Before revision: + Track etching of common polymers Material pH Wet etchant Sensitizer1) Desensitizer2) T/°C3)Speed4)Selectivity5) PC basic NaOH UV Alcohols 50-80Fast 100-10000 PET basic NaOH UV, DMF Alcohols 50-90Fast10-1000 basic K2CO3 80 Slow 1000 PI basic NaOCl NaOH 50-80Fast 100-1000 CR39 basic NaOH UV 50-80 Fast 10-1000 PVDF6) basic KMnO4 + NaOH 80Medium10-100 PMMA6) acidic KMnO4 + H2SO4 50-80 Medium 10 PP6) acidic CrO3 + H2SO4 80Fast10-100 1) Sensitizers increase the track etch ratio by breaking bonds or by increasing the free volume.
After revision: + Track etching of common polymers Material pH Wet etchant Sensitizer1) Desensitizer2) T/°C3)Speed4)Selectivity5) PC basic NaOH UV Alcohols 50-80Fast 100-10000 PET basic NaOH UV, DMF Alcohols 50-90Fast10-1000 basic K2CO3 80 Slow 1000 PI basic NaOCl NaOH 50-80Fast 100-1000 CR-39 basic NaOH UV 50-80 Fast 10-1000 PVDF6) basic KMnO4 + NaOH 80Medium10-100 PMMA6) acidic KMnO4 + H2SO4 50-80 Medium 10 PP6) acidic CrO3 + H2SO4 80Fast10-100 1) Sensitizers increase the track etch ratio by breaking bonds or by increasing the free volume.