Mokhoa oa Tlhahlobo oa Xanthan Gum

1. Steko ea boibility

Nka sampole ea 1 g, butle-butle tšela ka beaker e nang le metsi a 100 ml, ka metsotso e 15, ela hloko hore u kenye mokelikeli ka metsing, butle-butle bula blender ho potlakisa 200 r / min, e ka qhibiliha ka ho feletseng ka mor'a metsotso e 25. ho latela mokhoa o ka holimo oa hore lisampole ha li qhalane ka har'a ethanol, acetone kapa ethyl ether.

2. Gel teko

Kenya 300 ml ea metsi ka bekeng ea 500 ml, preheat ho 80 ℃, bula blender ho potlakisa 200r/min,Ho sisinya le ho eketsa sampole e omeletseng ea 1.5g le 1.5g litsie beangum.ha motsoako ka tharollo, Tsoela pele ho hlohlelletsa ho feta metsotso e 30.(mocheso oa metsi ha o tlase ho 60 ℃ nakong ea ho sisinyeha). Khaotsa ho sisinyeha, ho pholisa bonyane lihora tse 2 ka mocheso oa kamore, ha mocheso o fokotseha ka 40 ℃, ho etsa ntho ea gel. Ho ea ka mokhoa o ka holimo ho lokisoa ha 1% ea tharollo ea mohlala ka ho fapana, u se ke ua eketsa tsie ea linaoa, ntle le sekhomaretsi.

3.viscosity

3.1 Tseletsa 

Brook field rotational viscometer viscosity meter kapa ts'ebetso e 'ngoe e ts'oanang.

3.2Test condition

a) Mofuta oa rotor: 3

b) Lebelo la rotor: 60 r / min

c) Ho lekanya mocheso:24 ℃ ~ 25 ℃

3.3 Mehato ea tlhahlobo

3.3.1 Lokisetsa tharollo e nang le 1% sampole le 1% potassium chloride.

a) Ka pampiri ea boima e hloekileng, e omeletseng ka ho latellana ho ea ka lisampole ho tloha ho 1.5 g le potassium chloride (e nepahetseng ho isa ho 0.01 g), e tsoakiloeng ka ho lekana;

b) Ho lekanya 300 ml ea metsi a hloekisitsoeng ka bekeng ea 400 ml

c) Nka beaker e ka holimo ka metsi ka tlas'a blender, bula blender, hlohlelletsa sampole ea motsoako butle-butle ka har'a mokelikeli o tsosang le pakeng tsa khalase ea metsi, 'me u qale nako, 800 r / min bakeng sa lihora tse 2, mocheso o tsosang 24 ℃ ~ 25 ℃;

d) Khaotsa ho sisinyeha, o ile a nka kopi, ka molamu o sisinyehang kapa lintho tse ling tse tšoanang le tharollo ea holimo le tlase makhetlo a 'maloa.

3.3.2 Boikemisetso

Nka tekanyo e nepahetseng ea 1% ea tharollo ea sampuli le 1% ea tharollo ea potassium chloride, kenya beaker ea mofuta oa 100 ml, boikemisetso ka maemo a behiloeng.

4.Litekanyetso tsa matla a ho kuta

4.1 Mokhoa oa ho etsa qeto

Ho latela mohato oa 3, ka ho latellana boleng ba viscosity ba lebelo la rotor ea 3 ho isa ho 6 r/min le 60 r/min,

4.2 Liphetho tsa ho bala

Maemo a matla a shear a baloang ho latela mofuta (1) :

N=η1/η2 ………………………(1)

Mofuta:

N - boleng ba ts'ebetso ea ho kuta;

η1 - viscosity ea boleng le lebelo la 6 r/min, yuniti ea centipoise (cP);

η2- viscosity ea boleng le lebelo la 60 r/min, yuniti ea centipoise (cP);

5.Ho lahleheloa ke boima ba 'mele

5.1 Molao-motheo

The sampole ho omisa boima kamehla tlas'a boemo ba mocheso itseng, bala lahleheloa ke thepa boleng.

5.2 Sesebelisoa

a) Botlolo ea boima ba khalase: bophara ba 60 ~ 70 mm, bo phahameng ka tlase ho 35 mm.

b) Motlakase o futhumatsang mocheso o sa khaotseng oa onto ea ho omisa

5.3 Mehato ea tlhahlobo

Beha botlolo ea boima ho 105 ℃ + 1 ℃ ontong e omileng ka metsotso e 30, boima bo sa feleng. botlolo ea boima,Botlolo ea boima ba thepa ebe u e kenya ka ontong,Bula kepisi le likatiba tsa botlolo ka ontong,O omisa ka tlasa 105 ℃ + 1 ℃ ka lihora tse 2,Bula onto,Koahela botlolo ea boima ka sampole hang-hang,Ho pholile ho isa mocheso oa kamore ka se omisang, boima ba kamehla, Ho ea ka ho fokotsa boleng le lisampole palo ea palo ea boima bo omileng.

5.4 Liphetho tsa ho bala

Karolo e omileng ea boima ba 'mele e baloang ka mofuta oa (2):

X=[(m1-m2)/m]×100………………………(2)

Mofuta:

X - karolo e omileng ea boima ba 'mele,%;

m1 -The quility ea boima botlolo botlolo le sampole pele omisa , yuniti ke gram (g);

m2 - Boleng ba botlolo ea boima le sampole ka mor'a ho omisa, yuniti ke gram (g);

m – boleng ba sampole, yuniti ke gram (g).