Exfoliation and distribution behavior of graphene nanoplatelets in polystyrene-based foams fabricated by supercritical CO2 assisted microcellular foaming

2021 ◽  
pp. 117331
Author(s):  
Guoquan Liu ◽  
Shuai Wen ◽  
Yongfeng Wang ◽  
Jingjing Zhang ◽  
Shijun Huang ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Graphene Nanoplatelets ◽  
Microcellular Foaming ◽  
Distribution Behavior

Microcellular foaming of arabinoxylan and PEGylated arabinoxylan with supercritical CO2

2018 ◽  
Vol 181 ◽  
pp. 442-449 ◽  
Author(s):  
Linda Härdelin ◽  
Anna Ström ◽  
Ernesto Di Maio ◽  
Salvatore Iannace ◽  
Anette Larsson
Keyword(s):  
Supercritical Co2 ◽  
Microcellular Foaming

Effect of soft segment molecular weight on the microcellular foaming behavior of TPU using supercritical CO2

2020 ◽  
Vol 160 ◽  
pp. 104816 ◽  
Author(s):  
Mohammadreza Nofar ◽  
Bige Batı ◽  
Emine Büşra Küçük ◽  
Amirjalal Jalali
Keyword(s):  
Molecular Weight ◽  
Supercritical Co2 ◽  
Soft Segment ◽  
Microcellular Foaming ◽  
Foaming Behavior

scholarly journals The Effect of Microcellular Structure on the Dynamic Mechanical Thermal Properties of High-Performance Nanocomposite Foams Made of Graphene Nanoplatelets-Filled Polysulfone

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 437
Author(s):  
Marcelo Antunes ◽  
Hooman Abbasi ◽  
José Ignacio Velasco
Keyword(s):  
Relative Density ◽  
Supercritical Co2 ◽  
Cellular Structure ◽  
High Performance ◽  
Graphene Nanoplatelets ◽  
Cellular Structures ◽  
Density Range ◽  
Specific Storage ◽  
Glass Transition Temperatures ◽  
Nanocomposite Foams

Polysulfone nanocomposite foams containing variable amounts of graphene nanoplatelets (0–10 wt%) were prepared by water vapor-induced phase separation (WVIPS) and supercritical CO2 (scCO2) dissolution. WVIPS foams with two ranges of relative densities were considered, namely, between 0.23 and 0.41 and between 0.34 and 0.46. Foams prepared by scCO2 dissolution (0.0–2.0 wt% GnP) were obtained with a relative density range between 0.35 and 0.45. Although the addition of GnP affected the cellular structure of all foams, they had a bigger influence in WVIPS foams. The storage modulus increased for all foams with increasing relative density and GnP’s concentration, except for WVIPS PSU-GnP foams, as they developed open/interconnected cellular structures during foaming. Comparatively, foams prepared by scCO2 dissolution showed higher specific storage moduli than similar WVIPS foams (same relative density and GnP content), explained by the microcellular structure of scCO2 foams. As a result of the plasticizing effect of CO2, PSU foams prepared by scCO2 showed lower glass transition temperatures than WVIPS foams, with the two series of these foams displaying decreasing values with incrementing the amount of GnP.

scholarly journals A new promising nucleating agent for polymer foaming: effects of hollow molecular-sieve particles on polypropylene supercritical CO2 microcellular foaming

RSC Advances ◽  
2018 ◽  
Vol 8 (36) ◽  
pp. 20061-20067 ◽  
Author(s):  
Chenguang Yang ◽  
Mouhua Wang ◽  
Zhe Xing ◽  
Quan Zhao ◽  
Minglei Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Molecular Sieve ◽  
Supercritical Co2 ◽  
Nucleating Agent ◽  
Microcellular Foaming ◽  
Polymer Foaming

Hollow molecular-sieve particles were applied as a new nucleating agent in preparing PP foam with outstanding mechanical properties by using scCO2.

Effects of processing parameters and thermal history on microcellular foaming behaviors of PEEK using supercritical CO2

2015 ◽  
Vol 132 (39) ◽  
pp. n/a-n/a ◽  
Author(s):  
Quan Yang ◽  
Guangcheng Zhang ◽  
Zhonglei Ma ◽  
Jiantong Li ◽  
Xiaolong Fan
Keyword(s):  
Thermal History ◽  
Supercritical Co2 ◽  
Processing Parameters ◽  
Microcellular Foaming

Numerical study on the scattering property of porous polymer structures via supercritical CO2 microcellular foaming

2020 ◽  
Vol 59 (14) ◽  
pp. 4533 ◽  
Author(s):  
Shudong Yu ◽  
Jiadong Yu ◽  
Junchi Chen ◽  
Xinrui Ding ◽  
Jiasheng Li ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Numerical Study ◽  
Porous Polymer ◽  
Microcellular Foaming
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