Macromolecular Chemistry and Physics
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Recently Published Articles
- The Influence of RAFT on the Microstructure and the Mechanical Properties of Photopolymerized Poly(butyl acrylate) Networks
Rouven Henkel and Philipp Vana
Article first published online: 10 DEC 2013 | DOI: 10.1002/macp.201300581
Networks of butyl acrylate are photopolymerized both in the presence and absence of an RAFT agent. The Young's moduli of the RAFT networks are lower than those of the conventionally obtained networks. With an increasing amount of RAFT agent, the Young's modulus decreases and the strain at break values increase, respectively. The network density, the apparent molar mass of the network chains, and the swelling show significant differences between RAFT networks and conventionally obtained networks.
- Surface-Initiated RAFT/MADIX Polymerization on Xanthate-Coated Iron Oxide Nanoparticles
Agnieszka Z. Wilczewska and Karolina H. Markiewicz
Article first published online: 10 DEC 2013 | DOI: 10.1002/macp.201300400
Magnetite–polymer core–shell structures are materials that hold significant promise for the development of many branches of science and industry. The reversible addition-fragmentation chain transfer/macromolecular design via interchange of xanthates (RAFT/MADIX) polymerization is an easy way to obtain stable polymer-coated magnetic nanoparticles (MNPs) with controlled architecture and composition of the organic shell, and therefore with controlled properties of the target nanostructures.
- Effects of Molecular Architecture on the Stereocomplex Crystallization in Poly(lactic acid) Blends
Sahas R. Rathi, David Ng, E. Bryan Coughlin, Shaw Ling Hsu, Charles S. Golub, Gerald H. Ling and Michael J. Tzivanis
Article first published online: 9 DEC 2013 | DOI: 10.1002/macp.201300589
The crystallization behavior of two co-crystallizing poly(l-lactic acid) (PLLA)-based blends is studied. The different densities of the crystallites formed demonstrate that the stereocomplex crystallization is significantly slower in the triblock copolymer blend in comparison with the homopolymer blends.
- Mechanism and Kinetics of Dithiobenzoate-Mediated RAFT Polymerization – Status of the Dilemma
Article first published online: 9 DEC 2013 | DOI: 10.1002/macp.201300562
Developments in the understanding of the mechanism and kinetics of dithiobenzoate-mediated reversible addition-fragmentation chain-transfer (RAFT) polymerization over the period 2006–2013 are critically assessed with specific reference to choice of reagents and polymerization conditions, reagent and product stability, side reactions and factors that may lead to retardation.
- Crystallization of Poly(vinylidene fluoride) in Blends with Poly(methyl methacrylate-co-methacrylic acid) Copolymers
Forrest A. Landis, Stephen R. March Jr., Dakshinamoorthy Deivasagayam and Robert T. Mathers
Article first published online: 6 DEC 2013 | DOI: 10.1002/macp.201300535
Blends of poly(methyl methacrylate-co-methacrylic acid) (PMMA-co-MAA) copolymers are synthesized and blended with poly(vinylidene fluoride) (PVDF). It is observed that the crystallization rate of PVDF is reduced when the MAA content is <5.5 mol% in the copolymer due to enhanced intermolecular interactions. At higher MAA contents, the growth of the PVDF crystallites in the blend approach that of pure PVDF.