Tailored interface resulting in improvement in mechanical properties of epoxy composites containing poly (ether ether ketone) grafted multiwall carbon nanotubes

Katti, Prajakta; Bose, Suryasarathi; Kumar, Sachin

doi:10.1016/j.polymer.2016.08.107

Cited by 36 publications

(21 citation statements)

References 34 publications

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“…Therefore, PFTPC fabric can be used as a UV-shieldable material. To check the UV shielding of recent synthetic materials like functionalized carbon nanotube (CNT), 44 we coated CNT with PU onto cotton fabrics. The composite-coated fabrics were then evaluated for UV-shielding ability (see Figure S1).…”

Section: Resultsmentioning

confidence: 99%

Smart Textiles Coated with Eco-Friendly UV-Blocking Nanoparticles Derived from Natural Resources

Dhineshbabu

Bose

2018

ACS Omega

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Herein, eco-friendly iron titanate nanoparticles, FeTiO 3 (FT), derived from natural resources (like ilmenite sand) were coated onto cotton fabrics (CF) to develop smart textile with enhanced UV-shielding property. The FT nanoparticles were dispersed in a polyurethane (PU) matrix, and the resulting nanocomposite was coated on CF. In addition, few sandwich architectures were designed by rationally stacking CF coated with PU and FT nanoparticles. The resulting sandwich structures blocked UV rays mainly by absorption. FT nanoparticles were comprehensively characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV–vis, vibrating sample magnetometer, and thermogravimetric analysis. FT was suitably surface-functionalized to enhance the quality of dispersion in PU, thereby facilitating effective coating on CF. The latter was systematically evaluated by microscopic and spectroscopic techniques. In addition, flammability of the coated CF was evaluated and the char was assessed to gain insight into the fire-retardant properties. Interestingly, CF coated with FT exhibited a strong UV-shielding ability in sharp contrast to CF coated with PU. Further, the sandwich architecture consisting of CF with FT and PU resulted in an increase in the ultraviolet-protecting factor value to >50 compared to only PU-coated CF. Our results indicate that the sandwich structure holds excellent promise in the quest of designing smart textiles with enhanced UV shielding.

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Section: Resultsmentioning

confidence: 99%

Smart Textiles Coated with Eco-Friendly UV-Blocking Nanoparticles Derived from Natural Resources

Dhineshbabu

Bose

2018

ACS Omega

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“…The covalent method is based on the formation of a chemical bond on the outer CNT wall, which can form a strong interfacial interaction between CNTs and the functionalized agent [4,5]. Katti et al [6] reported that the poly(ether ether ketone) grafted on carboxyl functionalized MWCNTs improved the dispersion of MWCNTs in the epoxy resin by mechanical stirring and exhibited significant enhancement in mechanical properties. Konnola et al [7] showed that hydroxyl terminated poly(ether sulfone) grafted on multi walled carbon nanotubes obviously increased the tensile strength and fracture toughness of the epoxy matrix.…”

Section: Introductionmentioning

confidence: 99%

The Structure and Properties of Polyacrylonitrile Nascent Composite Fibers with Grafted Multi Walled Carbon Nanotubes Prepared by Wet Spinning Method

et al. 2019

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Polyacrylonitrile (PAN) grafted amino-functionalized multi walled carbon nanotubes (amino-MWCNTs) were synthesized by in situ polymerization under aqueous solvent. The grafted MWCNT/PAN nascent composite fibers were prepared by the wet spinning method. Fourier transform infrared spectroscopy and Raman spectroscopy indicated that the amino-MWCNTs and PAN macromolecular chains had interfacial interactions and formed chemical bonds. The grafting content of the PAN polymer on the amino-MWCNTs was up to 73.2% by thermo gravimetric analysis. The incorporation of the grafted MWCNTs improved the degree of crystallization and crystal size of PAN nascent fibers, and changed the thermal properties during exothermic processing in an air atmosphere. Morphology analysis and testing of mechanical properties showed that the grafted MWCNT/PAN nascent composite fibers with a more uniform diameter distribution and larger diameter had higher tensile strength and tensile modulus than the control PAN nascent fibers.

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“…However, the properties of CNTs‐filled polymers are usually restricted by poor dispersion of CNTs . Although some reports revealed that surface functionalizations may help to uniformly disperse CNTs into polymers (such as epoxy), the functionalizations may bring damages to CNTs structures along with increased CNTs costs . So fabricating CNTs‐filled SMP composite with well dispersed CNTs but without CNTs functionalization becomes our goal.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotubes array reinforced shape‐memory epoxy with fast responses to low‐power microwaves

Chen

Xiao-pei

et al. 2019

J of Applied Polymer Sci

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In this study, epoxy shape-memory polymer (ESMP) was infiltrated into the scaffolds of vertically aligned carbon nanotubes (CNTs) array grown by chemical vapor deposition (CVD). In the fabricated CNTs array/ESMP nanocomposite, the CNTs interconnected with each other and a three-dimensional (3D) network of the CNTs was formed. As a result, both thermal conductivity and electrical conductivity of the CNTs array/ESMP nanocomposite were higher than the random CNTs/ESMP composite fabricated by conventional high-speed mechanical stirring. In the random CNTs/ESMP composite, the CNTs aggregated seriously in the matrix. Along the CNTs axis, The CNTs array/ESMP nanocomposite showed a higher modulus and hardness than the random CNTs/ESMP composite, as revealed by nanoindentation tests. Under microwave radiation, the temperature of the CNTs array/ESMP nanocomposite increased more rapidly than pristine ESMP and the random CNTs/ESMP composite. Consequently, the CNTs array/ESMP nanocomposite showed a faster shape recovery speed compared with pristine ESMP and the random CNTs/ESMP composite in their microwavetriggered shape memory behaviors. Especially, the CNTs array/ESMP nanocomposite can recover the deformation fully in response to as low as 60 W microwaves. The presented CNTs array/ESMP nanocomposite with improved mechanical property and fast responses to low-power microwaves may find potential applications in smart devices.

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Tailored interface resulting in improvement in mechanical properties of epoxy composites containing poly (ether ether ketone) grafted multiwall carbon nanotubes

Cited by 36 publications

References 34 publications

Smart Textiles Coated with Eco-Friendly UV-Blocking Nanoparticles Derived from Natural Resources

Smart Textiles Coated with Eco-Friendly UV-Blocking Nanoparticles Derived from Natural Resources

The Structure and Properties of Polyacrylonitrile Nascent Composite Fibers with Grafted Multi Walled Carbon Nanotubes Prepared by Wet Spinning Method

Carbon nanotubes array reinforced shape‐memory epoxy with fast responses to low‐power microwaves

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