Influence of coupling agent chain lengths on interfacial performances of carbon fiber and polyarylacetylene resin composites

Zhu, Jiang; Liu, L.; Huang, Yudong; Ren, Han

doi:10.1002/sia.3074

Cited by 10 publications

(5 citation statements)

References 26 publications

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“…One of the most effective methods is by coating the carbon fibers with a ductile polymeric material to modify the mode of failure and thus the potential energy absorbing capacity of their composites [5][6][7]. However, many researches showed that thin coatings were finite in toughening the composites whereas thick coatings resulted in the reduction of composite strength and modulus [8,9].…”

Section: Introductionmentioning

confidence: 99%

Formation of interfacial network structure via photo-crosslinking in carbon fiber/epoxy composites

Deng¹,

Zhao²,

Lin³

et al. 2014

Express Polym. Lett.

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Abstract.A series of diblock copolymers (poly(n-butylacrylate)-co-poly(2-hydroxyethyl acrylate))-b-poly(glycidyl methacrylate) ((PnBA-co-PHEA)-b-PGMA), containing a random copolymer block PnBA-co-PHEA, were successfully synthesized by atom transfer radical polymerization (ATRP). After being chemically grafted onto carbon fibers, the photosensitive methacrylic groups were introduced into the random copolymer, giving a series of copolymers (poly(n-butylacrylate)-co-poly(2-methacryloyloxyethyl acrylate))-b-poly(glycidyl methacrylate)((PnBA-co-PMEA)-b-PGMA). Dynamic mechanical analysis indicated that the random copolymer block after ultraviolet (UV) irradiation was a lightly crosslinked polymer and acted as an elastomer, forming a photo-crosslinked network structure at the interface of carbon fiber/epoxy composites. Microbond test showed that such an interfacial network structure greatly improved the cohesive strength and effectively controlled the deformation ability of the flexible interlayer. Furthermore, three kinds of interfacial network structures, i) physical crosslinking by H-bonds, ii) chemical crosslinking by photopolymerization, and iii) interpenetrating crosslinked network by photopolymerization and epoxy curing reaction were received in carbon fiber/epoxy composite, depending on the various preparation processes.

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Section: Introductionmentioning

confidence: 99%

Formation of interfacial network structure via photo-crosslinking in carbon fiber/epoxy composites

Deng¹,

Zhao²,

Lin³

et al. 2014

Express Polym. Lett.

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“…These entanglements are fixed by polymer-resin curing. As a result, long chains on the fiber surface produce strong chain interactions at the composite interface 55) . Hussain et al 56) demonstrated that the hydrocarbon chains plasticize and improve the compatibility of the inorganic particle to the epoxy when titanate is bonded to an inorganic filler.…”

Section: Effect Of Chain Length Of the Coupling Agentmentioning

confidence: 99%

Review of titanate coupling agents and their application for dental composite fabrication

Elshereksi

Ghazali

Muchtar

et al. 2017

Dental Materials Journal

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Silane is a dominant coupler that is widely used in dentistry to promote adhesion among the components of dental composites. Silica-based fillers can be easily silanized because of their similarly ordered structure. However, silane is hydrolytically degraded in the aqueous oral environment and inefficiently bonds to non-silica fillers. Thus, the development of hydrolytically stable dental composites is an important objective in the research on dental materials. Titanate coupling agents (TCAs) exhibit satisfactory interfacial bonding, enhanced homogeneous filler dispersion, and improved mechanical properties of the composites. Titanates also provide superior hydrolytic stability in wet environments, which should be considered in fabricating dental composites. The addition of a small amount of titanates can improve the resistance of the composites to moisture. This paper reviews the effects of the instability of silanes in moisture on the performance of dental composites and presents TCAs as alternative couplers to silanes for fabricating dental composites.

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“…This result could be attributed to the better hydrophobicity of TCA than silane because of its long hydrocarbon chain that could provide a stable interfacial bond in humid environments, thereby increasing toughness. Jiang et al 47 reported that chain lengths significantly influence interfacial adhesion in composites. Long-chains on the fiber surface also augment the interfacial shear strength.…”

Section: Effect Of Sbf Exposure On Fracture Toughnessmentioning

confidence: 99%

The influence of titanate coupling agent on the performance of barium titanate/PMMA denture base nanocomposites after SBF storage

Elshereksi

Muchtar

Azhari

2020

Journal of Thermoplastic Composite Materials

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Poly(methyl methacrylate) (PMMA)/nanobarium titanate (NBT) composite has potential application in denture base materials. The denture base materials should be stable in the wet environment and exhibit good mechanical properties. This study aimed to evaluate the effectiveness of titanate coupling agent (TCA) on NBT behavior after soaking in the simulated body fluid (SBF) and to determine the effect of SBF exposure on fracture toughness of the PMMA nanocomposites. Silanated (Si-NBT), titanated (Ti-NBT), and pure NBT (Un-NBT) at 5% concentration (by mass) were incorporated in the PMMA matrix. NBT was sonicated in MMA prior to mixing with PMMA. SBF absorption, solubility, and leaching were measured, and fracture toughness of the PMMA nanocomposites was evaluated after soaking. The results showed that Titanated samples displayed lower SBF absorption capability and solubility values than the silanated ones. Moreover, the leachability of filler elements (Ba and Ti) was substantially reduced by titanation (54% and 61%, respectively), whereas the Si-NBT/PMMA revealed values of 12.3% and 7% respectively. Significant differences in fracture toughness were observed among the tested samples after 6 weeks of aging in SBF ( p < 0.05). Although no notable changes in the KIC of pure PMMA and Un-NBT/PMMA samples were detected, KIC was improved by 20% after titanation. In addition, the fracture toughness of the titanated samples was higher than that of the silanated ones by 26%. In conclusion, TCA exhibited better stability in moisture than silane. Degradation resistance to moisture obtained with titanated NBT could lead to the promotion of clinical longevity of the composites.

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Influence of coupling agent chain lengths on interfacial performances of carbon fiber and polyarylacetylene resin composites

Cited by 10 publications

References 26 publications

Formation of interfacial network structure via photo-crosslinking in carbon fiber/epoxy composites

Formation of interfacial network structure via photo-crosslinking in carbon fiber/epoxy composites

Review of titanate coupling agents and their application for dental composite fabrication

The influence of titanate coupling agent on the performance of barium titanate/PMMA denture base nanocomposites after SBF storage

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