Thermomechanical characterization of BFRP and GFRP with different degree of conversion

Blaznov, А. N.; Atyasova, E. V.; Shundrina, Inna K.; Samoilenko, V. V.; Firsov, V. V.; Zubkov, Alexandr S.

doi:10.1016/j.polymertesting.2017.03.011

Cited by 17 publications

(7 citation statements)

References 9 publications

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“…16 –19 The previous reported literature suggests that the scaffold material can be synthetic or biological, degradable, or nondegradable depending upon the intended use. 20 –26…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations for preparation of biocompatible feedstock filament of fused deposition modeling (FDM) using twin screw extrusion process

Singh

Ranjan

2017

Journal of Thermoplastic Composite Materials

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Twin screw extrusion (TSE) is one of the commercially established processes for reinforcement of metallic/nonmetallic/ceramic fillers in polymer matrix for tailor-made applications. In this study, biocompatible feedstock filament has been prepared (in-house) for commercial fused deposition modeling (FDM) setup with biocompatible grade polymers, namely polyvinyl chloride and polypropylene which was reinforced with the hydroxyapatite particles. The process parameters (namely, material composition, rotational speed of TSE, die temperature of TSE, HAp particle grain size, and applied load on TSE) were optimized using Taguchi L18 orthogonal array. In this study, mechanical, thermal, and metallurgical properties have been established, and best-feedstock filament wire for development of partial/complete denture on the FDM with functionally graded surfaces properties has been recommended for future applications.

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“…16 –19 The previous reported literature suggests that the scaffold material can be synthetic or biological, degradable, or nondegradable depending upon the intended use. 20 –26…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations for preparation of biocompatible feedstock filament of fused deposition modeling (FDM) using twin screw extrusion process

Singh

Ranjan

2017

Journal of Thermoplastic Composite Materials

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“…Compression and bending tests are the main and most common methods of control of the mechanical properties of BPA [14, 15, 16, 17]. A typical example of load diagrams of the samples with the diameter of 8 mm is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…To improve the mechanical properties and stability of BPA, heat-resistant polymer matrices [15, 16] with modifying finely dispersed additives are used. The properties and structure of the polymer matrix in boundary layers with the basalt fiber are studied by methods of electron microscopy, dynamic mechanical analysis, differential scanning calorimetry, thermogravimetry and other sensitive methods [15, 16].…”

Section: Introductionmentioning

confidence: 99%

“…An urgent problem of use of BPA in construction is confirmation and justification of retention of properties at a high level during long-term operation in a variety of climatic conditions. However, in all the works listed [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], there is no information about a change of properties of BPA for construction purposes under the action of natural climatic conditions of different zones. In [17], the strength of basalt, carbon and glass fibers was studied in accelerated tests simulating the natural weather conditions, but conclusions obtained were not verified by direct climatic tests.…”

Section: Introductionmentioning

confidence: 99%

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Influence of moderately warm and extremely cold climate on properties of basalt plastic armature

Startsev

Лебедев

Кычкин

2018

Heliyon

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Rods of basalt plastic armature (BPA) of a periodic profile with diameters of 6, 8, 10, 16 and 20 mm on the basis of an epoxy matrix were exposed for 30 months on open stands in a moderately warm marine climate of Gelendzhik and 28 months on similar stands in an extremely cold climate of Yakutsk. For initial and exposed BPA samples, changes of mechanical parameters were determined. After the exposure in Yakutsk, an increase of ultimate compression strength by 4–12% is found, depending on the diameter of rods. After the exposure in Gelendzhik, this indicator decreases by 10–17%. Using methods of thermomechanical analysis and dynamic mechanical analysis, linear thermal expansion coefficient and glass transition temperature of epoxy matrix were measured. In an initial state, a transition from a glassy state to a highly elastic one is discovered: an α1-transition at 118 °C and an α2-transition at 149 °C. After climatic action, there were detected a shift of α1-transition to low temperatures and a shift of α2-transition to higher temperatures. Reasons for the change of temperatures of transitions are weakening of a molecular layer and post-curing of the epoxy matrix in a surface layer. These effects are accompanied by an increase of the linear thermal expansion coefficient, moisture diffusion coefficient and maximum moisture saturation after the climatic action on BPA. Fractographic studies discovered presence of pores in a structure of BPA with sizes up to 10–20 μm, a quantity and size of which increase by 20–40% after the climatic action. In general, the studied BPA has high climatic stability and can be used for a long time under the extreme climatic conditions.

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“…Generally, in-situ polymerization, melt intercalation and solution mixing are the common three methods for polymer nanocomposites preparation, where the first two methods considered the basic precursory strategies. The melt intercalation method has more economical and unpretentious than the in-situ polymerization method, however silicate layers full exfoliation is not constantly obtainable [3][4]. Giannelis et al [5] demonstrate melt intercalation and state that melt intercalation technique is considered a basic flow for the preparation of the intercalation polymer nanocomposite more than in-situ intercalative polymerization.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Melt Spun Polypropylene / Montmorillonite Nanocomposite Fibre for Ibuprofen Drug Delivery application

Elsayed¹,

Elsharif

Mohamed³

2018

Egypt. J. Chem.

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P OLYPROPYLENE /Montmorillonite clay nanocomposite was prepared after modification of Montmorillonite (MMT) clay using Dimethyl di (hydrogenated tallow) ammonium chloride modifier. The prepared nanocomposite was characterized using scanning electron microscope (SEM), Fourier-transform infrared (FTIR) and thermal gravimetric analysis (TGA). Fibers of pure polypropylene (PP) and polypropylene/montmorillonite clay nanocomposite (PP/MMT) were produced using melt spinning technique and the prepared fibers were characterized using mechanical properties, water absorption in addition to SEM analysis. The results show that the nanocomposite fibers have higher thermal stability, higher mechanical properties, and lower water absorption than pure polypropylene fibers in addition to high degree in homogeneity between polypropylene and MMT clay in polypropylene/montmorillonite nanocomposite. Ibuprofen drug (IBU) was successfully loaded into polypropylene and polypropylene/montmorillonite clay nanocomposite fiber via solvent immersion method with different drug fiber ratio in presence of glyoxal cross linker. Drug release profile was studied for 120 min and the results showed that about 33% from the initial loaded drug was released from the fiber after one hour of release starting time.

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Thermomechanical characterization of BFRP and GFRP with different degree of conversion

Cited by 17 publications

References 9 publications

Experimental investigations for preparation of biocompatible feedstock filament of fused deposition modeling (FDM) using twin screw extrusion process

Experimental investigations for preparation of biocompatible feedstock filament of fused deposition modeling (FDM) using twin screw extrusion process

Influence of moderately warm and extremely cold climate on properties of basalt plastic armature

Preparation and Characterization of Melt Spun Polypropylene / Montmorillonite Nanocomposite Fibre for Ibuprofen Drug Delivery application

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