Investigation of Structural, Rheological and Thermal Properties of PMMA/ONi-Al LDH Nanocomposites Synthesized <italic style="font-style: italic">via</italic> Solvent Blending Method: Effect of LDH Loading

Chakraborty Samarshi; Kumar Manish; Suresh Kelothu; Pugazhenthi G.

doi:10.1007/s10118-016-1786-4

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Investigation of Structural, Rheological and Thermal Properties of PMMA/ONi-Al LDH Nanocomposites Synthesized via Solvent Blending Method: Effect of LDH Loading

Papers | Updated：2022-02-21

- Investigation of Structural, Rheological and Thermal Properties of PMMA/ONi-Al LDH Nanocomposites Synthesized via Solvent Blending Method: Effect of LDH Loading
- Vol. 34, Issue 6, Pages: 739-754(2016)
- Affiliations：
  
  Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
- Author bio：
  
  G. Pugazhenthi, E-mail: pugal@iitg.ernet.in
- Funds：
- DOI：10.1007/s10118-016-1786-4
  CLC：
- Received：16 November 2015，
  
  Revised：2016-1-19，
  
  Accepted：24 January 2016，
  
  Published：2016-06
- Accepted：
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Chakraborty Samarshi, Kumar Manish, Suresh Kelothu, et al. Investigation of Structural, Rheological and Thermal Properties of PMMA/ONi-Al LDH Nanocomposites Synthesized via Solvent Blending Method: Effect of LDH Loading[J]. 2016, 34(6): 739-754. DOI: 10.1007/s10118-016-1786-4.
DOI：

Chakraborty Samarshi, Kumar Manish, Suresh Kelothu, et al. Investigation of Structural, Rheological and Thermal Properties of PMMA/ONi-Al LDH Nanocomposites Synthesized via Solvent Blending Method: Effect of LDH Loading[J]. 2016, 34(6): 739-754. DOI: 10.1007/s10118-016-1786-4. DOI：

摘要

Abstract

This article addresses the synthesis of organically tailored Ni-Al layered double hydroxide (ONi-Al LDH) and its use in the fabrication of exfoliated poly(methyl methacrylate) (PMMA) nanocomposites. The pristine Ni-Al LDH was initially synthesized by co-precipitation method and subsequently modified using sodium dodecyl sulfate to obtain ONi-Al LDH. Nanocomposites of PMMA containing various amounts of modified Ni-Al LDH (3 wt%-7 wt%) were synthesized

via

solvent blending method to investigate the influence of LDH content on the properties of PMMA matrix. Several characterization methods such as X-ray diffraction (XRD)

transmission electron microscopy (TEM)

Fourier transform infrared spectroscopy (FTIR)

rheological analysis

differential scanning calorimetry (DSC) and thermo gravimetric analysis (TGA)

were employed to examine the structural

viscoelastic and thermal properties of PMMA/OLDH nanocomposites. The results of XRD and TEM examination confirm the formation of partially exfoliated PMMA/OLDH nanocomposites. The FTIR results elucidate that the characteristic bands for both pure PMMA and modified LDH are present in the spectra of PMMA/OLDH nanocomposites. Rheological analyses were carried out to examine the adhesion between polymer matrix and fillers present in the nanocomposite sample. The TGA data indicate that the PMMA nanocomposites exhibit higher thermal stability when compared to pure PMMA. The thermal decomposition temperature of PMMA/OLDH nanocomposites increases by 28 K compared to that of pure PMMA at 15% weight loss as a point of reference. In comparison with pure PMMA

the PMMA nanocomposite containing 7 wt% LDH demonstrates improved glass transition temperature (

) of around 3 K. The activation energy (

)

reaction orders (

) and reaction mechanism of thermal degradation of PMMA/OLDH nanocomposites were evaluated using different kinetic models. Water uptake capacity of the PMMA/OLDH nanocomposites is less than that of the pure PMMA.

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Investigation of Structural, Rheological and Thermal Properties of PMMA/ONi-Al LDH Nanocomposites Synthesized via Solvent Blending Method: Effect of LDH Loading

DOI：10.1007/s10118-016-1786-4

摘要

Abstract

关键词

Keywords

references