Solid-state processing for the preparation of poly(p-phenylenesulfide) (PPS-) based nano-composites having finely dispersed layered fillers was conducted. The mixture of PPS and organically modified layered filler (OMLF) (95/5 wt./wt.) was subjected to the processing using thermostated hot-press at 150 degrees C, below T-m of PPS (i.e., PPS is still at the solid-state), and applying pressures of 33 MPa for 30 s. The mixture exhibited disorder and delaminated layer structure with the thickness of 10-20 nm into the PPS matrix. In contrast, a nano-composite prepared by melt compounding at 300 degrees C for 3 min showed large stacked silicate layers in the PPS matrix. The processing led to delamination of the silicate layers and attained the discrete dispersion.