OK folks - here's one for you petrochemical types:
World is set 200 years post an apocalypse that wipes the global population back to about 280 million (the population of the world circa 1000AD).
The question is what could have survived over those 200 years? Now I am typing this sitting at an oak table that was made in 1700 on a chair that was made around the same time, in a house that was built in around 1500 so we know that some things, especially protected wood and maintained stone, brick or wood will survive happily. Metal things will also survive, if cared for, - I have a 1707 dated sabre and a 1792 pattern British Light Cavalry sabre issued around 1815. I also have an 1840s Enfield Rifle. All these things work, although the grips of the swords would need to be replaced as the ivory on one and the leather and wood on the other, has deteriorated. But once the leather washers and grips are replaced, the blades and tangs are perfectly as serviceable now as they were when they were made. The muzzle loading rifle does fire minie balls with black powder and percussion caps and is still capable of blowing a man's head off at 200 yards as it was when it left the Enfield works 170 odd years ago.
The question I have is what about the survival of plastics and polymers. Now we all know that man made fabrics and, indeed other fabrics and plastics can deteriorate in a matter of a few summers worth of UV light.
Are there any forms of plastic that do not suffer from this?
Do polymers also suffer from oxidisation as well as UV damage?
How likely is it that plastics of different types would have survived 200 years?