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The effects of coupling agent, particle diameter (d), particle volume fraction (Vc), particle size distribution and average matrix ligament thickness (T̄) on the impact strength of high density polyethylene (HDPE)/CaCO3 composites have been investigated. A coupling agent is required for dispersing the CaCO3 particles (d∼0.6–5.6μm) without agglomeration in the HDPE matrix. The optimum weight ratio...
The influence of rubber particle spatial distribution on the toughening and stiffening efficiency of poly(vinyl chloride) (PVC)/nitrile rubber (NBR) blends is quantitatively studied. Blends with the pseudonetwork morphology or the morphology of well-dispersed rubber particles are used to elucidate the influence. The spatial distribution and matrix ligament thickness considerably affect the impact...
We have derived a new equation for correlating the average matrix ligament thickness with other morphological parameters of a polymer blend with the pseudonetwork morphology in order to evaluate the effect of rubber particle spatial distribution on the brittle ductile transition of poly(vinyl chloride) (PVC)/nitrile rubber (NBR) blends. Two types of rubber particle spatial distributions, i.e. well-dispersed...
The effects of morphological parameters, especially rubber particle size distribution, on the brittle ductile transition of poly(vinyl chloride) (PVC)/nitrile rubber (NBR) blends with the morphology of well-dispersed NBR particles have been studied. PVC has been supertoughened with well-dispersed NBR particles. A master curve of the brittle ductile transition of PVC/NBR blends is obtained by plotting...
Poly(vinyl chloride) (PVC)/nitrile rubber (NBR) blends with the pseudonetwork morphology and the morphology of well-dispersed particles were prepared to elucidate the influence of rubber particle spatial distribution on the fracture behaviour of the blends. The main toughening mechanism of PVC/NBR blends is matrix shear yielding, irrespective of rubber particle spatial distribution. However, the particle...
The poly(vinylidene fluoride) (PVDF)/polyamide 6 (PA6) interfacial adhesion has been measured, and morphology and mechanical properties of the binary blends have been investigated. The lap shear strength of the PVDF/PA6 pair indicates a high interfacial adhesion, which is evidence for specific intermolecular interactions between the two polymers. Immiscibility of PVDF and PA6 has clearly been observed...
The effect of particle size distribution on the brittle ductile transition of high density polyethylene (HDPE)/CaCO 3 composites is studied. Fu and coworkers reported that the brittle ductile transition curves of HDPE/CaCO 3 composites obtained by plotting impact strength against matrix ligament thickness do not give a master curve. In this work, the splitting of brittle ductile transition...
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