Polyallyl diglycol carbonate

The requirement for use of these membranes as templates is to have high track etch ratios. For PC, track etch ratios above ten thousand have been observed. At the other extreme, addition of solvents, such as methanol, ethanol or propanol can dramatically decrease the track etch ratio, down to 2 to 4 in the case of PET. Although they accelerate the etching process, polymers like PMMA are generally etched with an acidic medium leading to very low etch track ratios 1-10. In a recent study on the polymer polyallyl diglycol carbonate (PADC) [9] it was found that etch-rate values of the PADC increase nearly fourfold if the polymer is irradiated with 100 Mrad dose of electrons at 2 MeV prior to the heavy ion irradiation. The etch tracks were created by 140 MeV Si ions. 

Ehnaghraby E. K. and Salama, T. A. 2010. Investigation of the fluorescence emitted from polyallyl diglycol carbonate modified by gamma-ray radiation excited by UV radiation. Radiat. Eff. Defects Solids... 

PADG polyallyl diglycol carbonate (see also PBR polybutadiene-vinyl pyridine... 

Polyallyl diglycol carbonate n. A high-impact, transparent thermoplastic with excellent abrasion resistance, made from Pittsburg Plate Glass Industries CR-39 monomer (and hence sometimes called CR-39). It is widely used in eyeglasses. 

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