• nylon 6;
  • poly(vinyl chloride) (PVC);
  • graft copolymers;
  • compatibilization


The morphology and mechanical properties of PVC/SMA-g-PA6 blends were investigated in this paper. Graft to polymer SMA-g-PA6 was prepared via a solution graft reaction between SMA and PA6. FTIR test evidences the occurrence of the graft reaction between SMA and PA6. DSC analysis shows that SMA-g-PA6 has a lower melting point of 187°C, which may result in a decrease in crystallinity of PA6 and thus enable efficient blending of SMA-g-PA6 and PVC. Compatibilization was evidenced by the dramatic increase in mechanical properties, the smaller particle size and finer dispersion of PA6 in PVC matrix, and, further, a cocontinuous morphology at 16 wt % SMA-g-PA6 content. SMA-g-PA6 from the solution graft reaction can toughen and reinforce PVC material. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 432–439, 2004