Separation of the molecular motion from different components or phases using projection moving-window 2D correlation FTIR spectroscopy for multiphase and multicomponent polymers

Zhou, Tao; Zhou, Ting; Zhang, Aiming

doi:10.1039/c4ra16373g

Cited by 13 publications

(3 citation statements)

References 61 publications

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“…Figure 3 demonstrates FTIR (left) and Raman (right) analysis of the grafted carbon allotropes revealing some spectral differences. Regarding the chemical composition analyzed by FTIR, for the CNH-based composite (A), a weak C-H out of plane vibrational deformation corresponding to the cyclic aromatic rings is observed at 670.5 cm -1 [36]. Another vibrational out of plane deformation at 805.1 cm -1 arises from three neighboring H atoms in the aromatic ring attached to the carbon nanohorns [37].…”

Section: Materials Characterizationmentioning

confidence: 99%

Grafting of the carbon allotropes and polypyrrole via a Kevlar-type organic linker: the correlation of carbon structure/morphology with electrochemistry of the composite electrode

Radtke

Ignaszak

2016

Mater Renew Sustain Energy

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This study validates three carbon allotropes, such as carbon nanotubes, graphene and carbon nanohorns that are covalently bound via a Kevlar-type linker (amidebound aryl) with polypyrrole. In the proposed synthesis, the linker moiety is formed onto the carbon surface via combined electrochemical and chemical reactions and the polymer is attached during the final phase. Overall, the highest specific capacitance (*350 F/g) and thermal and electrochemical stability were observed for the MWCNTbased system, followed by Nanohorn-g-PPy (-g-stands for grafted) and the least stable with the smallest capacitance for the Graphene-based composite. The MWCNT-grafted material demonstrated a non-continuous and very thin polypyrrole coating onto the carbon surface. These structures are rigid, stable and reveal good accessibility of ions towards both the carbon and polymer. This system showed also the highest diffusion coefficient for the ion doping owing to the polymer effective diffusion length. The fast degradation of Graphene-g-PPy is associated with the carbon morphology and its high activity towards electrochemical oxygen reduction due to the presence of catalytic sp 2 carbon atoms at the edges of the graphene. The presented work highlights an effect of carbon morphology in designing chemically grafted components for ultra-capacitor electrodes.

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Section: Materials Characterizationmentioning

confidence: 99%

Grafting of the carbon allotropes and polypyrrole via a Kevlar-type organic linker: the correlation of carbon structure/morphology with electrochemistry of the composite electrode

Radtke

Ignaszak

2016

Mater Renew Sustain Energy

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“…The spectra resolution was 4 cm −1 . The generalized 2D correlation analysis was carried out by the 2DCS 6.1 software, developed by Zhou et al 11 …”

Section: Methodsmentioning

confidence: 99%

“…The spectra resolution was 4 cm À1 . The generalized 2D correlation analysis was carried out by the 2DCS 6.1 software, developed by Zhou et al 11 The rubber processing analyzer RPA8000 from Taiwan High Speed Rail Test Instrument Co., Ltd. was used to test the heat curing stage in accordance with GB/T 16584-2009.…”

Section: Characterizationmentioning

confidence: 99%

Highly stretchable dual‐cure photosensitive resin for digital light processing printing

Ren

Deng

Bao

2022

J of Applied Polymer Sci

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The two‐stage curing approach is one of the promising strategies to achieve the 3D printing of high‐performance elastomers. Herein, a novel resin formulation that is composed of a photocurable acrylic resin and a mixture of thermocurable isocyanate oligomer/diamine is evaluated by digital light processing technology. Such resin possesses a satisfying viscosity for printing, especially at ambient temperature. For first curing stage, that is, photocurable stage, precisely architectural components with the required shape can be fabricated by a free‐radical photopolymerization. Methyl ethyl ketone oxime that serves as a blocking agent, was employed to ensure the stability of isocyanate resin during this stage. Consecutively, a thermally activated deblocking process is carried out and accompanied by isocyanate/diamine copolymerization, which is the second curing stage. An interpenetrating polymer networks structure in designing resin (25 wt% photocurable resin and 75 wt% thermocurable resin) was formed after thermal curing, which is of significance for achieving excellently comprehensive mechanical properties. Contributed by special structures, it is capable of reaching a 4.67 MPa of tensile strength at 100% strain, while yielding favorable tensile strength of 7.51 MPa as well a maximum elongation at break of 745.3%, which is nearly identical to the initial mechanical performances of pure polyurethane elastomer.

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Application of Two‐Dimensional Correlation Spectroscopy ( 2D ‐ COS ) in Polymer Studies

Park

Noda

Jung

2021

Spectroscopic Techniques for Polymer Characterization

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Separation of the molecular motion from different components or phases using projection moving-window 2D correlation FTIR spectroscopy for multiphase and multicomponent polymers

Abstract: This study developed a new analytical method called projection moving-window 2D correlation FTIR spectroscopy to separate the molecular motion of groups generated from different components or phases for multiphase and multicomponent polymers.

Cited by 13 publications

References 61 publications

Grafting of the carbon allotropes and polypyrrole via a Kevlar-type organic linker: the correlation of carbon structure/morphology with electrochemistry of the composite electrode

Grafting of the carbon allotropes and polypyrrole via a Kevlar-type organic linker: the correlation of carbon structure/morphology with electrochemistry of the composite electrode

Highly stretchable dual‐cure photosensitive resin for digital light processing printing

Application of Two‐Dimensional Correlation Spectroscopy ( 2D ‐ COS ) in Polymer Studies

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