Hanyar Gwajin Xanthan Gum

1. Sgwajin olubility

Sai ki dauko samfurin 1g ki zuba a cikin bakar dake dauke da ruwa 100 ml, na tsawon mintuna 15, sai a kula ki zuba romon a cikin ruwan, a hankali ki bude blender ya yi gudun 200 r/min, za a iya narkar da shi gaba daya bayan minti 25. bisa ga hanyar da ke sama cewa samfurori ba su narke a cikin ethanol, acetone ko ethyl ether.

2. Gel gwaji

Ƙara ruwa 300 ml a cikin kwanon rufi na 500 ml, preheat zuwa 80 ℃, buɗe blender zuwa gudun 200r/min, Don motsawa da ƙara 1.5g busassun samfurin da 1.5g farar beangum.Lokacin da cakuda a cikin wani bayani, Ci gaba da motsawa fiye da minti 30.(zazzabi na ruwa ba ƙasa da 60 ℃ a lokacin motsawa) .Stop motsawa, sanyaya akalla 2 hours a dakin da zafin jiki, lokacin da yawan zafin jiki ya ragu a cikin 40 ℃, forming gel abu.A cewar hanyar da ke sama cewa shiri na 1% na samfurin bayani da bambanci, kar a ƙara ƙoshin wake, ba tare da manne ba.

3.danko

3.1 Tshi kayan aiki 

Mitar danko mai jujjuyawa filin Brook ko wani aikin daidai.

3.2Thalin da ake ciki

a) Nau'in rotor: 3

b) Gudun rotor: 60 r / min

c) Auna zafin jiki: 24 ℃ ~ 25 ℃

3.3 Matakan nazari

3.3.1 Shirya maganin da ke dauke da samfurin 1% da 1% potassium chloride.

a) Tare da takarda mai tsabta, busassun nauyi bisa ga samfurori daga 1.5 g da potassium chloride (daidai zuwa 0.01 g), gauraye daidai;

b) Auna 300 ml na distilled ruwa a cikin 400 ml beaker

c) Ɗauki beaker ɗin da ke sama da ruwa a ƙarƙashin blender, buɗe blender, motsa samfurin a hankali a hankali a cikin ruwa mai motsawa da tsakanin a cikin gilashin ruwa, kuma fara lokaci, 800 r / min na 2 hours, yana motsawa zazzabi 24 ℃ ~ 25 ℃;

d) Dakatar da motsa jiki, ɗauki kofin, tare da mashaya ko wasu abubuwa makamantansu na sama-da-kasa ƴan lokuta.

3.3.2 Ƙaddara

Dauki daidai adadin 1% samfurin bayani da 1% potassium chloride bayani, sanya a cikin nau'in 100 ml beaker, ƙaddara a cikin yanayin da aka tsara.

4.Ƙarfin ƙimar ƙarfi

4.1 Hanyar ƙaddara

Dangane da mataki 3, bi da bi da danko darajar 3 rotor gudun zuwa 6 r / min da 60 r / min,

4.2 Sakamakon lissafi

Ƙarfin ƙarfi da aka ƙididdige ta nau'in (1):

N=η1/η2 ………………………… (1)

Nau'in:

N - ƙimar aikin shear;

η1 - danko na darajar tare da gudun 6 r / min, naúrar don centipoise (cP);

η2- danko na darajar tare da gudun 60 r / min, naúrar centipoise (cP);

5.Bushewar nauyi

5.1 Ka'idar

Samfurin bushewa zuwa madaidaicin nauyi a ƙarƙashin yanayin takamaiman zazzabi, ƙididdige ƙimar ingancin kayan da aka rasa.

5.2 Kayan aiki

a) Gilashin auna kwalban: ciki diamita 60 ~ 70 mm, da high kasa na 35 mm.

b) Wutar lantarki akai-akai bushewar tanda

5.3 Matakan nazari

Sanya kwalban auna a 105 ℃ + 1 ℃ bushe tanda na minti 30, m nauyi. A cikin yin la'akari kwalban daidai daidai da 1.0 g zuwa 1.0 g samfurori (daidai zuwa 0.0001 g), Gina, motsi na gefe, Yi samfurin yana rarraba daidai a cikin kwalban awo, Kwalban ɗaukar nauyi da sanya shi a cikin tanda, Buɗe hula da iyakoki a cikin tanda, bushewa ƙasa da 105 ℃ + 1 ℃ na awa 2, Buɗe tanda, Rufe kwalban awo da samfurin nan da nan, sanyaya zuwa zafin jiki a cikin dakin. da bushewa, Constant nauyi, Bisa ga rage ingancin da samfurin yawa lissafin da bushe weightlessness.

5.4 Sakamakon lissafi

Busassun juzu'in rashin nauyi da aka ƙididdige su ta nau'in (2):

X=[(m1-m2)/m]×100……………………… (2)

Nau'in:

X - busassun juzu'i na rashin nauyi,%;

m1 - Matsakaicin kwalban aunawa da samfurin kafin bushewa, naúrar shine gram (g);

m2 - Matsakaicin nauyin kwalban auna da samfurin bayan bushewa, naúrar shine gram (g);

m - ingancin samfurin, naúrar shine gram (g).