Sodium carboxymethyl selulose CMC imiterere yumubiri nubumara

1. hygroscopicity
Carboxymethylcellulose sodium ya CMC ifite amazi ameze nkayandi mavuta ashonga. Ubushuhe bwabwo bwiyongera hamwe no kwiyongera kwubushyuhe kandi bikagabanuka nubwiyongere bwubushyuhe. Iyo DS iri hejuru, nubushuhe bwikirere ninshi, nibicuruzwa bikomera Amazi. Niba umufuka ufunguye ugashyirwa mu kirere gifite ubuhehere bwinshi mu gihe runaka, ubuhehere bwabwo bushobora kugera kuri 20%. Iyo amazi arimo 15%, ifu yibicuruzwa ntabwo izahinduka. Iyo amazi arimo agera kuri 20%, uduce tumwe na tumwe tuzegeranya kandi tugumane, bigabanya umuvuduko w'ifu. CMC izongera ibiro nyuma yo gukuramo ubuhehere, bityo ibicuruzwa bimwe bipakiye bigomba gushyirwa mubikoresho byumuyaga cyangwa bikabikwa ahantu humye.

2. Carboxymethyl Cellulose Sodium CMC Yashonze
Carboxymethylcellulose sodium ya CMC, kimwe nizindi polymers zishonga amazi, zigaragaza kubyimba mbere yo gushonga. Iyo umubare munini wa carboxymethylcellulose sodium ya CMC igomba gutegurwa, niba buri gice cyabyimbye kimwe, noneho ibicuruzwa bishonga vuba. Niba icyitegererezo kijugunywe mumazi vuba kandi kigakomeza kumutwe, hazakorwa "ijisho ryamafi". Ibikurikira bisobanura uburyo bwo gushonga vuba CMC: shyira buhoro buhoro CMC mumazi munsi yikigereranyo; CMC yabanje gutatanyirizwa hamwe n'amazi ashonga (nka Ethanol, glycerine), hanyuma akongeramo buhoro buhoro amazi munsi yikigereranyo; Niba izindi nyongeramusaruro zikeneye kongerwaho igisubizo, banza uvange inyongeramusaruro nifu ya CMC, hanyuma ushyiremo amazi kugirango ushonga; kugirango byorohereze abakoresha, granule ihita nifu yifu yibicuruzwa byatangijwe.

3. Rheologiya ya Sodium Carboxymethyl Cellulose CMC Igisubizo
Sodium carboxymethyl selulose CMC igisubizo ni amazi atari Newtonian, yerekana ubukonje buke kumuvuduko mwinshi, nukuvuga, kubera ko agaciro ka viscosity ya sodium carboxymethyl selulose CMC biterwa nuburyo bwo gupimwa, bityo "bigaragara ko viscosity" ikoreshwa mugusobanura ibyayo kamere.

Yerekanwa ku gishushanyo mbonera cya rheologiya: Imiterere y’amazi atari Newtonian ni uko isano iri hagati yikigereranyo cyogosha (umuvuduko wo kuzunguruka kuri viscometer) nimbaraga zogosha (torque ya viscometer) ntabwo ari umurongo ugaragara, ahubwo ni umurongo.

Carboxymethyl selulose sodium ya CMC igisubizo ni pseudoplastique. Iyo upimye ububobere, byihuse umuvuduko wo kuzunguruka, niko ntoya yapimye ubukonje, aribwo bita ingaruka zo kunanura.

4. Carboxymethyl Cellulose Sodium ya CMC Viscosity
1) Viscosity hamwe nimpuzandengo ya polymerisation
Ubukonje bwa sodium carboxymethylcellulose CMC igisubizo ahanini biterwa nurwego mpuzandengo rwa polymerisation yiminyururu ya selile ikora urwego. Hariho umurongo ugereranije ugereranije hagati yubukonje nimpuzandengo ya polymerisation.
2) Kwishishanya no kwibanda
Isano iri hagati yubukonje nubwitonzi bwubwoko bumwe na bumwe bwa sodium carboxymethylcellulose CMC. Viscosity hamwe no kwibanda hamwe ni logarithmic. Sodium carboxymethyl selulose CMC igisubizo irashobora gutanga ubukonje bwinshi cyane mukutitonda kwinshi, ibi biranga bituma CMC ishobora gukoreshwa nkibyimbye byiza mubisabwa.
3) Ubushuhe n'ubushuhe
Ubukonje bwa carboxymethylcellulose sodium ya CMC igisubizo cyamazi kigabanuka hamwe no kwiyongera kwubushyuhe, hatitawe kubwoko no kwibumbira hamwe, inzira yumuti wijimye hamwe nubusabane bwubushuhe burasa.
4) Viscosity na pH
Iyo pH ari 7-9, ubwiza bwumuti wa CMC bugera kurwego rwo hejuru kandi burahagaze neza. Ubukonje bwa sodium carboxymethylpyramid ntabwo bizahinduka cyane murwego rwa pH ya 5-10. CMC ishonga vuba mubihe bya alkaline kuruta mubihe bidafite aho bibogamiye. Iyo pH> 10, bizatera CMC gutesha agaciro no kugabanya ububobere. Iyo aside yongewe kumuti wa CMC, umutimanama wigisubizo uragabanuka kuko H + mubisubizo isimbuza Na + kumurongo wa molekile. Mubisubizo bikomeye bya acide (pH = 3.0-4.0) igice-sol gitangira gukora, kigabanya ubukonje bwumuti. Iyo pH <3.0, CMC itangiye gushonga rwose mumazi ikora aside ya CMC.

CMC ifite urwego rwo hejuru rwo gusimbuza irakomeye muri aside na alkali irwanya CMC ifite DS nkeya; CMC ifite ubukonje buke irakomera muri aside na alkali irwanya CMC ifite ububobere bwinshi.