Macromolecular Chemistry and Physics
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- 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.
- In Vitro Platelet Adhesion of PNaAMPS/PAAm and PNaAMPS/PDMAAm Double-Network Hydrogels
Wen Jiang Zheng, Zhen Qi Liu, Feng Xu, Jie Gao, Yong Mei Chen, Jian Ping Gong and Yoshihito Osada
Article first published online: 23 JAN 2015 | DOI: 10.1002/macp.201400481
Human platelet adhesion on the surface of double-network (DN) hydrogels is investigated under static conditions in vitro. The numbers of adherent platelet on poly (sodium 2-acrylamido-2-methyl-propanesulfonate) (PNaAMPS)/poly acrylamide (PAAm) and PNaAMPS/poly (N,N'-dimethylacrylamide) (PDMAAm) hydrogels are far less than that on the polyethylene terephthalate (PET) and the negatively charged PNaAMPS hydrogels. The platelet adhesion is affected by the chemical component, zeta potential, and serum proteins adsorption of the hydrogel.
- Synthesis, Photophysical, and Morphological Properties of Azomethine-Persylilated α-Cyclodextrin Main-Chain Polyrotaxane
Aurica Farcas, Ana-Maria Resmerita, Pierre-Henri Aubert, Indrajit Ghosh, Sophie Cantin and Werner M. Nau
Article first published online: 23 JAN 2015 | DOI: 10.1002/macp.201400543
Host–guest complexation of azomethine backbones into TMS-αCD cavities leads to improvement of the solubility and better film-forming ability associated with a smoother surface and lower root-mean-square roughness.
- Tunable Morphology and Hydrophobicity of Polyfluoroacrylate/Clay Nanocomposite Prepared by In Situ RAFT Polymerization in Miniemulsion
Arindam Chakrabarty and Nikhil K Singha
Article first published online: 22 JAN 2015 | DOI: 10.1002/macp.201400499
Nanoclay is armored on poly (2,2,3,3,4,4,4-heptafluoro butyl acrylate) (PHFBA) particles, with 2-acryloxy ethyl trimethyl ammonium chloride (AETAC) used as comonomer. The nanocomposite armored with nanoclay show very high water contact angle of 128.1° compared to the nanocomposite, where nanoclay is encapsulated in presence of poly(ethylene glycol) methyl ether methacrylate (PEGMEMA) as comonomer.