Optimum dispersion conditions and interfacial modification of carbon fiber and CNT–phenolic composites by atmospheric pressure plasma treatment

Park, Joung-Man; Wang, Zuo-Jia; Kwon, Dong-Jun; Gu, Ga-Young; Lee, Woo-Il; Park, Jong-Kyoo; DeVries, K. Lawrence

doi:10.1016/j.compositesb.2012.01.025

Cited by 42 publications

(17 citation statements)

References 15 publications

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“…The reason may be that, at this high fiber content, carbon fiber cannot be fully wetted by the matrix, which leads to the fiber aggregation and thus, deterioration of flexural properties . As for RCF, the strong fiber‐matrix interactions will alleviate this consequence , so the flexural strength of PVDF/RCF increases slightly.…”

Section: Resultsmentioning

confidence: 99%

Recycling carbon fiber from composite waste and its reinforcing effect on polyvinylidene fluoride composite: Mechanical, morphology, and interface properties

et al. 2015

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Recycled carbon fiber (RCF) was reclaimed from thermoset composite waste and employed as reinforcement from 0 to 30 wt% to prepare polyvinylidene fluoride (PVDF)/RCF composite. Commercial virgin carbon fiber (VCF) was used as comparison. The surface morphology, chemistry, and tensile properties of carbon fibers were investigated by Scanning Electron Microscopy (SEM), X‐Ray Photoelectron Spectroscopy (XPS), and tensile test. Results showed that the roughness, O/C ratio and –COO content of RCF surface were significantly improved after recycling. In addition, the single fiber tensile strength and modulus of RCF was lower than that of VCF. The interfacial adhesion between RCF and PVDF was much stronger due to the high chemical activity and roughness over the RCF surface. Mechanical properties of composites were investigated by flexural test, impact test, and Dynamic Mechanical Analysis (DMA). It is found that the PVDF/RCF composite showed higher flexural properties, storage modulus, and lower impact strength, which indicated the strong interfacial adhesion, played an important role in reinforcing. The morphology of fracture further demonstrated the strong interface in PVDF/RCF composite. The fiber length distribution and crystallinity of composites were also evaluated to characterize the composites. The work develops potential for recycling and reuse of carbon fiber, and also expands the application of PVDF based composite. POLYM. COMPOS., 38:2544–2552, 2017. © 2015 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Recycling carbon fiber from composite waste and its reinforcing effect on polyvinylidene fluoride composite: Mechanical, morphology, and interface properties

et al. 2015

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“…Any thermal history is expected to be induced in the powder due to all the milling process was carried out in a very short period of time and keeping the sample at a very low temperature. 23,24 Curing Process Dough time (mixing time) should be lower than 5 min according to ISO 5833. This result was shared by all milled materials prepared in this work.…”

Section: Morphologymentioning

confidence: 99%

Thermal and dynamic mechanical characterization of acrylic bone cements modified with biodegradable polymers

Franco-Marquès

Méndez

Gironès

et al. 2012

J of Applied Polymer Sci

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In this work, a thermal and a dynamic mechanical study of new formulations self-curing acrylic bone cements is reported. The basic formulation of poly(methylmethacrylate) (PMMA)-based acrylic bone cements has been modified with biodegradable polyesters such as poly(L-lactic acid), poly(b-hydroxybutyrate), and different kinds of thermoplastic starches. Differential scanning calorimetry (DSC) (dynamic and isothermal conditions), thermogravimetric analysis (TGA), dynamic mechanical thermal analysis (DMTA), and scanning electron microscopy (SEM) were used to determine the influence of the biodegradable polymer in the behavior of the biomedical formulations. DSC assay revealed a strong dependence of the polymerization enthalpy (DH cur ) with increasing solid : liquid ratio and a low influence of the nature of the added biodegradable polymer on glass transition. TGA analysis showed the different mechanism of PMMA-biodegradable polymer interaction depending on the solubilization of the added polymer in methylmethacrylate monomer during curing. DMTA showed the reinforcing capacity of segregated phases of the polymer included in the cement. The solubilization of aliphatic polyesters in the resulting PMMA polymerized phase led to a drop in mechanical stiffness observed from storage modulus (E 0 ) profiles. Moreover, tan d shifts to higher temperatures (4-7 C) during a second scan, confirming the presence of residual monomer content.

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“…In previous works, the research of CF dispersion was mainly focused on the aqueous phase system, and good dispersion effects were obtained. However, the fiber dispersion was primarily evaluated by using scanning electron microscope (SEM) or direct observation, which had some defects of many steps and unconspicuous results …”

Section: Introductionmentioning

confidence: 99%

Effects of surface synergy for the dispersion of short carbon fibers sized by adipic acid modified epoxy resin potassium

Zheng

Wang

et al. 2018

Surface & Interface Analysis

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The carbon fiber (CF) surface plays a critical role in the performance of CF composite materials. Adipic acid modified epoxy resin potassium (AAEK) prepared with epoxy resin and adipic acid, and KOH was employed as the CF sizing agent. Then, series of surface properties of AAEK‐treated carbon fiber (CF‐AAEK) including surface charge, morphology, and groups were characterized by using Faraday cup, friction coefficient gauge, atomic force microscopy, X‐ray photoelectron spectroscopy, and thermogravimetry. The results indicated that the dispersion coefficient of CF‐AAEK was increased by 1.72 times and there were synergistic effects for the dispersion of short CFs during the sizing treatment process with AAEK. In addition, the flexural strength of treated short CF composite proved to increase by 168%, which evaluated that the better CF dispersion in the matrix was a critical factor for the mechanical property improvement of short CF‐AAEK/epoxy resin composites.

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Optimum dispersion conditions and interfacial modification of carbon fiber and CNT–phenolic composites by atmospheric pressure plasma treatment

Cited by 42 publications

References 15 publications

Recycling carbon fiber from composite waste and its reinforcing effect on polyvinylidene fluoride composite: Mechanical, morphology, and interface properties

Recycling carbon fiber from composite waste and its reinforcing effect on polyvinylidene fluoride composite: Mechanical, morphology, and interface properties

Thermal and dynamic mechanical characterization of acrylic bone cements modified with biodegradable polymers

Effects of surface synergy for the dispersion of short carbon fibers sized by adipic acid modified epoxy resin potassium

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