Synthesis and Evaluation of Mechanical Property of Chitosan/PVP Blend Through Nanoindentation-A Nanoscale Study

Kumar, Ritesh; Mishra, Indrani; Kumar, G. Hemath

doi:10.1007/s10924-021-02143-0

Cited by 17 publications

(25 citation statements)

References 30 publications

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“…These new peaks indicate the stretching of C O (between 1735 and 1750 cm À1 ) and C O (between 1000 and 1300 cm À1 ) of the ester group, respectively. [28] These new peaks appear due to the ester linkage formation and confirm the esterification reaction (Figure 8A). The 3450 cm À1 band in the 3-PERL composite (Figure 8A) indicates hydrogen bonds forming between the hydrogen atom of an OH group of the functional groups of PACF with the groups of the MAH of the3-PERL.…”

Section: Morphologysupporting

confidence: 63%

Development of eco‐friendly bio‐composite by reinforcing pineapple fruit waste crown fiber to ethylene‐propylene rubber modified polyethylene

et al. 2022

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Current study discovers society's pineapple waste management issue a new approach. The pineapple crown fiber (PACF) has been used as reinforcement into a maleic anhydride (MAH) grafted ethylene‐propylene rubber (EPR) modified low‐density polyethylene (LDPE). The PACF reinforced composites with 10 wt% EPR content showed much better mechanical properties than the tensile and flexural properties demonstrated by the composites consisting of only PACF and LDPE only. The highest tensile strength (~29 MPa) and modulus of elasticity (~851 MPa) were obtained for the composite consisting of 30 wt% of PACF in the base matrix. Similarly, the highest flexural strength (~27 MPa) and modulus (~1814 MPa) were recorded for the same composition. Attenuated total reflection‐infrared spectroscopy confirmed a new bond between PACF and base matrix, establishing good compatibility between PACF and base matrix. The morphological analysis gives an insight of the microstructure and fracture behavior of the composites, which confirms an excellent wetting of the fibers by the base matrix. Thermogravimetry of the composites showed the increment in the PACF content decreased the thermal degradation temperature of the composites. DMA and differential scanning calorimetry demonstrated an increment into the storage modulus and crystallization temperature of all the composites compared to pristine LDPE.

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Section: Morphologysupporting

confidence: 63%

Development of eco‐friendly bio‐composite by reinforcing pineapple fruit waste crown fiber to ethylene‐propylene rubber modified polyethylene

et al. 2022

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“…Additionally, the sharp peaks at approximately 1380 cm −1 in all HA/PVP spectra were attributed to carboxyl groups (COO − ) that take part in one or more hydrogen bonds [34,37]. Furthermore, broadening and shifting of the carbonyl bands from 1649 cm −1 to lower frequencies confirmed the interactions between HA and PVP [23]. Furthermore, the absorption bands between 3300 cm −1 and 3500 cm −1 were assigned to the intra-and intermolecular hydrogen bonding of OH groups [34,38].…”

Section: Infrared Spectroscopymentioning

confidence: 83%

“…The carbonyl stretching vibrations of the carboxylate group of HA films appeared at 1605 cm −1 and 1403 cm −1 [15,34,35]. In the case of PVP films, the spectra show intense bands at 1649 cm −1 , corresponding to the stretching vibrations of the carbonyl group (C=O) in the pyrrolidone ring [23,36]. Analyses of HA/PVP blend spectra suggested interactions existing between polymer molecules, which were associated with the OH and carboxylate groups in HA and the carbonyl group (C=O) in PVP.…”

Section: Infrared Spectroscopymentioning

confidence: 99%

“…In this Molecules 2021, 26, 5233 2 of 10 research, we use poly(N-vinylpyrrolidone) (PVP) to modify HA materials for potential cosmetic, biomedical and packaging applications. It is well known that PVP is a synthetic, water-soluble, non-ionic polymer, which possesses many excellent properties such as film formation ability, biocompatibility, non-toxicity, remarkable chemical and thermal stability, excellent solubility in water and many organic solvents and applicability in the preparation of biomaterials [19][20][21][22][23]. In addition, PVP has been approved by the US Food and Drug Administration as a safe polymer for biological experiments; most that are tested are from the biomedical and pharmaceutical fields [21,24,25].…”

Section: Introductionmentioning

confidence: 99%

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Characterisation of Hyaluronic Acid Blends Modified by Poly(N-Vinylpyrrolidone)

Lewandowska

Szulc

2021

Molecules

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The viscosity behaviour and physical properties of blends containing hyaluronic acid (HA) and poly(N-vinylpyrrolidone) (PVP) were studied by the viscometric technique, steady shear tests, tensile tests and infrared spectroscopy. Viscometric and rheological measurements were carried out using blends of HA/PVP with different HA weight fractions (0, 0.2, 0.5, 0.8 and 1). The polymer films and HA/PVP blend films were prepared using the solution casting method. The study of HA blends by viscometry showed that HA/PVP was miscible with the exception of the blend with high HA content. HA and its blends showed a shear-thinning flow behaviour. The non-Newtonian indices (n) of HA/PVP blends were calculated by the Ostwald–de Waele equation, indicating a shear-thinning effect in which pseudoplasticity increased with increasing HA contents. Mechanical properties, such as tensile strength and elongation at the break, were higher for HA/PVP films with wHA = 0.5 compared to those with higher HA contents. The elongation at the break of HA/PVP blend films displayed a pronounced increase compared to HA films. Moreover, infrared analysis confirmed the existence of interactions between HA and PVP. The blending of HA with PVP generated films with elasticity and better properties than homopolymer films.

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“…Therefore, it is necessary to modify Chit-based materials via the addition of other substances such as ionic liquids, inorganic additives, clays, hydroxyapatites, and other polymers. Over the past two decades, many studies investigated the physicochemical properties and structure of Chit materials using different experimental techniques [ 7 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. Reports show that the mechanical properties of Chit composites increase significantly with increasing concentrations of clays [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Rheological and Film-Forming Properties of Chitosan Composites

Lewandowska

Szulc

2022

IJMS

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Chitosan (Chit) and its composite films are widely used in biomedical, cosmetic, and packaging applications. In addition, their properties can be improved and modified using various techniques. In this study, the effect of the type of clay in Chit composites on the structure, morphology, and physical properties of Chit solution and films was tested. The liquid flow properties of Chit solution with and without clay were carried out using the steady shear test. Chit films containing clay were obtained using the solution-casting method. The morphology, structure, and physical properties of the films were characterized by scanning electron microscopy, atomic force microscopy, infrared spectroscopy, swelling behavior, and tensile tests. The results reveal that for the Chit solution with clay (C1) containing 35 wt.% dimethyl dialkyl (C14–C18) amine, the apparent viscosity is the highest, whereas Chit solutions with other clays show reduced apparent viscosity. Rheological parameters of Chit composites were determined by the power law and Cross models, indicating shear-thinning behavior. Analytical data were compared, and show that the addition of clay is favorable to the formation of intermolecular interactions between Chit and clay, which improves in the properties of the studied composites.

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Synthesis and Evaluation of Mechanical Property of Chitosan/PVP Blend Through Nanoindentation-A Nanoscale Study

Cited by 17 publications

References 30 publications

Development of eco‐friendly bio‐composite by reinforcing pineapple fruit waste crown fiber to ethylene‐propylene rubber modified polyethylene

Development of eco‐friendly bio‐composite by reinforcing pineapple fruit waste crown fiber to ethylene‐propylene rubber modified polyethylene

Characterisation of Hyaluronic Acid Blends Modified by Poly(N-Vinylpyrrolidone)

Rheological and Film-Forming Properties of Chitosan Composites

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