Development and characterisation of functionalised AL‐MCM‐41 reinforced caprolactam toughened DGEBA epoxy‐cyanate ester polymer nanocomposites

Jayasree, Muthu Rajamani; Alagar, Muthukaruppan

doi:10.1002/adv.21849

Cited by 3 publications

(2 citation statements)

References 48 publications

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“…The characteristic peak observed at δ ∼0 ppm was assigned to Si–CH 3 and the peak at δ = 1.636 ppm was attributed to the protons in the C–CH 3 groups. 33 The weak proton resonance of Si–H was observed at δ = 4.227–4.818 ppm for PHS-8-2h-80°C resin. The peaks observed at δ = 6.533–7.646 ppm are assigned to the aromatic protons.…”

Section: Resultsmentioning

confidence: 94%

Preparation of hybrid cyanate ester resin in the presence of polysilazane and its properties

Huo

Guo

Wang

et al. 2020

High Performance Polymers

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A hybrid cyanate ester resin containing polysilazane was prepared via the prepolymerization of bisphenol-A dicyanate ester monomer (BADCy) in the presence of polysilazane (PSZ) under low temperature conditions in a short period of time. Fourier transform-infrared (FT-IR) spectroscopy and nuclear magnetic resonance (NMR) spectroscopy reveal that the polymerization reaction of BADCy can be carried out in the presence of PSZ to obtain a hybrid resin below 100°C and polymethylsilazane (PHS) exhibits an improved prepolymerization effect when compared to polydimethylsilazane (PMS). FT-IR spectroscopy and gel permeation chromatography (GPC) showed that the prepolymerization degree of the PHS/BADCy resin increased upon increasing PHS mass fraction from 0 to 12 wt%, polymerization temperature from 60 to 100°C and polymerization time from 0 to 4 h. The PHS/BADCy hybrid resins samples were prepared and their process properties were investigated by rheometry and Differential scanning calorimetry (DSC). The results indicated that their viscosity was <10 Pa.s in the temperature range of 60–130°C, and the initial curing temperature and curing exothermic enthalpy were 121.9°C and 358.9 J/g, respectively. Furthermore, the cured PHS/BADCy resin possesses excellent thermal and mechanical properties, the 5% weight loss temperature (Td5) and glass transition temperature (Tg) were 424–441°C and 273–282°C, respectively. The cured PHS/BADCy resin with 4 wt% PHS showed the highest flexural strength of 146 MPa and flexural modulus of 4.1 GPa.

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Section: Resultsmentioning

confidence: 94%

Preparation of hybrid cyanate ester resin in the presence of polysilazane and its properties

Huo

Guo

Wang

et al. 2020

High Performance Polymers

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“…The lowest storage modulus was determined for the fibers filled with nAg 100 nm (E = 679 MPa). The increasing value of E' indicated the growing stiffness of PA12 loaded with ACRAZ-172 and ACRAZ-124 could be related to their higher concentration, thus promoting more effective stress transfer, which resulted in the stiffness increasing and hence a higher storage modulus [33]. However, as the storage moduli curve transitioned from a glassy state to a rubbery plateau state above 65 • C, these differences between E became negligible [34].…”

Section: Mechanical Propertiesmentioning

confidence: 98%

The Antifungal Fibers of Polyamide 12 Containing Silver and Metal Oxides

Latko-Durałek,

Rzempołuch,

Staniszewska

et al. 2023

Materials

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The textile market is a vast industry that utilizes antimicrobial polymeric materials, including various types of fabrics, for medical and personal protection applications. Therefore, this study focused on examining four types of antimicrobial fillers, namely, metal oxides (zinc, titanium, copper) and nanosilver, as fillers in Polyamide 12 fibers. These fillers can be applied in the knitting or weaving processes to obtain woven polymeric fabrics for medical applications. The production of the fibers in this study involved a two-step approach: twin-screw extrusion and melt spinning. The resulting fibers were then characterized for their thermal properties (TGA, DSC), mechanical performance (tensile test, DMA), and antifungal activity. The findings of the study indicated that all of the fibers modified with fillers kill Candida albicans. However, the fibers containing a combination of metal oxides and silver showed significantly higher antifungal activity (reduction rate % R = 86) compared to the fibers with only a mixture of metal oxides (% R = 21). Furthermore, the inclusion of metal oxides and nanosilver in the Polyamide 12 matrix hindered the formation of the crystal phase and decreased slightly the thermal stability and mechanical properties, especially for the composites with nanosilver. It was attributed to their worse dispersion and the presence of agglomerates.

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Cyanate ester blends and composites to improve dielectric, mechanical, and thermal performance for functional applications

2023

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Development and characterisation of functionalised AL‐MCM‐41 reinforced caprolactam toughened DGEBA epoxy‐cyanate ester polymer nanocomposites

Cited by 3 publications

References 48 publications

Preparation of hybrid cyanate ester resin in the presence of polysilazane and its properties

Preparation of hybrid cyanate ester resin in the presence of polysilazane and its properties

The Antifungal Fibers of Polyamide 12 Containing Silver and Metal Oxides

Cyanate ester blends and composites to improve dielectric, mechanical, and thermal performance for functional applications

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