The high performance rPE/WF composite was successfully prepared
by the synergistic compatibilization of GPE/GPW compounds
at multi-scale interfaces of the composite. GPE can afford the
strong interfacial interaction between rPE and WF while GPW
can supplement the interfacial interaction by permeating into the
cavities and capillaries of WF. The rPE/WF composites show dramatically
higher performances than the composites compatibilized
separately by GPE and GPW in terms of mechanical properties and
water resistance and maintain considerable rheological properties
and thermal stability. Due to high compatibilization, the fracture
mode of the composites compatibilized by the GPE/GPW compounds
is fiber failure. The synergistic effects of GPE and GPW also
make the dynamic mechanical properties of the composites compatibilized
by the GPE/GPW compounds higher than that of the
composites compatibilized separately by GPE and GPW and
approach that of the uncompatibilized composites. However, the
GPW content should not be too high in that the molecular weight
of GPW is too low to maintain desirable mechanical properties and
thermal stability for the rPE/WF composites.