2023年6月14-16日，由汇捷通展览（上海）有限公司、上海市聚氨酯工业协会主办的“第二届发泡材料及应用国际高峰论坛”将在上海新国际博览中心-W3馆举办！届时，100+演讲嘉宾及议题将在3天时间内、2个分会场里围绕和谐共生、应用创新、技术变革三大主题日展开深度交流，共同探讨发泡材料的新技术、新应用、新发展，重新定义发泡材料！

加拿大多伦多大学，加拿大皇家科学学院院士、中国工程学院外籍院士Chul B. Park已确认出席演讲！

演讲预告

TOPIC PREVIEW

Exfoliation of GNP with Supercritical Foaming Technology

In this work, high concentrations of commercial graphene nanoplatelets (GnPs) were effectively exfoliated in polypropylene (PP)/GnP nanocomposites using supercritical CO2 (ScCO2) foaming technology. The electrical conductivity of the solid PP/15wt%-GnP was increased by almost 5 orders of magnitude after ScCO2 treatment.  The foaming pressure was shown to have a critical influence on GnP exfoliation, and the pressure threshold to delaminate graphene layers was significantly reduced in the presence of PP matrix, as compared to GnP powder. The results were attributed to PP chain penetration into GnP under ScCO2, and the prevention of rapid loss of intercalating CO2 by the PP molecules surrounding the GnPs during the pressure release step. This study opens up a new potential avenue for developing highly exfoliated and versatile polymer/graphene solid nanocomposites using supercritical fluid treatment.

嘉宾简介

SPEAKER PROFILE

Prof Chul Park received his PhD from MIT in 1993.  He is Distinguished Professor of Microcellular Engineered Plastics at University of Toronto. He is also the NSERC Senior Industrial Research Chair in Multi-Functional Graphene-Based Polymer Nanocomposites and Foams. He has an international recognition in polymer foam area. He has published more than 1500 papers, including over 470 journal papers and four books with 25,000 Scopus Citations and 84 Scopus H-index. Prof Park serves as Editor-in-Chief for Journal of Cellular Plastics. He has been inducted as an Academician Fellow into 6 academies including the Chinese Academy of Engineering, the Academy of Sciences of the Royal Society of Canada, and the Korean Academy of Science and Technology. He is also a Fellow of 6 other professional societies including the Society of Plastics Engineers.

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