Influence of MWCNTs modified by silane coupling agent KH570 on the properties and structure of MWCNTs/PLA composite film

Wu, Gaihong; Liu, Shu-Qiang; Wu, Xiaoyun; Ding, Xuemei

doi:10.1007/s10965-016-1024-3

Cited by 28 publications

(11 citation statements)

References 26 publications

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“…Further, at the same degradation time points, the degradation degree of pure PLA sutures (i.e., Figure 5b,c) was much more serious than that of CNTs/PLA sutures (i.e., Figure 5e,f). It was because the CNTs reinforced PLA sutures and enhanced their crystallinity and orientation [34,37], thence the CNTs/PLA sutures degraded more slowly. These results indicate that CNTs can slow down the degradation rate of sutures, which will be further corroborated later.…”

Section: Resultsmentioning

confidence: 99%

Degradation Behavior In Vitro of Carbon Nanotubes (CNTs)/Poly(lactic acid) (PLA) Composite Suture

Liu

Chen

et al. 2019

Polymers

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Poly(lactic acid) (PLA) suture can be absorbed by the human body, and so have wide applications in modern surgery operations. The degradation period of PLA suture is expected to meet with the healing time of different types of wounds. In order to control the degradation period of the PLA suture, the carbon nanotubes (CNTs) were composited with PLA suture, and the degradation experiment in vitro was performed on sutures. The structure and properties of sutures during degradation, such as surface morphology, breaking strength, elongation, mass and chemical structure, were tracked and analyzed. The results indicated that the degradation brought about surface defects and resulted in 13.5 weeks for the strength valid time of the original PLA suture. By contrast, the strength valid time of the CNTs/PLA suture was increased to 26.6 weeks. Whilst the toughness of both the pure PLA and CNTs/PLA sutures decreased rapidly and almost disappeared after 3 to 4 weeks of degradation. The mass loss demonstrated that the time required for complete degradation of the two sutures was obviously different, the pure PLA suture 49 weeks, while CNTs/PLA sutures 63 to 73 weeks. The research proved that CNTs delayed PLA degradation and prolonged its strength valid time in degradation.

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Section: Resultsmentioning

confidence: 99%

Degradation Behavior In Vitro of Carbon Nanotubes (CNTs)/Poly(lactic acid) (PLA) Composite Suture

Liu

Chen

et al. 2019

Polymers

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“…30 Besides, the spectrum of UMBT particles exhibits a peak at 3440 cm −1 which confirms the presence of hydroxyl groups (–OH) on the surface. 31 Alkoxy groups (OCH 3 ) can alcoholize with the hydroxyl groups on the surface particle and produce strong interactions between the KH-570 and BaTiO 3 particles. This indicates the good adherence of KH-570 to the surface of BaTiO 3 particles.…”

Section: Resultsmentioning

confidence: 99%

Electrical and mechanical characterization of vulcanized natural rubber filled with BaTiO₃ ceramic filler

El-Gamal

2019

Journal of Thermoplastic Composite Materials

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Ceramic rubber composites made of natural rubber (NR) loaded with various concentrations of barium titanate (BaTiO3) particles were prepared by mixing and hot pressing. A silane coupling agent (KH-570) was utilized to modify the BaTiO3 particles surface. The successful attachment of the coupling agent to the BaTiO3 particles was confirmed by Fourier transforms infrared spectroscopy. The influence of surface modified BaTiO3 (SMBT) particles concentration on the morphological, cure, mechanical, and electrical properties of the resulting samples was explored. The elongation at break and the tensile strength decreased with the addition of SMBT particles, while the hardness of composites increased. An enhancement of the dielectric constant ( ε′) of the composites was observed by incorporation of SMBT particles. The measured ε′ of the composites was modeled using the theories of a heterogeneous medium. The dielectric loss showed a clear peak at high frequency, indicating the relaxation process of the orientational polarization.

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“…Even though there was a few attempts to use the substances of the eggshell for various applications, since they considered a potential source for minimizing the environmental impact and gain higher profits [17,18] Many researchers have studied the impact of different types of materials on the properties of polylactic acid, Nidhi Pal et.al, studied the effect of both cellulose and reduced graphene oxide in PLA, results showed that it has potential to be used in food packaging applications because of their antibacterial activity of against gam positive and negative pathogens [19]. Gai-Hong Wu et.al, studied the effect of multi-walled carbon nanotube on PLA using the casting/solvent evaporation process [20]. On the other hand, Zhidan Lin prepared composite by adding eggshell to polypropylene through the melt blending method to have high mechanical properties [21], while A. G. Supri made another composite by incorporating the eggshell powder to low-density polyethylene using the same method [22] both of them have a problem with interfacial bonding between the filler and the matrix so that Zhidan Lin used pimelic acid and A. G. Supri used Grafted Maleic Anhydride (PE-g-MAH) as a compatibilizer.…”

Section: Introductionmentioning

confidence: 99%

The Impact of UnCalcined & Calcined Eggshell Powder as BioFiller for Polylacticacid

Abdulkareem

Bohan²,

Ati³

2020

DJES

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The present study includes preparation of eggshell powder from the waste eggshell by milling followed by calcination at 500°C under ambient atmosphere. Composites of uncalcined and calcined eggshell / PLA with contents of 10, 20 and 30 wt% prepared by casting method. The effect of uncalcined and calcined egg shell on structural and tensile properties of polylactic acid (PLA) were studied. The prepared composites were antibacterial tested against Escherichia coli and Staphylococcus aureus (S. aureus) bacteria. Results showed the crystallinity of the synthesized films induced by egg shell. Ultimate tensile strength increased gradually with increment of the filler content and the highest ultimate strength at 30 wt. % this may be attributed to good compatibility between the egg shell and the PLA. The results of bactericidal against Escherichia coli bacteria were lower for PLA and its composites as compared with staph aureus

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Influence of MWCNTs modified by silane coupling agent KH570 on the properties and structure of MWCNTs/PLA composite film

Cited by 28 publications

References 26 publications

Degradation Behavior In Vitro of Carbon Nanotubes (CNTs)/Poly(lactic acid) (PLA) Composite Suture

Degradation Behavior In Vitro of Carbon Nanotubes (CNTs)/Poly(lactic acid) (PLA) Composite Suture

Electrical and mechanical characterization of vulcanized natural rubber filled with BaTiO₃ ceramic filler

The Impact of UnCalcined & Calcined Eggshell Powder as BioFiller for Polylacticacid

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Influence of MWCNTs modified by silane coupling agent KH570 on the properties and structure of MWCNTs/PLA composite film

Cited by 28 publications

References 26 publications

Degradation Behavior In Vitro of Carbon Nanotubes (CNTs)/Poly(lactic acid) (PLA) Composite Suture

Degradation Behavior In Vitro of Carbon Nanotubes (CNTs)/Poly(lactic acid) (PLA) Composite Suture

Electrical and mechanical characterization of vulcanized natural rubber filled with BaTiO3 ceramic filler

The Impact of UnCalcined & Calcined Eggshell Powder as BioFiller for Polylacticacid

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Product

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Electrical and mechanical characterization of vulcanized natural rubber filled with BaTiO₃ ceramic filler