Umbuzo othi "Ungancibilika Plastic?" Ingabe okuvamile, kuvame ukuzwakala emizini, ama-workshop kanye nemibuthano yesayensi. Impendulo, njengoba ivela, iyinkimbinkimbi, futhi le ndatshana izolungisa izimiso zamakhemikhali kanye nokusabela okugcizelela lo mkhuba.

i-acetoneyingxenye elula ye-organic okungokomndeni weKetone. Inefomula yamakhemikhali c3h6o futhi yaziwa kahle ngekhono layo lokuncibilikisa izinhlobo ezithile zepulasitiki. Ngolunye uplasitiki, yigama elibanzi elimboza izinhlobonhlobo zezinto ezenziwe ngabantu. Amandla we-acetone ukuncibilika upulasitiki kuya ngohlobo lwepulasitiki ohilelekile.

Lapho i-acetone ihlangana nezinhlobo ezithile zepulasitiki, kwenzeka ukusabela kwamakhemikhali. Ama-molecule epulasitiki akhangwa ama-molecule e-acetone ngenxa yemvelo yawo ye-polar. Lokhu okuhehayo kuholela epulasitiki ekutholeni amandla, okuholela ekutholeni umphumela "oncibilikayo". Kodwa-ke, kubalulekile ukuqaphela ukuthi le akuyona inqubo yangempela yokuncibilika kepha kunalokho ukuxhumana kwamakhemikhali.

Isici esiyisihluthulelo lapha ubumbano lwama-molekyuli abathintekayo. Ama-molecule e-polar, afana ne-acetone, abe nokusatshalaliswa okuhle ngokwengxenye nangokwengxenye yesakhiwo sabo. Lokhu kuyabavumela ukuthi bahlanganyele futhi bahlanganise ngezinto ze-polar ezifana nezinhlobo ezithile zepulasitiki. Ngalesi sivumelwano, isakhiwo samangqamuzana epulasitiki siyaphazamiseka, siholela "ekuncibilikeni" kwaso ".

Manje, kubalulekile ukuhlukanisa phakathi kwezinhlobo ezahlukene zepulasitiki lapho usebenzisa i-acetone njenge-solvent. Ngenkathi amanye amapulasitiki afana ne-polyvinyl chloride (PVC) ne-polyethylene (PE) athambekele kakhulu ekukhangenweni kwe-acetone kakhulu, abanye bathande i-polypropylene (PP) ne-polyethylene terephthalate (pet) ayisebenzi kancane. Lo mehluko ekusebenzeni kabusha kungenxa yezinhlaka zamakhemikhali ezahlukahlukene nama-polastics ahlukene.

Ukuvezwa isikhathi eside kwepulasitiki ukuze i-acetone kungahle kube nomphumela womonakalo ongapheli noma ukonakaliswa kwezinto ezibonakalayo. Lokhu kungenxa yokuthi ukusabela kwamakhemikhali phakathi kwe-acetone nopulasitiki kungaguqula ukwakheka kwamangqamuzana okugcina, okuholela ezinguquko ezintweni zayo ezibonakalayo.

Amandla ka-Acetone 'wokuncibilika' upulasitiki angumphumela wokuphendula kwamakhemikhali phakathi kwama-molecule e-polar acetone nezinhlobo ezithile zepulasitiki yePolar. Lokhu kuphendula kuphazamisa ukwakheka kwamangqamuzana epulasitiki, okuholela ekutholeni lolwandle lwayo olubonakalayo. Kodwa-ke, kubalulekile ukuqaphela ukuthi ukuvezwa isikhathi eside ku-Acetone kungahle kube nomphumela womonakalo waphakade noma ukonakaliswa kwezinto zepulasitiki.