Amorphous Polymers

Uniform Low Shrinkage

and   Clear or Nearly Clear Polymers

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Amorphous Polymers 

 by Ryan Cassaro

What are amorphous polymers?

                The term amorphous refers to the morphology of polymeric materials.  In this case, the carbon chains are long and unorganized, intertwining to create a glasslike material.  Due to the lack of organization or ability to organize, no crystallinity is observed in amorphous polymers, making their strengths temperature dependant.  Basically, as the temperature increases, the amorphous polymer will soften gradually.  The defining temperature for amorphous polymers is the glass transition temperature, or Tg.  Below this temperature, the amorphous chains become immobilized and rigid and behave like glass. 

What are common properties of amorphous polymers?

                Due to their intertwining chains, amorphous polymers experience viscous flow when heated.  They also have a decreased chance of warping and shrink less during molding than semi-crystalline plastics.  Many amorphous polymers may also exhibit rubber-like properties, able to stretch and deform without fracturing. 

What are common examples of amorphous polymers?