scholarly journals Polymethylene-b-poly(acrylic acid) diblock copolymers: Morphology and crystallization evolution influenced by polyethyene polyamine with dual confinement effects

Polymer ◽  
2017 ◽  
Vol 108 ◽  
pp. 322-331 ◽  
Author(s):  
Qian He ◽  
Yali Yuan ◽  
Fengxia Chen ◽  
Zhi Ma ◽  
Xingqi Zhu ◽  
...  
2017 ◽  
Vol 95 ◽  
pp. 174-185 ◽  
Author(s):  
Qian He ◽  
Jia Ren ◽  
Junkai Ren ◽  
Kanglei Pang ◽  
Zhi Ma ◽  
...  

2012 ◽  
Vol 50 (17) ◽  
pp. 3641-3647 ◽  
Author(s):  
Hui-Chao Lu ◽  
Yang Xue ◽  
Qiao-Ling Zhao ◽  
Jin Huang ◽  
Shen-Gang Xu ◽  
...  

2007 ◽  
Vol 2007 ◽  
pp. 1-12 ◽  
Author(s):  
Vitaliy Datsyuk ◽  
Laurent Billon ◽  
Christelle Guerret-Piécourt ◽  
Sylvie Dagréou ◽  
Nicolas Passade-Boupatt ◽  
...  

Carbon nanotube (CNT) polymer composites were synthesized via in situ nitroxide-mediated diblock copolymerization. Poly(acrylic acid) (PAA) was chosen as a first block to obtain a precomposite CNT-PAA which is readily dispersible in various solvents including water. The immobilization of the stable poly(acrylic acid) alkoxyamine functionality on the nanotube surface occurs during the synthesis of the first block without CNT prior treatment. The living character of this block is established by spectroscopic methods and the nature of the CNT/PAA interaction is discussed. This living first block offers the opportunity to reinitiate the polymerization of a second block that can be chosen among a wide range of monomers. This versatility is illustrated with a second block containing methyl acrylate (MA) or styrene (S). Scanning and transmission electron microscopies confirm good CNT dispersion in the polymer network, while transmission electron microscopy also spots the anchorage locations of PAA on the CNT surface. Such nanotubes wrapped by diblock copolymers can be dispersed in various polymer matrices to create CNT—polymer composites. Conductivity measurements show that these composites obey a percolation-like power law with a low percolation threshold (less than 0.5 vol%) and a high maximum conductivity (up to 1.5 S/cm at room temperature).


2016 ◽  
Vol 73 (8) ◽  
pp. 2129-2146 ◽  
Author(s):  
Radostina Kalinova ◽  
T. Chinh Ngo ◽  
Rosica Mincheva ◽  
Roberto Lazzaroni ◽  
Philippe Leclère ◽  
...  

Soft Matter ◽  
2012 ◽  
Vol 8 (28) ◽  
pp. 7408 ◽  
Author(s):  
Nikos Petzetakis ◽  
David Walker ◽  
Andrew P. Dove ◽  
Rachel K. O'Reilly

2006 ◽  
Vol 38 (4) ◽  
pp. 387-394 ◽  
Author(s):  
Bingyi Li ◽  
Yan Shi ◽  
Wanchao Zhu ◽  
Zhifeng Fu ◽  
Wantai Yang

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