Ethyl cellulose hydrophilic kapena hydrophobic

Ethyl cellulose ndi polima opangidwa omwe amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, kuphatikiza mankhwala, chakudya, komanso chisamaliro chamunthu. Amadziwika ndi zinthu zabwino kwambiri zopangira mafilimu, kugwirizana kwakukulu ndi zipangizo zina, komanso kukana bwino kwa mankhwala ndi zinthu zachilengedwe. Chimodzi mwazinthu zazikulu za ethyl cellulose ndi hydrophobicity yake, yomwe ndi muyeso wa kuyanjana kwake ndi madzi.

Hydrophobicity ndi katundu wa chinthu chomwe chimafotokoza chizolowezi chake chothamangitsa mamolekyu amadzi. Nthawi zambiri, zinthu za hydrophobic sizisungunuka kapena sizisungunuka m'madzi ndipo zimakonda kuyanjana ndi mamolekyu ena a hydrophobic. Hydrophobicity nthawi zambiri imadziwika ndi kukhalapo kwa magulu osagwirizana ndi ma polar kapena otsika pama cell, monga unyolo wa hydrocarbon kapena mphete zonunkhira.

Ethyl cellulose imatengedwa kuti ndi hydrophobic polima chifukwa cha kukhalapo kwa magulu a ethyl mu kapangidwe kake ka maselo. Magulu a ethyl ndi osakhalapo ndi hydrophobic, ndipo kupezeka kwawo kumawonjezera hydrophobicity yonse ya polima. Kuphatikiza apo, ethyl cellulose imakhala ndi gawo lochepa la m'malo mwa magulu a ethyl, omwe amathandizira kuti akhale ndi hydrophobic.

Komabe, hydrophobicity wa ethyl mapadi akhoza kusinthidwa ndi kusintha mlingo wa m'malo kapena kuwonjezera magulu hydrophilic kuti polima dongosolo. Mwachitsanzo, kuyambitsidwa kwa magulu a hydrophilic monga magulu a hydroxyl kapena carboxyl kumatha kukulitsa hydrophilicity ya polima ndikuwongolera kusungunuka kwake m'madzi. Mlingo wolowa m'malo ukhoza kuwonjezeredwa kuti muwonjezere kuchuluka kwa magulu a hydrophilic ndikuwonjezera hydrophilicity ya polima.

Ngakhale hydrophobicity yake, ethyl cellulose imawonedwabe ngati chinthu chothandiza pazinthu zosiyanasiyana, makamaka m'makampani opanga mankhwala. Chikhalidwe chake cha hydrophobic chimapangitsa kukhala chotchinga chabwino kwambiri pamakina operekera mankhwala, chifukwa amatha kuletsa kulowa kwa chinyezi kapena zinthu zina za hydrophilic mu mawonekedwe a mlingo. Izi zingathandize kuteteza bata ndi mphamvu ya mankhwala kwa nthawi yaitali.

Mwachidule, ethyl cellulose ndi hydrophobic polima chifukwa cha kukhalapo kwa nonpolar ethyl magulu mu kapangidwe kake maselo. Komabe, hydrophobicity yake imatha kusinthidwa posintha kuchuluka kwa m'malo kapena kuwonjezera magulu a hydrophilic pamapangidwe a polima. Ngakhale kuti ndi hydrophobic, ethyl cellulose akadali chinthu chothandiza pazinthu zosiyanasiyana, makamaka m'makampani opanga mankhwala.