A series of polymeric titanium carbide (Ti3C2T x ) MXene composites were prepared by in situ polymerization of 3,4-ethylenedioxythiophene (EDOT) and poly­(4-styrenesulfonate) (PSS) on Ti3C2T x MXene materials. The resulting PEDOT:PSS/MXene composites were fabricated into a gas sensor using a dip coating technique. The composite sensor was able to measure ammonia (NH3) at room temperature and showed a strong gas response of 36.6% against 100 ppm of NH3 with the response and recovery time of 116 and 40 s, respectively. In addition, the composite sensor exhibited enhanced sensing performance compared to both pure PEDOT:PSS- and Ti3C2T x MXene-based sensors, demonstrating a synergistic effect between PEDOT:PSS polymers and Ti3C2T x MXene 2D materials. These data suggested the great potential of using PEDOT:PSS/MXene composite sensors for room temperature detection of NH3.

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The biocomposite films of Polylactic acid (PLA) and Pandanus Amaryllifolius filler (PAF) were prepared using solvent casting method. The effect of PAF content and modification of PAF by silane coupling agent on mechanical, morphological and enzymatic biodegradation of PLA/PAF biocomposite films were determined. PAF content in PLA/PAF biocomposite films caused the tensile strength and elongation at break to decrease, meanwhile Young’s modulus of biocomposite films increased. The SEM micrographs showed poor filler-matrix interaction between PAF and PLA matrix by showing rough surface morphology. The chemical modification of PAF using 3-APE silane coupling agent improved Young’s modulus and tensile strength in biocomposite films however elongation at break has exhibited the trend of decrease. The morphological studied showed that modified PAF had better dispersion and interaction with PLA matrix by showing smoother surface morphology. The changes of functional group of unmodified and modified biocomposite films were proven by Fourier Transform Infrared study.