Effect of Silane Functionalization on Properties of Poly(Lactic Acid)/Palygorskite Nanocomposites

Kasprzhitskii, Anton; Lazorenko, Georgy; Kruglikov, Alexander; Кучкина, И. О.; Gorodov, V. V.

doi:10.3390/inorganics9010003

Cited by 13 publications

(6 citation statements)

References 58 publications

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“…IR spectra (Figure 5) of both SiO2 (50 nm) and APTES@SiO2 (50 nm) samples are governed by a broad band (950-1250 cm −1 ) with a maximum at 1050 cm −1 , which corresponds to the Si-O-Si bonds [45]. However, after APTES functionalization, two new bands appears at 1490 (Figure 5a) and 690 cm −1 (Figure 5b), being ascribed to bending vibrations of -NH2 [46] and -CH2 and deformation of -CH out of plane [47]. These results are in agreement with a successful SiO2 modification after APTES functionalization.…”

Section: Atr-ftirmentioning

confidence: 97%

APTES-Based Silica Nanoparticles as a Potential Modifier for the Selective Sequestration of CO2 Gas Molecules

et al. 2021

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In this work, we have described the characterization of hybrid silica nanoparticles of 50 nm size, showing outstanding size homogeneity, a large surface area, and remarkable CO2 sorption/desorption capabilities. A wide battery of techniques was conducted ranging from spectroscopies such as: UV-Vis and IR, to microscopies (SEM, AFM) and CO2 sorption/desorption isotherms, thus with the purpose of the full characterization of the material. The bare SiO2 (50 nm) nanoparticles modified with 3-aminopropyl (triethoxysilane), APTES@SiO2 (50 nm), show a remarkable CO2 sequestration enhancement compared to the pristine material (0.57 vs. 0.80 mmol/g respectively at 50 °C). Furthermore, when comparing them to their 200 nm size counterparts (SiO2 (200 nm) and APTES@SiO2 (200 nm)), there is a marked CO2 capture increment as a consequence of their significantly larger micropore volume (0.25 cm3/g). Additionally, ideal absorbed solution theory (IAST) was conducted to determine the CO2/N2 selectivity at 25 and 50 °C of the four materials of study, which turned out to be >70, being in the range of performance of the most efficient microporous materials reported to date, even surpassing those based on silica.

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Section: Atr-ftirmentioning

confidence: 97%

APTES-Based Silica Nanoparticles as a Potential Modifier for the Selective Sequestration of CO2 Gas Molecules

et al. 2021

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“…3(b), the interaction of glutaraldehyde with APTES was observed. Peaks related to the NH 2 group are observed at 1566 cm -1 , C=O at 1713 cm -1 and 1099 cm -1 for Si-O-Si [42,43,44]. Fig.…”

Section: (B)mentioning

confidence: 87%

Aptamer functionalized ZnO thin-film transistor based multiplexed detection of Lead and E. coli in water

Honnali

Ragha

Ashwath

et al. 2022

Preprint

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Background: Contamination of lead (Pb 2+) disturbs biological functions and causes neurotoxicity even at low levels. Pathogens such as Escherichia coli, P. aeruginosa and S. aureus found in packaged drinking water causes infections. Therefore, we demonstrate the multiplexed detection of Pb 2+ and E. coli in water using ZnO thin-film transistor (TFT) arrays. Results: Low voltage ZnO TFTs fabricated by physical vapour deposition were functionalized with APTES-glutaraldehyde molecules. TFTs with such functionalized ZnO surfaces showed good sensitivity and high specificity to the targets. The TFTs showed a detection limit of 27 nM and 10 5 cfu/ml for Pb 2+ and E. coli, respectively with the TFT flat-band voltage (V fb), and hence the TFT transconductance, being dependent on the target concentration. The direct integration of the sensing with the TFT and associated integrated circuits promises high density sensor arrays.Conclusion: The present work highlights the importance of aptamers in the multiplexed detection of different targets using low cost ZnO TFT array.

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“…This attributed to the 3-APE treatment increased the interfacial adhesion between NFH filler and PLA matrix [18]. The silane treatment 3-APE improving the compatibility between NFH filler and PLA matrix [24].…”

Section: Tensile Propertiesmentioning

confidence: 92%

Optimization and Properties of Polylactic Acid (PLA) / Nypa Fruticans Husks (NFH) Biocomposite Films Via Central Composite Design (CCD) Method

Haiba¹,

Rasidi²,

Haider³

et al. 2021

J. Compos. Biodegradable Polym.

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Chemical treatment is one of the recognized methods that can be implemented to improve the overall performances of biocomposite materials. Unfortunately, trial and error methods were used to determine the optimal ratio between percentage of treatment agent and composite’s properties in the past. Hence, this research focuses on the optimization and validation of coupling agent percentage with properties of novel Polylactic Acid (PLA) / Nypa Fruticans Husks (NFH) biocomposite films via Central Composite Design (CCD) Method. Nypa Fruticans husks was grounded to obtain particulate form and mixed with Polylactic acid (PLA) using solvent casting method. Due to the different polarity between Nypa Fruticans Husks and Polylactic Acid, 3-Aminopropyltriethoxysilane was used to enhance the properties of the composite films. Central composite design (CCD) method was used to determine the optimized percentage of 3- Aminopropyltriethoxysilane and analysis of variance various (ANOVA) was performed to develop mathematical model to predict the tensile strength value in the range of factors in this research. Apart from that, the enzymatic biodegradation was also performed to investigate the composite’s degradation rate. It was found that, the incorporation of Nypa Fruticans Husks decreased the tensile strength and elongation at break, whereas the modulus of elasticity and degradation rate increased. However, composite films treated with 3% of 3-APE showed increment pattern in tensile strength and modulus of elasticity but decreased in elongation at break and degradation rate, respectively. The enhancement of the mechanical properties after treated with 3-Aminopropyltriethoxysilane was supported by the SEM micro-graphs and FTIR analysis.

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Effect of Silane Functionalization on Properties of Poly(Lactic Acid)/Palygorskite Nanocomposites

Cited by 13 publications

References 58 publications

APTES-Based Silica Nanoparticles as a Potential Modifier for the Selective Sequestration of CO2 Gas Molecules

APTES-Based Silica Nanoparticles as a Potential Modifier for the Selective Sequestration of CO2 Gas Molecules

Aptamer functionalized ZnO thin-film transistor based multiplexed detection of Lead and E. coli in water

Optimization and Properties of Polylactic Acid (PLA) / Nypa Fruticans Husks (NFH) Biocomposite Films Via Central Composite Design (CCD) Method

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