Ukuqina kwe-Cellulose Afers

Ukuqina kwe-Cellulose Afers kusho amandla abo okugcina izakhiwo zawo zamakhemikhali nezingokomzimba ngokuhamba kwesikhathi, ngaphansi kwezimo ezahlukahlukene zezemvelo kanye nemingcele yokucubungula. Nazi ezinye izinto ezithonya ukuzinza kwezithambekela ze-cellulose:

1. Ukuqina kwe-Hydrolytic: Abathengisi beCellulose bathambekele ku-hydrolysis, ikakhulukazi ngaphansi kwezimo ze-acidic noma ze-alkali. Ukuqina kwezithako ze-cellulose kuncike ngezinga labo lokufaka esikhundleni (DS) nesakhiwo samakhemikhali. AbakwaTS Cellulose abaphezulu bamelana kakhulu ne-hydrolysis ngokuqhathaniswa nokuzakhela abalingani be-DS. Ngokwengeziwe, ukuba khona kwamaqembu avikelayo anjenge-methyl, ama-ethyl, noma amaqembu we-hydroxypropyl angathuthukisa ukuqina kwe-hydrolytic.
2. Ukuqina kwezinga lokushisa Kodwa-ke, ukuvezwa isikhathi eside kumazinga okushisa aphezulu kungaholela ekunciphiseni, okuholela ekushintsheni kwesisindo, isisindo se-molecular, nezinye izakhiwo ezibonakalayo. Ukuqina okushisayo kwezindlebe ze-cellulose kuncike ezintweni ezifana nesakhiwo se-polymer, isisindo samangqamuzana, kanye nokuba khona kwama-ejenti okuzinza.
3. Ukuqina kwe-PH: Abathengisi beCellulose bazinze ngamanani ahlukahlukene we-PH, ngokuvamile phakathi kwe-PH 3 no-11. Noma kunjalo, izimo ze-PH eyeqisayo zingathinta ukuqina nokusebenza kwazo. Izimo ze-acidic noma ze-alkali zingaholela ku-hydrolysis noma ukucekelwa phansi kwe-cellulose izithathekisa, okuholela ekulahlekelweni yi-viscosity kanye nokuqina kwezakhiwo. Izakhi eziqukethe izithambisi ze-cellulose kufanele zakhiwe emazingeni e-PH ngaphakathi kobubanzi bokuqina kwe-polymer.
4. Ukuqina okuxakayo: Abathengisi beCellulose bathambekele ekunciphiseni oxidative lapho kuvezwa ku-oxygen noma ama-oxygen agents. Lokhu kungenzeka ngesikhathi sokucubungula, ukugcinwa, noma ukuvezwa emoyeni. Ama-antioxidants noma izitebele angangezwa e-cellulose ether ether ukuthuthukisa ukuqina kwe-oxidative futhi avikele ukonakaliswa.
5. Ukuqina okukhanyayo: Izimpi ze-cellulose zivame ukuzinza ukuvezwa ukukhanya, kepha ukuvezwa isikhathi eside ku-Ultraviolet (UV) imisebe kungaholela ekunciphiseni nasekudonseni. Abaqinisi abakhanyayo noma ama-UV abakhuphayo angafakwa ekwakhiweni okuqukethe i-cellulose kanye nokunciphisa ukuqina komkhiqizo.
6. Ukuhambisana nezinye izithako: Ukuqina kwezithako ze-cellulose kungathonywa ukusebenzisana nezinye izithako ekwakhiweni, njengama-solsunts, ama-surfactants, usawoti kanye nezithasiselo. Ukuhlolwa kokuvumelana kufanele kwenziwe ukuze kuqinisekiswe ukuthi izithambiso ze-cellulose zihlala zizinzile futhi azikho ngaphansi kokuhlukaniswa kwesigaba, imvula, noma eminye imiphumela engathandeki lapho ihlanganiswa nezinye izakhi.

Ukuqinisekisa ukuthi ukuqina kwezithambekela ze-cellulose kudinga ukukhethwa ngokucophelela kwezinto zokusetshenziswa okuluhlaza, ukusebenza kahle kwendlela, izimo ezifanele zokucubungula, kanye nokugcinwa okufanele. Abakhiqizi bavame ukwenza ukuhlolwa kokuqina ukuze bahlole ukusebenza kanye neshalofu-impilo ye-cellulose ether-ether-ether-ether-ether ngaphansi kwezimo ezahlukahlukene.