Mabapi le Cellulose
Cellulose ke polysaccharide e kholo e entsoeng ka glucose. E fumaneha ka bongata bo boholo limela tse tala le lintho tse phelang metsing. Ke thepa ea polymer ea tlhaho e hasaneng haholo le e kholo ka ho fetisisa tlhahong. E na le ho lumellana ho hotle ha biochemical, e nchafatsoang hape e ka bola le melemo e meng. Ka photosynthesis, limela li ka hlahisa lithane tse makholo a limilione tsa cellulose selemo se seng le se seng.
Litebello tsa Tšebeliso ea Cellulose
Cellulose ea setso e fokolitse tšebeliso ea eona e pharaletseng ka lebaka la thepa ea eona ea 'mele le ea lik'hemik'hale, ha cellulose ea thepa ea polymer ea tlhaho e na le thepa e fapaneng ea ts'ebetso kamora ho sebetsoa le ho fetoloa, e ka fihlelang litlhoko tse fapaneng tsa liindasteri tse fapaneng. Tšebeliso e sebetsang ea thepa e sebetsang ea cellulose e fetohile mekhoa ea tlhaho ea nts'etsopele le libaka tse chesang tsa lipatlisiso tsa thepa ea polymer.
Di-derivative tsa cellulose di hlahiswa ka ho esterification kapa etherification ya dihlopha tsa hydroxyl ka hara di-polymer tsa cellulose tse nang le di-reagent tsa dikhemikhale. Ho ya ka dibopeho tsa sebopeho sa dihlahiswa tsa karabelo, di-derivative tsa cellulose di ka arolwa ka mekhahlelo e meraro: di-ether tsa cellulose, di-ester tsa cellulose, le di-ester tsa cellulose ether.
1. Ether ea selulose
Cellulose ether ke lentsoe le akaretsang bakeng sa letoto la di-derivative tsa cellulose tse bopilweng ke karabelo ya alkali cellulose le etherifying agent tlasa maemo a itseng. Cellulose ether ke mofuta wa derivative ya cellulose e nang le mefuta e fapaneng, masimo a mangata a tshebediso, bongata bo boholo ba tlhahiso le boleng bo hodimo ba dipatlisiso. Tshebediso ya yona e kenyeletsa masimo a mangata a kang indasteri, temo, indasteri ya dikhemikhale ya letsatsi le letsatsi, tshireletso ya tikoloho, sefofane le tshireletso ya naha.
Li-ether tsa cellulose tse sebelisoang khoebong ke: methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, cyanoethyl cellulose, hydroxypropyl cellulose le hydroxypropyl methylcellulose Cellulose jj.
2. Ester ea selulose
Li-ester tsa cellulose li sebelisoa haholo masimong a tšireletso ea naha, indasteri ea lik'hemik'hale, baeloji, bongaka, kaho esita le lifofaneng.
Li-ester tsa cellulose tse sebelisoang khoebong ke: cellulose nitrate, cellulose acetate, cellulose acetate butyrate le cellulose xanthate.
3. Ester ea ether ea selulose
Li-ester tsa ether tsa cellulose ke metsoako e tsoakiloeng ea ester-ether.
Tšimo ea kopo:
1. Tšimo ea meriana
Cellulose ether le di-derivatives tsa ester di sebediswa haholo meriana bakeng sa ho teteana, ho eketsa mokelikeli, ho lokolla ka nako e telele, ho lokolla ka taolo, ho etsa filimi le merero e meng.
2. Tšimo ea ho koahela
Li-ester tsa cellulose li bapala karolo ea bohlokoa haholo ts'ebelisong ea ho koahela.Li-ester tsa seluloseli sebelisoa ho li-binder, li-resin tse fetotsoeng kapa thepa ea pele ho filimi ho fana ka lipente tse nang le litšobotsi tse ngata tse ntle.
3. Tšimo ea theknoloji ea lera
Selulose le thepa e nkiloeng ho eona li na le melemo ea tlhahiso e kholo, ts'ebetso e tsitsitseng, le ho sebelisoa hape. Ka ho iketsa lera ka lera, mokhoa oa ho fetola mohato, theknoloji ea electrospinning le mekhoa e meng, thepa ea lera e nang le ts'ebetso e ntle ea karohano e ka lokisoa. Lefapheng la theknoloji ea lera e sebelisoa haholo.
4. Lekala la kaho
Li-ether tsa cellulose li na le matla a phahameng a gel a ka fetoloang mochesong 'me ka hona li na le thuso e le li-additives likarolong tsa kaho, tse kang li-additives tse khomaretsoeng ka samente tse khomaretsoeng.
5. Lifofane, likoloi tse ncha tsa eneji le lisebelisoa tsa elektroniki tsa maemo a holimo
Lisebelisoa tsa optoelectronic tse sebetsang tse thehiloeng ho cellulose li ka sebelisoa lifofaneng, likoloing tse ncha tsa matla le lisebelisoa tsa elektroniki tsa maemo a holimo.
Nako ea poso: Mmesa-25-2024