Synergistic effects of filler-migration and moisture on the surface structure of polyamide 6 composites under an electric field

RSC Advances ◽  
2016 ◽  
Vol 6 (98) ◽  
pp. 95535-95541 ◽  
Author(s):  
Qi Zhou ◽  
Jingjing Zhang ◽  
Yuanyu Wang ◽  
Weidong Wang ◽  
Shunying Yao ◽  
...  
Keyword(s):  
Electric Field ◽  
Surface Structure ◽  
Phase Inversion ◽  
Synergistic Effects ◽  
Polyamide 6

Polyamide 6 (PA6) and PA6 composites with 2 wt% of nanofillers (aminopropyl isobutyl POSS (AB-POSS) or polymer grade montmorillonite (PGN)) were synthesized by electric assisted phase inversion at different moistures.

Synergistic effects of nonmetal co-doping with sulfur in anatase TiO2: a DFT + U study

2015 ◽  
Vol 17 (5) ◽  
pp. 3426-3434 ◽  
Author(s):  
Qing-Lu Liu ◽  
Zong-Yan Zhao ◽  
Qing-Ju Liu
Keyword(s):  
Electric Field ◽  
Synergistic Effects ◽  
Anatase Tio2 ◽  
Local Electric Field ◽  
Energy Bands ◽  
Deep Impurity ◽  
Co Doping

S + NM co-doping could induce a stronger local electric field and eliminate the deep impurity energy bands of S mono-doped TiO2.

scholarly journals Layer-by-Layer Deposition of Copper and Phosphorus Compounds to Develop Flame-Retardant Polyamide 6/Montmorillonite Hybrid Composites

2020 ◽  
Vol 10 (14) ◽  
pp. 5007 ◽  
Author(s):  
Tomasz M. Majka ◽  
Monika Witek ◽  
Paulina Radzik ◽  
Karolina Komisarz ◽  
Agnieszka Mitoraj ◽  
...  
Keyword(s):  
Hybrid Composites ◽  
Protective Coatings ◽  
Synergistic Effects ◽  
Polyamide 6 ◽  
Hybrid Nanocomposites ◽  
Phosphorus Compounds ◽  
Double Layers ◽  
Layer By Layer ◽  
Maximum Point ◽  
Layer Deposition

Nowadays, increasing attention is devoted to the search for polymeric composite materials that are characterized by reduced flammability. In this work, the layer-by-layer (LbL) technique was applied to form multilayered protective coatings for polyamide 6/montmorillonite (PA6/MMT) hybrid nanocomposites. This time, the double layers LbL deposition was used in order to improve the thermal properties or flammability of PA6 materials. Our goal was to check how five, 10, and 15 triple-layer deposition onto the surface of PA6 and PA6/MMT composites influenced these relevant properties. For this reason, disodium H-phosphonate, sodium montmorillonite, and iodo-bis(triphenylphosphino)copper were used for polyelectrolyte solution preparation. It was found that the LbL method could be successfully used to improve the flammability characteristics of polyamide 6-based composites. Nevertheless, the deposition of the copper complex should be combined with other flame retardants—preferentially containing phosphorus—which enable synergistic effects to occur. Moreover, microscopic observations confirmed that the surfaces on which the formation of interwoven fibrous crystal structures was observed had a tendency to protect the entire material against the destructive effects of heat, contributing, among other things, to reduce the maximum point of heat release rate (PHRR).

Inactivation of Microorganisms in Cloudy Ginkgo (Ginkgo biloba Linn.) Juice by Pulsed Electric Fields

2007 ◽  
Vol 13 (2) ◽  
pp. 83-90 ◽  
Author(s):  
H. Zhang ◽  
Z. Wang ◽  
R.-J. Yang ◽  
S.-Y. Xu
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Electric Fields ◽  
Treatment Time ◽  
Synergistic Effects ◽  
Pulsed Electric Fields ◽  
Bath Temperature ◽  
Microbial Inactivation ◽  
Plate Counts

Pulsed electric fields (PEF) were applied to neutral ginkgo cloudy juice to study the influence of the electric field strength, the treatment time and temperature on microbial inactivation. The results showed that microbial inactivation increased with the electric field strength, the treatment time and temperature. PEF treatment caused 3.39 and 4.44-log cycles reduction of coliforms and total plate counts, respectively, when pulse duration was 3 μs, the electric field strength 30 kV/cm, the treatment time 520 μs and the water bath temperature 15°C. Under the same conditions, the microbial shelf life of ginkgo cloudy juice was extended to 24 days at 4°C and 18 days at room temperature. A 3.7-log cycles reduction of the total yeast and mould counts was obtained by applying 390 μs of 30 kV/cm at 15°C.Yeast and mould cells were less resistant to PEF process than bacteria cells. The effect of heat generated during the PEF treatment was limited on microbial inactivation. Temperature and the induced heat by PEF had synergistic effects to microbial inactivation in cloudy ginkgo juice.

Sign in / Sign up

Export Citation Format

Share Document