Kusungunuka kwa ethyl cellulose mu acetone

Ethyl cellulose ndi polima yomwe imagwiritsidwa 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 kusungunuka kwake, komwe kumatha kusiyanasiyana kutengera zosungunulira zomwe zimagwiritsidwa ntchito.

Acetone ndi chosungunulira wamba chomwe chimagwiritsidwa ntchito nthawi zambiri popanga mafilimu ndi zokutira za ethyl cellulose. Ethyl cellulose imasungunuka pang'ono mu acetone, kutanthauza kuti imatha kusungunuka pang'ono koma osasungunuka kwathunthu. Kuchuluka kwa kusungunuka kwa ethyl cellulose mu acetone kumadalira zinthu zosiyanasiyana monga kulemera kwa maselo, kuchuluka kwa ethoxylation, komanso kuchuluka kwa polima.

Nthawi zambiri, ethyl cellulose yolemera kwambiri imakhala yosasungunuka mu acetone poyerekeza ndi ethyl cellulose yocheperako. Izi zili choncho chifukwa ma polima olemera kwambiri a molekyulu amakhala ndi digiri yapamwamba ya polymerization, zomwe zimapangitsa kuti zikhale zovuta kwambiri komanso zomangika kwambiri zomwe zimagonjetsedwa kwambiri ndi kusungunuka. Mofananamo, ethyl cellulose yokhala ndi ethoxylation yapamwamba imakhala yosasungunuka mu acetone chifukwa cha kuchuluka kwa hydrophobicity ya polima.

Kusungunuka kwa ethyl cellulose mu acetone kungakhudzidwenso ndi kuchuluka kwa polima mu zosungunulira. M'malo otsika, ethyl cellulose amatha kusungunuka mu acetone, pomwe pakuchulukirako, kusungunuka kumatha kuchepa. Izi ndichifukwa choti pamagulu apamwamba, mamolekyu a ethyl cellulose amatha kulumikizana wina ndi mnzake, ndikupanga maunyolo a polymer omwe sasungunuka mu zosungunulira.

Kusungunuka kwa ethyl cellulose mu acetone kumatha kukulitsidwa ndikuwonjezera zosungunulira zina kapena mapulasitiki. Mwachitsanzo, kuwonjezera kwa ethanol kapena isopropanol ku acetone kungapangitse kusungunuka kwa ethyl cellulose mwa kusokoneza mgwirizano wa intermolecular pakati pa maunyolo a polima. Mofananamo, kuwonjezera kwa plasticizers monga triethyl citrate kapena dibutyl phthalate akhoza kuonjezera kusungunuka kwa ethyl cellulose pochepetsa mphamvu intermolecular pakati pa unyolo polima.

Mwachidule, ethyl cellulose imasungunuka pang'ono mu acetone, ndipo kusungunuka kwake kumatha kusiyanasiyana kutengera zinthu zosiyanasiyana monga kulemera kwa maselo, kuchuluka kwa ethoxylation, komanso kuchuluka kwa polima. Kusungunuka kwa ethyl cellulose mu acetone kumatha kukulitsidwa ndikuwonjezera zosungunulira zina kapena mapulasitiki, ndikupangitsa kuti ikhale polima yosunthika kuti igwiritsidwe ntchito zosiyanasiyana.