Mayelana ne-Cellulose
I-Cellulose iyi-polysaccharide enkulu eyakhiwe yi-glucose. Itholakala ngobuningi ezitshalweni eziluhlaza nasezintweni eziphilayo zasolwandle. Iyinto esakazeka kabanzi futhi enkulu kunazo zonke zemvelo ye-polymer. Inokuvumelana okuhle kwezinto eziphilayo, ivuseleleka futhi i-Biodegradable kanye nezinye izinzuzo. Nge-photosynthesis, izitshalo zingakhiqiza amakhulu ezigidi zamathani e-cellulose minyaka yonke.
Amathemba Okusebenzisa I-Cellulose
I-cellulose yendabuko inciphise ukusetshenziswa kwayo kabanzi ngenxa yezakhiwo zayo zomzimba nezamakhemikhali, kuyilapho i-cellulose yezinto zemvelo ze-polymer inezici zokusebenza ezahlukene ngemva kokucutshungulwa nokuguqulwa, okungahlangabezana nezidingo ezahlukene zezimboni ezahlukene. Ukusetshenziswa okusebenzayo kwezinto zokusebenza ze-cellulose sekuyindlela yemvelo yokuthuthuka kanye nezindawo ezishisayo zocwaningo lwezinto ze-polymer.
Ama-derivative e-cellulose akhiqizwa ngokwenziwa kwe-esterification noma i-etherification yamaqembu e-hydroxyl kuma-polymer e-cellulose anama-reagent amakhemikhali. Ngokwezici zesakhiwo semikhiqizo yokusabela, ama-derivative e-cellulose angahlukaniswa ngezigaba ezintathu: ama-ether e-cellulose, ama-ester e-cellulose, kanye nama-ester e-cellulose e-ester.
1. I-ether ye-cellulose
I-Cellulose ether yigama elijwayelekile lochungechunge lwezinhlobo ze-cellulose ezidalwe ukusabela kwe-alkali cellulose kanye ne-etherifying agent ngaphansi kwezimo ezithile. I-Cellulose ether uhlobo lwe-cellulose derivative enezinhlobo ezahlukene, amasimu okusetshenziswa abanzi, umthamo omkhulu wokukhiqiza kanye nenani eliphezulu locwaningo. Ukusetshenziswa kwayo kuhilela amasimu amaningi njengezimboni, ezolimo, imboni yamakhemikhali yansuku zonke, ukuvikelwa kwemvelo, izindiza kanye nokuvikela izwe.
Ama-ether e-cellulose asetshenziswa kwezentengiselwano yilawa: i-methyl cellulose, i-carboxymethyl cellulose, i-ethyl cellulose, i-hydroxyethyl cellulose, i-cyanoethyl cellulose, i-hydroxypropyl cellulose kanye ne-hydroxypropyl methylcellulose Cellulose njll.
2. I-cellulose ester
Ama-cellulose esters asetshenziswa kabanzi emikhakheni yokuvikela izwe, imboni yamakhemikhali, i-biology, imithi, ukwakhiwa ngisho nasezindiza.
Ama-ester e-cellulose asetshenziswa kwezentengiselwano yilawa: i-cellulose nitrate, i-cellulose acetate, i-cellulose acetate butyrate kanye ne-cellulose xanthate.
3. I-ester ye-cellulose ether
Ama-ester e-cellulose ether ayizinto ezixubile eziphuma ku-ester-ether.
Insimu Yesicelo:
1. Insimu yezemithi
I-cellulose ether kanye ne-ester derivatives zisetshenziswa kabanzi kwezokwelapha ukuqina, ukwengeza, ukukhululwa okuqhubekayo, ukukhululwa okulawulwayo, ukwakheka kwefilimu kanye nezinye izinjongo.
2. Insimu yokumboza
Ama-ester e-cellulose adlala indima ebaluleke kakhulu ekusetshenzisweni kokumboza.Ama-ester e-cellulosezisetshenziswa kuma-binders, ama-resin aguquliwe noma izinto ezenziwe ngaphambi kwefilimu ukuze kuhlinzekwe ngezakhiwo eziningi ezinhle kakhulu.
3. Insimu yobuchwepheshe be-membrane
Izinto ze-cellulose kanye nezinto ezisuselwe kuzo zinezinzuzo zokukhipha okukhulu, ukusebenza okuzinzile, kanye nokuphinde kusetshenziswe. Ngokuzihlanganisa ngezinga ngalinye, indlela yokuguqula isigaba, ubuchwepheshe be-electrospinning kanye nezinye izindlela, izinto ze-membrane ezinokusebenza okuhle kakhulu kokuhlukaniswa zingalungiswa. Emkhakheni wobuchwepheshe be-membrane zisetshenziswa kabanzi.
4. Umkhakha wokwakha
Ama-ether e-cellulose anamandla aphezulu ejeli aguqulwa ngokushisa futhi ngenxa yalokho awusizo njengezithasiselo ezingxenyeni zokwakha, njengezithasiselo zokunamathela zamathayili ezisekelwe kusimende.
5. Izindiza, izimoto ezintsha zamandla kanye namadivayisi kagesi asezingeni eliphezulu
Izinto ze-optoelectronic ezisebenzayo ezisekelwe ku-cellulose zingasetshenziswa ezindiza, ezimotweni zamandla amasha kanye namadivayisi kagesi aphezulu.
Isikhathi sokuthunyelwe: Ephreli-25-2024