Natural hemp fiber reinforced polybenzoxazine composites: Curing behavior, mechanical and thermal properties

Dayo, Abdul Qadeer; Gao, Baofeng; Wang, Jun; Liu, Wenbin; Derradji, Mehdi; Shah, Ahmer Hussain; Babar, Aijaz Ahmed

doi:10.1016/j.compscitech.2017.03.024

Cited by 137 publications

(94 citation statements)

References 65 publications

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“…Dayo et al . concluded that T g was dependent upon the frictional resistance of molecular chains . Specifically, when increasing the filler content, the increase in the fiber surface will impede the mobility of amorphous molecular chains, leading to a higher T g .…”

Section: Resultsmentioning

confidence: 99%

Effect of fiber volume fraction on the thermal and mechanical behavior of polylactide‐based composites incorporating bamboo fibers

Wang

Yang

Zhou

et al. 2017

J of Applied Polymer Sci

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Biodegradable composites reinforced with natural fibers are emerging as advanced materials in structural applications. In this work, green biocomposites are fabricated using hot pressing molding technique, polylactic acid selected as a matrix. The samples are prepared with different fiber volume fractions (30%, 40%, and 50%). Tensile tests are conducted on the specimens to investigate the composite mechanical behavior, and the influences of fiber content on the morphological and thermomechanical properties are evaluated using scanning electron microscopy, differential scanning calorimetry, and thermogravimetric analysis. There are higher tensile modulus and lower elongation at break for composites with increasing fiber content, respectively. Much variation in the tensile strength is observed when the fiber content is varied, which could be attributed to fiber agglomerations that affect the dispersion of fibers in the matrix, as evidenced by fracture surfaces. Thermal tests demonstrate that the increment of fiber content enhances the glass transition temperature and crystallization temperature of composites. Besides, a comparative analysis of the composites is performed, and the properties of the treated fiber composites are found to be improved compared to those from untreated fibers. Detailed analysis confirms the possibility of the addition of bamboo fibers to a biodegradable matrix for a specific application. V C 2017Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46148.

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Section: Resultsmentioning

confidence: 99%

Effect of fiber volume fraction on the thermal and mechanical behavior of polylactide‐based composites incorporating bamboo fibers

Wang

Yang

Zhou

et al. 2017

J of Applied Polymer Sci

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“…Although benzoxazine resin has various advantages as described above, it needs to be modified to broaden its range of applications. There are two main strategies for modification of benzoxazines: (1) selection of different phenolics and amines to alter the performance of benzoxazine resin and (2) preparation of composite materials by blending or copolymerizing with other materials …”

Section: Introductionmentioning

confidence: 99%

Bio‐based benzoxazines based on sesamol: Synthesis and properties

Liu

Zhan

et al. 2019

J of Applied Polymer Sci

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Sesamol was used with furfurylamine, dehydroabietylamine, and stearylamine to prepare three fully‐bio‐based benzoxazines: S‐fa, S‐da, and S‐sa, respectively. Their structures were confirmed by Fourier transform infrared spectroscopy (FTIR), 1H‐NMR, and 13C‐NMR. FTIR and differential scanning calorimetry were performed to monitor the curing behaviors of S‐fa, S‐da, and S‐sa. The thermal stability of the corresponding polybenzoxazines was supported by thermogravimetric analysis, and all polymers showed high thermal stability. The limiting oxygen indexes of all three polybenzoxazines were higher than 30, suggestive of good flame retardancy. The use of polybenzoxazine for the corrosion protection of Q235 low‐carbon steel was also studied. The results of OCP curves and Tafel plots demonstrate that the polymer coatings provide good corrosion resistance and can be applied to this purpose. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48255.

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“…Understanding of these interactions is key to the development of new materials with enhanced properties. BNZs can result in crosslinked polymers that can act as matrixes in other formulations, such as composite materials, which perhaps is the main use of polybenzoxazines …”

Section: Introductionmentioning

confidence: 99%

Application of Benzoxazine‐Based Dimers, Oligomers, and Polymers as Chelating Agents

Iguchi

Salum

Froimowicz

2018

Macro Chemistry & Physics

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Polybenzoxazines are a relatively new type of thermoset polymer that has primarily been used for the development of composite materials. However, there is an existing interest in expanding the applications for this family of polymers. One way of achieving this goal is by taking advantage of the molecular structure, where the presence of oxygen and nitrogen atoms with lone electron pairs allows the formation of coordination complexes and chelates between the benzoxazine oligomers and polymers with metal ions. This article is focused on studying the relationship between the spatial conformation of the polybenzoxazine and the capacity to form coordination complexes from a fundamental point of view as well as practical applications of this concept. Thus, it can be seen that use of polybenzoxazines for the removal of heavy metals from water and the use of benzoxazine dimers for the synthesis of CeO2 nanoparticles are examples of very different applications based on the same working principle.

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Natural hemp fiber reinforced polybenzoxazine composites: Curing behavior, mechanical and thermal properties

Cited by 137 publications

References 65 publications

Effect of fiber volume fraction on the thermal and mechanical behavior of polylactide‐based composites incorporating bamboo fibers

Effect of fiber volume fraction on the thermal and mechanical behavior of polylactide‐based composites incorporating bamboo fibers

Bio‐based benzoxazines based on sesamol: Synthesis and properties

Application of Benzoxazine‐Based Dimers, Oligomers, and Polymers as Chelating Agents

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