Sodium carboxymethylcellulose(SCMC) waa derivative cellulose biyo-milmi ah oo caadi ahaan loo isticmaalo warshado kala duwan, sida cuntada, daawooyinka, iyo waxyaalaha la isku qurxiyo, sidii dhumuc, xasiliye, iyo emulsifier. Habka wax soo saarka ee SCMC waxay ku lug leedahay dhowr tillaabo, oo ay ku jiraan alkalization, etherification, nadiifinta, iyo qalajinta.

1. Alkalisation

Talaabada ugu horeysa ee habka wax soo saarka ee SCMC waa alkalization of cellulose. Cellulose waxaa laga soo qaatay saxarka alwaax ama fiilooyinka suufka, kuwaas oo loo kala jajabiyey qaybo yaryar iyada oo loo marayo daaweyn farsamo iyo kiimiko oo taxane ah. cellulose-ka soo baxa ayaa markaa lagu daaweeyaa alkali, sida sodium hydroxide (NaOH) ama potassium hydroxide (KOH), si loo kordhiyo fal-celinta iyo milanka.

Habka alkalization sida caadiga ah waxay ku lug leedahay isku-darka cellulose-ka iyo xalalka NaOH ama KOH ee heerkulka sare leh iyo cadaadiska. Falcelinta u dhaxaysa cellulose iyo alkali waxay keentaa samaynta sodium ama potassium cellulose, taas oo aad u firfircoon oo si fudud loo beddeli karo.

2. Etherification

Tallaabada xigta ee habka wax soo saarka ee SCMC waa etherification ee sodium ama potassium cellulose. Habkani waxa uu ku lug leeyahay soo bandhigida kooxaha karboxymethyl (-CH2-COOH) ee lafta laf dhabarta cellulose iyada oo loo marayo falcelin leh chloroacetic acid (ClCH2COOH) ama sodium ama cusbada potassium.

Dareen-celinta etherification sida caadiga ah waxaa lagu fuliyaa isku dhafka biyaha-ethanol heerkul sarreeya iyo cadaadis, iyadoo lagu daro kicinta, sida sodium hydroxide ama sodium methylate. Dareen-celinta ayaa ah mid heer sare ah oo u baahan in si taxadar leh loo xakameeyo xaaladaha falcelinta si looga fogaado kulaylka iyo hoos u dhaca alaabta.

Heerka etherification, ama tirada karboxymethyl kooxaha halkii molecule cellulose, waxaa lagu xakameyn karaa iyadoo la hagaajinayo xaaladaha falcelinta, sida diiradda chloroacetic acid iyo waqtiga falcelinta. Heerarka sare ee etherification waxay keenaysaa milanka biyaha sare iyo dhumuc weynaanta natiijada SCMC.

3. Nadiifinta

Dareen-celinta etherification ka dib, SCMC-da ka soo baxda waxa badanaa lagu wasakheeyaa wasakh, sida cellulose aan falcelin lahayn, alkali, iyo chloroacetic acid. Tallaabada sifaynta waxay ku lug leedahay ka saarista wasakhdaas si loo helo badeecad SCMC saafi ah oo tayo sare leh.

Habka nadiifinta ayaa caadi ahaan ku lug leh dhowr tillaabo dhaqid iyo sifeyn iyadoo la isticmaalayo biyo ama xalal aqueous ah ethanol ama methanol. Natiijada SCMC ayaa markaas lagu dhex milmay aashito, sida hydrochloric acid ama acetic acid, si meesha looga saaro alkali kasta oo hadha oo lagu hagaajiyo pH ilaa xadka la rabo.

4. Qalajinta

Tallaabada ugu dambeysa ee habka wax soo saarka ee SCMC waa qalajinta alaabta la safeeyey. SCMC-da la qalajiyey ayaa caadi ahaan u qaabaysan budo cad ama granul waxaana loo sii farsamayn karaa qaabab kala duwan, sida xalal, jeel, ama filimaan.

Habka qalajinta waxaa lagu fulin karaa iyadoo la adeegsanayo farsamooyin kala duwan, sida qalajinta buufinta, qalajinta durbaanka, ama qalajinta vacuum, taas oo ku xidhan sifooyinka alaabta ee la doonayo iyo qiyaasta wax soo saarka. Habka qalajinta waa in si taxadar leh loo xakameeyaa si looga fogaado kulaylka xad-dhaafka ah, taas oo keeni karta hoos u dhaca alaabta ama midabka midabka.

Codsiyada Sodium Carboxymethylcellulose

Sodium carboxymethylcellulose (SCMC) waxaa si weyn loogu isticmaalaa warshadaha kala duwan, sida cuntada, daawooyinka, la isku qurxiyo, iyo daryeelka shakhsi ahaaneed, ay sabab u tahay milmayn biyaha aad u fiican, dhumucdiisuna, xasilin, iyo guryaha emulsifying.

Warshadaha cuntada

Warshadaha cuntada, SCMC waxa caadi ahaan loo isticmaalaa sidii dhumucsade, xasiliye, iyo emulsifier ahaan noocyo kala duwan oo cunto ah, sida alaabta la dubay, waxyaabaha caanaha laga sameeyo, suugo, labiska, iyo cabitaanada. SCMC waxa kale oo loo istcimaalaa beddelka dufanka ee cuntooyinka dufanku ku yar yahay iyo cuntooyinka kalooriga yar.