Ntchito zosiyanasiyana za cellulose ndi zotumphukira zake

Cellulose ndi macromolecular polysaccharide yopangidwa ndi shuga, yomwe imakhala yochuluka muzomera zobiriwira ndi zamoyo zam'madzi. Ndizinthu zogawidwa kwambiri komanso zazikulu kwambiri zachilengedwe za polima m'chilengedwe. Ili ndi biocompatibility yabwino, zongowonjezwdwa ndi Biodegradable ndi ubwino zina. Kupyolera mu photosynthesis, zomera zimatha kupanga matani mamiliyoni mazana a cellulose chaka chilichonse.

Chiyembekezo Chogwiritsa Ntchito Ma cellulose

Ma cellulose achikhalidwe akhala akugwiritsidwa ntchito kwambiri chifukwa cha thupi ndi mankhwala ake, pomwe cellulose yachilengedwe ya polima imakhala ndi magwiridwe antchito osiyanasiyana pambuyo pokonza ndikusintha, zomwe zimatha kukwaniritsa zosowa zosiyanasiyana zamafakitale osiyanasiyana. Kugwiritsiridwa ntchito kwa zida zogwirira ntchito za cellulose kwakhala njira yachilengedwe yachitukuko komanso malo ofufuza azinthu za polima.

Ma cellulose amapangidwa ndi esterification kapena etherification yamagulu a hydroxyl mu ma polima a cellulose okhala ndi ma reagents amankhwala. Malinga ndi mawonekedwe a zinthu zomwe zimapangidwira, zotumphukira za cellulose zitha kugawidwa m'magulu atatu: ma cellulose ethers, cellulose esters, ndi cellulose ether esters.

1. Ma cellulose ether

Ma cellulose ether ndi liwu lodziwika bwino la zotumphukira za cellulose zomwe zimapangidwa ndi momwe alkali cellulose ndi etherifying agent nthawi zina. Cellulose ether ndi mtundu wa cellulose yochokera kumitundu yosiyanasiyana, malo ogwiritsira ntchito kwambiri, kuchuluka kwakukulu kopanga komanso phindu lalikulu la kafukufuku. Kugwiritsa ntchito kwake kumakhudza magawo ambiri monga mafakitale, ulimi, makampani opanga mankhwala tsiku ndi tsiku, kuteteza zachilengedwe, mlengalenga ndi chitetezo cha dziko.

Ma cellulose ethers omwe amagwiritsidwa ntchito pamalonda ndi awa: methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, cyanoethyl cellulose, hydroxypropyl cellulose ndi hydroxypropyl methylcellulose Cellulose etc.

2. Ma cellulose esters

Ma cellulose esters amagwiritsidwa ntchito kwambiri pankhani zachitetezo cha dziko, makampani opanga mankhwala, biology, mankhwala, zomangamanga komanso ngakhale zakuthambo.

Ma cellulose esters omwe amagwiritsidwa ntchito pamalonda ndi awa: cellulose nitrate, cellulose acetate, cellulose acetate butyrate ndi cellulose xanthate.
3. Ma cellulose ether ester

Ma cellulose ether ester ndi ma ester-ether osakanikirana.

Malo ogwiritsira ntchito

1. Munda wamankhwala

Ma cellulose ether ndi ester derivatives amagwiritsidwa ntchito kwambiri muzamankhwala pakukulitsa, excipient, kumasulidwa kosalekeza, kumasulidwa kolamuliridwa, kupanga filimu ndi zolinga zina.

2. Munda wokutira

Ma cellulose esters amagwira ntchito yofunika kwambiri pakupaka utoto. Ma cellulose esters amagwiritsidwa ntchito mu zomangira, ma resin osinthidwa kapena zinthu zopangira mafilimu kuti apereke zokutira ndi zinthu zambiri zabwino kwambiri.

3. Munda waukadaulo wa membrane

Ma cellulose ndi zotumphukira zimakhala ndi zabwino zake pakutulutsa kwakukulu, magwiridwe antchito okhazikika, komanso kubwezeretsedwanso. Kupyolera mu kusanjikiza-ndi-wosanjikiza pawokha, njira yosinthira gawo, ukadaulo wa electrospinning ndi njira zina, zida za nembanemba zokhala ndi magwiridwe antchito olekanitsa zitha kukonzedwa. M'munda wa nembanemba luso chimagwiritsidwa ntchito.

4. Munda womanga

Ma cellulose ethers ali ndi mphamvu ya gel osinthika kwambiri ndipo ndi yothandiza ngati zowonjezera pazomangamanga, monga zomatira zomata matailosi a simenti.

5. Azamlengalenga, magalimoto atsopano amphamvu ndi zipangizo zamakono zamakono

Ma cellulose-based functional optoelectronic zida zitha kugwiritsidwa ntchito muzamlengalenga, magalimoto amagetsi atsopano komanso zida zamagetsi zapamwamba.

6. Minda ina

Mavuto ndi Mayankho mu Cellulose Application

Pakali pano, cellulose akadali ndi zofooka zina zake. Chifukwa cha mawonekedwe ake ophatikizana, mapadi sangasungunuke ndipo ndizovuta kusungunula mu zosungunulira wamba, zomwe zimalepheretsa kwambiri chitukuko ndi kugwiritsa ntchito zida za cellulose. Monga kusungunuka kosauka muzosungunulira wamba, kusowa kwa thermoplasticity, high hydrophilicity ndi kusowa kwa antibacterial properties.

Choncho, kupanga ndi kumanga zipangizo zatsopano zochokera ku cellulose ndizo maziko ogwiritsira ntchito bwino ma cellulose, ndipo kupititsa patsogolo luso laukhondo komanso logwira mtima la kusungunuka kwa cellulose ndi njira yofunikira komanso chitsimikizo cha kugwiritsa ntchito bwino kwa cellulose.