Cov Khoom Siv Physicochemical Ntawm Cellulose Muaj Cov Neeg Muaj

Neeg muaj neeg ua haujlwmUa rau muaj ntau yam ntawm lub pob hluav taws xob uas ua rau lawv muaj ntau yam thiab muaj txiaj ntsig hauv ntau yam kev siv. Cov khoom tshwj xeeb tuaj yeem sib txawv raws li cov hom cellulose ether, cov qib hloov, thiab lwm yam. Nov yog qee qhov tseem ceeb ntawm lub cev ntawm cellulose muaj cov neeg muaj cai:

1. Solubility:
   • Dej solubility: cov neeg hais txog cellulose yog feem ntau dej-soluble, uas yog qhov tseem ceeb ntawm cov yam ntxwv uas ua rau lawv haum rau ntau cov ntawv thov. Lub solubility tuaj yeem sib txawv ntawm cov derivatives sib txawv.
2. Viscosity:
   • Thickening cov khoom: ib qho ntawm cov khoom tseem ceeb tshaj plaws ntawm cov neeg ua haujlwm hauv cellulose yog lawv lub peev xwm los ua kom cov kev daws teeb meem tuab. Lub viscosity ntawm kev daws yog pawg xws li cov degree ntawm hloov chaw, hnyav hnyav, thiab lub siab ether.
3. Zaj duab xis tsim:
   • Zaj duab xis-ua lub peev xwm: qee yam kws kho mob cellulose, nyob ntawm lawv hom thiab qib, muaj peev xwm ua cov yeeb yaj kiab. Cov cuab yeej no tau siv hauv cov ntawv thov xws li txheej ci, qhov twg ib zaj duab xis niaj hnub yog qhov tsim nyog.
4. Qib ntawm kev hloov pauv (DS):
   • Tshuaj Kho Mob Tshuaj: Qib ntawm kev hloov pauv tau hais txog qhov nruab nrab ntawm hydroxyethyl lossis hydroxypropyl lossis cov chav nyob hauv qab ntawm cov xov xwm cellulose. Nws cuam tshuam rau cov solubility, viscosity, thiab lwm yam khoom ntawm cellulose muaj neeg muaj kev hais ua.
5. Molecular hnyav:
   • Cawv ntawm viscosity: qhov hnyav molecular hnyav ntawm cov neeg hais lus hauv cellulose tuaj yeem cuam tshuam lawv viscosity thiab thickening cov khoom. Lub cev hnyav dua molecular hnyav cellulose cov neeg hais tias muaj kev nthuav tawm viscosity ntau dua hauv kev daws teeb meem.
6. Gelation:
   • Cov khoom siv gel-tsim: nyob ntawm seb thiab cov xwm txheej, cellulose cov neeg hais txog cella yuav ua rau cov khoom siv gelation. Qhov no tuaj yeem yog qhov tseem ceeb hauv cov ntawv thov uas zoo li cov gel-zoo li kev sib xws yog ntshaw, xws li nyob rau hauv qee yam kev ua tshuaj.
7. Cov haujlwm saum npoo:
   • Emulsification thiab stabilization: qee cov cellulose muaj cov yam ntxwv saum npoo av, ua rau lawv muaj emulsifizers zoo thiab stabilizers rau qhov uas emulsion stability yog qhov tseem ceeb.
8. Hygroscopicity:
   • Dej khaws cia: Cov neeg muaj kev hais ua cellulose tau paub txog lawv Hygroscopic Xwm, tso cai rau lawv kom lawv khaws dej. Cov cuab yeej no yog qhov tseem ceeb hauv cov ntawv thov xws li cov khoom siv tsim kho, qhov chaw khiav tawm yog qhov tsim nyog rau kev kho thiab ua haujlwm.
9. Phemitivity:
   • PHEEJ YEEM: PHIC rhiab heev ntawm cellulose muaj kev hais ua yog qhov tseem ceeb txiav txim siab hauv ntau yam kev siv. Qee cov kws sau ntawv cellulose tuaj yeem ua rau muaj kev hloov pauv hauv cov yam ntxwv raws PH ntawm kev daws teeb meem.
10. Adhesion:
    • Cov khoom nplaum nplaum: hauv cov ntawv thov zoo li cov nplaum thiab cov tshuaj pleev xim, cellulos kws hais ua haujlwm pab txhawb rau Adhesion. Lawv tuaj yeem txhim kho cov ntawv cog lus ntawm cov ntaub ntawv.
11. Rheological khoom:
    • Cawv ntawm cov neeg coj cwj pwm: cellulose neeg uas hais tau cuam tshuam ntau yam ntawm cov qauv ntawm cov qauv, cuam tshuam rau cov neeg ntws, viscosity, thiab shear-thuav tus cwj pwm.

Nkag siab txog cov khoom siv dag zog yog qhov tseem ceeb rau xaiv cov cellulose txoj cai ether rau cov ntawv thov tshwj xeeb. Cov tuam txhab cov ntaub ntawv kom ntxaws ntxaws qhia cov ntaub ntawv tshwj xeeb thiab cov ntaub ntawv cov ntaub ntawv uas qhia txog cov qib kev kawm sib txawv rau cov qib sib txawv thiab cov kev hais ua ke ntawm cellulose.