Iyini i-cellulosics?
Ama-Celluloses abhekisela eqenjini lezinto ezitholakala ku-cellulose, okuyi-polymer ephilayo eningi kakhulu eMhlabeni kanye nengxenye enkulu yezindonga zamaseli ezitshalo. I-Cellulose iyi-polysaccharide eqondile eyakhiwe amayunithi eglucose aphindaphindayo axhunywe ndawonye ngamabhondi e-β(1→4) e-glycosidic.
Izinto ze-Cellulozic zingahlukaniswa ngobubanzi zibe izigaba ezimbili: ezemvelo nezokwenziwa.
Amangqamuzana Emvelo:
- I-Wood Pulp: Itholakala emiculweni yokhuni, i-wood pulp iwumthombo oyinhloko we-cellulose esetshenziswa ezimbonini ezihlukahlukene, kuhlanganise nokwenza iphepha, izindwangu kanye nokwakhiwa.
- Ukotini: Imicu kakotini, etholakala ezinweleni zembewu yesitshalo sikakotini, ihlanganisa cishe yonke i-cellulose. Ukotini usetshenziswa kakhulu ekukhiqizeni izindwangu ngenxa yokuthamba kwawo, ukuphefumula kwawo, nokumunca kwawo.
- I-Hemp: Imicu ye-Hemp, ekhishwe eziqwini zesitshalo se-hemp, iqukethe i-cellulose futhi isetshenziselwa izindwangu, ukwenza amaphepha, kanye nezinto eziyinhlanganisela.
- I-bamboo: Imicu yoqalo, etholakala ku-pulp yezitshalo zoqalo, inothe nge-cellulose futhi isetshenziswa ekukhiqizeni izindwangu, kanye nasekukhiqizeni iphepha nezinto zokwakha.
Ama-Synthetic Celluloses:
- I-Cellulose Evuselelwe: Ikhiqizwe ngokuncibilika kwe-cellulose ku-solvent, njenge-cuprammonium hydroxide noma i-viscose, elandelwa ukukhishwa kubhavu lokuhlanganisa. Izinto ze-cellulose ezivuselelwe zifaka i-viscose rayon, i-lyocell (Tencel), ne-cellulose acetate.
- I-Cellulose Esters: Okuphuma ku-cellulose okushintshwe amakhemikhali okutholwe ukusabela kwe-esterification ngama-asidi ahlukahlukene. I-cellulose esters evamile ihlanganisa i-cellulose acetate, i-cellulose nitrate (i-celluloid), ne-cellulose acetate butyrate. Lezi zinto zithola ukusetshenziswa ekukhiqizweni kwefilimu, okokugqoka, namapulasitiki.
Ukusetshenziswa kwe-Celluloses:
- Izindwangu: Imicu yeCelulosic, yomibili yemvelo (isb., ukotini, i-hemp) kanye nevuselelwe (isb, i-viscose rayon, i-lyocell), isetshenziswa kakhulu ekukhiqizeni izindwangu zokugqoka, izindwangu zasendlini, nezindwangu zasembonini.
- Iphepha Nokupakishwa: I-wood pulp, etholakala emithonjeni ye-cellulosic, isebenza njengempahla yokuqala yokwenziwa kwamaphepha nezinto zokupakisha. Imicu ye-Cellulosic inikeza amandla, i-absorbency, kanye nokuphrinta emikhiqizweni yephepha.
- Izinto zokwakha: Impahla ye-cellulosic, njengokhuni noqalo, isetshenziswa ekwakheni izingxenye zesakhiwo (isb., ukwenza amapulangwe, i-plywood) kanye nokuqedwa kokuhlobisa (isb., ukhuni oluqinile, amaphaneli oqalo).
- Imikhiqizo Yokunakekela Umuntu: Izinto ezisekelwe ku-cellulose zisetshenziswa emikhiqizweni yokunakekelwa komuntu siqu, okuhlanganisa izinto zokusula, izicubu, nemikhiqizo yenhlanzeko emuncayo, ngenxa yokuthamba kwayo, amandla, kanye nokubola kwayo.
- Ukudla Nemithi: Okuphuma ku-cellulose, okufana ne-microcrystalline cellulose ne-carboxymethylcellulose, asetshenziswa njengezinto ezisizayo ekwenziweni kokudla nakwezemithi ukuze kuqiniswe, kuqiniswe, futhi kubophe izakhiwo.
Izinzuzo zeCellulosics:
- Ivuseleleka futhi I-Biodegradable: Izinto zokwakha ze-cellulosic zithathwe emithonjeni yezitshalo ezivuselelekayo futhi ziyakwazi ukubola, okuzenza zibe ezinye izindlela ezisimeme endaweni kuma-polymers okwenziwa.
- I-Versatility: Ama-Cellulosics abonisa izinhlobonhlobo zezakhiwo nokusebenza, okuvumela ukusetshenziswa okuhlukahlukene kuzo zonke izimboni, kusukela kwezindwangu kuya kwezokwelapha.
- Ukutholakala: I-Cellulose inala ngokwemvelo, nemithombo esukela kukhuni nokotini kuya ku-bamboo kanye ne-hemp, iqinisekisa ukutholakala okungaguquki nokuthembekile kokusetshenziswa kwezimboni.
- I-Biocompatibility: Izinto eziningi ze-cellulosic ziyasebenzisana futhi azinabo ubuthi, okuzenza zifanelekele ukusetshenziswa ekudleni, kwezokwelapha, nasezinhlelweni zezokwelapha.
Kafushane, ama-cellulosics ahlanganisa izinhlobonhlobo zezinto ezitholakala ku-cellulose, ezinikeza ukuguquguquka, ukusimama, kanye ne-biocompatibility kuzo zonke izinhlobo zezicelo ezimbonini ezifana nezindwangu, ukwenza amaphepha, ukwakha, ukunakekelwa komuntu siqu, nokunakekelwa kwezempilo.
Isikhathi sokuthumela: Feb-27-2024