Kenyelletso ea Cotton le Cellulose
Cotton, fiber ea tlhaho e tsoang semeleng sa k'hothone, haholo-holo e entsoe ka selulose. Cellulose, k'habohaedreite e rarahaneng, ke karolo e ka sehloohong ea marako a lisele tsa limela, e fanang ka tšehetso ea sebopeho. Ho ntša selulose e hloekileng ho tloha k'hothone ho kenyelletsa ho arola likhoele tsa selulose likarolong tse ling tsa semela sa k'hothone, tse kang lignin, hemicellulose le pectin.
Anatomy ea Semela sa K'hothone
Ho utloisisa sebopeho sa semela sa k'hothone ho bohlokoa bakeng sa ho ntšoa ha cellulose. Likhoele tsa k'hothone ke li-trichome tsa peo, tse hlahang liseleng tsa epidermal tsa cottonseed. Likhoele tsena li entsoe haholo ka cellulose, e nang le liprotheine tse nyane, boka ba boka le tsoekere. Likhoele tsa k'hothone li mela ka libotlolo, e leng li-capsules tse sireletsang tse koahelang peo.
Mokhoa oa ho ntša Cellulose
Kotulo: Ts'ebetso e qala ka ho kotula libotlolo tse seng li hōlile tsa k'hothone. Kotulo ea mechine ke mokhoa o tloaelehileng ka ho fetisisa, moo mechine e tlosang libotlolo limela.
Ginning: Ka mor'a ho kotuloa, k'hothone e qala ho fifala, moo peō e arohanang le likhoele. Mokhoa ona o kenyelletsa ho fetisa k'hothone ka mochini oa gin o tlosang peō likhoeleng.
Ho Hloekisa: Hang ha likhoele tsa k'hothone li se li arohane le peō, lia hloekisoa ho tlosa litšila tse kang litšila, makhasi le lintho tse ling tsa semela. Mohato ona o tiisa hore selulose e nkiloeng e na le bohloeki bo phahameng.
Carding: Carding ke ts'ebetso ea mochini e hokahanyang likhoele tsa k'hothone hore e be tepo e tšesaane. E tlosa litšila leha e le life tse setseng 'me e tsamaisana le likhoele ho itokisetsa ho tsoela pele.
Degumming: Lithapo tsa k'hothone li na le litšila tsa tlhaho tse kang boka, li-pectins le li-hemicellulose, tseo ka kakaretso li bitsoang "gum." Degumming e kenyelletsa ho phekola likhoele tsa k'hothone ka tharollo ea alkaline kapa li-enzyme ho tlosa litšila tsena.
Bleaching: Bleaching ke mohato oa boikhethelo empa hangata o sebelisoa ho tsoela pele ho hloekisa likhoele tsa cellulose le ho ntlafatsa bosoeu ba tsona. Ho ka sebelisoa mefuta e fapaneng ea bleaching agents tse kang hydrogen peroxide kapa chlorine derivatives ts'ebetsong ena.
Mercerization: Mercerization e kenyelletsa ho phekola likhoele tsa selulose ka tharollo ea alkali ea caustic, eo hangata e leng sodium hydroxide. Mokhoa ona o eketsa matla a likhoele, ho benya le ho hokahana ha dae, e leng ho etsang hore li tšoanelehe ho sebelisoa ka litsela tse sa tšoaneng.
Acid Hydrolysis: Maemong a mang, haholo molemong oa indasteri, asiti ea hydrolysis e ka sebelisoa ho tsoela pele ho arola selulose hore e be likaroloana tse nyane tse ts'oanang. Ts'ebetso ena e kenyelletsa ho alafa selulose ka asiti e hlapollang tlasa maemo a laoloang ho etsa hydrolyze litlamo tsa glycosidic, ho fana ka liketane tse khuts'oane tsa cellulose kapa cellulose nanocrystals.
Ho Hlatsoa le ho Omisa: Ka mor'a ho phekoloa ka lik'hemik'hale, likhoele tsa cellulose li hlatsuoa hantle ho tlosa lik'hemik'hale leha e le life tse setseng kapa litšila. Ka mor'a moo, likhoele li omisoa ho fihlela mongobo o lakatsehang.
Lisebelisoa tsa Pure Cellulose
Selulose e hloekileng e fumanoang k'hothone e fumana lits'ebetso ho pholletsa le liindasteri tse fapaneng:
Masela: Likhoele tsa cellulose li ohloa hore e be likhoele ebe li lohuoa hore e be masela a liaparo, masela a lapeng le a liindasteri.
Pampiri le Letlapa la Pampiri: Cellulose ke karolo ea mantlha ea lihlahisoa tsa pampiri, pampiri le li-cardboard.
Li-biofuel: Cellulose e ka fetoloa li-biofuel tse kang ethanol ka mekhoa e kang enzymatic hydrolysis le fermentation.
Liindasteri tsa Lijo le Litlhare: Lintho tse nkiloeng ho cellulose li sebelisoa e le li-thickeners, stabilizers le emulsifiers lijong le lihlahisoa tsa meriana.
Litlolo: Lintho tse tsoang ho cellulose li sebelisoa litlolo le lihlahisoa tsa tlhokomelo ea motho ka mong bakeng sa thepa ea tsona e teteaneng le e tsitsitseng.
Ho ntša cellulose e hloekileng ho tloha k'hothone ho kenyelletsa letoto la mekhoa ea mechine le ea lik'hemik'hale e reretsoeng ho arola likhoele tsa selulose ho tloha likarolong tse ling tsa semela sa k'hothone le ho li hloekisa. Ho utloisisa sebopeho sa semela sa k'hothone le ho sebelisa mekhoa e nepahetseng joalo ka ginning, degumming, bleaching, le mercerization ho bohlokoa bakeng sa ho fumana selulose ea boleng bo holimo. Selulose e hloekileng e fumanoang k'hothone e na le lisebelisoa tse fapaneng ho pholletsa le liindasteri, ho tloha ho masela le ho etsa pampiri ho ea ho biofuel le meriana ea meriana, e leng se etsang hore e be mohloli oa tlhaho o sebetsang ka mefuta-futa le oa bohlokoa.
Nako ea poso: Apr-25-2024