Application Note:

Oxidized carbon nanofibers can improve the tensile strength of various polymer composites. However, large amounts of oxygen addition on the carbon nanofibers decreased the composite’s tensile strength down to the level of the neat matrix

Source Data:

Top left graph: Tensile strength of polypropylene composites fabricated with 10 volume % carbon nanofibers containing varying fractions of surface oxygen. Large amounts of oxygen addition decreased composite tensile strength down to the level of the neat matrix. Highly oxidized carbon nanofibers may find it difficult to form a bond with the low surface energy, low polarity polypropylene.

Top right graph: Flex modulus improvements for 4 weight % nanofiber/epoxy composites as a function of surface oxygen concentration on the carbon nanofibers.

Bottom left graph: Tensile strength improvements for 4 weight % nanofiber/epoxy composites as a function of surface oxygen concentration on the carbon nanofibers.

Bottom right graph: Improvements in tensile strength observed in BMI composites with the addition of two different types of oxidized nanofibers.

Our Recommendation:

To improve the mechanical properties of various polymers, PPI recommends the following products XXX



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