Effect of organically modified Ni–Al layered double hydroxide loading on the thermal and morphological properties of l-methionine containing poly(amide-imide) nanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (35) ◽  
pp. 28007-28013 ◽  
Author(s):  
Shadpour Mallakpour ◽  
Mohammad Dinari
Keyword(s):  
Layered Double Hydroxide ◽  
Morphological Properties ◽  
Organically Modified ◽  
Morphological Behavior ◽  
Double Hydroxide

This work deals with the synthesis of an organically modified Ni–Al layered double hydroxide (LDH) and the effect of the LDH loading on the thermal and morphological behavior of poly(amide-imide)/Ni–Al LDH nanocomposites.

The synthesis of organically modified layered double hydroxide and its effect on the structure and physical properties of low-density polyethylene/ethylene–vinyl acetate blends

2019 ◽  
Vol 27 (5) ◽  
pp. 287-298
Author(s):  
Xincheng Guo ◽  
Mengqi Tang ◽  
Na Wang ◽  
Lingtong Li ◽  
Yifan Wu ◽  
...  
Keyword(s):  
Vinyl Acetate ◽  
Layered Double Hydroxide ◽  
Organic Anion ◽  
Ethylene Vinyl Acetate ◽  
Degree Of Crystallinity ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Organically Modified ◽  
The Matrix ◽  
Double Hydroxide

Organically modified layered double hydroxide (OM-LDH) was synthesized via anion exchange reaction and potassium monolauryl phosphate (MAPK) was used as an intercalator. The OM-LDH nanofillers were embedded into low-density polyethylene/ethylene–vinyl acetate (LDPE/EVA) via melt blending process which provided LDPE/EVA/OM-LDH nanocomposites. The structure and properties of the fabricated samples were characterized through Fourier transform infrared spectroscopy, X-ray diffraction techniques, scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry, and tensile testing. The results showed that the organic anion was intercalated into the interlayer region of LDH and enlarged the interlayer distance. The TGA results of the nanocomposites showed significantly improved thermal stability at a higher temperature when containing 6 wt% OM-LDH due to the good dispersion of OM-LDH in the matrix. The DSC data indicated that the degree of crystallinity was increased obviously due to the incorporation of OM-LDH in the matrix. The formation of organic side chains on the OM-LDH surface also contributed to an improvement in the interfacial adhesion, resulting in enhanced tensile strength and elongation at break compared with LDH.

scholarly journals Mechanical and Morphological Properties of Poly-3-hydroxybutyrate/Poly(butyleneadipate-co-terephthalate)/Layered Double Hydroxide Nanocomposites

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Yen Leng Pak ◽  
Mansor Bin Ahmad ◽  
Kamyar Shameli ◽  
Wan Md Zin Wan Yunus ◽  
Nor Azowa Ibrahim ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Morphological Properties ◽  
Basal Spacing ◽  
Casting Method ◽  
Binary Blend ◽  
Elongation At Break ◽  
Ion Exchange Reaction ◽  
Solution Casting Method ◽  
Coprecipitation Technique ◽  
Double Hydroxide

Nanocomposites of poly-3-hydroxybutyrate/poly(butyleneadipate-co-terephthalate)/layered double hydroxide (PHB/PBAT/LDH) were prepared from a binary blend of PHB/PBAT and stearate-Zn3Al LDH via a solution casting method using chloroform as solvent in this study. The pristine Zn3Al LDH was synthesized from nitrate salts solution at pH 7 by using coprecipitation technique and then was modified by stearate anions surfactant via ion exchange reaction. As a result, the basal spacing of the LDH was increased from 8.77 to 24.94 Å after the modification. Intercalated nanocomposites were formed due to the presence of diffraction peak in XRD diffractograms. The infrared spectrum of stearate-Zn3Al LDH exhibited the existence of stearate anions in the synthesized Zn3Al LDH. Mechanical properties with 2 wt% stearate-Zn3Al LDH loading nanocomposites showed 56 wt% improvements in elongation at break compared to those of the blend.

Double glass transitions in exfoliated poly(methyl methacrylate)/organically modified MgAl layered double hydroxide nanocomposites

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 101941-101947 ◽  
Author(s):  
Xiaohai Li ◽  
Lin Chen ◽  
Qiulong Li ◽  
Jinjin Zhang ◽  
Zheng Su ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Layered Double Hydroxide ◽  
Polymer Matrix ◽  
Layered Double Hydroxides ◽  
Interfacial Layer ◽  
Layered Material ◽  
Glass Transitions ◽  
Organically Modified ◽  
Double Hydroxide ◽  
Double Hydroxides

PMMA chains were confined at a layered material (organically modified MgAl layered double hydroxides) surface, which formed the interfacial layer between nanoparticles and the polymer matrix.

Ultrafine nickel nanocatalyst-engineering of an organic layered double hydroxide towards a super-efficient fire-safe epoxy resin via interfacial catalysis

2018 ◽  
Vol 6 (18) ◽  
pp. 8488-8498 ◽  
Author(s):  
Zhi Li ◽  
Junhao Zhang ◽  
François Dufosse ◽  
De-Yi Wang
Keyword(s):  
Heat Release ◽  
Epoxy Resin ◽  
Layered Double Hydroxide ◽  
Heat Release Rate ◽  
Release Rate ◽  
Peak Heat Release Rate ◽  
Organically Modified ◽  
Interfacial Catalysis ◽  
Ultrafine Nickel ◽  
Double Hydroxide

An ultrafine Ni(OH)2 nanocatalyst was surface-assembled on the organically modified layered double hydroxide (LDH-DBS) to prepare nanohybrid LDH-DBS@Ni(OH)2. A mere 3 wt% of LDH-DBS@Ni(OH)2 imparted epoxy resin with UL-94 V-0 rating and a 60.6% reduction of peak heat release rate due to the interfacial catalysis.

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