Micro and nano cellular amorphous polymers (PMMA, PS) in supercritical CO2 assisted by nanostructured CO2-philic block copolymers – One step foaming process

2011 ◽  
Vol 58 (1) ◽  
pp. 168-176 ◽  
Author(s):  
Jose Antonio Reglero Ruiz ◽  
Matthieu Pedros ◽  
Jean-Marc Tallon ◽  
Michel Dumon
Keyword(s):  
Block Copolymers ◽  
Supercritical Co2 ◽  
Amorphous Polymers ◽  
Foaming Process ◽  
One Step

One-Step Formation of Functionalized Block Copolymers

2000 ◽  
Vol 33 (5) ◽  
pp. 1505-1507 ◽  
Author(s):  
Didier Benoit ◽  
Craig J. Hawker ◽  
Elbert E. Huang ◽  
Zhiqun Lin ◽  
Thomas P. Russell
Keyword(s):  
Block Copolymers ◽  
One Step

One-step synthesis of poly(2-oxazoline)-based amphiphilic block copolymers using a dual initiator for RAFT polymerization and CROP

Polymer ◽  
2014 ◽  
Vol 55 (23) ◽  
pp. 5986-5990 ◽  
Author(s):  
Young Chang Yu ◽  
Hang Sung Cho ◽  
Woong-Ryeol Yu ◽  
Ji Ho Youk
Keyword(s):  
Block Copolymers ◽  
Raft Polymerization ◽  
Amphiphilic Block Copolymers ◽  
One Step

scholarly journals High Performance Attapulgite/Polypyrrole Nanocomposite Reinforced Polystyrene (PS) Foam Based on Supercritical CO2 Foaming

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 985 ◽  
Author(s):  
Yidong Liu ◽  
Lingfeng Jian ◽  
Tianhua Xiao ◽  
Rongtao Liu ◽  
Shun Yi ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
High Performance ◽  
In Situ Polymerization ◽  
Compression Modulus ◽  
Blowing Agents ◽  
Foaming Process ◽  
Potential Applications ◽  
Polymerization Method ◽  
Low Solubility

CO2 has been regarded as one of the most promising blowing agents for polystyrene (PS) foam due to its non-flammability, low price, nontoxicity, and eco-friendliness. However, the low solubility and fast diffusivity of CO2 in PS hinder its potential applications. In this study, an attapulgite (ATP)/polypyrrole (PPy) nanocomposite was developed using the in situ polymerization method to generate the hierarchical cell texture for the PS foam based on the supercritical CO2 foaming. The results demonstrated that the nanocomposite could act as an efficient CO2 capturer enabling the random release of it during the foaming process. In contrast to the pure PS foam, the ATP/PPy nanocomposite reinforced PS foam is endowed with high cell density (up to 1.9 × 106) and similar thermal conductivity as the neat PS foam, as well as high compression modulus. Therefore, the in situ polymerized ATP/PPy nanocomposite makes supercritical CO2 foaming desired candidate to replace the widely used fluorocarbons and chlorofluorocarbons as PS blowing agents.

Organic Lewis pairs for selective copolymerization of epoxides with anhydrides to access sequence-controlled block copolymers

2019 ◽  
Vol 21 (22) ◽  
pp. 6123-6132 ◽  
Author(s):  
He-Yuan Ji ◽  
Dong-Po Song ◽  
Bin Wang ◽  
Li Pan ◽  
Yue-Sheng Li
Keyword(s):  
Block Copolymers ◽  
One Step ◽  
Lewis Pairs

A selective copolymerization strategy is developed for one-step precise synthesis of diverse poly(ester-block-ether)s from bio-based epoxides and anhydrides by using organocatalysts.

Supercritical CO2 deposition and foaming process for fabrication of biopolyester-ZnO bone scaffolds

2017 ◽  
Vol 135 (7) ◽  
pp. 45824 ◽  
Author(s):  
Jasna Ivanovic ◽  
Kurosch Rezwan ◽  
Stephen Kroll
Keyword(s):  
Supercritical Co2 ◽  
Bone Scaffolds ◽  
Foaming Process

Temperature Variation Enables the Design of Biobased Block Copolymers via One‐Step Anionic Copolymerization

2020 ◽  
pp. 2000513 ◽  
Author(s):  
Jennifer Bareuther ◽  
Martina Plank ◽  
Björn Kuttich ◽  
Tobias Kraus ◽  
Holger Frey ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Temperature Variation ◽  
One Step ◽  
Anionic Copolymerization
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