Mabapi le Cellulose
Cellulose ke macromolecular polysaccharide e entsoeng ka tsoekere. E fumaneha ka bongata limeleng tse tala le linthong tse phelang metsing. Ke thepa ea tlhaho e ajoang ka ho fetesisa ebile e kholo ka ho fetesisa ea tlhaho ea polymer. E na le biocompatibility e ntle, e ka nchafatsoang le ea Biodegradable le melemo e meng. Ka photosynthesis, limela li ka kopanya lithane tse limilione tse makholo tsa selulose selemo le selemo.
Melemo ea Kopo ea Cellulose
Selulose ea setso e fokolitse tšebeliso ea eona e pharaletseng ka lebaka la thepa ea eona ea 'mele le ea lik'hemik'hale, athe cellulose ea tlhaho ea polymer e na le lisebelisoa tse fapaneng tsa ts'ebetso ka mor'a ho sebetsa le ho fetoloa, tse ka fihlelang litlhoko tse fapaneng tsa liindasteri tse fapaneng. Tšebeliso e sebetsang ea lisebelisoa tse sebetsang tsa cellulose e se e le mekhoa ea tlhaho ea nts'etsopele le libaka tsa lipatlisiso tsa lisebelisoa tsa polymer.
Li-derivatives tsa cellulose li hlahisoa ke esterification kapa etherification ea lihlopha tsa hydroxyl ka li-polymer tsa cellulose tse nang le lik'hemik'hale tsa lik'hemik'hale. Ho ea ka litšoaneleho tsa sebopeho sa lihlahisoa tsa karabelo, li-derivatives tsa cellulose li ka aroloa ka mekhahlelo e meraro: cellulose ethers, cellulose esters, le cellulose ether ester.
1. Cellulose ether
Cellulose ether ke lentsoe le akaretsang bakeng sa letoto la li-derivatives tsa cellulose tse entsoeng ke karabelo ea alkali cellulose le etherifying agent tlasa maemo a itseng. Cellulose ether ke mofuta o tsoang ho cellulose o nang le mefuta e fapaneng, masimo a ts'ebeliso e pharaletseng, bophahamo bo boholo ba tlhahiso le boleng bo phahameng ba lipatlisiso. Tšebeliso ea eona e kenyelletsa likarolo tse ngata tse kang indasteri, temo, indasteri ea letsatsi le letsatsi ea lik'hemik'hale, ts'ireletso ea tikoloho, sefofane le tšireletso ea naha.
Li-cellulose ethers tse hlileng li sebelisoang khoebong ke: methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, cyanoethyl cellulose, hydroxypropyl cellulose le hydroxypropyl methylcellulose Cellulose joalo-joalo.
2. Cellulose ester
Li-cellulose ester li sebelisoa haholo libakeng tsa ts'ireletso ea naha, indasteri ea lik'hemik'hale, biology, meriana, kaho esita le sebaka sa sefofane.
Li-cellulose ester tse hlileng li sebelisoang khoebong ke: cellulose nitrate, cellulose acetate, cellulose acetate butyrate le cellulose xanthate.
3. Cellulose ether ester
Cellulose ether ester ke li-ester-ether tse tsoakiloeng tse tsoakiloeng.
Sebaka sa kopo:
1. Tšimo ea meriana
Li-cellulose ether le li-derivatives tsa ester li sebelisoa haholo meriana bakeng sa ho teteka, ho thusa, ho lokolloa ho tsitsitseng, ho lokolloa ho laoloang, ho etsa lifilimi le merero e meng.
2. Tšimo ea ho roala
Li-cellulose esters li bapala karolo ea bohlokoa haholo ts'ebetsong ea ho roala.Li-cellulose estersli sebelisoa ka li-binders, li-resin tse fetotsoeng kapa lisebelisoa tsa pele ho filimi ho fana ka liphahlo tse nang le thepa e ngata e babatsehang.
3. Tšimo ea theknoloji ea Membrane
Cellulose le lisebelisoa tse tsoang ho tse ling li na le melemo ea tlhahiso e kholo, ts'ebetso e tsitsitseng, le ho sebelisoa hape. Ka ho ikamahanya le lera-by-layer, mokhoa oa ho fetola karolo, theknoloji ea electrospinning le mekhoa e meng, lisebelisoa tsa membrane tse nang le ts'ebetso e ntle ea karohano li ka lokisoa. Lefapheng la theknoloji ea membrane e sebelisoa haholo.
4. Lekala la kaho
Li-cellulose ethers li na le matla a gel a phahameng a feto-fetohang 'me ka hona li na le thuso e le li-additives likarolong tsa kaho, tse kang li-additives tse entsoeng ka samente.
5. Sepakapaka, likoloi tse ncha tsa matla le lisebelisoa tsa elektronike tsa maemo a holimo
Lisebelisoa tsa optoelectronic tse thehiloeng ho cellulose li ka sebelisoa sebakeng sa sefofane, likoloi tse ncha tsa matla le lisebelisoa tsa elektronike tse phahameng.
Nako ea poso: Apr-25-2024