Ukusabela hlangana kwe-bisphenol A ne-phosgene kuligadango eliqakathekileko ekulungiseleleni i-polycarbonate.

bisphenol A bpa Ukuphendula nge-Phosgene — Ukulungiselela i-Polycarbonate
Ukusabela kwe-bisphenol A BPA ne-phosgene kuligadango eliqakathekileko ekulungiseleleni i-polycarbonate. Kulokhu kuphendula, i-athomu ye-carbonyl carbon ku-phosgene ine-electrophilicity enamandla, begodu i-athomu ye-phenolic hydroxyl oxygen ye-bisphenol A isebenza njengesikhungo se-nucleophilic ukuyihlasela, yenza umkhiqizo ophakathi. Bese, umkhiqizo ophakathi ulahlekelwa yi-molecule yinye ye-hydrogen chloride begodu uragela phambili nokusabelana namanye ama-molecule we-bisphenol A BPA kanye ne-phosgene, kancanikancani u-polymerize ukwakha i-polycarbonate. Ukusabela lokhu kuvamise ukwenziwa nge-organic solvent, begodu i-ejenti ebopha i-asidi itlhoga ukufakwa ukudosa i-hydrogen chloride eyakhiwe kukusabela ukukhuthaza ukusabela bona kuragele phambili ngendlela ehle. Ubujamo obuhlukileko bokuphendula, njengomhlobo we-solvent yokuphendula, ukukhethwa kwe-ejenti ebopha i-esidi, kanye nesikhathi sokuphendula, koke kuzokuthinta ikhwalithi nokusebenza kwe-polycarbonate. Ukwenza isibonelo, ukukhetha isisombululo esifaneleko se-organic kungenza ngcono ukuncibilika kwezinto eziphendulako begodu kwenze ukusabela kuragele phambili ngokufanako; i-ejenti efaneleko yokubopha i-esidi ingadonsa kuhle i-hydrogen chloride, igcine i-esidi ne-alkalinithi yehlelo lokuphendula, begodu iqinisekise ukuragela phambili okubushelelezi kokuphendula.