Driven by demand for natural ingredients in the large food and beverage industry, which will bolster use of cellulose ethers and starch and fermentation polymers, US demand for natural polymers is forecast to grow 4.3% a year to $5.1 billion in 2020, reaching 1.9 billion pounds.  While F&B will be the primary driver initially, strong demand in health care will propel the medical market to the top spot by the end of the period, according to Natural Polymers, a new study from The Freedonia Gr...