The interfacial feature of thermoplastic polystyrene composite filled with nitric acid oxidized carbon fiber

Li, J.; Sun, Fang

doi:10.1002/sia.3019

Cited by 8 publications

(5 citation statements)

References 24 publications

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“…Table shows the results for PS-1, PA6-3, PA6-3/CB (100/20), and PA6-3/TiO 2 (100/20). τ app of the neat PS and PA6 is similar to the reported data, − suggesting the validity of the present test.…”

Section: Resultssupporting

confidence: 88%

Thermoplastics Reinforced with Self-Welded Short Carbon Fibers: Nanoparticle-Promoted Structural Evolution

Zhang

Liu

Lin

et al. 2016

ACS Appl. Mater. Interfaces

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The large volume of currently available fiber-reinforced polymer composites critically limits the intrinsic versatility of fibers such as high mechanical strength, heat resistance, and excellent thermal/electrical conductivity. We proposed a facile and widely applicable strategy to promote self-organization of randomly dispersed short carbon fibers (CFs) into a three-dimensionally continuous scaffold. The morphological evolution and structural reinforcement of the self-welded CF-polyamide 6 (PA6) scaffold in polystyrene (PS) matrix were investigated, with carbon black (CB) or titanium dioxide (TiO2) nanoparticles (NPs) selectively localized in the PA6 domains. Surprisingly, all of the PA6 droplets once dispersed in the PS matrix can migrate and evenly encapsulate onto the CF surface when 5.8 wt % CB is incorporated, whereas in the TiO2-filled system, the PA6 droplets preferentially segregate at the junction point of CFs to fasten the self-welded CF structure. In addition, a remarkable increase in the interfacial adhesive work between PA6 and CF was observed only when TiO2 is added, and a loading of even less than 0.8 wt % can effectively abruptly strengthen the self-welded CF scaffold. We clarified that the structural evolution is promoted by the nature of self-agglomeration of NPs. CB is highly capable of self-networking in the PA6 domain, resulting in high encapsulation of PA6, although the capillary force for preferential segregation of PA6 at the junction point of CFs is reduced. By contrast, the TiO2 particles tend to form compact aggregates. Such an agglomeration pattern, together with enhanced interfacial affinity, must contribute to a strong capillary force for the preferential segregation of PA6.

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Section: Resultssupporting

confidence: 88%

Thermoplastics Reinforced with Self-Welded Short Carbon Fibers: Nanoparticle-Promoted Structural Evolution

Zhang

Liu

Lin

et al. 2016

ACS Appl. Mater. Interfaces

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“…When considering the development of composites based on thermoplastic polymers, and more specifically PS, it is particularly difficult to ensure good interfacial adhesion between the matrix and the reinforcing agents. This shortage of compatibility between many reinforcing agents and PS is due to its inert nature and the lack of reactive groups (as compared with thermosetting systems and, indeed, other engineering thermoplastics), which limits the level of interaction . Hybrid materials with superior structural and functional properties can be obtained by incorporating nanofillers into polymer matrices.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of differently substituted phenyl hepta isobutyl‐polyhedral oligomeric silsesquioxane/polystyrene nanocomposites

et al. 2013

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Variously substituted polyhedral oligomeric silsesquioxanes (POSSs)/polystyrene (PS) nanocomposites of general formula R 7 R 0 (SiO 1.5 ) 8 /PS (where R 5 isobutyl and R 0 5 4-methoxyphenyl, 4-methylphenyl, 3,5-dimethylphenyl, 4-fluorophenyl, 2,4-difluorophenyl, 4-chlorophenyl) were prepared by in situ polymerization of styrene in the presence of 5% w/w of POSS. The actual filler concentration in the obtained nanocomposites was checked by 1 H NMR spectroscopy. Scanning electron microscopy and FTIR spectroscopy evidenced the presence of filler-polymer interactions. Inherent viscosity (g inh ) determinations indicated that the average molar mass of polymer in halogenated derivatives was lower than neat PS, and were in agreement with calorimetric glass transition temperature (T g ) measurements. Finally, a comparative study concerning the thermal stability of synthesized nanocomposites was carried out in both inert (flowing nitrogen) and oxidative (static air) atmospheres into a thermobalance, in the scanning mode, at 10 C min 21 , and the temperatures at 5% mass loss (T 5% ), of various compounds were determined. The results were discussed and interpreted. POLYM. COMPOS.,

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“…This result indicates that the treatment of the recycled carbon fibre with nitric acid increased the fibres' surface reactivity by introducing functional groups containing oxygen. Similarly, previous research reported that treating carbon fibre with HNO3 produced the appropriate surface groups required to increase the IFSS of composites with polystyrene, allowing for an effective transfer of the stress from the matrix to the fibre [38]. Hydroxyl (OH) groups can form a chemical bond with the maleic anhydride groups on MAPE, while the main PE constituent of MAPE entangles with the polymeric matrix, improving the interfacial bond between the fibre and the matrix [31,32,34].…”

Section: Tensile Testing Of Compositesmentioning

confidence: 92%

Hybrid Polyethylene Composites with Recycled Carbon Fibres and Hemp Fibres Produced by Rotational Moulding

2022

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This study assessed polyethene composites produced by rotational moulding with hybrid reinforcement using recycled carbon fibre (RCF) and hemp fibre (HF). First, the RCF was treated with nitric acid to introduce hydroxyl groups on the fibres’ surface and was characterised by infrared spectroscopy and microscopy analyses. Although the fibre surface treatment improved the tensile properties of the composites, the use of grafted maleic anhydride polyethylene (MAPE) as a coupling agent was more effective in improving the interfacial bonding between the fibres and the matrix. Alkali-treated hemp fibres were then used in combination with RCF to produce rotationally moulded composites with an overall fibre content of 10 wt.% but with different ratios of HF/RCF, namely, (20/80) and (50/50). The results showed that the addition of RCF increased the composite’s Young’s modulus compared to neat PE, regardless of the fibre treatment. Similarly, the hybrid composites showed superior Young’s moduli than the HF–PE composites through the increase in the RCF content. It was also observed that adding RCF reduced the void size within the final composites compared to the HF–PE composites, which contributed to the greater performance of the hybrid composites compared to their natural counterparts.

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The interfacial feature of thermoplastic polystyrene composite filled with nitric acid oxidized carbon fiber

Cited by 8 publications

References 24 publications

Thermoplastics Reinforced with Self-Welded Short Carbon Fibers: Nanoparticle-Promoted Structural Evolution

Thermoplastics Reinforced with Self-Welded Short Carbon Fibers: Nanoparticle-Promoted Structural Evolution

Synthesis and characterization of differently substituted phenyl hepta isobutyl‐polyhedral oligomeric silsesquioxane/polystyrene nanocomposites

Hybrid Polyethylene Composites with Recycled Carbon Fibres and Hemp Fibres Produced by Rotational Moulding

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