Surface Silverized Meta-Aramid Fibers Prepared by Bio-inspired Poly(dopamine) Functionalization

Abstract

A facile method was developed to fabricate highly electrically conductive aramid fibers. The immobilization of silver nanoparticles on the surface of polymetaphenylene isophthamide (PMIA) fibers was carried out by the functionalization of the PMIA fibers with poly(dopamine), followed by electroless silver plating. The poly(dopamine) (PDA) layer was deposited on the PMIA surface by simply dipping the PMIA substrate into an alkaline dopamine solution. The silver ions can be chemically bound to the catechol and indole functional groups in PDA. The silver ions were reduced into silver nanoparticles by using glucose as the reducing agent, resulting in a distinct silver layer on the PMIA surface. The obtained silver deposit was homogeneous and compact. The chemical composition of the modified PMIA fibers was studied by X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray spectroscopy (EDS), and the crystalline structure of the silver-coated PMIA fibers was characterized by powder X-ray diffraction (XRD). The topography of the modified PMIA fibers was investigated by scanning electron microscopy (SEM). The four-point probe resistivity meter was used to study the electrical resistivity of the silver-coated PMIA fibers, the results indicated that the electrical resistivity could be as low as 0.61 mΩ·cm, with a controllable silver content, and a satisfactory stability by ultrasonic treatment.

Microwave-assisted deposition of silver nanoparticles on bamboo pulp fabric through dopamine functionalization

“…In addition, dopamine can be also used as an agent for reducing silver ions into metallic silver and the seed precursors are formed and grown into silver nanoparticles on substrates [33][34][35].…”

Dopamine‐Based Coatings and Hydrogels: Toward Substitution‐Related Structure–Property Relationships

“…The ionization of the catechol groups in the gel was also confi rmed in the UV spectroscopic analy sis of the fi lm (Figure 8 b) It has been previously demonstrated that catecholfunctionalized polymers can also form reversible hydrogels by crosslinking via chelating association of Fe 3+ cations with the catechol units. [ 45,46 ] We also analyzed the pH behavior of such Fe 3+ crosslinked fi lms for comparison. Interestingly, the pH response was the opposite than that of the covalently crosslinked network.…”

“…Hardening of Fe 3+ -crosslinked PEG-catechol gels with increasing pH has been already reported by other groups based on rheology experiments. [ 45,46 ] A comparison of the frequency and dissipation changes of covalent and Fe 3+ crosslinked fi lms shows that the viscoelastic (i.e., dissipation) change of the Fe 3+ crosslinked network from pH 4 to 10 is ca. 5 times bigger than in the covalently crosslinked network for comparable mass release.…”

Bending properties of carbon/glass and carbon/aramid fabric composites with various stacking structures by the VARTM method

“…Moreover, the aramid fiber has been revealed to be a good reinforcement due to its high tensile properties and excellent thermal resistance. However, aramid fiber composites have low interfacial adhesion due to chemical resistance of aramid in the polymer matrix [29][30][31][32][33].…”