I-CMC isebenzisa kwi-Detergent Industry

I-Carboxymethyl cellulose (ekwaziwa ngokuba yi-CMC kunye ne-sodium carboxymethyl cellulose) inokuchazwa njengepolymer e-anionic enyibilikayo emanzini, eveliswe kwi-cellulose yendalo ngokusebenzisa i-etherification, ithatha indawo yeqela le-hydroxyl kunye neqela le-carboxymethyl kwi-cellulose I-cellulose i-carboxymethyl cellulose isetyenziswa njenge-binder, i-thickener, i-ejenti yokumisa kunye nesifaki kwizicelo ezahlukeneyo.

Umgaqo wokusabela

Ezona mpendulo zekhemikhali ze-CMC kukusabela kwe-alkalization ye-cellulose kunye ne-alkali ukwenza i-alkali cellulose kunye ne-etherification reaction ye-alkali cellulose kunye ne-monochloroacetic acid.

Inyathelo 1: Ukwenziwa kweAlkalization: [C6H7O2(OH) 3]n + nNaOH→[C6H7O2(OH) 2ONa ]n + nH2O

Inyathelo lesi-2: I-Etherification: [C6H7O2(OH) 2ONa ]n + nClCH2COONA→[C6H7O2(OH) 2OCH2COONA ]n + nNaCl

Ubume bekhemikhali

I-cellulose derivative ene-carboxymethyl substituent ilungiswa ngokuphatha i-cellulose kunye ne-sodium hydroxide ukwenza i-alkali cellulose, kwaye emva koko iphendule nge-monochloroacetic acid. Iyunithi ye-glucose eyenza i-cellulose inamaqela ama-3 e-hydroxyl anokutshintshwa, ngoko ke iimveliso ezinamaqondo ahlukeneyo okutshintshwa zingafumaneka. Ngokomyinge, i-1mmol ye-carboxymethyl yaziswa nge-1g yobunzima obomileyo. Ayinyibiliki emanzini kwaye idilute iasidi, kodwa inokudumba kwaye isetyenziswe kwi-ion exchange chromatography. I-pKa ye-carboxymethyl malunga ne-4 emanzini acocekileyo kwaye malunga ne-3.5 kwi-0.5mol / L NaCl. I-acidic cation exchanger ebuthathaka kwaye idla ngokusetyenziselwa ukwahlula iiprotheni ezingathathi hlangothi kunye nesiseko kwi-pH 4 okanye ngaphezulu. Abo bangaphezu kwe-40% yamaqela e-hydroxyl athathelwe indawo yi-carboxymethyl inokuchithwa emanzini ukuze yenze isisombululo esizinzileyo se-colloidal high-viscosity.

Iimpawu zemveliso yeisicoci ibakala CMC

Emva kokongezwa kwi-detergent, ukuhambelana kuphezulu, kucacile, kwaye akubuyeli kumncinci;

Iyakwazi ukuqina ngokufanelekileyo kwaye izinzile ukubunjwa kwe-detergent yamanzi;

Ukongeza umgubo wokuvasa kunye nesicoci samanzi kunokuthintela ubumdaka obuhlanjiweyo ukuba bungazinzi kwilaphu kwakhona. Ukongeza i-0.5-2% kwi-detergent yokwenziwa inokufikelela kwiziphumo ezanelisayo;

I-CMC isebenzisa kwi-Detergent Industry, IkakhuluJongisisa i i-emulsification kunye neempawu ezikhuselayo ze-colloid ze-CMC. I-anion eveliswa ngexesha lokuhlamba inokwenza ngexesha elifanayo ubuso bokuhlamba kunye neengqungquthela zokungcola zihlawuliswe kakubi, ukwenzela ukuba iinqununu zokungcola zibe nokuhlukana kwesigaba kwisigaba samanzi kwaye zibe nefuthe elifanayo kumphezulu wokuhlamba okuqinileyo. Ukugxothwa, kuthintela ukungcola ukuba kuphinde kufakwe kwindawo yokuhlamba impahla, kunokugcina ubumhlophe bamalaphu amhlophe, kunye nemibala eqaqambileyo yamalaphu anemibala.

Umsebenzi kwi CMCisicoci

1. Ukuqina, ukusabalalisa kunye nokufaka i-emulsifying, inokufunxa amabala anamafutha ajikeleze amabala ukugubungela amabala anamafutha, ukwenzela ukuba amabala anamafutha anqunyanyiswe kwaye asasazwe emanzini, kwaye enze ifilimu ye-hydrophilic ebusweni bezinto ezihlanjiweyo, ngaloo ndlela ithintele i-oyile. amabala anamafutha ukusuka ekunxibelelaneni ngokuthe ngqo nezinto ezihlanjiweyo .
2. Iqondo eliphezulu lokuthatha indawo kunye nokufana, ukungafihli kakuhle;
3. I-dispersibility efanelekileyo emanzini kunye nokuchasana kakuhle kwe-resorption;
4. I-viscosity ephezulu kunye nokuzinza okulungileyo.