Lisebelisoa tse fapaneng tsa cellulose le li-derivatives tsa eona

Cellulose ke macromolecular polysaccharide e entsoeng ka tsoekere, e fumanehang 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 'nile ea sebelisoa haholo ka lebaka la thepa ea eona ea' mele le ea lik'hemik'hale, ha cellulose ea tlhaho ea polymer e na le mekhoa e fapaneng ea ts'ebetso ka mor'a ho sebetsa le ho fetoloa, e ka finyellang litlhoko tse fapaneng tsa liindasteri tse sa tšoaneng. 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 esters

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 ester li sebelisoa ho 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. Sebaka sa 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.

6. Libaka tse ling

Mathata le Litharollo ho Cellulose Kopo

Hona joale, cellulose e ntse e na le mefokolo ea tlhaho. Ka lebaka la litšoaneleho tsa sebopeho sa eona se kopantsoeng, selulose ha e khone ho qhibiliha 'me ho thata ho qhibiliha ka li-solvents tse tloaelehileng, tse fokotsang haholo nts'etsopele le tšebeliso ea lisebelisoa tsa cellulose. Tse kang ho solubility ho futsanehileng ho li-solvents tse tloaelehileng, khaello ea thermoplasticity, hydrophilicity e phahameng le khaello ea thepa ea antibacterial.

Ka hona, moralo le kaho ea lisebelisoa tse ncha tse entsoeng ka selulose ke motheo oa tšebeliso e nepahetseng ea selulose, 'me nts'etsopele ea theknoloji e hloekileng le e sebetsang ea ho qhibiliha ea cellulose ke tsela ea bohlokoa le tiisetso bakeng sa tšebeliso e nepahetseng ea selulose.