Mixed Matrix Membranes of H-ZSM-5 Zeolite incorporated sodium alginate was prepared by solution casting method and crosslinked with glutaraldehyde. The prepared membranes were characterized by Fourier transform infrared spectroscopy, Scanning electron microscopy and Differential scanning calorimetry. Resulting membranes were tested for Pervaporation (PV) separation of water- isopropanol mixtures at 300 C. The H-ZSM-5 Zeolite, with its hydrophilic nature as well as molecular sieving effect and its favourable interaction with hydrophilic NaAlg was responsible to enhance the PV dehydration of isopropanol interms of selectivity, flux and pervaporation separation index (PSI). The experimental studies explain that there is an increase in membrane performance such as swelling, permeation flux and water selectivity with H-ZSM-5 content in the membrane. In addition membrane swelling experiments with feed water-composition were performed to understand the PV results.