Formation of novel "coral reef-like" structures for polycarbonate microcellular foam via asphalt-based microporous organic polymers and supercritical CO2

作者：Zhu, Jingyi; Tan, Donggui; Li, Lei; Zhang, Shuidong^*; Chen, Yukun

来源：European Polymer Journal, 2020, 134: 109780.

DOI：10.1016/j.eurpolymj.2020.109780

• Polycarbonate microcellular foams
• Microporous organic polymers
• "Coral reef-like" structures
• Supercritical CO2

Polycarbonate microcellular foam (PCMF) with novel "coral reef-like" structures have successfully developed to improve the mechanical properties. By incorporating green asphalt-based microporous organic polymer (AMOP) into polycarbonate (PC) via melting mixing, AMOP/PC achieved improvements in better compatibility, lower complex viscosity and higher T-g due to the lubricant and physical adsorption effects of AMOP. Then AMOP/PC microcellular foams were prepared via supercritical CO2 batch foaming. The good compatibility between AMOP and PC facilitated the formation of "coral reef-like" structures during the foaming process, ascribed to strong interfacial bond between AMOP and PCMF matrix. Due to the toughening and strengthening effects of "coral reef-like" structures, the impact and compressive strength of AMOP/PCMF with 1.5 wt% AMOP achieved 3.2 and 1.2 times increases when PCMF used as control. This study paved a facile approach to fabricate novel "coral reeflike" structures of microcellular foams and extended the application of asphalt-based microporous organic polymer.

• 单位
  厦门大学