Hydroxyethyl cellulose (HEC) ya kasance mai narkewa sosai da ruwa akan kewayon zafin jiki mai faɗi, har ma a cikin yankuna masu zafin jiki inda sauran ethers ɗin cellulose waɗanda ba a haɗa su ba kamar su methyl cellulose (MC) da hydroxypropyl methyl cellulose (HpMC) suna nuna alamun turbidity.Don bayyana dalilin babban solubility na HEC, yawan dogara da zafin jiki na abun da ke cikin ruwa na nH ga kowane rukunin glucopyran a cikin samfuran HEC an yi nazari akan ma'aunin zafin jiki masu zuwa daga 10 zuwa 70 ° C ta amfani da ma'aunin bakan dielectric mai tsayi har zuwa 50 GHz.
A cikin wannan binciken, an bincika samfuran HEC don adadin molar adadin maye gurbin hydroxyethyl (MS) na kowane rukunin pyran na glucose daga 1.3 zuwa 3.6.Duk samfuran HEC an narkar da su cikin ruwa a cikin kewayon zafin da aka bincika kuma ba su nuna alamun turbidity ba.Ƙimar nH na samfuran HEC tare da MS 1.3 shine 14 a 20 ° C, kuma yana raguwa sannu a hankali tare da hawan zafi, kuma ya sauke zuwa 10 a 70 ° C.Ƙimar PH na samfurin HEC a fili ya fi girma fiye da ƙaramin mahimmancin nH na kimanin.5 Cellulose ethers kamar MC da HpMC dole ne a narkar da su a cikin ruwa, har ma a cikin babban yanayin zafi.
Kwayoyin HEC, duk da haka, suna da ruwa mai narkewa akan kewayon zafin jiki mai faɗi.Dogaro da zafin jiki na nH na samfuran HEC da triglycol (samfurin mahaɗan HEC) yana da sauƙi kuma suna kama da juna.Wannan abin lura yana ba da shawara mai ƙarfi cewa halayen hydration / rashin ruwa na samfuran HEC suna da iko da yawa ta ƙungiyoyin da suka maye gurbinsu.3 shine 14 a 20 ° C, yana raguwa sannu a hankali yayin da zafin jiki ya tashi, kuma ya faɗi zuwa 10 a 70 ° C.Ƙimar nH na samfurin HEC a fili ya fi girma fiye da ƙaramin mahimmancin nH na kimanin.5 Cellulose ethers kamar MC da HpMC dole ne a narkar da su a cikin ruwa, har ma a cikin babban yanayin zafi.Kwayoyin HEC, duk da haka, suna da ruwa mai narkewa akan kewayon zafin jiki mai faɗi.Dogaro da zafin jiki na nH na samfuran HEC da triglycol (samfurin mahaɗan HEC) yana da sauƙi kuma suna kama da juna.
Wannan abin lura yana ba da shawara mai ƙarfi cewa halayen hydration / rashin ruwa na samfuran HEC suna da iko da yawa ta ƙungiyoyin da suka maye gurbinsu.3 shine 14 a 20 ° C, yana raguwa sannu a hankali yayin da zafin jiki ya tashi, kuma ya faɗi zuwa 10 a 70 ° C.Ƙimar nH na samfurin HEC a fili ya fi girma fiye da ƙaramin mahimmancin nH na kimanin.5 Cellulose ethers kamar MC da HpMC dole ne a narkar da su a cikin ruwa, har ma a cikin babban yanayin zafi.Kwayoyin HEC, duk da haka, suna da ruwa mai narkewa akan kewayon zafin jiki mai faɗi.Dogaro da zafin jiki na nH na samfuran HEC da triglycol (samfurin mahaɗan HEC) yana da sauƙi kuma suna kama da juna.Wannan abin lura yana ba da shawarar sosai cewa halayen hydration/dehydration na samfuran HEC suna da iko sosai ta ƙungiyoyin da suka maye gurbinsu.
Ƙimar nH na samfurin HEC a fili ya fi girma fiye da ƙaramin mahimmancin nH na kimanin.5 Cellulose ethers kamar MC da HpMC dole ne a narkar da su a cikin ruwa, har ma a cikin babban yanayin zafi.Kwayoyin HEC, duk da haka, suna da ruwa mai narkewa akan kewayon zafin jiki mai faɗi.Dogaro da zafin jiki na nH na samfuran HEC da triglycol (samfurin mahaɗan HEC) yana da sauƙi kuma suna kama da juna.Wannan abin lura yana ba da shawara mai ƙarfi cewa halayen hydration / rashin ruwa na samfuran HEC suna da iko da yawa ta ƙungiyoyin da suka maye gurbinsu.Ƙimar nH na samfurin HEC a fili ya fi girma fiye da ƙaramin mahimmancin nH na kimanin.5 Cellulose ethers kamar MC da HpMC dole ne a narkar da su a cikin ruwa, har ma a cikin babban yanayin zafi.Kwayoyin HEC, duk da haka, suna da ruwa mai narkewa akan kewayon zafin jiki mai faɗi.Dogaro da zafin jiki na nH na samfuran HEC da triglycol (samfurin mahaɗan HEC) yana da sauƙi kuma suna kama da juna.
Wannan abin lura yana ba da shawara mai ƙarfi cewa halayen hydration / rashin ruwa na samfuran HEC suna da iko da yawa ta ƙungiyoyin da suka maye gurbinsu.Kwayoyin HEC suna da ruwa mai narkewa akan kewayon zafin jiki mai faɗi.Dogaro da zafin jiki na nH na samfuran HEC da triglycol (samfurin mahaɗan HEC) yana da sauƙi kuma suna kama da juna.Wannan abin lura yana ba da shawara mai ƙarfi cewa halayen hydration / rashin ruwa na samfuran HEC suna da iko da yawa ta ƙungiyoyin da suka maye gurbinsu.Kwayoyin HEC suna da ruwa mai narkewa akan kewayon zafin jiki mai faɗi.Dogaro da zafin jiki na nH na samfuran HEC da triglycol (samfurin mahaɗan HEC) yana da sauƙi kuma suna kama da juna.Wannan abin lura yana ba da shawara mai ƙarfi cewa halayen hydration / rashin ruwa na samfuran HEC suna da iko da yawa ta ƙungiyoyin da suka maye gurbinsu.
Lokacin aikawa: Maris-04-2022