Crystallization-driven sphere-to-rod transition of poly(lactide)-b-poly(acrylic acid) diblock copolymers: mechanism and kinetics

Soft Matter ◽  
2012 ◽  
Vol 8 (28) ◽  
pp. 7408 ◽  
Author(s):  
Nikos Petzetakis ◽  
David Walker ◽  
Andrew P. Dove ◽  
Rachel K. O'Reilly
Keyword(s):  
Acrylic Acid ◽  
Diblock Copolymers ◽  
Mechanism And Kinetics ◽  
Poly Acrylic Acid

Polymethylene-b-poly (acrylic acid) diblock copolymers: Aggregation and crystallization in the presence of CaCl2

2017 ◽  
Vol 95 ◽  
pp. 174-185 ◽  
Author(s):  
Qian He ◽  
Jia Ren ◽  
Junkai Ren ◽  
Kanglei Pang ◽  
Zhi Ma ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Diblock Copolymers ◽  
Poly Acrylic Acid

Well-defined amphiphilic polymethylene-b-poly(acrylic acid) diblock copolymers: New synthetic strategy and their self-assembly

2012 ◽  
Vol 50 (17) ◽  
pp. 3641-3647 ◽  
Author(s):  
Hui-Chao Lu ◽  
Yang Xue ◽  
Qiao-Ling Zhao ◽  
Jin Huang ◽  
Shen-Gang Xu ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Synthetic Strategy ◽  
Poly Acrylic Acid

scholarly journals In Situ Nitroxide-Mediated Polymerized Poly(acrylic acid) as a Stabilizer/Compatibilizer Carbon Nanotube/Polymer Composites

2007 ◽  
Vol 2007 ◽  
pp. 1-12 ◽  
Author(s):  
Vitaliy Datsyuk ◽  
Laurent Billon ◽  
Christelle Guerret-Piécourt ◽  
Sylvie Dagréou ◽  
Nicolas Passade-Boupatt ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Acrylic Acid ◽  
Polymer Composites ◽  
Diblock Copolymers ◽  
Polymer Network ◽  
Electron Microscopies ◽  
Transmission Electron ◽  
Wide Range ◽  
Poly Acrylic Acid

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).

From cylindrical to spherical nanosized micelles by self-assembly of poly(dimethylsiloxane)-b-poly(acrylic acid) diblock copolymers

2016 ◽  
Vol 73 (8) ◽  
pp. 2129-2146 ◽  
Author(s):  
Radostina Kalinova ◽  
T. Chinh Ngo ◽  
Rosica Mincheva ◽  
Roberto Lazzaroni ◽  
Philippe Leclère ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Poly Acrylic Acid

scholarly journals Synthesis of Amphiphilic Polystyrene-b-Poly(acrylic acid) Diblock Copolymers by Iodide-Mediated Radical Polymerization

2006 ◽  
Vol 38 (4) ◽  
pp. 387-394 ◽  
Author(s):  
Bingyi Li ◽  
Yan Shi ◽  
Wanchao Zhu ◽  
Zhifeng Fu ◽  
Wantai Yang
Keyword(s):  
Acrylic Acid ◽  
Radical Polymerization ◽  
Diblock Copolymers ◽  
Poly Acrylic Acid

scholarly journals Ln3+-Induced Diblock Copolymeric Aggregates for Fully Flexible Tunable White-Light Materials

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 363 ◽  
Author(s):  
Xinzhi Wang ◽  
Jianguo Tang ◽  
Guanghui Wang ◽  
Wei Wang ◽  
Junjie Ren ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
White Light ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Nano Particles ◽  
Hybrid Nanoparticles ◽  
Cross Linking ◽  
High Emission ◽  
Amphiphilic Diblock Copolymers ◽  
Poly Acrylic Acid

In this research contribution, nano-aggregates have been fabricated by introducing lanthanide (Ln3+) ions into solutions of amphiphilic diblock copolymers of polystyrene-b-poly (acrylic acid) (PS-b-PAA). The coordination of acrylic acid segments to lanthanide cations induces diblock copolymer (BCPs) self-assembly in order to design stable white luminescent hybrid nanoparticles with fine uniform particle size. The introduction of Ln3+ ions (Eu3+ and Tb3+) bestows the micelles, precisely white light, upon excitation of 342 nm. Lanthanide coordination cross-linking of poly (acrylic acid) segments, or blocks, endows the micelles higher thermal stability than that of BCPs micelles without cross-linking. As the most important key point of this work, the regular and stable nano-particles with high emission quality can make fully flexible electroluminescent devices with self-formation or uncoordinated into polymer hosts. Instead of inorganic luminescent nanoparticles with hard cores, this method can potentially apply for fully flexible white-light emitting diodes (FFWLEDs).

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