Greatly improved melt strength
By introducing long-chain branching, the melt strength and strain-hardening behavior are significantly enhanced, enabling successful supercritical CO2 foaming.
Wei-Lin, Liu · Lyu, Mingfu · Hengyuan, Zhang · Liu, Jianye · Zhang, Shijun
Chinese Journal of Polymer Science (English Edition) 2024
Melt strength greatly improved
Viscosity of modified PGA is much higher than unmodified PGA
Modified PGA shows more notable strain hardening behavior