Thermal, mechanical, and dielectric properties of graphite reinforced poly(vinylidene fluoride) composites

He, Fu‐An; Fan, Jintu; Lau, Sien-Ting

doi:10.1016/j.polymertesting.2008.08.010

Cited by 90 publications

(68 citation statements)

References 25 publications

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“…trabecular bone (4 to12 MPa and 50 to 500 MPa, respectively [36] ). As the dispersion of fillers in polymer matrix was a significant factor influencing the mechanical properties of polymer composites [37][38][39][40] , the dispersion of nMgO in PHBV matrix with different nMgO content were characterized using SEM (Figure 4). After incorporation of nMgO, some bright spots appeared in the PHBV matrix; their amounts gradually increased with the nMgO content increasing.…”

Section: Resultsmentioning

confidence: 99%

An nMgO containing scaffold: Antibacterial activity, degradation properties and cell responses

Shuai

Guo

Gao

et al. 2024

IJB

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Bone repair failure caused by implant-related infections is a common and troublesome problem. In this study, an antibacterial scaffold was developed via selective laser sintering with incorporating nano magnesium oxide (nMgO) to poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). The results indicated the scaffold exerted high antibacterial activity. The antibacterial mechanism was that nMgO could cause oxidative damage and mechanical damage to bacteria through the production of reactive oxygen species (ROS) and direct contact action, respectively, which resulted in the damage of their structures and functions. Besides, nMgO significantly increased the compressive properties of the scaffold including strength and modulus, due to its excellent mechanical properties and uniform dispersion in the PHBV matrix. Moreover, the degradation tests indicated nMgO neutralized the acid degradation products of PHBV and benefited the degradation of the scaffold. The cell culture demonstrated that nMgO promoted the cellular adhesion and proliferation, as well as osteogenic differentiation. The present work may open the door to exploring nMgO as a promising antibacterial material for tissue engineering. Keywords: Nano magnesium oxide; antibacterial scaffolds; degradation properties; cytocompatibility; mechanical properties

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Section: Resultsmentioning

confidence: 99%

An nMgO containing scaffold: Antibacterial activity, degradation properties and cell responses

Shuai

Guo

Gao

et al. 2024

IJB

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“…However, CTNs are very expensive for large-scale applications. Other conductive fillers such as graphite and its variants are being used provide electrical conductive properties to polymeric matrices [9,10]. Graphite, is very cheap, abundant, has an elevated electrical conductivity (10 4 S · cm −1 ), and increases the mechanical properties of polymers having a reinforcing effect on the polymeric material [10].…”

Section: Introductionmentioning

confidence: 99%

An experimental study of dynamic behaviour of graphite–polycarbonatediol polyurethane composites for protective coatings

Gómez

Culebras

Cantarero

et al. 2013

Applied Surface Science

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Segmented polycarbonatediol polyurethane has been synthesized and modified with different amounts of graphite conductive filler (from 0 to 50 wt %). Thermal and Dynamical thermal analysis behavior of the composites clearly indicates the changes in polyurethane relaxations upon addition of graphite. Broadband Dielectric Spectroscopy has been used to study the dielectric properties of the composites in the frequency range from 10 −2 to 10 7 Hz and temperature window of -140 to 170 • C. Conductivity, relaxation processes associated with different molecular motions, Maxwell-Wagner-Sillars and electrode polarization are discussed and related with the graphite content.

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“…A incorporação desta carga hibrida em uma matriz polimérica pode melhorar efetivamente as propriedades termomecânicas em relação às do polímero puro [7]. O poli(fluoreto de vinilideno) (PVDF) é um importante polímero de engenharia e tem sido amplamente estudado devido a suas boas propriedades mecânicas, boa resistên-cia química, alta permissividade dielétrica e, principalmente, propriedades piezelétricas [8], [9]. O PVDF existe em um total de quatro formas cristalinas distintas: alfa(α), beta(β), gama(γ) e delta(δ) que são diferenciadas pela conformação da ligação C-C ao longo da cadeia principal do polímero [10].…”

Section: Introductionunclassified

Thermal Stability of Poly(vinylidene fluoride)/POSS Nanocomposites

Martins¹,

Oliveira²

2013

Sci. cum Ind.

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In this work PVDF/POSS nanocomposites with different compositions were obtained through melt blending. Their thermal stability was investigated by Simultaneous Thermal Analysis (SDT) (Combined Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA) and Differential Thermal Analysis (DTA). This apparatus was coupled with an Infra-Red Spectrometer. The POSS content did not significantly affect the melting temperature and enthalpy. The degradation enthalpy was affected, being required more energy for the degradation process. This showed that POSS incorporation influenced the PVDF degradation process. The neat PVDF and the nanocomposite with 1% POSS content showed characteristics absorbance bands during the degradation process. However, in the nanocomposite with 5% POSS content these bands showed different intensities which shows that POSS influences the PVDF degradation mechanism. http://dx.doi.org/10.18226/23185279.v1iss1p1

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Thermal, mechanical, and dielectric properties of graphite reinforced poly(vinylidene fluoride) composites

Cited by 90 publications

References 25 publications

An nMgO containing scaffold: Antibacterial activity, degradation properties and cell responses

An nMgO containing scaffold: Antibacterial activity, degradation properties and cell responses

An experimental study of dynamic behaviour of graphite–polycarbonatediol polyurethane composites for protective coatings

Thermal Stability of Poly(vinylidene fluoride)/POSS Nanocomposites

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