Significant improved interfacial properties of PBO fibers composites by in-situ constructing rigid dendritic polymers on fiber surface

Liu, Zhide; Wang, Tingting; Wang, Li

doi:10.1016/j.apsusc.2020.145719

Cited by 42 publications

(19 citation statements)

References 68 publications

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“…Furthermore, the PBO-SN1-H0.1-reinforced composite possessed the highest ILSS of 29.2 ± 1.2 MPa, which was 40.4% higher than that of the pristine one (20.8 ± 1.6 MPa). As far as we know, the increase in ILSS achieved by our work is comparable to that of the latest reports (39−42%) 15,18,59 and superior to that of earlier reports (20−31%). 19,42,60−62 The wettability and R a of PBO fibers and the debonded morphology of corresponding composites were studied to explore the specific reasons for the improvement in the interfacial performance.…”

Section: Interfacial Properties Of Pbo/epoxy Compositessupporting

confidence: 80%

Nondestructive Strategy to Effectively Enhance the Interfacial Adhesion of PBO/Epoxy Composites

et al. 2020

ACS Appl. Mater. Interfaces

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Low interfacial adhesion seriously limits the wide application of PBO fiber in composites. To solve this problem, a novel hierarchical reinforcement strategy was developed by introducing epoxy sizing, nanoreinforcement of amino-functionalized silicon dioxide (SiO 2 −NH 2 ), and an interfacial compatibilizer of 2,6-bis(2-hydroxy-4aminophenyl) benzobisoxazole (HABO) onto poly(p-phenylene benzobisoxazole) (PBO) fibers via a facile dip-coating approach. SiO 2 −NH 2 and HABO were uniformly dispersed in epoxy sizing, forming an active interface layer. On this basis, wettability, surface roughness of the PBO fiber, and compatibility with the resin matrix were significantly improved, which gave 88.4 and 40.4% enhancement in the interfacial shear strength and interlaminar shear strength of the corresponding composites, respectively. Moreover, it should be noted that the outstanding mechanical and thermal properties of the PBO fiber were not impaired during the sizing treatment. In summary, our work provides an effective and damage-free approach to improve the interfacial adhesion of PBO/epoxy composites.

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Section: Interfacial Properties Of Pbo/epoxy Compositessupporting

confidence: 80%

Nondestructive Strategy to Effectively Enhance the Interfacial Adhesion of PBO/Epoxy Composites

et al. 2020

ACS Appl. Mater. Interfaces

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“…The molecular structure of PBO polymer only has a nitrogencontaining bonding, namely N═, so the N1s XPS spectrum of PBO-O has merely a characteristic peak. [49] The fitting curves of PBO-PDA appear peaks of NH and NH 2 bonding, which originating from the PDA polymer and DA monomer. [53] As shown in Table 2, the number of NH and NH 2 bonding on PBO-P5 increases continuously, confirming (PDA/PEI) coating was layer-by-layer constructed on the fiber surface.…”

Section: Microstructure and Surface Chemical Compositionmentioning

confidence: 98%

“…[48] The characteristic peaks of 1620, 1500, and 1051 cm À1 correspond to the stretching vibration of C═C/C═N, aromatic C C, and C O C bonding, respectively. [49] Due to the formation deposition of PDA polymers on the PBO-PDA surface, the characteristic peaks of methyl and methylene groups appear at 2920 and 2852 cm À1 , respectively. [50] Meantime, the bending vibration of N H bonding produces the absorption peak of 1550 cm À1.…”

Section: Microstructure and Surface Chemical Compositionmentioning

confidence: 99%

Enhancing interfacial adhesion and mechanical performance ofPBOfibers composites through mussel‐inspired molecular regulation of interphase structure

Liu

Chen

et al. 2021

Polymer Composites

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Poor interfacial properties are always one of the bottleneck problems limiting the development of the PBO fiber/epoxy composites. To solve this, we demonstrated a mussel-inspired molecular regulation strategy of interphase structure using the layer-by-layer construction of rigid (PDA) and flexible (PEI) molecules without fiber structure damage. The precise control on the molecular scale can maximally increase the roughness and polar functional group on the fiber surface, thus enhance the chemical bonding and the mechanical interlocking of the interfacial adhesion. In comparison with the untreated fiber, the IFSS and ILSS value of fiber with (PDA/PEI)n have an increment of 86.85% and 80.08%, respectively. Besides, the overall mechanical performance, such as impact strength and dynamic thermal-mechanical behavior, was also improved significantly, owing to the improved physical-mechanical attributes of the interphase. In brief, our study presents a non-destructive interface regulation of PBO fiber composite to enhance its interfacial adhesion and mechanical performance and optimize its structure/function integrated design.

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“…It makes the interfacial bonding strength of the final composite very low ( Cheng et al., 2018a , 2018b ; Nasser et al., 2019 ). In particular, these raw fibers could be easily peeled off or pulled out from polymer matrix under load, which seriously affects the load transfer from matrix to fiber and thereby impairs mechanical properties of the composites ( Mittal et al., 2018 ; Liu et al., 2020 ; Li et al., 2016 ). Therefore, relatively poor interfacial property is still an open challenge to achieve satisfactory CFRCs with high mechanical properties ( Wu et al., 2018 , 2021 ; Zhang et al., 2020a ; Beggs et al., 2015 ; Jia et al., 2019 ; Chen et al., 2016 ; Ma et al., 2019 ; Zhan et al., 2021 ; Garlof et al., 2016 , 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Interfacial reinforced carbon fiber composites inspired by biological interlocking structure

Wang¹,

Mu²,

Zhang³

et al. 2022

iScience

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Significant improved interfacial properties of PBO fibers composites by in-situ constructing rigid dendritic polymers on fiber surface

Cited by 42 publications

References 68 publications

Nondestructive Strategy to Effectively Enhance the Interfacial Adhesion of PBO/Epoxy Composites

Nondestructive Strategy to Effectively Enhance the Interfacial Adhesion of PBO/Epoxy Composites

Enhancing interfacial adhesion and mechanical performance ofPBOfibers composites through mussel‐inspired molecular regulation of interphase structure

Interfacial reinforced carbon fiber composites inspired by biological interlocking structure

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