Xin Li

Development of Water-Soluble Laundry Bags Focused on creating biodegradable films from Polyvinyl Alcohol (PVA) and Starch blends. 1. Material Compounding : Developed specialized biodegradable formulations by blending PVA and Starch using Twin-Screw Extrusion, optimizing the mixture for maximum solubility and strength. 2. Film Manufacturing : Operated Blown Film Extrusion to produce uniform water-soluble films, controlling processing parameters to achieve the desired thickness and quality. 3. Solubility & Performance Testing : - Water Solubility Test: Conducted rigorous testing to measure dissolution rates and temperatures, ensuring the film meets the requirements for laundry bag applications. - Physical Properties : Evaluated mechanical strength and barrier performance using UTM, MFI, and WVTR. 4. Advanced Characterization : Utilized FTIR, DSC, TGA, SEM, and XRD to analyze the chemical structure, thermal stability, and morphology of the polymer blends. 5. R&D Data Analysis : Recorded and analyzed experimental data to improve material recipes, contributing to the development of sustainable packaging solutions.

1. Polymer Processing Instruction : Provided hands-on technical training on industrial-scale equipment: - Extrusion: Twin-Screw, Cast Film, and Blown Film Extrusion. - Molding & Mixing: Compression Molding and Internal Mixer operations. 2. Material Characterization & Testing : Supervised and guided students in utilizing advanced analytical tools: - Thermal & Chemical Analysis: DSC, TA, and FTIR. - Structural & Surface Imaging: SEM and XRD. - Physical Properties: UTM, MFI, and WVTR. 3. Safety & Lab Management : Managed laboratory safety protocols, equipment calibration, and ensured a productive learning environment for students. 4. Technical Communication : Simplified complex polymer theories into practical concepts, improving student engagement and understanding of manufacturing principles.