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Xie, Aifang; Zhang, Zebo; Gu, Bing; Yang, Ge; Tao, Dongliang; Weng, Shifu; Wu, Jinguang; Xu, Guangyang; Hu, Xiangming; Liu, Xuexin; Zhao, Ying; Xu, Yizhuang; Xu, Duanfu

doi:10.1023/a:1017969130685

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…Amide groups have certain ability of coordination complexation with metal ions via the lone pair electrons of nitrogen atom from amide groups entering into empty orbital of metal ion, and the hydrogen bond of AF is destoryed, which leads to a decrease of the degree of crystallinity of AF. Figure illustrates the XRD patterns of AF with different treatment condition.…”

Section: Resultsmentioning

confidence: 99%

“…Many studies have showed that amide groups had certain ability of coordination complexation with metal ions, such as Ca +2 , Li +1 , etc., which greatly reduces the hydrogen bonding interaction and the crystallinity of polymer. Based on this, the technology that treated AF with CaCl 2 solution was applied to surface treatment of AF in this article in order to change its surface features.…”

Section: Introductionmentioning

confidence: 99%

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Influence of complexing treatment and epoxy resin coating on the properties of aramid fiber reinforced natural rubber

Jin

Luo

Yang

et al. 2015

J of Applied Polymer Sci

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In this work, natural rubber/aramid fiber (NR/AF) composites were prepared with master batch method. AF was modified by using epoxy resin (EP) and accelerator 2-ethyl-4-methylimidazole (2E4MZ) through surface coating on the basis of the complexing treatment with CaCl 2 solution. Hydroxyl-terminated liquid isoprene rubber (LIR) was regarded as a compatibilizer between EP and NR. It is found that the crystallinity on AF surface is decreased by complexing reaction with CaCl 2 solution. Swelling and mechanical properties of the vulcanized composites, such as swelling degree, tensile and tear strength, tensile modulus at 300% elongation, are measured, and the tensile fracture morphology and dynamic mechanical analysis of the composites are investigated. The results show that the mechanical properties of composites with modified fibers are improved obviously and interfacial adhesion between matrix and the fiber is enhanced, especially for the AF coated with EP and imidazole. The best comprehensive mechanical properties of the composites are obtained with using CaCl 2 -EP/2E4MZ system when the ratio of m(EP)/m(AF) is 3%. V C 2015 Wiley Periodicals, Inc. J.Appl. Polym. Sci. 2015, 132, 42122.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of complexing treatment and epoxy resin coating on the properties of aramid fiber reinforced natural rubber

Jin

Luo

Yang

et al. 2015

J of Applied Polymer Sci

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“…Polyamide molecular structure contains a large number of amide groups, which can complex with metal ions. The complexation has a significant impact on the properties of polyamide [5][6][7]. Sun et al [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Shear Intensity on Structure and Properties of PA1010/CaCl<sub>2</sub> Composites

Gan

et al. 2012

AMR

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The research focused on the effect of shear intensity on the crystallization process and the properties of the PA1010/CaCl2 composites which were prepared through melting extrusion. The results showed that, the interplanar distance, the crystallinity and the wavenumbers all had an extreme value when the screw speed was 240r/min. With the increasing of the shear intensity, the complexation between PA1010 and CaCl2 increased first and then decreased. The tensile strength and the heat distortion temperature of the samples increased first and then decreased, and the melt index decreased first and then increased, when the screw speed changed from 160r/min to 320r/min. All of them had an extreme value when the screw speed was 240r/min. The tensile yield strength, the flexural strength decreased with increasing of screw speed, and increased slightly or tended to a fixed value when the screw speed was more than 280r/min. The Izod impact strength rapidly decreased from 62MPa to 40.3MPa when the screw speed changed from 160r/min to 240r/min, then increased slowly with increasing of the shear intensity. The appropriate screw speed of the large-scale continuous production for the PA1010/CaCl2 composites was from 200r/min to 240r/min.

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“…It has the ability to bind reversibly a variety of organic and inorganic compounds 7. Complex formation as well as the interactions between PVP and metal ions have been extensively studied 8–20. In all these cases, the investigations of the interactions between PVP and metal ions focus on dilute solution or the solid state, whereas studies of the interactions in semi‐dilute or concentrated solution have seldom been reported.…”

Section: Introductionmentioning

confidence: 99%

Anomalous rheological behavior of poly(1‐vinyl‐2‐pyrrolidone) and CuCl₂ in solution and their interactions in solid composites

Hao

Zhao

Dong

et al. 2009

Polymer International

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BACKGROUND: The aggregation structure of polymers in solution is an important aspect of their behavior. The interactions between metal ions and water‐soluble polymers have a significant influence on the conformation behavior of biological macromolecules, and on the ionic selectivity of cells, etc. RESULTS: The rheological behavior of poly(1‐vinyl‐2‐pyrrolidone) (PVP) and CuCl2 dispersed in N,N‐dimethylformamide was investigated using rheological techniques. Concentrated solutions containing CuCl2 exhibited a rheological behavior different from those containing other metal chlorides (LiCl, CaCl2 and CoCl2). This indicated that the variation in the aggregation state of the PVP chains with concentration of CuCl2 was different from those of PVP solutions containing Li+, Ca2+ or Co2+ ions. CONCLUSION: The interactions between PVP and CuCl2 inhibit the crystallization of CuCl2 and induce the formation of microphase separation in the system. Copyright © 2009 Society of Chemical Industry

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Cited by 9 publications

References 6 publications

Influence of complexing treatment and epoxy resin coating on the properties of aramid fiber reinforced natural rubber

Influence of complexing treatment and epoxy resin coating on the properties of aramid fiber reinforced natural rubber

Effect of Shear Intensity on Structure and Properties of PA1010/CaCl<sub>2</sub> Composites

Anomalous rheological behavior of poly(1‐vinyl‐2‐pyrrolidone) and CuCl₂ in solution and their interactions in solid composites

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Cited by 9 publications

References 6 publications

Influence of complexing treatment and epoxy resin coating on the properties of aramid fiber reinforced natural rubber

Influence of complexing treatment and epoxy resin coating on the properties of aramid fiber reinforced natural rubber

Effect of Shear Intensity on Structure and Properties of PA1010/CaCl<sub>2</sub> Composites

Anomalous rheological behavior of poly(1‐vinyl‐2‐pyrrolidone) and CuCl2 in solution and their interactions in solid composites

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Product

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Anomalous rheological behavior of poly(1‐vinyl‐2‐pyrrolidone) and CuCl₂ in solution and their interactions in solid composites