10.05.2013 | Laure Biniek; Nicolas Leclerc; Thomas Heiser; Rony Bechara; Martin Brinkmann, Macromolecules, 2013

A large-scale alignment method is used to orient the conjugated polymer poly(2,5-bis(3-dodecyl-2-yl)thieno[3,2-b]thiophene) (C12-pBTTT). This fast one-step alignment method does not use any alignment layer and does not necessarily require postalignment annealing of the films. It exploits the ...

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09.05.2013 | Daniel Fragiadakis; James Runt, Macromolecules, 2013

Dielectric relaxation spectroscopy was used to investigate the molecular dynamics of model segmented polyurethane copolymers having identical hard segments and hard segment weight fractions, but with four different soft segment chemistries of particular interest in biomedical devices. All ...

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06.05.2013 | Yu Kyung Jung; Min Hee Park; Hyo Jung Moon; Usha Pramod Shinde; Byeongmoon Jeong, Macromolecules, 2013

Compared with unmodified F127, the concentration range exhibiting sol–gel transition increased for the CL4-F127-CL4 (F-CL4); however, it decreased for the CL12-F127-CL12 (F-CL12), even though both F-CL4 and F-CL12 were hydrophobically modified by the oligocaprolactone (OCL). To understand the ...

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06.05.2013 | Kevin A. Payne; Dagmar R. D’hooge; Paul H. M. Van Steenberge; Marie-Françoise Reyniers; Michael F. Cunningham; Robin ..., Macromolecules, 2013

A comprehensive kinetic Monte Carlo (kMC) model is used to interpret and better understand the results of a systematic experimental investigation of activators regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP) of butyl methacrylate (BMA) using Sn(EH)2 as ...

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03.05.2013 | Qi Zhong; Ezzeldin Metwalli; Monika Rawolle; Gunar Kaune; Achille M. Bivigou-Koumba; André Laschewsky; Christine M. ..., Macromolecules, 2013

Thin thermoresponsive films of the triblock copolymer polystyrene-block-poly(methoxydiethylene glycol acrylate)-block-polystyrene (P(S-b-MDEGA-b-S)) are investigated on silicon substrates. By spin-coating, homogeneous and smooth films are prepared for a range of film thicknesses from 6 to 82 ...

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02.05.2013 | Hao Sun; Konstantinos Ntetsikas; Apostolos Avgeropoulos; Shi-Qing Wang, Macromolecules, 2013

In rheological characterization of polymeric materials, the time–temperature superposition (TTS) principle allows us to acquire a wider spectrum of information on polymer dynamics. Although there are reports of the failure of TTS when both chain dynamics and local segmental dynamics are ...

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02.05.2013 | Ying Shi; Mitra Yoonessi; R. A. Weiss, Macromolecules, 2013

High switching temperature shape memory polymers (SMPs) were developed from metal salts of sulfonated PEEK (M-SPEEK) ionomer and composites of the M-SPEEK ionomers and a fatty acid salt. The neat M-SPEEK ionomers exhibited reasonable shape memory behavior, but the composite SMPs showed very ...

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01.05.2013 | Zhilong Su; Bing Yu; Xuesong Jiang; Jie Yin, Macromolecules, 2013

We herein demonstrated a novel multiresponsive fluorescent nanorod based on C60, which is fabricated through the versatile coassembly of fullerene C60 and anthracene-ended hyperbranched poly(ether amine) (AN-hPEA). The supramolecular nanorods (C60@AN-hPEA) can be further cross-linked through ...

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25.04.2013 | J. H. Daly; D. Hayward; R. A. Pethrick, Macromolecules, 2013

The variation of the viscosity as a function of the degree of conversion for an anhydride cured epoxy resin is modeled using a combination of a Monte Carlo statistical model of the polymerization process and constitutive equations describing the motion of the entities in the mix. The degree ...

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24.04.2013 | Joke Vandenbergh; Thomas Junkers, Macromolecules, 2013

Macromonomers are synthesized from thermal reactivation of three different precursors, Poly(n-butyl acrylate) P(nBuA), Poly(tert-butyl acrylate) P(tBuA), and Poly(2-ethylhexyl acrylate) P(EHA), synthesized via nitroxide mediated polymerization (NMP). Reactivation of the polymer chains is ...

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