Macromolecular Chemistry and Physics
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Recently Published Articles
- Evaluating Relative Chain Orientation of Amylose and Poly(l-lactide) in Inclusion Complexes Formed by Vine-Twining Polymerization Using Primer–Guest Conjugates
Tomonari Tanaka, Shota Sasayama, Kazuya Yamamoto, Yoshiharu Kimura and Jun-ichi Kadokawa
Article first published online: 1 FEB 2015 | DOI: 10.1002/macp.201400603
The relative chain orientation of amylose and poly(l-lactide) (PLLA) in inclusion complexes formed by vine-twining polymerization is made clear, by using primer–guest conjugates. The cavity of amylose includes PLLA, but not poly(d-lactide), regardless of the chain orientation of polylactide on the polymerization system.
- Enhanced Performance of Graphene–Epoxy Flexible Capacitors by Means of Ceramic Fillers
Marco Sangermano, Gianfranco Buzzerio, Rita Rizzoli, Luca Ortolani, Vittorio Morandi, Fabrizio Pirri and Alessandro Chiolerio
Article first published online: 30 JAN 2015 | DOI: 10.1002/macp.201400588
Graphene–epoxy flexible capacitors are prepared by graphene–polymer transfer and bonding via UV-cured epoxy adhesive. Ceramic fillers are dispersed into the epoxy resin with the aim of enhancing the capacitive behavior of the final device. Nanoparticle-filled parallel plate capacitors are shown to have superior performance, up to two orders of magnitude better than unfilled samples.
- Synthesis of Novel Chain-End-Functionalized Polyethylenes via Thiol-ene Click Chemistry
Ying Li, Yongjie Zhang, Qian Li, Huayi Li, Shuirong Zheng and Youliang Hu
Article first published online: 29 JAN 2015 | DOI: 10.1002/macp.201400454
A library of low-molecular-weight, narrow-molecular-weight-distribution chain-end-functionalized polyethylenes (Cef-PEs) is prepared highly selectively and efficiently by thiol-ene addition of vinyl-terminated polyethylene (v-PE) with mercaptans under mild conditions. The conversions of all the reactions are up to 95%–100%. All the Cef-PEs are characterized by NMR, GPC, DSC, FT-IR, and TGA. It is found that alkaline mercaptans and solvents were adverse to the thiol-ene click reactions.
- Quantitatively Probing Cross-Termination in RAFT Polymerization by an Externally Applied Magnetic Field
Ling Lv, Jian Zhou, Gang Zou and Qijin Zhang
Article first published online: 27 JAN 2015 | DOI: 10.1002/macp.201400531
Bulk reversible addition-fragmentation chain transfer polymerizations (RAFTPs) of styrene (St) are performed, mediated by (2-cyano-2-propyl)dithiobenzoate (CPDB) and S-1-dodecyl-S-(α, α′-dimethyl-α′′-acetic acid)trithiocarbonate (DDMAT) under different magnetic field strengths. A quantitative parameter RM is proposed to evaluate the polymerization rate retardation due to cross-termination. Calculated RM values for CPDB- and DDMAT-mediated bulk RAFTP of St demonstrate an efficient way to probe cross-termination in situ.
- Supramolecular Assembly-Assisted Synthesis of Responsive Polymeric Materials with Controlled Chain Topologies
Jinming Hu and Shiyong Liu
Article first published online: 26 JAN 2015 | DOI: 10.1002/macp.201400578
Recent advances concerning the fabrication of stimuli-responsive polymeric materials under the assistance of supramolecular self-assembly are summarized. The templated synthesis of linear (multiblock) copolymers, non-linear shaped copolymers, as well as crosslinked nanostructures on the basis of supramolecular assemblies is discussed.