Re: Polystyrene? Bubble wrap? Aerogel?
popped bubble wrap and ruptured polystyrene STILL has structure that hold things apart and the air that has gone is replaced by vacuum... a far better insulator with the only mode of heat transfer from one side to the other being conduction through the plastic and radiation across the vacuum... bubble wrap and expanded polystyrene have the additional mode of convection inside the cells...
all in all, popped bubble-wrap and ruptured expanded polystyrene will still have a very good insulation figure...
I'm not sure aerogel will deconstruct as it is an open celled structure in the first place so the air will be replaced by vacuum...
in fact, aerogel was exposed to open space in the Stardust spacecraft as a trap for particles from comet Wild 2
http://en.wikipedia.org/wiki/Stardust_%28spacecraft%29#Sample_collection