Xanthan Gum Test Indlela

1. Suvavanyo olubility

Thatha isampula ye-1 g, ngokuthe chu ugalele kwi-beaker equlethe i-100 ml yamanzi, imizuzu eyi-15, qaphela ukuba ufake i-bar bar emanzini, uvule ngokukhawuleza i-blender ukukhawulezisa i-200 r / min, inokuchithwa ngokupheleleyo emva kwemizuzu engama-25, ngokwendlela engasentla yokuba iisampuli azinyibiliki kwi-ethanol, i-acetone okanye i-ethyl ether.

2. Gel experiment

Yongeza i-300 ml yamanzi kwi-beaker engama-500 ml, ushushubeze ukuya kuma-80 ℃, vula i-blender ukukhawulezisa i-200r/min, ukuvuselela kunye nokongeza i-1.5g yesampulu eyomileyo kunye ne-1.5g yeenkumbi.xa umxube ube sisisombululo, Qhubeka uvuselela ngaphezu kwemizuzu engama-30.(ubushushu bamanzi abukho ngaphantsi kwama-60 ℃ ngexesha lokuvuselela). Yeka ukuvuselela, ukupholisa ubuncinane iiyure ezi-2 kwiqondo lokushisa, xa ubushushu buhla ngo-40 ℃, yenze into ye-gel. Ngokwendlela engentla ukuba ukulungiswa kwe-1% isisombululo sesampuli ngokungafaniyo, musa ukongeza i-gum yentethe yeembotyi, ngaphandle kweglue.

3.i-viscosity

3.1 Tisixhobo sakhe 

I-Brook field rotational viscometer viscosity meter okanye enye intsebenzo elinganayo.

3.2Timeko

a) Uhlobo lwerotha: 3

b) Isantya se-rotor: 60 r / min

c)Umlinganiselo wobushushu:24 ℃ ~ 25 ℃

3.3 Amanyathelo ohlalutyo

3.3.1 Ukulungiselela isisombululo esine-1% yesampuli kunye ne-1% ye-potassium chloride.

a) Ngephepha elicocekileyo, elomileyo ngokulandelelana ngokweesampuli ezivela kwi-1.5 g kunye ne-potassium chloride (echanekile ukuya kwi-0.01 g), ixutywe ngokulinganayo;

b)Ukulinganisa i-300 ml yamanzi adibeneyo kwi-beaker engama-400 ml

c)Thatha ibhekile engentla ngamanzi phantsi kweblender, vula iblender, uvuse iisampulu yomxube kancinane isitofu kulwelo olushukumisayo naphakathi kweglasi yamanzi, kwaye uqale ukubeka ixesha, 800 r/min kangangeeyure ezi-2, uvuselela ubushushu obungama-24 ℃ ~ 25 ℃;

d) Yeka ukuvuselela, thatha ikomityi, kunye ne-bar ye-stir okanye ezinye izinto ezifanayo kunye nesisombululo se-up-and-down amaxesha ambalwa.

3.3.2 Ukuzimisela

Thatha isixa esifanelekileyo se-1% yesisombululo sesampuli kunye ne-1% yesisombululo se-potassium chloride, faka uhlobo lwe-100 ml beaker, ukuzimisela kwiimeko ezimiselweyo.

4.Amaxabiso okuqina okucheba

4.1 Indlela yokumisela

Ngokwenyathelo lesi-3, ngokulandelanayo ixabiso le-viscosity ye-3 isantya se-rotor ukuya kwi-6 r / min kunye ne-60 r / min,

4.2 Iziphumo zokubala

Amaxabiso okuqina okucheba abalwe ngokodidi (1) :

N=η1/η2 ……………………… (1)

Uhlobo:

N - ixabiso lomsebenzi wokucheba;

η1 - i-viscosity yexabiso kunye nesantya se-6 r / min, iyunithi ye-centipoise (cP);

η2- i-viscosity yexabiso kunye nesantya se-60 r/min, iyunithi ye-centipoise (cP);

5.Ukuncipha kobunzima bomileyo

5.1 Umgaqo

Isampuli yokomisa kubunzima obuqhubekayo phantsi kwemeko yobushushu obuthile, bala umgangatho wezinto ezilahlekileyo.

5.2 Isixhobo

a) Iglasi yokulinganisa ubunzima bebhotile: ngaphakathi ngaphakathi 60 ~ 70 mm, ukuphakama ngaphantsi kwe-35 mm.

b) Ubushushu bombane obungaguqukiyo bomisa i-oveni

5.3 Amanyathelo ohlalutyo

Beka ibhotile yokulinganisa kwi-105 ℃ + 1 ℃ i-oven eyomileyo imizuzu engama-30, ubunzima obuqhubekayo. Ibhotile yokuwayisha,Ibhotile yesikali somthwalo uyibeke e-oveni,Vula ikepusi kunye neminqwazi yebhotile kwi-oveni,Yomisa ngaphantsi kwe-105 ℃ + 1 ℃ iiyure ezi-2,Vula i-oveni,Ggquma ibhotile yokulinganisa ngesampulu kwangoko,Ukupholisa kwiqondo lobushushu begumbi Isomisi, ubunzima obuthe rhoqo, Ngokokunciphisa umgangatho kunye nesampulu yobuninzi bokubala ubunzima obumileyo.

5.4 Iziphumo zokubala

Iqhezu lobunzima bobunzima obubalwa ngokodidi (2) :

X=[(m1-m2)/m]×100………………………(2)

Uhlobo:

X - iqhezu elinzima lobunzima, %;

m1 -Umgangatho webhotile yokulinganisa kunye nesampuli ngaphambi kokumisa, iyunithi yigram (g);

m2 - Umgangatho webhotile yokulinganisa kunye nesampuli emva kokumisa, iyunithi yigram (g);

m - umgangatho wesampuli, iyunithi yigram (g).