This research was to investigate the effect of silanization of 3-(trimethoxysilyl) propyl methacrylate of polyvinyl alcohol (PVA) as a binder and compatibilizer for the production of a pulp fibre sheet based agricultural waste of banana pseudo stem fibre and laminating with polylactic acid (PLA), respectively. The modification of PVA was successful by a confirmation of FTIR. As a result of mechanical-thermal analysis (DMTA), the modified PVA performed prominence as a compatibilizer in the combination of PLA and pulp sheet for the lamination process. It influenced to improve storage modulus roughly up to 50% while performing more viscous. Similarly, the tensile test also confirmed the improved properties. Interestingly, the biocomposite laminate as used in the modified PVA showed more hydrophilic rather than unmodified. A microbial growth test by Aspergillus niger also revealed the modified PVA influencing more severe biodegradation on the laminate.