Moderator: Tim White
cob wrote:I thought WATER HAD NO AFFECT ON NYLON AT ALL!!!
cob wrote:OK guys maybe I am full of s**t, (and please correct me if I am) but I thought WATER HAD NO AFFECT ON NYLON AT ALL!!!
Meaning it could not POSSIBLY shrink it.
hank_moon wrote:well...i wouldn't say you are FOS, but water does have an effect on nylon - it absorbs water, making it stretchier, weaker, and less abrasion resistant. Not sure if individual fibers actually shrink, but nylon ropes do.
...[nylon] doesn't actually absorb water (it's a plastic), but the water acts as a plasticizer and changes the mechanical properties of the nylon at the molecular level.
hank_moon wrote:But...but...plastics do absorb water...in particular nylon is very water absorbent (up to 10% from water absorbed at the molecular level, with additional weight from water trapped between the fibers - heavy!). Some plastics are less absorbent, like Polyester.
Compared to cotton, nylon is hydrophobic.
The significant fact about nylon's water absoption is the profound mechanical effects that occur rather than the volume of water retained.
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