Simultaneous Dynamic Mechanical Analysis and Dielectric Analysis of Polymers (DMA-DEA)

Twombly, B.; Shepard, David D.

doi:10.1080/10739149408000454

Cited by 26 publications

(18 citation statements)

References 1 publication

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“…The most common are differential scanning calorimetry (DSC) 1 and dynamic mechanical analysis (DMA). 2 The disadvantage of these techniques is that it is difficult, if not impossible, to distinguish between the transitions of individual polymer phases in polymer blends or structured multiphase latices, such as core-shell polymers. 3 In DMA results, for example, T g is represented by the onset of a peak in the tan υ curve.…”

Section: Introductionmentioning

confidence: 99%

Measurement of thermal parameters and mechanical properties of polymers by atomic force microscopy

Meincken

Balk

Sanderson

2003

Surface & Interface Analysis

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A novel technique has been developed to determine thermal transitions locally, e.g. the glass transition of polymers, with atomic force microscopy (AFM). The microscope was operated in stationary non-contact mode, using it like a dynamic mechanical analyser on a molecular scale, thereby measuring the resonance frequency of the AFM cantilever, which oscillates above the sample surface, as a function of temperature. The thermal transitions of the underlying polymer are clearly visible as a change in the resonance frequency. Using the AFM in this mode allows the determination of the thermal properties of a material at a specific spot on the sample on a molecular scale. Measurements were performed on different polymers, polymer blends, structured polymers, layered systems and thin films.

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Section: Introductionmentioning

confidence: 99%

Measurement of thermal parameters and mechanical properties of polymers by atomic force microscopy

Meincken

Balk

Sanderson

2003

Surface & Interface Analysis

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“…Conventional tools used for thermal analyses of polymers are the differential scanning calorimeter [19] (DSC) and the dynamic mechanical analyser [20] (DMA).…”

Section: Introductionmentioning

confidence: 99%

Improved Sensitivity in the Thermal Investigation of Polymeric Nanophases by Measuring the Resonance Frequency Shift using an Atomic Force Microscope

Meincken

Balk

Sanderson³

2001

Macromol. Mater. Eng.

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“…The relative dielectric constant is a measure of the energy stored in a sample during a cyclic electric excitation while the relative dielectric loss is a measure of the energy lost into a system during cyclic electric excitation [32,33]. Figure 5 shows curves of dielectric constant and loss of EPDM/ SmBO 3 /polyolefin and EPDM/ATO/polyolefin composites in the range of frequency from 1 to 10 MHz.…”

Section: Dielectric Properties Of Rubber Vulcanizatesmentioning

confidence: 98%

Reinforcement of EPDM/SmBO3 and EPDM/ATO Composites by Four Polyolefins: Assessment of Branch Content and Crystallinity

Chen

Zhang

2010

Journal of Elastomers & Plastics

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From Van Gurp plot, it was found that low-density polyethylene possesses long branches. The larger number of short branches would consume more peroxide and lower the maximum toque (M H ) in cure curves. Rheological studies show the complex viscosity of polypropylene (PP) is the highest among four polyolefins. But PP would undergo beta-scission, which would consume peroxide and also lower the M H . Moreover, the acidic Sb-doped SnO 2 (ATO) would retard the cure and descend the chemical crosslink points, which would facilitate the motion of ethylene chain and enhance the crystallinity of polyolefin in ethylene-propylene-diene monomer composites.

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Simultaneous Dynamic Mechanical Analysis and Dielectric Analysis of Polymers (DMA-DEA)

Cited by 26 publications

References 1 publication

Measurement of thermal parameters and mechanical properties of polymers by atomic force microscopy

Measurement of thermal parameters and mechanical properties of polymers by atomic force microscopy

Improved Sensitivity in the Thermal Investigation of Polymeric Nanophases by Measuring the Resonance Frequency Shift using an Atomic Force Microscope

Reinforcement of EPDM/SmBO3 and EPDM/ATO Composites by Four Polyolefins: Assessment of Branch Content and Crystallinity

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