Kodi pepala limapangidwa ndi cellulose?

pepala limapangidwa makamaka kuchokera kuselulosiulusi, womwe umachokera ku zinthu monga zamkati zamatabwa, thonje, kapena zomera zina zokhala ndi ulusi. Ulusi wa cellulose uwu umakonzedwa ndikupanga mapepala opyapyala kudzera mu njira zingapo zochiritsira zamakina ndi mankhwala. Njirayi nthawi zambiri imayamba ndi kukolola mitengo kapena zomera zina zomwe zili ndi cellulose yambiri. Kenako, cellulose imachotsedwa kudzera m'njira zosiyanasiyana monga pulping, pomwe matabwa kapena zomera zimasweka kukhala zamkati kudzera m'njira zamakina kapena mankhwala.

Kapepala kameneka kakapezeka, kamakonzedwanso kuti kachotse zinyalala monga lignin ndi hemicellulose, zomwe zingafooketse kapangidwe ka pepalalo ndikupangitsa kuti mtundu wake usinthe. Kuyeretsa kungagwiritsidwenso ntchito kuyeretsa kapepalako ndikuwonjezera kuwala kwake. Pambuyo poyeretsa, kapepalako kamasakanizidwa ndi madzi kuti apange matope, omwe kenako amaikidwa pa waya kuti atulutse madzi ochulukirapo ndikupanga ulusi woonda. Kenako kapepalaka kamakanikizidwa ndikuumitsidwa kuti apange mapepala.

Cellulose ndi yofunika kwambiri pakupanga mapepala chifukwa cha mawonekedwe ake apadera. Imapatsa pepala mphamvu ndi kulimba komanso imalola kuti likhale losinthasintha komanso lopepuka. Kuphatikiza apo, ulusi wa cellulose umagwirizana kwambiri ndi madzi, zomwe zimathandiza pepala kuyamwa inki ndi zakumwa zina popanda kusweka.

PameneselulosiPopeza pepala ndi gawo lalikulu la pepala, zowonjezera zina zitha kuphatikizidwa panthawi yopanga mapepala kuti ziwonjezere mawonekedwe ake. Mwachitsanzo, zinthu zodzaza monga dongo kapena calcium carbonate zitha kuwonjezeredwa kuti ziwongolere kuonekera bwino komanso kusalala, pomwe zinthu zoyezera kukula monga sitachi kapena mankhwala opangidwa zingagwiritsidwe ntchito kuti ziwongolere kuyamwa kwa pepala ndikuwonjezera kukana kwake ku madzi ndi inki.