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479 Newest Publications about the topic solution

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Core-Liquid-Induced Transition from Coaxial Electrospray to Electrospinning of Low-Viscosity Poly(lactide-co-glycolide) Sheath Solution

12-11-2014 | C. J. Luo; M. Edirisinghe, Macromolecules, 2014

Co-electrospinning has demonstrated that polymer solutions below the entanglement concentration can be made into fibers as an encapsulated core in an electrospinnable sheath solution containing a carrier/template polymer. The carrier polymer may require removal at a later stage. This work shows ...

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Effect of Isomerism on Molecular Packing and Gas Transport Properties of Poly(benzoxazole-co-imide)s

11-11-2014 | Yongbing Zhuang; Jong Geun Seong; Yu Seong Do; Hye Jin Jo; Moon Joo Lee; Gang Wang; Michael D. Guiver; Young Moo Lee, Macromolecules, 2014

A facile approach to synthesize poly(benzoxazole-co-imide)s without thermal rearrangement at high temperature is proposed. Poly(benzoxazole-co-imide)s with improved mechanical and solution-processable properties were prepared through polycondensation of 4,4′-(hexafluoroisopropylidene) diphthalic ...

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Multiresponsive Microcapsules Based on Multilayer Assembly of Star Polyelectrolytes

10-11-2014 | Weinan Xu; Petr A. Ledin; Felix A. Plamper; Christopher V. Synatschke; Axel H. E. Müller; Vladimir V. Tsukruk, Macromolecules, 2014

Star polyelectrolytes (poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA)) with dual (temperature and pH) responsive properties were utilized to fabricate multiresponsive microcapsules via layer-by-layer (LbL) assembly. The LbL microcapsules are very robust and uniform, with higher stability and ...

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Heating and Annealing Induced Structural Reorganization and Embrittlement of Solution-Crystallized Poly(l-lactic acid)

06-11-2014 | Pengju Pan; Lili Han; Guorong Shan; Yongzhong Bao, Macromolecules, 2014

Macromolecules DOI: 10.1021/ma501956f

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Specific Interactions of Ag+ Ions with Anionic Polyacrylate Chains in Dilute Solution

05-11-2014 | A. Ezhova; K. Huber, Macromolecules, 2014

A detailed light scattering investigation is presented on dilute solutions of two long-chain sodium polyacrylates (NaPA) in the presence of monovalent Ag+ ions in 0.01 M NaNO3 aqueous solution at a pH of 9. The relevance for the investigation is based on two features: (i) despite its monovalency, ...

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Studying the Interactions of Polyethylene with Graphite in the Presence of Solvent by High Temperature Thermal Gradient Interactive Chromatography, Thermal Gradient Nuclear Magnetic Resonance Spectroscopy, and Solution Differential Scanning Calorimetry

05-11-2014 | D. Mekap; F. Malz; R. Brüll; Z. Zhou; R. Cong; A. W. deGroot; A. R. Parrott, Macromolecules, 2014

High temperature thermal gradient interactive chromatography (HT-TGIC or TGIC) has emerged as an important analytical tool to determine the comonomer content distribution (CCD) present in copolymers of polyethylene (PE). The method separates the macromolecules according to the differences in ...

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Stimuli-Responsive Tertiary Amine Functional PEGs Based on N,N-Dialkylglycidylamines

03-11-2014 | Jana Herzberger; Dennis Kurzbach; Mathias Werre; Karl Fischer; Dariush Hinderberger; Holger Frey, Macromolecules, 2014

Amine-functional poly(ethylene glycol) (PEG) copolymers have been prepared that exhibit thermo- and pH- responsive behavior in aqueous solution. Three novel tertiary di(n-alkyl)glycidylamine monomers have been introduced for anionic ring-opening copolymerization (AROcP) with ethylene oxide (EO): ...

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Stereoselectivity Switch between Zinc and Magnesium Initiators in the Polymerization of rac-Lactide: Different Coordination Chemistry, Different Stereocontrol Mechanisms

03-11-2014 | Haobing Wang; Yang Yang; Haiyan Ma, Macromolecules, 2014

The preparation and characterization of several zinc and magnesium complexes bearing chiral aminophenolate ligands, [(S)- or (R)-L]ZnN(SiMe3)2 (1, 2), [(S)- or (R)-L]ZnOtBu (3, 4) and [(S)- or (R)-L]MgN(SiMe3)2 (5, 6) ((S)- or (R)-L = (S)- or ...

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Controlled Cyclopolymerization of Difunctional Vinyl Monomers in Coordination Nanochannels

28-10-2014 | Takashi Uemura; Ryo Nakanishi; Tetsuya Kaseda; Noriyuki Uchida; Susumu Kitagawa, Macromolecules, 2014

Radical cyclopolymerization of difunctional monomers based on 1,6-diene components was performed in one-dimensional channels of porous coordination polymers (PCPs). Although bulk or solution polymerization of the monomers usually gives cross-linked insoluble polymers, the unfavorable interpolymer ...

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Counterion-Induced UCST for Polycations

28-10-2014 | Erno Karjalainen; Vladimir Aseyev; Heikki Tenhu, Macromolecules, 2014

A method to promote upper critical solution temperature (UCST) type of behavior for polycations is introduced. This relies on in situ introduction of a hydrophobic anion to an aqueous solution of a polycation in the presence of sufficient ionic strength. This was studied using two polycations: ...

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