Synthesis, characterizations, and mechanical properties of structurally modified poly(vinyl alcohol)

Anbarasan, R.; Pandiarajaguru, R.; Attur, Ravindra Prabhu; Dhanalakshmi, V.; Jayalakshmi, A.; Dhanalakshmi, B.; Nisha, S; Gandhi, S.; Jayalakshmi, T.

doi:10.1002/app.32033

Cited by 37 publications

(35 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FTIR‐RI confirmed the decrease in crystallinity of PVA through the formation of ketone and olefin groups. This is in accordance with our earlier communications 36–38…”

Section: Resultssupporting

confidence: 94%

“…The T d.w of PVA at 2 and 10% weight loading of NiO is 95.8 and 82.1°C respectively. This indicated that while increasing the % weight of NiO, the amount of physisorbed water molecules by PVA was drastically reduced i.e., the hydrophobicity is increased with the increase of NiO content, due to its nano size 36, 37. The decrease in water content with the increase of NiO content was already supported by the TGA of PVA/NiO systems [Fig.…”

Section: Resultsmentioning

confidence: 85%

“…This is in accordance with our earlier communications. [36][37][38] High-resolution transmission electron microscopy Figure 12 shows the HRTEM images of the 10% weight nano NiO loaded PVA matrix. Figure 12(a) indicates the intercalation of PVA chain into the basal spacing of layered NiO.…”

Section: Thermogravmetric Analysismentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and characterization of nano‐sized NiO and its surface catalytic effect on poly(vinyl alcohol)

Gandhi¹,

Nagalakshmi²,

Baskaran³

et al. 2010

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Nickel oxide (NiO) nano particle is synthesized by Ultrasound assisted one pot method and thus synthesized nano NiO is mixed with poly(vinyl alcohol) (PVA) to prepare the PVA/NiO nanocomposite. The influence of the composition on the structural modification on the composite is evaluated. The particle size and morphology of NiO nano material is confirmed by HRTEM. The structure and properties of the PVA/NiO nanocomposite material are characterized by FTIR, XRD, UV-Visible spectroscopy, DSC, TGA, and HRTEM. The synthesized PVA nanocomposite underwent hydrolytic oxidation reaction assisted by the effect of nano-sized NiO.

show abstract

“…The FTIR‐RI confirmed the decrease in crystallinity of PVA through the formation of ketone and olefin groups. This is in accordance with our earlier communications 36–38…”

Section: Resultssupporting

confidence: 94%

Section: Resultsmentioning

confidence: 85%

See 1 more Smart Citation

Synthesis and characterization of nano‐sized NiO and its surface catalytic effect on poly(vinyl alcohol)

Gandhi¹,

Nagalakshmi²,

Baskaran³

et al. 2010

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…For PLFM, the O-H stretching vibration absorption peak of hydroxyl groups is found at 3440 cm -1 , the double alcohol vibration absorption peak at 1700 to 1720 cm -1 , the stretching vibration absorption peak of the secondary alcohol at 1069 cm -1 , and the C-O-C-O-C stretching vibration peak at 1242 and 1018 cm -1 . The spectrum of PLCFM was similar to that of PLFM, except that the increase in the intensity of the absorption peak at 1180 to 1080 cm -1 , which was mostly due to C-O-Si and Si-O-Si, appeared during the reaction process (Anbarasan et al 2010). At the same time, the primary alcohol shock absorption peak at 1012 cm -1 was weakened because of the increased primary alcohol content in the reaction.…”

Section: Fig 4 Condensation Reaction Of Plfm and Teos Hydrolysismentioning

confidence: 55%

Studies of Polyvinyl Alcohol/Alkali Lignin/Silica Composite Foam Material (PLCFM)

Luo¹,

Lü²,

Ren³

et al. 2015

BioResources

View full text Add to dashboard Cite

This study investigates methods for improving the heat resistance of polyvinyl alcohol/alkali lignin foam material (PLFM). Tetraethoxysilane (TEOS) was used as a precursor to prepare PLCFM by a sol-gel method. The PLCFM, prepared with different levels of TEOS, was characterized by Fourier Transform Infrared spectrometry (FTIR), Differential Scanning Calorimetry (DSC), and Thermogravimetric Analysis (TGA). The results indicated that the addition of silica notably improved the heat resistance properties and the initial decomposition temperature of the foam and exhibited good biocompatibility with the polyvinyl alcohol (PVOH) and alkali lignin. The melting temperature of the PLCFM also increased significantly. It reached 268 °C when the silica content was 10%, which was 110 °C higher than that of PLFM. The mechanical properties were also improved to 27.42 MPa.

show abstract

“…The structure of PVA was modified with 4‐maleiidohenylisocyanate and its thermal and mechanical properties were tested . Similarly, the structure of PVA was modified with chitosan, rifambin, glycidylmethacrylate, glycoside, N ‐alkyl‐substituted carbamates, 3‐diethylaminopropylamine, succinimide, propargylamine, poly(ɛ‐caprolactone), diethylchlorophosphate, soy bean oil triglycerides, and natural rubber latex for various end user applications. In 2010, Wang and Hsieh modified the structure of PVA with PEG diacrylchloride.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and drug release activity of structurally modified poly(vinyl alcohol)

Jeyaraman¹,

Jeyabala²,

Meenarathi³

et al. 2018

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

The main aim of the present investigation is synthesis of drug-grafted poly(vinyl alcohol) (PVA) for sustainable drug release in order to avoid bulk release and unwanted side effects. Here, the PVA was structurally modified with five different drug molecules in DMSO medium at 85 8C under N 2 atmosphere for 2 h. The structure of modified PVA was confirmed by FTIR and 1 H NMR spectra and further it was characterized by TGA, DSC, and SEM. The tensile strength and % elongation for the structurally modified PVA were determined. The FTIR spectrum showed peaks corresponding to the C@O and CAS stretching due to the grafted drug molecules. The 1 H NMR spectrum showed the acrylic CH 2 proton signal of PVA around 1.6 ppm. The SEM showed different surface morphology for the structurally modified PVA. The mechanical properties of the structurally modified PVA was found to be reduced due to the presence of traces of solvent molecules and the breaking of inter-and intramolecular hydrogen bonding. The sustainable drug release through hydrolysis mechanism was tested at the pH of 7.3. Generally, the drug release followed the Korsmeyer-Peppas model with Fickian drug transportation mechanism except Furosemide (Fur)-grafted PVA system at the pH of 7.3. V C 2018Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46620.

show abstract

Synthesis, characterizations, and mechanical properties of structurally modified poly(vinyl alcohol)

Cited by 37 publications

References 32 publications

Synthesis and characterization of nano‐sized NiO and its surface catalytic effect on poly(vinyl alcohol)

Synthesis and characterization of nano‐sized NiO and its surface catalytic effect on poly(vinyl alcohol)

Studies of Polyvinyl Alcohol/Alkali Lignin/Silica Composite Foam Material (PLCFM)

Synthesis, characterization, and drug release activity of structurally modified poly(vinyl alcohol)

Contact Info

Product

Resources

About