Hikmatun Nimah : Preparation and Characterization of Biodegradable Poly(L-lactide) (PLLA) Reinforced with Cellulose from Rice Straw
Hikmatun Nimah S.T., M.Sc.Ph.D
29th International Symposium on Polymer Analysis and Characterization 2016 (ISPAC 2016)
PLLA; Cellulose; Composite; Reinforcement agent
Biodegradable composites comprised of poly(L-lactide) (PLLA) and cellulose from rice straw biomass were prepared through solvent blending method. The cellulose was incorporated in the PLLA matrix as reinforcement agent. The properties of the biocomposite were then characterized by using Fourier Transform Infrared (FT-IR), Polarized Optical Microscopy (POM), Differential Scanning Calorimetric (DSC), Thermo Gravimetric Analysis (TGA), Dynamic Mechanical Analysis (DMA) and Scanning Electron Microscopy (SEM). The rice straw biomass was treated to get microcrystalline cellulose (MCC) by using acid hydrolysis. The SEM images of the composites fractured surface show that some of cellulose filler are aggregated in PLLA matrix. The composite films transparency decrease with the MCC content. The composites also show better thermal stability compared to the pristine PLLA since cellulose has good thermal stability. The addition of filler in nano or micro size could influence the crystallization behaviour of the polymer. The MCC acts as nucleating agent in the crystallization of PLLA. The mechanical and thermal properties and interaction molecular of the synthesized composites were also investigated and analyzed.