1. hygroscopicity
Ko te konutai Carboxymethylcellulose CMC he rite te whakauru wai ki etahi atu kapia wairewa-wai. Ka piki ake te toenga o te haumākū i te pikinga o te haumākū me te heke i te pikinga o te pāmahana. Ko te teitei ake o te DS, ko te nui ake o te haumuku o te hau, me te hua Ko te kaha ake o te whakauru wai. Mena ka whakatuwherahia te putea ka tukuna ki te hau me te nui o te haumākū nui mo te wa roa, ka taea e tona makuku te tae ki te 20%. Ina 15% te nui o te wai, kare e rereke te ahua o te paura o te hua. Ka tae ki te 20% te nui o te wai, ka whakaemi etahi matūriki ka piri ki a ratau, ka whakaiti i te rere o te paura. Ka piki ake te taumaha o te CMC i muri i te tangohanga o te makuku, no reira me tuu etahi hua karekau ki roto i nga ipu hau, ka penapena ranei ki te waahi maroke.
2. Carboxymethyl Cellulose Konutai CMC Whakarewa
Ko te Carboxymethylcellulose konutai CMC, pera i etahi atu polymers wairewa-wai, e whakaatu ana i te pupuhi i mua i te memeha. Ina he nui te nui o te carboxymethylcellulose konutai CMC otinga kia rite, ki te rite te tetere o ia matūriki, ka tere te rewa o te Hua. Mena ka tere te maka o te tauira ki roto i te wai ka piri ki te poraka, ka puta he "kanohi ika". Ko nga korero e whai ake nei e whakaatu ana i te tikanga o te whakakore tere i te CMC: kia ata maka te CMC ki roto i te wai i raro i te whakaoho ngawari; Ko te CMC kua marara-mua ki te whakarewa wai-wairewa (pērā i te waihā, glycerin), ka āta tāpirihia te wai i raro i te whakakorikoritanga; Mena me tapiri atu etahi atu paura paura ki te otinga, tuatahi whakaranuhia nga taapiri me te paura CMC, katahi ka tapirihia he wai kia memeha; mo te pai o nga kaiwhakamahi, ka whakarewahia nga hua inamata granule me te paura.
3. Rheology of Sodium Carboxymethyl Cellulose CMC Solution
Ko te konutai carboxymethyl cellulose CMC otinga he wai kore-Newtonian, e whakaatu ana i te iti o te pokey i te tere tere, ara, no te mea ko te uara pokey o te konutai carboxymethyl cellulose CMC e whakawhirinaki ana ki nga tikanga inenga, na reira ka whakamahia te "pokey kitea" hei whakaahua i tona taiao.
E whakaatuhia ana i runga i te hoahoa o te anau rheological: Ko te ahua o nga wai kore-Newtonian ko te hononga i waenga i te tere kutikuti (tere hurihuri i te viscometer) me te kaha kutikuti (torque of the viscometer) ehara i te hononga raina, engari he pihinga.
Carboxymethyl cellulose konutai CMC otinga he wai pseudoplastic. I te ine i te pokey, ko te tere o te tere hurihuri, ko te iti ake o te pokey ine, ko te mea e kiia nei ko te kutikuti.
4. Carboxymethyl Cellulose Konutai CMC Viscosity
1) Viscosity me te tohu toharite o te polymerization
Ko te pokey o te konutai carboxymethylcellulose CMC otinga e whakawhirinaki ana ki te tohu toharite o te polymerization o nga mekameka cellulose e hanga ana i te anga. He hononga tata i waenga i te pokey me te tohu toharite o te polymerization.
2) Viscosity me te kukū
Te hononga i waenga i te pokey me te kukū o etahi momo konutai carboxymethylcellulose CMC. Ko te pokey me te kukū he āhua taurite. Ko te konutai carboxymethyl cellulose CMC otinga ka taea te whakaputa i te pokey tino teitei i te iti o te kukū, na tenei ahuatanga ka taea te whakamahi CMC hei peera pai i roto i te tono.
3) Viscosity me te pāmahana
Ko te pokey o te carboxymethylcellulose konutai CMC wairewa wai ka heke ki te piki o te pāmahana, ahakoa te momo me te kukū, he rite tonu te ia o te pokey otinga me te ānau hononga pāmahana.
4) Viscosity me te pH
Ina he 7-9 te pH, ka eke te pokey o te otinga CMC ki tona teitei me te tino pumau. Ko te pokey o te konutai carboxymethylpyramid e kore e tino rerekee i roto i te awhe pH o 5-10. He tere ake te rewa o te CMC i roto i nga ahuatanga kawakore i nga ahuatanga koretake. A, no te pH> 10, ka meinga CMC ki te whakaheke me te whakaiti i te pokey. Ina whakaurua he waikawa ki te otinga CMC, ka heke te pumau o te otinga na te mea ka whakakapi te H+ i roto i te otinga i te Na+ i te mekameka ngota. I roto i te wairewa waikawa kaha (pH=3.0-4.0) ka timata te ahua o te hau-sol, ka whakaheke i te pokey o te otinga. A, no te pH<3.0, ka timata te CMC ki te kore e rewa ki te wai ka hanga te waikawa CMC.
Ko te CMC me te nui o te whakakapinga he kaha ake te kaha o te waikawa me te kawakore i te CMC me te DS iti; Ko te CMC me te iti o te pokey he kaha ake te kaha o te waikawa me te parenga kawakore i te CMC me te pokey teitei.
Te wa tuku: Hanuere-28-2023