Building unique surface structure on aramid fibers through a green layer-by-layer self-assembly technique to develop new high performance fibers with greatly improved surface activity, thermal resistance, mechanical properties and UV resistance

Zhou, Lifang; Yuan, Li; Guan, Qingbao; Liang, Guozheng

doi:10.1016/j.apsusc.2017.03.024

Cited by 59 publications

(31 citation statements)

References 61 publications

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“…Layer-by-layer self-assembly coating provides a promising candidate for the surface modification of fibers, which can maintain the main structure and repair defects on the fiber surface [22]. Therefore, layer-by-layer self-assembly coating attracts increasing attention among researchers due to its feasibility, easy accessibility, good repeatability and preparation of multilayer films by alternately depositing charged substrates in oppositely charged polyelectrolyte solutions [23,24,25].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, layer-by-layer self-assembly coating attracts increasing attention among researchers due to its feasibility, easy accessibility, good repeatability and preparation of multilayer films by alternately depositing charged substrates in oppositely charged polyelectrolyte solutions [23,24,25]. This method now has been used to modify cotton fibers [26,27,28,29], PBO fibers [30] and aramid fibers [22].…”

Section: Introductionmentioning

confidence: 99%

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Layer-by-Layer Self-Assembly Strategy for Surface Modification of Aramid Fibers to Enhance Interfacial Adhesion to Epoxy Resin

Liu

Kong

et al. 2018

Polymers

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In this work, the layer-by-layer self-assembly technology was used to modify aramid fibers (AFs) to improve the interfacial adhesion to epoxy matrix. By virtue of the facile layer-by-layer self-assembly technique, poly(l-3,4-Dihydroxyphenylalanine) (l-PDOPA) was successfully coated on the surface of AFs, leading to the formation of AFs with controllable layers (nL-AF). Then, a hydroxyl functionalized silane coupling agent (KH550) was grafted on the surface of l-PDOPA coated AFs. The properties such as microstructure and surface morphology of AFs before and after modification were characterized by FTIR, XPS and FE-SEM. The results confirmed that l-PDOPA and KH550 were successfully introduced into the surface of AFs by electrostatic adsorption. The interfacial properties of AFs reinforced epoxy resin composites before and after coating were characterized by interfacial shear strength (IFSS), interlaminar shear strength (ILSS) and FE-SEM, and the results show that the interfacial adhesion properties of the modified fiber/epoxy resin composites were greatly improved.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Layer-by-Layer Self-Assembly Strategy for Surface Modification of Aramid Fibers to Enhance Interfacial Adhesion to Epoxy Resin

Liu

Kong

et al. 2018

Polymers

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“…However, AF commonly possesses a smooth and chemically inert surface, lacking functional groups, which leads to chemical and/or mechanical interlocking resistance to the polymer matrix [ 16 ]. Hence, it is difficult to acquire superior interfacial adhesion between virgin AF and the polymer matrix, heavily affecting the performance of its composites [ 17 , 18 ]. As described in many publications, numerous methods have been carried out to improve the interfacial interaction of AF with the polymer matrix, including plasma treatments [ 19 ], γ–ray irradiation [ 20 ], chemical etching [ 21 ], surface grafting [ 22 ] and direct fluorination [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Rivet-Inspired Modification of Aramid Fiber by Decorating with Silica Particles to Enhance the Interfacial Interaction and Mechanical Properties of Rubber Composites

Xiong

Zhang

2020

Materials

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A rivet–inspired method of decorating aramid fiber (AF) with silica particles (SiO2) is proposed to produce SiO2@AF hybrid materials that have largely enhanced interfacial interaction with the rubber matrix. AF was firstly surface-modified with polyacrylic acid (PAA) to obtain PAA–AF, and SiO2 was silanized with 3-aminopropyltriethoxysilane to obtain APES–SiO2. Then, SiO2@AF was prepared by chemically bonding APES–SiO2 onto the surface of PAA–AF in the presence of dicyclohexylcarbodiimide (DCC) and 4-dimethylaminopyridine (DMAP). With the incorporation of SiO2@AF into the rubber matrix, SiO2@AF hybrid materials with high surface roughness can play a role as ‘rivets’ to immobilize large numbers of rubber chains on the surface. The tear strength and tensile strength of rubber composite that filling 4 phr SiO2@AF are dramatically increased by 97.8% and 89.3% compared to pure rubber, respectively. Furthermore, SiO2@AF has superiority in enhancing the cutting resistance of rubber composites, in contrast with unmodified AF and SiO2. SiO2@AF is suitable to be applied as a novel reinforcing filler in rubber composites for high performance.

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“…The resin and fibers are bonded to each other via a two-phase interface, which acts as a bridge between the reinforcement and the matrix, playing a role in stress transmission [11,12]. Different methods of modifying the surfaces of fibers have been investigated as strategies to increase the interfacial strength between fiber [13], such as chemical etching [14,15] and grafting [16,17], plasma [18,19], addition of graphene [20], and so on. However, these methodologies often lead to a loss of tensile strength of the fibers and generate environmental pollution [21].…”

Section: Introductionmentioning

confidence: 99%

Coating Strategy for Surface Modification of Stainless Steel Wire to Improve Interfacial Adhesion of Medical Interventional Catheters

Kong

et al. 2020

Polymers

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Poor interfacial bonding between stainless steel wire and the inner and outer layer resin matrix significantly affects the mechanical performance of braid-reinforced composite hollow fiber tube, especially torsion control. In this work, a coating of thermoplastic polyurethane (TPU) deposited on the surface of stainless steel wire greatly enhanced the mechanical performance of braid-reinforced composite hollow fiber tube. This method takes advantage of the hydrogen bonding between polyether block amide (PEBA) and thermoplastic polyurethane (TPU) for surface modification of stainless steel wire, as well as the good compatibility between PEBA and TPU. The mechanical properties of composited tubes demonstrate that the interlaminar shear strength, modulus of elasticity, and torque transmission properties were enhanced by 27.8%, 42.1%, and 41.4%, respectively. The results indicating that the interfacial adhesion between the coated stainless steel wire and the inner and outer matrix was improved. In addition, the interfacial properties of composite hollow fiber tube before and after coating was characterized by the optical microscope, and results show that the interfacial adhesion properties of the modified stainless steel wire reinforced resin matrix composites were greatly improved.Polymers 2020, 12, 381 2 of 12 Among these fiber-reinforced materials, the excellent ductility of stainless steel wire enables it to absorb more impact energy during the fiber crushing process and have higher deformability. At the same time, due to its excellent fatigue resistance and low creep, steel wire braided-reinforced tubes have better operating performance. Compared to carbon fiber and other reinforcing materials, stainless steel wire has slightly lower breaking strength and lower cost [7][8][9][10]. Based on these advantages, stainless steel wire has been widely applied in fiber-reinforced composites. Braided-reinforced composite tube essentially acts as a composite material, composed of inner and outer layers of a base material, and an intermediate braided layer, as shown in Figure 1a. However, the joints of stainless steel wire make it easy for slippage to occur between the wire and the inner and outer resin (Figure 1b), which leads to a reduction of the torque transmission performance. The shear modulus is the main factor that determines the torsional strength of hollow fiber tubes. The higher the shear modulus, the better the torsional strength. Currently, the torsional strength of composite hollow fiber tubes is mainly adjusted by the design of the braided structure, such as increasing the strength, number of strands, number of layers of braided stainless steel wire, and so on. However, as in other composite materials, the interfacial interaction is the key factor influencing the mechanical performance of the materials. The resin and fibers are bonded to each other via a two-phase interface, which acts as a bridge between the reinforcement and the matrix, playing a role in stress transmission [11,12].

show abstract

Building unique surface structure on aramid fibers through a green layer-by-layer self-assembly technique to develop new high performance fibers with greatly improved surface activity, thermal resistance, mechanical properties and UV resistance

Cited by 59 publications

References 61 publications

Layer-by-Layer Self-Assembly Strategy for Surface Modification of Aramid Fibers to Enhance Interfacial Adhesion to Epoxy Resin

Layer-by-Layer Self-Assembly Strategy for Surface Modification of Aramid Fibers to Enhance Interfacial Adhesion to Epoxy Resin

Rivet-Inspired Modification of Aramid Fiber by Decorating with Silica Particles to Enhance the Interfacial Interaction and Mechanical Properties of Rubber Composites

Coating Strategy for Surface Modification of Stainless Steel Wire to Improve Interfacial Adhesion of Medical Interventional Catheters

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