Starch ultimate tensile strength

Fig. 2. Ultimate tensile strength of starch- -poly(methyl acrylate) from Dennenberg et al. as functions of poly-(methyl acrylate) content and molecular weight of the grafted side chains. Homopolymer is retained in the samples.

Fig. 3. Effects of graft content and temperature of pol3nnerization of starch- -poly(methyl acrylate) on its ultimate tensile strength at 5 cm/min strain rate. Dennenberg s data is from samples containing homopol3aner and polymerized over the temperature range 27-40°C other data is for homopolymer-free materials pol3nnerized at the specified temperatures.

Polycaprolactone can increase the tensile strength and impact strength but reduce the ultimate elongation, tensile modulus, and shrinkage of the thermoplastic starch (TPS) polymer (Avemous et al. 2000). Montmorillonite clay can improve the properties of TPS and create a biobased nanocomposite (Bordes et al. 2009 Aouada et al. 2011). 

---