Macromolecular Chemistry and Physics
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Materials Science Weekly Newsletter
Recently Published Articles
- Nanomechanics and Origin of Rubber Elasticity of Novel Nanostructured Thermoplastic Elastomeric Blends Using Atomic Force Microscopy
Shib Shankar Banerjee, Kotnees Dinesh Kumar, Arun K. Sikder and Anil K. Bhowmick
Article first published online: 6 JUL 2015 | DOI: 10.1002/macp.201500173
The PeakForce atomic force microscopy technique was performed on novel nanostructured thermoplastic elastomeric blends to quantify elastic modulus and adhesion force of rubber, plastics and their interfaces. It is observed for the first time that a network-like distribution of nanometric rubber ligaments within the plastic matrix is responsible for the origin of rubber elasticity of these blends.
- Dielectric Relaxation Behavior of a Poly(ethylene carbonate)-Lithium Bis-(trifluoromethanesulfonyl) Imide Electrolyte
Joh Motomatsu, Hidekazu Kodama, Takeo Furukawa and Yoichi Tominaga
Article first published online: 6 JUL 2015 | DOI: 10.1002/macp.201500125
Poly(ethylene carbonate)-based electrolytes are promising materials for lithium batteries because of their unique ion-conductive properties. Broadband dielectric spectroscopy is used to investigate the correlation between ionic conductivity and dielectric relaxation, and additionally the FT-IR spectroscopy is used to investigate the conformation of polymer chains with ions. These results clarify the ion-conductive mechanism of novel decoupling polymer electrolyte systems.
- Benzoyl Peroxide/2-Vinylpyridine Synergy in RAFT Polymerization: Synthesis of Poly(2-vinylpyridine) with Low Dispersity at Ambient Temperature
Juxiang Luo, Mingchun Li, Meihua Xin and Weifu Sun
Article first published online: 6 JUL 2015 | DOI: 10.1002/macp.201500156
Redox-initiated reversible addition fragmentation chain transfer polymerization of 2-vinylpyridine at room temperature without a conventional reducing agent has been successfully realized in the presence of only an oxidizing agent, benzoyl peroxide. It is interesting to note that the number-average molecular weight of poly(2-vinylpyridine) increases with monomer conversion while retaining relatively low dispersity.
- Conjugated Polythiophene/Porphyrin Complex for Rapid and Simple Detection of Bacteria in Drinking Water
Wenmin Yan, Hongbo Yuan, Ruihua Li, Yibing Fan, Yong Zhan, Junjie Qi, Hailong An, Ruimin Niu, Gang Li and Chengfen Xing
Article first published online: 3 JUL 2015 | DOI: 10.1002/macp.201500188
A conjugated polymer-based electrostatic complex of anionic polythiophene with cationic porphyrin has been designed for rapid and simple detection of bacteria infection in drinking water by applying fluorescence resonance energy transfer (FRET) strategy. This assay takes advantage of the light-harvesting property of the conjugated polymer and the ratiometric measurements for minimizing the nonspecific binding effect.
- Hysteretic Buckling for Actuation of Magnet–Polymer Composites
Anansa S. Ahmed and Raju V. Ramanujan
Article first published online: 3 JUL 2015 | DOI: 10.1002/macp.201500152
The development of flexible “artificial muscle” actuators is a topic of interest especially for self-assembly and origami engineering applications. This work studies the actuation of magnet–polymer composites in a novel buckling mode. The stress and strain are optimized to obtain a work density comparable to electroactive polymers. This work provides insight into the development of next generation active materials.