What's the durability? PVA seems to be very water-soluble In section 4 "Experimental Section", which is oddly behind section 3 "Conclusions", you will find tha

What's the durability? PVA seems to be very water-soluble In section 4 "Experimental Section", which is oddly behind section 3 "Conclusions", you will find that unless protected by a layer of paint, the material is severely weakened by humidity and subject to swelling and deformation when soaked with water.