Study on the Structure and Properties of Polyvinyl Pyrrolidone/ Polyamide 6 Blends

Zhang, Shi Jie; Yi, Tao; Yang, Xin; Cheng, Li

doi:10.4028/www.scientific.net/amr.554-556.13

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Features of interfacial phenomena in polymer blends are determined primarily by the nature of the initial ingredients. 18,19 However, most polymer pairs do not have thermodynamic compatibility. In such blends, the formation of a common crystal lattice is impossible, but we can assume the presence of compatibility between the components based on the formation of common supramolecular structures in the absence of a clear boundary of the transition layers.…”

Section: Resultsmentioning

confidence: 99%

“…Thermal annealing has a different effect: for polystyrene-based samples an accelerated relaxation and reduction of internal stresses are observed; for polyamide recrystallization and an increase in the crystallinity degree are obvious. 18 Along with the physicomechanical properties of thermoplastic -PVP blends, we studied the effect of PVP content on their thermophysical parameters, in particular the Vicat softening point (Fig. 10).…”

Section: Resultsmentioning

confidence: 99%

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Formation of Elastomeric Composition Properties in the Presence of Bioingredient

Sokolova¹,

Daliba²,

Sukha³

et al. 2023

ChChT

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Peculiarities of formation of technological, vulcanization, dynamic, relaxation, and physicomechanical properties of elastomeric composition used for the tread production have been studied in the presence of bioingredient as a plasticizer-softener. Bioingredient is an organic component of sunflower oil winterization by-product (OSSO product). It was found that the OSSO product increases the cohesive strength of the rubber compound by 1.5 times in comparison with the industrial petrochemical lubricants. Under the same vulcanization conditions, the bioingredient provides 30–40 % higher resistance to reversion and relaxation processes at 373 K, lower dynamic losses, as well a high level of physical and mechanical characteristics.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Formation of Elastomeric Composition Properties in the Presence of Bioingredient

Sokolova¹,

Daliba²,

Sukha³

et al. 2023

ChChT

View full text Add to dashboard Cite

show abstract

“…For stretching vibration, the formation of hydrogen bonds generally increases the bond length and decreases the bond energy, leading to a stronger absorption intensity and lower wavenumber. [49][50][51] Hence, the downshifted wavenumber revealed that intermolecular hydrogen bonds were formed between the C = O bond in PVP and C─OH bond in SWCNTs. Actually, there are lone pair electrons in oxygen and nitrogen atoms of the amide bonds in PVP molecular, both of which can form hydrogen bonds.…”

Section: Illustration Of Mechanismmentioning

confidence: 97%

High‐Power‐Density and Excellent‐Flexibility Thermoelectric Generator Based on All‐SWCNTs/PVP Composites

Zhang,

Shang,

Zou

et al. 2024

Small

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Flexible polymer/single‐wall carbon nanotube (SWCNT) composites are a vital component for wearable/portable electronics, but the development of their n‐type counterpart is laggard. Furthermore, little attention is paid to the interaction between SWCNT and polymers, especially the unconjugated polymers, as well as the conversion mechanism of conduction characteristics. Here, the n‐type flexible SWCNTs/Polyvinyl Pyrrolidone (PVP) films are successfully fabricated, where the oxygen atoms in PVP interacted with SWCNT via hydrogen bonds, which can lower the energy barrier of electron tunneling, providing the pathway for the electron transfer. Furthermore, with the increasing synthesis temperature, the hydrogen bonds strengthened and the thermal activation energy further improved, both of which enhanced the electron‐donating ability of PVP, resulting in a high‐power‐factor value of 260 µW m−1 K−2. Based on the optimized SWCNTs/PVP films, a thermoelectric module is assembled, which achieved a power density of 400 µW cm−2 at a temperature difference of 56 K, coupled with excellent flexibility, showing a less than 1% variation of resistance after 5000 bending cycles. It shows the highest output‐performance and the best flexibility among the reported SWCNT‐based thermoelectric modules. This work provides significant insights into the interaction mechanism and performance optimization of hybrid thermoelectric composites, based on SWCNTs/unconjugated polymers.

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Regularities of Modifying, Morphology and Properties of Thermoplastics Containing Polyvinylpyrrolidone

Levytskyi¹,

Masyuk²,

Bratychak³

et al. 2023

ChChT

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Study on the Structure and Properties of Polyvinyl Pyrrolidone/ Polyamide 6 Blends

Cited by 3 publications

References 6 publications

Formation of Elastomeric Composition Properties in the Presence of Bioingredient

Formation of Elastomeric Composition Properties in the Presence of Bioingredient

High‐Power‐Density and Excellent‐Flexibility Thermoelectric Generator Based on All‐SWCNTs/PVP Composites

Regularities of Modifying, Morphology and Properties of Thermoplastics Containing Polyvinylpyrrolidone

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