Page 79 - Polymer-based Nanocomposites for Energy and Environmental Applications
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Preparation and properties of nanopolymer advanced composites: A review  55



                          35
                        Charpy impact strength (kJ/m 2 )  25
                          30



                          20
                          15

                          10

                          5
                          0
                              GF0    GF2   GF4    GF6    SF0   SF4
                                            Sample Nos
           Fig. 2.24 Comparison of impact strength with control sample (GF0) [47].


                       7.5
                                                                 744h
                       7.0
                                                                 624h
                       6.5
                                                                 504h
                       6.0
                                                                 384h
                       5.5
                     Moisture absorption (%)  4.5                144h
                                                                 264h
                       5.0
                                                                 24h
                       4.0
                       3.5
                       3.0
                       2.5
                       2.0
                       1.5
                       1.0
                       0.5
                       0.0
                                GF0    GF4     GF6    SF0     SF4
                                           Sample Nos
           Fig. 2.25 Percentage of water absorption of GFR laminates and PS foam-GFR face sheet
           sandwich laminates with respect to different samples [47].


           However, further addition of clay led to negative effect on mechanical properties of
           the HDPE/bamboo composite system. For the bamboo fiber-reinforced system, the
           tensile strength increased almost linearly with increase of the MAPE content. Further,
           the bending modulus and strength increased with MAPE loading up to the 4%–6%
           level, but they began to decrease when more MAPE is added.
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