Ingoa hua:hydroxyethyl methyl celluloseHEMC
Ingoa Ingarihi: Hymetellose
Ingoa ingoa: methyl hydroxyethyl cellulose; MHEC,hydroxyethyl methyl cellulose ether;
hydroxymethyl ethyl cellulose; 2-hydroxyethyl methyl ether cellulose
Ingoa Ingarihi: Methylhydroxyethylcellulose; Cellulose; 2-hydroxyethyl methyl ether; HEMC; Tyopur MH[1]
Matū: Hydroymethylmethylecellulose; Hydroxyethylmethylcellulose; Hydroxymethylethylcellulose.
Ngota ngota: C2H6O2 xCH4O x PhEur 2002 ka tautuhia te hydroxyethylmethylcellulose hei waahanga O-methylated, he waahanga O-hydroxymethylated cellulose. Ko nga korero rereke e whakaatuhia ana i runga i te ahua o te pokey i roto i nga mPa s o te wairewa wai 2% w/v i te 20°C.
Te taumaha o te ngota: PhEur 2002 te tautuhi hydroxyethylmethylcellulose hei waahanga O-methylated, he waahanga O-hydroxymethylated cellulose. Ko nga korero rereke e whakaatuhia ana i runga i te ahua o te pokey i roto i nga mPa o te wairewa wai 2% w/v i te 20°C.
Ko nga ahuatanga matua o te hydroxyethyl methyl cellulose (HEMC) ko:
1. Te whakarewatanga: ka whakarewahia i roto i te wai me etahi whakarewa pararopi, ka taea te whakakore i te HEMC ki te wai makariri, ko te nui o te kaha ka whakatauhia e te viscosity, he rereke te rereke ki te viscosity, te iti o te viscosity, te nui ake o te whakarewatanga.
2. Te tote tote: Ko nga hua HEMC he etera cellulose kore-katote, ehara i te polyelectrolytes, na i te aroaro o nga tote whakarewa, i nga electrolytes waro ranei, he ahua pumau i roto i nga wairewa wai, engari ko te taapiri nui o nga electrolytes ka taea te whakaheke me te ua.
3. Mahi mata: I te mea he mahi mahi mata te wairewa wai, ka taea te whakamahi hei kaihoko whakamarumaru colloid, emulsifier me te dispersant.
4. Waariki waiariki: I te wa e whakamahanahia ana te otinga wai o te HEMC ki tetahi pāmahana, ka puta he puatakore, he kaera, ka hanga he rerenga, engari ka whakamatao tonu, ka hoki ki te ahua o te otinga taketake, a ka puta tenei ra me te rerenga. . Ko te pāmahana e whakawhirinaki ana ki o raatau hinu, ki te aukati i nga awhina, ki nga colloids whakamarumaru, ki nga emulsifiers, etc.
5. Te ngoikore o te metabolic me te iti o te kakara me te kakara: Kei te whakamahia nuitia te HEMC ki te kai me te rongoa na te mea kaore i te metabolized he iti te kakara me te kakara.
6. Antifungal: He pai te kaha antifungal a HEMC me te pai o te whakapumautanga i te wa roa o te rokiroki.
7. PH pūmautanga: Ko te pokey o HEMC hua wairewa wai whakauaua e pāngia e te waikawa alkali ranei, me te uara pH he āhua pūmau i roto i te whānuitanga o 3.0-11.0.
Taupānga: Ka taea te whakamahi Hydroxyethyl methyl cellulose hei kaihoko whakamarumaru colloid, emulsifier me te dispersant na te mahi kaha o te mata o te wairewa wai. Ko tetahi tauira o tana whakamahinga e whai ake nei: Ko te paanga o te hydroxyethyl methyl cellulose ki nga ahuatanga o te ciment. Ko te Hydroxyethyl methylcellulose he paura ma, he hongi, he kore paitini ka memeha ki te wai matao hei hanga i te wairewa maramara, kirikiri. Kei a ia nga ahuatanga o te whakapakeke, te here, te whakamarara, te whakaemulsifying, te hanga kiriata, te whakatārewa, te adsorbing, te gelling, te mahi-mata, te pupuri i te makuku me te tiaki i nga colloids. Na te mahi kaha o te mata o te wairewa wai, ka taea te whakamahi hei kaihoko tiaki colloid, he emulsifier me te dispersant. Hydroxyethyl methyl cellulose otinga aqueous he hydrophilicity pai, me te he tino-kakama te māngai pupuri wai.
Wā tuku: Oketopa-09-2022