Ukulungiswa kwe-hydroxyythl seluplose

I-HydroxyEtheetheetheetheetheetheethl seluplose (hec) i-polymer engeyiyo i-ionic, i-poly-bibmer esuswe kwi-sellyulose, i-polymer yendalo efumaneka kwiindonga zeseli. It is widely used in various industries, including pharmaceuticals, cosmetics, paints, and adhesives, due to its excellent thickening, film-forming, and rheological properties. Ukulungiswa kwe-hydroxyyl seluplose kubandakanya ukuthotywa kwe-seluplose ye-sellylene oxide iphantsi kwemeko yeAlkaline. Le nkqubo inokwahlulwa ngamanyathelo amaqela amaninzi: Ukuhlanjululwa kweSeluplose, i-alkalition, i-ether, i-ethe thether, ihlazo, kunye nokomisa.

1. Ukucocwa kweSeluplose
Inyathelo lokuqala kulungiselelo lwe-hydroxyEsethl seluplose kukuhlanjululwa kweSellUlose, ngokuqhelekileyo kufumaneka ukusuka kwiinkuni zeWoods okanye i-Cotton. I-raw seluplose iqulethe ukungcola ezinje nge-lign, i-hemicellulose, kunye nezinye izinto ezinokususwa zisuswe ukufumana i-selsuvose ephezulu efanelekileyo ekuqinisekiseni i-selsulos esiphezulu.

Amanyathelo abandakanyekileyo:

Ukulungiswa koomatshini: Iseli eluhlaza okwenziwa ngoomatshini ukunciphisa ubungakanani bayo kwaye kwandise indawo yalo yomhlaba, iququzelela unyango olulandelayo lwemichiza.
Unyango lwekhemikhali: Iseli ithwalwa ngeekhemikhali ezinje ngeSodium hydroxide (i-nah) kunye nesodium sulfin kunye ne-sodium sulfin kunye ne-shodsose, ilandelwe ukususwa kunye nokugqobhoza i-supersulose.

2. I-alkali
I-selupese ehlanjululwe emva koko ifakwe kuyo iyenza isebenze ngempendulo ye-ether. Oku kubandakanya ukuphatha i-selsulose ngesisombululo se-sodium hydroxide.

Ukuphendula:
I-seluplose + naoh → Alkali Sellulose

Inkqubo:

I-selsulose inqunyanyisiwe emanzini, kwaye isodium hydroxide yongezwa. Uxinzelelo lwe-nah uqhele ukusukela nge-10-30%, kwaye impendulo yenziwa ngamaqondo obushushu phakathi kwama-20 ukuya kwengama-40 ° C.
Umxube ufunyenwe ukuqinisekisa ukufakwa kwe-alkali, okukhokelela ekumiselweni kwe-alkali sellulose. Esi siPhakalayo sisebenza ngakumbi kwi-Ethylene oxide, siququzelele inkqubo yokuthengiswa.

I-3. Isivumelwano
Inqanaba eliphambili kulungiselelo lwe-hydroxyteethyl seluplose ye-alkali seluplose ethylene oxide. Le ndlela yokuphendula yazisa amaqela e-hydroxyyl

Ukuphendula:
Alkali seluplose + ibhokisine oxide → hydroxyythy seluplose + nahh

Inkqubo:

I-Ebanonene Oxide yongezwa kwi-alkali seluplose, nokuba ye-batch okanye inkqubo eqhubekayo. Impendulo idla ngokuqhutywa kwi-autoclave okanye irekyuli yoxinzelelo.
Iimeko ezisabela, kubandakanya iqondo lobushushu (50-100 ° C) kunye noxinzelelo (1-5 i-ATM), zilawulwa ngononophelo ukuqinisekisa ukwabelwa okuphezulu kwamaqela e-hydroxethyl. Inqanaba lokufakwa endaweni (DS) kunye ne-molar

4. Ukungathathi cala
Emva kokuphendula kwe-Etheritition, umxube une-hydroxythyl seluplose kunye nendawo eguqukayo yeSodium hydroxide. Inqanaba elilandelayo alithathi cala, apho i-alkali engathathi hlangothi isebenzisa i-acid, ngokuqhelekileyo i-acid acid (i-ch3cooh) okanye i-hydrochloric acid (i-HCL).

Ukuphendula: I-nah + hcl → dolol + h2o

Inkqubo:

I-acid ihamba kancinci kumxube wokuphendula phantsi kweemeko ezilawulwayo ukuthintela ubushushu obugqithisileyo kwaye kuthintele ukonakaliswa kwe-hydroxyyl sellyulose.
Umxube ongathathi cala emva koko uthotywa uhlengahlengiso lwe-PH ukuqinisekisa ukuba lungaphantsi kwenqanaba eliyifunayo, ngokwesiqhelo kwi-Anehlolt PH (6-8).
5. Ukuhlamba
Ukulandela ukungathathi cala, imveliso kufuneka ihlanjwe isuswe ukususa iityuwa kunye nezinye iimveliso. Eli nyathelo kubalulekile ekufumaneni i-hydroxethyl ecocekileyo.

Inkqubo:

Umxube wokuphendula unxitywa ngamanzi, kwaye i-hydroxyythl seluplose yahlulwe ngokufihlakeleyo okanye i-centrifugation.
I-hydroxyythyl ye-hydroxyylyl ye-hydroxyyl ye-hydroxyyl ye-hydroxyythl ihlanjwe rhoqo ngamanzi e-deoerser ukususa iityiwa kunye nokungcola. Inkqubo yokuhlamba iyaqhubeka de i-hlamba lamanzi ifikelele ekuphumenisweni okuchaziweyo, ebonisa ukususwa kokungcola okunyibilikayo.
6. Ukomisa
Inyathelo lokugqibela kulungiselelo lwe-hydroxyEsethl seluplose yomile. Eli nyathelo lisusa amanzi agqithisileyo, ukuvelisa imveliso eyomileyo, eqingqiweyo efanelekileyo kwizicelo ezahlukeneyo.

Inkqubo:

I-hydroxythyl ye-hydroxethyl isasazeke kwiitreyi ezomisayo okanye zidluliselwe kwi-tennel eyomileyo. Iqondo lokushisa lilawulwa ngononophelo ukuphepha ukonakala kwe-shirmal, idla ngokusukela kwi-50-80 ° C.
Ngenye indlela, ukomisa ukoyikisa kunokusetyenziselwa ukomisa ngokukhawuleza kunye nokoma. Kwi-spray esomayo, i-qullroxythl ye-hydroxylyl seluplose i-amitod kwi-ufliple entle kwaye yomiswe kumjelo womoya oshushu, ophumela umgubo ococekileyo.
Imveliso eyomileyo yenziwa ngoko ubungakanani obufunekayo kwaye ipakishwe ukugcina nokusasazwa.
Ulawulo loMgangatho kunye nokuSebenza
Kuyo yonke inkqubo yokulungiselela, amanyathelo angqongqo olawulo olusemgangathweni amiliselwe ukuqinisekisa ukungqinelana kunye nomgangatho we-hydroxyyethyl sellie. Iiparamitha eziphambili ezinje ngo-Vecovity, isidanga sokufakwa endaweni, umxholo wokufuma, ubungakanani be-suricle zijongwa rhoqo.

Izicelo:

Amayeza: Isetyenziswe njengearhente yokuthambisa, i-binder, kunye ne-stabilizer ekwenzeni iitafile, ukunqunyanyiswa, kunye neoyile.
I-cosmetics: Inika i-viscosity kunye nokuThengisa kwiiMveliso ezinjengeKrimb, i-lotions, kunye ne-shampoos.
Iipeyinti kunye neengubo: izenzo njenge-tickener kunye ne-raheology modifier, ukuphucula iipropathi zesicelo kunye nokuzinza kweepeyinti.
Umzi-mveliso wokutya: Imisebenzi njenge-thi choner, i-stabilizer, kunye ne-mulsifier kwiimveliso ezahlukeneyo zokutya.

Ukulungiswa kwe-hydroxyEtheethyl seluplose kubandakanya uthotho lweenkqubo ezichazwe kakuhle zekhemikhali ezijolise ekuqulunqweni kwamaqela e-hydroxeyteythyl. Inqanaba ngalinye, ukusuka ekuhlambululeni seselutase ukomisa, kubalulekile ekumiseleni umgangatho kunye nokusebenza kwemveliso yokugqibela. I-HydroxyEteetheetheetheetheetheetheetheetheetheetheetheetheeths zeselfowuni zenze ukuba ibe sisithako esibalulekileyo kumashishini amaninzi, sibonisa ukubaluleka kokwenza izinto ezenziwayo zokufezekisa iimfuno ezithile zezicelo ezahlukeneyo.