Macromolecular Rapid Communications
Copyright © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Editors: Kirsten Severing , Stefan Spiegel
Online ISSN: 1521-3927
Materials Science Weekly Newsletter
Recently Published Articles
- Size-Controlled Fabrication of Polyaniline Microfibers Based on 3D Hydrodynamic Focusing Approach
Imsung Yoo, Simon Song, Kyungchan Uh, Chan Woo Lee and Jong-Man Kim
Article first published online: 17 APR 2015 | DOI: 10.1002/marc.201500068
PANI microfibers are fabricated in a size-controlled manner by taking advantage of a microfluidic technology and organic soluble acid labile t-Boc-protected polyaniline (t-Boc-PANI) as the conducting polymer precursor. Linear PANI microfibers that range from 16.2 to 39.4 μm are readily obtained by changing the flow rate.
- Water-Assisted Vapor Deposition of PEDOT Thin Film
Hilal Goktas, Xiaoxue Wang, Asli Ugur and Karen K. Gleason
Article first published online: 17 APR 2015 | DOI: 10.1002/marc.201500069
Significant differences are found among the poly(3,4-ethylenedioxythiophene) (PEDOT) produced using water-assisted vapor phase polymerization (VPP) and oxidative chemical vapor deposition (oCVD). The conductivity of both PEDOT is enhanced by an order of magnitude with the addition of water vapor. Moreover, while the VPP PEDOT is completely amorphous, the crystallinity of oCVD is improved and a high doped PEDOT obtained with respect to VPP one.
- Slowing Down of Ring Polymer Diffusion Caused by Inter-Ring Threading
Eunsang Lee, Soree Kim and YounJoon Jung
Article first published online: 17 APR 2015 | DOI: 10.1002/marc.201400713
Here, statistics of persistence and exchange times are applied to polymer dynamics to calculate threading times. Average threading time of ring melts increases with the degree of polymerization more rapidly than linear polymer melts. This observation strongly supports that the unthreading event is the most prominent factor in determining the dynamics of ring polymer melts.
- Well-Defined High Molecular Weight Polystyrene with High Rates and High Livingness Synthesized via Two-Stage RAFT Emulsion Polymerization
Kun Yan, Xiang Gao and Yingwu Luo
Article first published online: 17 APR 2015 | DOI: 10.1002/marc.201500052
Highly living polystyrene with over half a million molecular weight and low dispersity is synthesized with monomer conversion reaching over 90% within 10 h via a facile two-stage RAFT emulsion polymerization. The chain transfer constant for a monomer is found to be much lower than the well-accepted values in the conventional radical polymerization.
- SAXS Analysis of Shell Formation During Nanocapsule Synthesis via Inverse Miniemulsion Periphery RAFT Polymerization
Robert H. Utama, Martin Dulle, Stephan Förster, Martina H. Stenzel and Per B. Zetterlund
Article first published online: 17 APR 2015 | DOI: 10.1002/marc.201500096
A combination of inverse miniemulsion periphery RAFT polymerization (IMEPP) and small angle X-ray scattering (SAXS) is used to synthesise and analyse polymeric nanocapsules with various shell arrangements simultaneously. Using the developed SAXS model, the growth rate of the shell, the nanocapsule morphology and the individual shell thickness of concentric shells with different polymeric materials are determined accurately.