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522 Newest Publications about the topic solution

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Radical Polymerization of Pendant (Meth)acrylates on a Rigid Helical Polyisocyanate Backbone Producing Poly(meth)acrylates with “Ideally” Atactic Main Chain Configuration

22-May-2015 | Atsushi Narumi; Hitomi Baba; Tetsuya Akabane; Yuta Saito; Satoshi Ohno; Daichi Togashi; Kazushi Enomoto; Moriya Kiku ..., Macromolecules, 2015

This study includes a topic that poly(methyl methacrylate) (PMMA) with an “ideally” atactic main chain configuration, approximately triad tacticities of mm/mr/rr = 1/2/1, has been produced in solution by the “one-dimensionally regulated” radical polymerization using rigid helical polyisocyanate ...

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Rehydration of Thermoresponsive Poly(monomethoxydiethylene glycol acrylate) Films Probed in Situ by Real-Time Neutron Reflectivity

22-May-2015 | Qi Zhong; Ezzeldin Metwalli; Monika Rawolle; Gunar Kaune; Achille M. Bivigou-Koumba; André Laschewsky; Christine M. ..., Macromolecules, 2015

The rehydration of thermoresponsive poly(monomethoxydiethylene glycol acrylate) (PMDEGA) films exhibiting a lower critical solution temperature (LCST) type demixing phase transition in aqueous environments, induced by a decrease in temperature, is investigated in situ with real-time neutron ...

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Self-Activation of Poly(methylenelactide) through Neighboring-Group Effects: A Sophisticated Type of Reactive Polymer

19-May-2015 | Judita Britner; Helmut Ritter, Macromolecules, 2015

The present work reports on a reinvestigation of a radical polymerizable lactide derivative since the polymerization properties were only poorly studied in the first publication in 1969. The optically active methylenelactide was polymerized by free radical polymerization in solution using AIBN as ...

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Tunable Encapsulation Structure of Block Copolymer Coated Single-Walled Carbon Nanotubes in Aqueous Solution

15-May-2015 | Youngkyu Han; Suk-kyun Ahn; Zhe Zhang; Gregory S. Smith; Changwoo Do, Macromolecules, 2015

Nanosized and shape-tunable molecular building blocks can provide great opportunities for the fabrication of precisely controlled nanostructures. In this work, we have fabricated a molecular building block of single-walled carbon nanotubes (SWNTs) coated by PPO–PEO–PPO block copolymers whose ...

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Conformation of Hydrophobically Modified Thermoresponsive Poly(OEGMA-co-TFEA) across the LCST Revealed by NMR and Molecular Dynamics Studies

08-May-2015 | Cheng Zhang; Hui Peng; Simon Puttick; James Reid; Stefano Bernardi; Debra J. Searles; Andrew K. Whittaker, Macromolecules, 2015

High-resolution NMR measurements and molecular dynamics (MD) simulations have been applied to the study of thermoresponsive copolymers of poly(ethylene glycol) methyl ether methacrylate (OEGMA) and 2,2,2-trifluoroethyl acrylate (TFEA) (poly(OEGMA-co-TFEA)) synthesized via reversible ...

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Chain Trajectory and Crystallization Mechanism of a Semicrystalline Polymer in Melt- and Solution-Grown Crystals As Studied Using 13C–13C Double-Quantum NMR

06-May-2015 | You-lee Hong; Tadanori Koga; Toshikazu Miyoshi, Macromolecules, 2015

The re-entrance sites, successive chain-folding number ⟨n⟩, and chain-folding fraction ⟨F⟩ of the chain-folding (CF) structure of 13C CH3-labeled isotactic poly(1-butene) (iPB1) with an weight-averaged molecular weight (⟨Mw⟩ = 37 K g/mol) in solution- and melt-grown crystals as a function of ...

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Layered Poly(3-hexylthiophene) Nanowhiskers Studied by Atomic Force Microscopy and Kelvin Probe Force Microscopy

01-May-2015 | Frederick M. McFarland; Benjamin Brickson; Song Guo, Macromolecules, 2015

The optoelectronic properties of organic electronic materials are significantly affected by their molecular packing and local environments. Herein, atomic force microscopy (AFM) is used to characterize nanowhiskers of poly(3-hexylthiphene) (P3HT). The P3HT nanowhiskers form layered structures ...

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Charged Star Diblock Copolymers in Dilute Solutions: Synthesis, Structure, and Chain Conformations

20-Apr-2015 | Sara Bekhradnia; Jakob Stensgaard Diget; Thomas Zinn; Kaizheng Zhu; Sverre Arne Sande; Bo Nyström; Reidar Lund, Macromolecules, 2015

We present a systematic investigation of a novel series of star polymers consisting of arms made up from poly(N-isopropylacrylamide)-b-poly(2-acrylamido-2-methylpropanesulfonate) (PNIPAAM-block-PAMPS) block copolymers. The polymers were synthesized as a 3-arm and 2-arm (i.e., a tetrablock ...

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Highly Efficient Fabrication of Polymer Nanofiber Assembly by Centrifugal Jet Spinning: Process and Characterization

17-Apr-2015 | Liyun Ren; Rahmi Ozisik; Shiva P. Kotha; Patrick T. Underhill, Macromolecules, 2015

Centrifugal jet spinning (CJS) is a highly efficient, low-cost, and versatile method for fabricating polymer nanofiber assemblies, especially in comparison to electrospinning. The process uses centrifugal forces coupled with the viscoelastic properties and the mass transfer characteristics of ...

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Polyelectrolyte Composite: Hyaluronic Acid Mixture with DNA

15-Apr-2015 | Ida Delač Marion; Danijel Grgičin; Krešimir Salamon; Sigrid Bernstorff; Tomislav Vuletić, Macromolecules, 2015

We studied salt-free, highly concentrated (5–200 g/L) mixtures of unfragmented (μm contour length) DNA and hyaluronic acid (HA) as a borderline example of rigid-rod/flexible-chain composite, across a broad range of concentration ratios cHA/cDNA = 0.05–50. By polarizing microscopy, we established ...

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