E uiga i le Cellulose
O le cellulose o se polysaccharide macromolecular e fausia i le kulukose. O lo'o i ai i se aofaiga tele i la'au lanu meamata ma meaola o le gataifale. O le mea sili ona lautele tufatufaina ma sili ona tele mea faanatura polymer i le natura. E lelei le biocompatibility, faʻafouina ma Biodegradable ma isi mea lelei. E ala i le photosynthesis, e mafai e la'au ona fa'apipi'i le faitau selau miliona tone o cellulose i tausaga ta'itasi.
Fa'amoemoega Talosaga Cellulose
O le cellulose masani ua faʻatapulaʻaina lona faʻaogaina lautele ona o lona tino ma vailaʻau, ae o le cellulose meafaitino masani e iai mea faʻaoga eseese pe a maeʻa le gaosiga ma suiga, lea e mafai ona fetaui ma manaoga eseese o pisinisi eseese. O le fa'aogaina o mea e fa'atino ai le cellulose ua avea ma aga fa'alenatura o Atina'e ma nofoaga autu o su'esu'ega o mea polymer.
O mea e maua mai i le cellulose e maua mai i le esterification poʻo le etherification o vaega hydroxyl i polymers cellulose faʻatasi ai ma vailaʻau vailaʻau. E tusa ai ma uiga faʻatulagaina o mea faʻaalia, e mafai ona vaevaeina le cellulose derivatives i ni vaega se tolu: cellulose ethers, cellulose esters, ma cellulose ether esters.
1. Cellulose eter
O le cellulose ether o se faaupuga lautele mo se faasologa o mea e maua mai i le cellulose e faia i le tali atu o le cellulose alkali ma le etherifying agent i lalo o nisi tulaga. Cellulose ether o se ituaiga o cellulose derivative ma ituaiga eseese, fanua talosaga lautele, voluma tele gaosiga ma maualuga tau suʻesuʻega. O lona fa'aogaina e aofia ai le tele o matā'upu e pei o alamanuia, fa'ato'aga, pisinisi kemisi i aso ta'itasi, puipuiga o le si'osi'omaga, aerospace ma le puipuiga a le atunu'u.
O le cellulose ethers o loʻo faʻaaogaina faʻapisinisi o: methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, cyanoethyl cellulose, hydroxypropyl cellulose ma hydroxypropyl methylcellulose Cellulose ma isi.
2. Cellulose ester
Cellulose esters e masani ona faʻaaogaina i fanua o le puipuiga a le atunuʻu, vailaʻau vailaʻau, biology, vailaʻau, fausiaina ma e oʻo lava ile aerospace.
O esters cellulose o loʻo faʻaaogaina faʻapisinisi o: cellulose nitrate, cellulose acetate, cellulose acetate butyrate ma le cellulose xanthate.
3. Cellulose eter ester
Cellulose ether esters o ester-ether fa'afefiloi fa'afefiloi.
Avanoa talosaga:
1. Fale talavai
Cellulose ether ma ester derivatives o loʻo faʻaaogaina lautele i vailaʻau mo le mafiafia, faʻamalosia, faʻamalolo tumau, faʻasaʻo faʻatonutonu, faia o ata ma isi faʻamoemoega.
2. Fa'alavalava fanua
O le cellulose esters e faia se sao taua tele i le faʻapipiʻiina o talosaga.Cellulose esterso lo'o fa'aaogaina i mea fa'apipi'i, toe fa'aleleia po'o mea e fai muamua ata e tu'uina atu ai fa'alavalava ma le tele o mea lelei.
3. Membrane tekinolosi fanua
O mea e maua mai i le cellulose ma mea e maua mai ei ai le lelei o galuega tetele, fa'atinoga mautu, ma toe fa'aaogaina. E ala i le faʻapipiʻiina o le tagata lava ia i luga ole laiga, auala faʻafefeteina, eletise eletise ma isi auala, e mafai ona saunia mea o le membrane ma le lelei o le vavaeeseina. I le fanua o tekinolosi membrane faʻaaogaina lautele.
4. Vaega faufale
O le cellulose ethers e maualuga le malosi o le gel e mafai ona fa'afefeteina ma o lea e aoga e fai ma fa'aopoopoga i vaega faufale, e pei o fa'apipi'i fa'apipi'i sima.
5. Aerospace, taavale malosi fou ma masini eletise maualuga
E mafai ona fa'aogaina mea optoelectronic e fa'atatau i le cellulose i le vateatea, ta'avale malosi fou ma masini fa'aeletoroni maualuga.
Taimi meli: Apr-25-2024