hilinaʻi ʻana o ka mahana o nH o nā hāpana HEC a me triglycol (nā hui hoʻohālike o nā mea hoʻololi HEC) a ua like lākou kekahi me kekahi.
Hōʻike ikaika kēia ʻike ʻana ua kāohi nui ʻia ke ʻano hydration/dehydration o nā laʻana HEC e kā lākou mau hui i pani ʻia. Hiki ke hoʻoheheʻe ʻia nā molekala HEC i ka wai ma luna o kahi pae mahana ākea. ʻO ka hilinaʻi ʻana o ka mahana o nH o nā laʻana HEC a me triglycol (nā hui hoʻohālike o nā mea pani HEC) he akahai a ua like lākou kekahi me kekahi. Hōʻike ikaika kēia ʻike ʻana ua kāohi nui ʻia ke ʻano hydration/dehydration o nā laʻana HEC e kā lākou mau hui i pani ʻia.HECHe wai ka wai o nā molekala ma luna o kahi pae wela ākea. He akahai ka hilinaʻi ʻana o ka nH i ka mahana o nā laʻana HEC a me ka triglycol (nā hui hoʻohālike o nā mea pani HEC) a ua like lākou kekahi me kekahi. Hōʻike ikaika kēia ʻike ʻana ua kāohi nui ʻia ke ʻano hydration/dehydration o nā laʻana HEC e kā lākou mau hui i pani ʻia.
Ka manawa hoʻouna: ʻApelila-25-2024