Ka taea te whakaranu i te HPMC me te CMC
Mītirau pūtauHe mā, he mā rānei te āhua, he rite ki te paura muka, ki te paura kirikiri rānei; Kāore he kakara, kāore he reka. Ka pupuhi tēnei hua i roto i te wai hei wairewa korori mārama, paku pōuri rānei; Kāore e rewa i roto i te etanoru tino, te chloroform, te diethyl ether rānei. Ka tere te marara me te pupuhi i roto i te wai wera i te 80-90 ℃, ā, ka tere te rewa i muri i te whakamatao. He tino pumau te wairewa wai i te pāmahana rūma, ā, ka taea te whakapiripiri i te pāmahana teitei, ā, ka taea te huri i te kirikiri me te wairewa me te pāmahana.
He tino pai te makuku, te horapa, te piri, te matotoru, te whakaemulsification, te pupuri wai me te hanga kiriata, tae atu ki te ātete hinu. He tino pakari, he ngāwari, he mārama hoki te kiriata. Nā te mea ehara i te ionic, ka taea te hototahi ki ētahi atu emulsifiers, engari he ngawari ki te tote, ā, he pumau te otinga i roto i te awhe PH2 — 12. Sodium carboxymethyl cellulose Ko tēnei hua he tote konutai o te cellulose carboxymethyl ether, nō te anionic cellulose ether, he paura muka, he matūriki mā, he rite ki te miraka, he mātotoru 0.5-0.7 g/henimita kūpiko, tata kore kakara, kore reka, hygroscopic. He ngawari ki te horapa ki roto i te wai ki roto i te otinga gelatinous mārama, kāore e rewa i roto i te etanoru me ētahi atu whakarewa waro.
Ina 6.5 — 8.5 te pH o te wairewa, ka tino heke te matotoru o te paru ina neke atu i te 10 te pH, ina iti iho rānei i te 5, ā, ko te mahi pai rawa atu ina 7 te pH. Mō te pumau o te wera, ka tere te piki o te matotoru i raro i te 20℃, ka āta whakarerekē i te 45℃, ā, ka tino heke te whakakorenga o te colloid me te matotoru me ngā āhuatanga ina werahia mō te wā roa i runga ake i te 80℃. He ngāwari te wairewa i roto i te wairewa mārama; He tino pumau i roto i te wairewa kawakore, ā, he ngāwari ki te waikura i roto i te take o te waikawa. Ina 2-3 te uara pH, ka puta te ua, ā, ka puta hoki te ua i roto i te take o ngā tote konganuku maha-valent. Ko te Hydroxypropyl methyl cellulose, e mōhiotia ana ko te hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether, ko te kōwhiringa o te cellulose miro tino parakore hei rauemi mata, i raro i ngā āhuatanga kawakore mā te etherification me te whakarite motuhake.
Ka wairewa ki te wai me te nuinga o te C porotaka, ā, he tika te ōwehenga o te etanoru/wai, te propanol/wai, te dichloroethane, me ētahi atu. Kāore e wairewa ki te diethyl ether, te acetone, te etanoru tino, ka pupuhi i te wai matao hei wairewa colloidal mārama, paku pōuri rānei. He nui te mahi mata o te wairewa wai, he mārama teitei, ā, he pumau te mahi.HPMCHe rite te āhua ki te tiēre wera. I muri i te whakamahana, ka hanga he wai tiēre wai te hua, kātahi ka rewa i muri i te whakamatao. He rerekē te pāmahana tiēre o ngā whakatakotoranga rerekē.
Wā tuku: Paenga-whāwhā-25-2024