In situ dispersion of lignin in polypropylene via supercritical CO₂ extrusion foaming: effects of lignin on cell nucleation and foam compression properties

• Main Authors: Ho, Keen Hoe, Lu, Xuehong, Lau, Soo Khim
• Other Authors: School of Materials Science and Engineering
• Format: Article
• Language: English
• Published: 2023
• Subjects: Engineering::Materials; Polypropylene; Lignin
• Online Access: https://hdl.handle.net/10356/169240
• Institution: Nanyang Technological University

Supercritical CO2 (scCO2) extrusion foamed high-melt-strength (HMS) polypropylene (PP) often suffers from low cell density, large cell sizes, and poor cell structure uniformity due to the poor nucleation rates of CO2 in the PP. To remedy this, various inorganic fillers have been used as heterogeneou...