Ka wehea hoki te matotoru o te konutai carboxymethyl cellulose ki ngā momo maha e ai ki ngā whakamahinga rerekē. Ko te matotoru o te momo horoi he 10~70 (kei raro i te 100), ko te rohe matotoru o runga kei waenga i te 200~1200 mō te whakapaipai whare me ētahi atu ahumahi, ā, he teitei ake te matotoru o te momo kai. Kei runga ake i te 1000 katoa, ā, kāore i te ōrite te matotoru o ngā ahumahi rerekē.
Nā te whānuitanga o ōna whakamahinga.
Ka pāngia te matotoru o te konutai carboxymethyl cellulose e tōna papatipu ngota whanaunga, te kukū, te pāmahana me te uara pH, ā, ka konatunatua ki te ethyl, carboxypropyl cellulose rānei, te gelatin, te xanthan gum, te carrageenan, te locust bean gum, te guar gum, te agar, te sodium alginate, te pectin, te gum arabic me te māngaro, ā, he pai te hototahitanga o ōna hua (arā, te pānga mahi tahi).
Ina 7 te uara pH, ko te matotoru o te wairewa konutai carboxymethyl cellulose te mea teitei rawa, ā, ina 4~11 te uara pH, he āhua pumau. Ka wairewa te carboxymethylcellulose i roto i te ahua o te konganuku kawakore me ngā tote ammonia ki te wai. Ka pāngia e ngā katote konganuku takirua Ca2+, Mg2+, Fe2+ tōna matotoru. Ka taea e ngā konganuku taumaha pēnei i te hiriwa, te barium, te chromium, te Fe3+ rānei te whakaputa i te wairewa ki waho. Mena ka whakahaeretia te kukū o ngā katote, pēnei i te tāpiri o te waikawa citric hei whakapūmau, ka taea te hanga i tētahi wairewa matotoru ake, ka hua ake he kapia ngohengohe, he kapia mārō rānei.
Ko te konutai carboxymethyl cellulose he momo cellulose tūturu, he mea hanga i te miro miro, i te penupenu rakau rānei hei rauemi mata, ā, ka tukuna ki te tauhohenga etherification me te waikawa monochloroacetic i raro i ngā āhuatanga kawakore.
E ai ki ngā whakaritenga o ngā rauemi mata me te whakakapinga o te hauwai hydroxyl i roto i te waeine cellulose D-glucose e te rōpū carboxymethyl, ka whiwhihia ngā pūhui polymer wairewa-wai me ngā nekehanga rerekē o te whakakapinga me ngā tohatoha taumaha ngota rerekē.
Nā te mea he maha ngā āhuatanga ahurei me te pai o te konutai carboxymethyl cellulose, he whānuitia te whakamahinga i roto i te ahumahi matū o ia rā, te kai me te rongoā me ētahi atu mahi ahumahi.
Ko tētahi o ngā tohu tino nui o te konutai carboxymethyl cellulose ko te matotoru o te konutai carboxymethyl cellulose. E pā ana te uara o te matotoru ki ngā āhuatanga maha pērā i te kukū, te pāmahana me te tere kutikuti. Heoi, ko ngā āhuatanga pērā i te kukū, te pāmahana me te tere kutikuti ngā āhuatanga o waho e pā ana ki te matotoru o te konutai carboxymethyl cellulose.
Ko tōna taumaha ngota me tōna tohatoha ngota ngā āhuatanga ā-roto e pā ana ki te matotoru o te otinga konutai carboxymethyl cellulose. Mō te whakahaere whakaputa me te whakawhanake i te mahi hua o te konutai carboxymethyl cellulose, he mea tino nui te rangahau i tōna taumaha ngota me tōna tohatoha taumaha ngota, engari ko te ine matotoru ka taea anake te whai i tētahi mahi tohutoro.
Ngā ture a Newton i roto i te rheology, tēnā pānuihia ngā kōrero e pā ana ki te kupu "rheology" i roto i te matū ā-tinana, he uaua ki te whakamārama i roto i te rerenga kotahi, e rua rānei. Mēnā me kī atu: mō te otinga waimeha o te cmc e tata ana ki te wai Newtonian, he rite te ahotea kutikuti ki te tere tapahi, ā, ko te tauwehenga tauwehe i waenganui i a rātou ka kiia ko te tauwehenga matotoru, ko te matotoru kinematic rānei.
Ko te matotorutanga i ahu mai i ngā kaha i waenga i ngā mekameka ngota ngota cellulose, tae atu ki ngā kaha marara me ngā here hauwai. Ina koa, ko te whakapūhui o ngā matūriki cellulose ehara i te hanganga rārangi engari he hanganga maha-manga. I roto i te otinga, he maha ngā cellulose maha-manga e honoa ana hei hanga i tētahi hanganga whatunga ā-wāhi. Ko te piri o te hanganga, ko te nui ake o ngā kaha i waenga i ngā mekameka ngota ngota i roto i te otinga hua.
Hei whakaputa rere i roto i te otinga waimeha o ngā matū whakaputa cellulose, me hinga te kaha i waenga i ngā mekameka ngota, nō reira, me nui ake te kaha o te otinga he nui te polymerization hei whakaputa rere. Mō te ine matotoru, ko te kaha i runga i te otinga CMC ko te kaha ā-papatipu. I raro i te āhua o te kaha ā-papatipu pumau, he nui te kaha o te hanganga mekameka o te otinga CMC he nui te polymerization, ā, he puhoi te rere. Ko te rere puhoi e whakaata ana i te matotoru.
Ko te matotoru o te konutai carboxymethyl cellulose e pā ana ki te taumaha ngota, ā, kāore he pānga ki te nui o te whakakapinga. Ka nui ake te nui o te whakakapinga, ka nui ake te taumaha ngota, nā te mea he nui ake te taumaha ngota o te rōpū carboxymethyl kua whakakapia i te rōpū hydroxyl o mua.
Ko te tote konutai o te cellulose carboxymethyl ether, he cellulose ether anionic, he paura muka, he kirikiri rānei, he mā, he rite ki te miraka, he matotoru te 0.5-0.7 g/cm3, tata kore kakara, kore reka, ā, he waiora. He ngāwari ki te horapa ki roto i te wai hei hanga i tētahi otinga colloidal mārama, ā, kāore e rewa i roto i ngā whakarewa waro pērā i te etanoru. Ko te pH o te 1% otinga wai he 6.5 ki te 8.5. Ina neke atu i te 10 te pH, i te 5 rānei, ka tino heke te matotoru o te konutai carboxymethylcellulose, ā, ko te mahi pai rawa atu ina neke atu i te 7 te pH.
He pumau te pāmahana. Ka tere te piki o te matotoru i raro i te 20℃, ā, ka āta whakarerekē i te 45℃. Mā te whakamahana roa i runga ake i te 80℃ ka taea te whakakore i te āhua o te colloid, ā, ka tino whakaiti i te matotoru me te mahi. He ngāwari te wairewa ki te wai, ā, he mārama te otinga; he tino pumau i roto i te otinga kawakore, ā, he ngāwari te waikura i te aroaro o te waikawa. Ina 2-3 te uara pH, ka puta he putunga.
Wā tuku: Whiringa-ā-rangi-07-2022