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1,918 Newest Publications in macromolecular chemistry and physics

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Significant Improvement on Polybenzoxazine Toughness Achieved by Amine/Benzoxazine Copolymerization‐Induced Phase Separation

15-Jan-2018 | Yang Zhao, Yazhen Xu, Qingbo Xu, Feiya Fu, Yanyan Zhang, Takeshi Endo, Xiangdong Liu, Macromolecular Chemistry and Physics, 2018

Abstract Two commercially available amines, octanediamine (ODM) and m‐xylylenediamine (MXDM), are chosen for tough polybenzoxazine resin due to their controllable capability to cause phase separation during the copolymerization with benzoxazine monomers. The toughening behavior and phase ...

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Magnetically Actuated Rolling of Star‐Shaped Hydrogel Microswimmer

11-Jan-2018 | Narisu Hu, Lefeng Wang, Wenhe Zhai, Mengmeng Sun, Hui Xie, Zhiguang Wu, Qiang He, Macromolecular Chemistry and Physics, 2018

Abstract A magnetically powered, star‐shaped poly(vinylalcohol)/alginate (PVA/ALG) hydrogel microswimmer is described as a biodegradable motile vehicle for potential biomedical applications. The star‐shaped microswimmer is fabricated by the addition of a mixture containing PVA, ALG, and ...

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About the Art and Science of Visualizing Polymer Morphology using Transmission Electron Microscopy

11-Jan-2018 | Sylvie Tencé‐Girault, Vincent Woehling, Evdokia K. Oikonomou, Szilvia Karpati, Sophie Norvez, Macromolecular Chemistry and Physics, 2018

Abstract Transmission electron microscopy (TEM) is a unique tool to visualize polymer morphology: an intimate organization of the matter, encompassing crystalline features in semicrystalline polymers and a kaleidoscopic collection of patterns produced by microseparated phases in polymer ...

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Core/Shell Polystyrene/Magnetite Hybrid Nanoparticles Fabricated by Pickering Emulsion Polymerization and Their Magnetorheological Response

11-Jan-2018 | Hyun Sik Chae, Shang Hao Piao, Wen Jiao Han, Hyoung Jin Choi, Macromolecular Chemistry and Physics, 2018

Abstract Soft‐magnetic polystyrene (PS)/Fe3O4 core/shell composite nanoparticles are fabricated by surfactant‐free Pickering emulsion polymerization using Fe3O4 nanoparticles as a solid stabilizer. The morphology of the synthesized PS/Fe3O4 particles consisting of a PS surface coated with ...

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Characterization of Natural Rubber End Groups Using High‐Sensitivity NMR

11-Jan-2018 | Takehiro Kitaura, Masatoshi Kobayashi, Lucksanaporn Tarachiwin, Hathainat Kum‐ourm, Ai Matsuura, Kazuhisa Fushihara, ..., Macromolecular Chemistry and Physics, 2018

Abstract The chemical structures of natural rubber (NR) end groups are investigated by combining chemical treatments and sensitivity‐enhanced modern nuclear magnetic resonance (NMR) spectroscopy instruments equipped with a cryoprobe. The obtained 1H NMR spectrum of the α‐end has improved ...

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Design, Synthesis, and Photophysical Property of Strongly Fluorescent Benzofuran–Ethynylene Copolymer

11-Jan-2018 | Chih‐Hsien Chen, Zi‐Huan Luo, Kaiting Tan, Macromolecular Chemistry and Physics, 2018

Abstract A novel alternating benzofuran–ethynylene copolymer is designed and synthesized through a series of palladium‐catalyzed reactions, and extremely strong fluorescence is observed. The electronic levels of frontier orbitals are estimated by electrochemical and photophysical measurements ...

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Manipulating the Surface Structure of Hybrid UV Curable Coatings through Photopolymerization‐Induced Phase Separation: Influence of Inorganic Portion and Photoinitiator Content

29-Dec-2017 | Mohsen Mohammad Raei Nayini, Saeed Bastani, Siamak Moradian, Céline Croutxé‐Barghorn, Xavier Allonas, Macromolecular Chemistry and Physics, 2017

Abstract Surface topography and phase‐manipulated distribution of hybrid UV curable coatings is performed. Accordingly, phase separation is controlled by changing the inorganic/organic ratio and the photoinitiator content as these are the main thermodynamic and kinetic affecting factors, ...

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Confined and Directed Polymer Crystallization at Curved Liquid/Liquid Interface

29-Dec-2017 | Mark C. Staub, Christopher Y. Li, Macromolecular Chemistry and Physics, 2017

Abstract Spherical crystals are ubiquitous in nature and the necessary breaks in translational symmetry not seen in flat crystals render them structurally unique. Polymer crystals have been shown to exhibit nonflat morphologies, but control over their formation is difficult to achieve. One ...

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Surface Properties and Antimicrobial Activity of Poly(sulfur‐co‐1,3‐diisopropenylbenzene) Copolymers

29-Dec-2017 | Zhuoling Deng, Alexander Hoefling, Patrick Théato, Karen Lienkamp, Macromolecular Chemistry and Physics, 2017

Abstract Poly(sulfur‐co‐1,3‐diisopropenyl benzene) copolymers with varying compositions are synthesized from elemental sulfur and 1,3‐diisopropenyl benzene by melt polymerization. The resulting polymers are spin‐coated onto silicon wafers, and their thin‐film properties (thickness, surface ...

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Electrically Detected Magnetic Resonance Observations of Spin‐Dependent Space‐Charge‐Limited Conduction in Regioregular Poly(3‐Hexylthiophene)

27-Dec-2017 | Kunito Fukuda, Naoki Asakawa, Macromolecular Chemistry and Physics, 2017

Abstract Pauli spin blockade associated with bipolaron formation from positively charged mobile and trapped polarons in a regioregular poly(3‐hexylthiophene‐2,5‐diyl) (RR‐P3HT) Schottky barrier diode is detected using electrically detected magnetic resonance (EDMR) spectroscopy. This is the ...

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