“Natural rubber, also called India rubber or caoutchouc, is an elastomer (an elastic hydrocarbon polymer) that was originally derived from latex, a milky colloid produced by some plants. The plants would be ‘tapped’, that is, an incision made into the bark of the tree and the latex sap collected and refined into a usable rubber. The purified form of natural rubber is the chemical polyisoprene, which can also be produced synthetically. Natural rubber is used extensively in many applications and products, as is synthetic rubber. It is normally very stretchy and flexible”  (Wikipedia, Natrual Rubber, 4/27/2011)

Elastomers /Rubber
LDPE/NR/Hyacinth Fiber Composites

Natural Polymers    
Natural Rubber (NR) Nanocomposites 
NR /Tannin IPN 

Polymers /Resins