Cellulose eds ndi gulu losangalatsa lazinthu zomwe zimachokera ku cellulose, imodzi mwazomwe anthu okhala padziko lapansi pano. Zida zosiyanasiyanazi zimapeza ntchito m'mafakitale osiyanasiyana, kuphatikizapo zamankhwala, chakudya, zodzola, zomangamanga, ndi zikwangwani, chifukwa cha zinthu zawo zapadera.
1. Kapangidwe kake ndi katundu wa cellulose:
Cellulose ndi polysacar yopangidwa ndi maunyolo atali mayunitsi a shuga omwe amalumikizidwa pamodzi ndi β (1 → 4) zomangira. Mayunitsi obwereza shuga amapereka cellulose yokhala ndi mzere komanso wokhazikika. Izi zojambulajambula izi zimapangitsa kuti maunyolo a hydrogen pakati pa maunyolo oyandikana bwino, omwe amathandizira makina abwino kwambiri a cellulose.
Magulu a hydroxyl (-Oh) omwe alipo mu cellulose utoto umapangitsa kuti ikhale hydrophilic kwambiri, kulola kuti imeke ndikusunga madzi ambiri. Komabe, cellulose imawonetsera osauka molakwika m'malo okhazikika chifukwa cha ma networmolecular hydrogen.
2. Kuyambitsa kwa cellose et:
Cellulose ndi zochokera ku cellulose zomwe ena mwa magulu a hydroxyl amalozereka ndi magulu a Ether (-Or), komwe r amayimira mitundu yosiyanasiyana ya organictic. Zosintha izi zimasintha katundu wa cellulose, ndikupangitsa kuti ikhale yosungunuka m'madzi ndi okhazikika pomwe amasungunuka kwinanso kwazinthu zina, monga biodegradiility komanso osadandaula.
3. Kaphatikizidwe ka cellulose et:
Kaphatikizo wa cellulose etrase kumaphatikizapo kusinthika kwa ma cellulose ma hydroxyl magulu okhala pansi pazomwe amayendetsedwa. Ma reagents wamba omwe amagwiritsidwa ntchito ku Etherthetion amaphatikiza alkyl halides, alkylene oxides, ndi alkyl halides. Zomwe zimachitika monga kutentha, zosungunulira, zotupa, ndi zothandizira kusewera gawo lofunikira posankha kuchuluka kwa malo olowa m'malo mwake.
4. Mitundu ya cellulose et:
Cellulose eders amatha kulembedwa malinga ndi mtundu wa magulu ophatikizidwa ndi magulu a hydroxyl. Ma cellulose omwe amagwiritsidwa ntchito kwambiri amagwiritsidwa ntchito monga:
Methyl cellulose (MC)
Hydroxypropyl cellulose (hpc)
Hydroxyethyl cellulose (hec)
Ethyl hydroththyl cellulose (Ehec)
Carboxymethyl cellulose (cmc)
Mtundu uliwonse wa ether ether ether ether ether enterties ndi malo apadera ndipo ndioyenera mapulogalamu apadera kutengera kapangidwe kake ndi kuchuluka kwake.
5. katundu ndi ntchito za cellose et:
Cellulose eders amapereka zinthu zingapo zopindulitsa zomwe zimapangitsa kuti zizikhala zofunikira m'mafakitale osiyanasiyana:
Kukula ndi kukhazikika: cellulose eders zimagwiritsidwa ntchito kwambiri ngati okhazikika ndi okhazikika pazakudya, mankhwala ogulitsa, komanso zinthu zosamalira pandekha. Amasintha mawilo ndi zachinyengo za njira ndi emulsions, kulimbikitsa kukhazikika kwazinthu ndi kapangidwe kake.
Mapangidwe a filimu: Cellulose yokhazikika imatha kupanga mafilimu osinthika komanso owoneka bwino akamamwa madzi kapena okhazikika. Mafilimu amenewa amapeza mapulogalamu pazokutira, kunyamula, ndi njira zoperekera mankhwala osokoneza bongo.
Kusungidwa kwamadzi: hydrophilic chilengedwe cha cellulose eder amawapangitsa kuti athe kuyamwa, kuwapangitsa kukhala owonjezera owonjezera pomanga monga simenti, mankhwala a gypsum. Amagwira ntchito molimbika, kutsatira, ndi kulimba kwa zinthuzi.
Kutumiza Mankhwala: cellulose yopangidwa kumagwiritsidwa ntchito popanga mankhwala monga momwe timafunira kuti muchepetse kugwiritsa ntchito mankhwala osokoneza bongo, kusintha bioavailability, ndi maski osasangalatsa kapena fungo labwino. Amagwiritsidwa ntchito m'mapiritsi, makapisozi, mafuta, komanso kuyimidwe.
Kusintha kwapamtunda: cellulose yokhazikika imatha kusinthidwa kuti ipangitse magulu ogwira ntchito omwe amapereka katundu wapadera ngati antimicbicrobial ntchito, flame yoletsedwa. Cellulose yosinthidwa iyi imapeza ntchito zokutira zapadera, zolembedwa, ndi zida za biomedale.
6. Mphamvu ya chilengedwe ndi chilimbikitso:
Cellulose amachokera ku zinthu zokonzanso zamphamvu monga nkhuni, thonje, kapena ulusi wina, kuwapangitsa kukhala kokhazikika. Kuphatikiza apo, ali biodegrable komanso osalongosola, poizoni wochepa thupi poyerekeza ndi oyipitsa ma polima. Komabe, kapangidwe ka cellulose ede kumakhudza zochitika zamankhwala zomwe zimafunikira kasamalidwe kasamalidwe kuti achepetse kugwiritsa ntchito magetsi ndi mphamvu.
7.. Malingaliro amtsogolo:
Kufunikira kwa cellulose etter kumayembekezeredwa kupitiriza kukula chifukwa cha zinthu zawo zosiyanasiyana komanso kukhala ochezeka. Kuyesetsa kopitilira kufufuza kumayang'ana kwambiri kukulitsa cellose yotukuka kwa cellulose yolimbikitsa magwiridwe antchito, kusinthasintha kosintha, komanso zinthu zogwirizana ndi zomwe mungagwiritse ntchito. Kuphatikiza apo, kuphatikiza kwa cellulose etramies monga 3Ding, Nanocomtalites, ndipo zida za biomedical zimapereka lonjezo kuti zikukula bwino kwambiri.
Cellulose eya imayimira kalasi yofunika yopanga zinthu zosiyanasiyana zokhala ndi mafakitale osiyanasiyana. Kuphatikiza kwawo kwapadera kwa katundu, kusinthika, komanso kulimbikira kumawapangitsa zinthu zofunika kwambiri pazogulitsa zosiyanasiyana komanso njira. Kupitilizabe zatsopano zamamesi ndi ukadaulo kumangidwa kuti pakhale patsogolo ndikutsegulira mwayi watsopano m'zaka zikubwerazi.
Post Nthawi: Apr-18-2024