Intercalation of phosphotungstic acid into layered double hydroxides by reconstruction method and its application in intumescent flame retardant poly (lactic acid) composites

2018 ◽  
Vol 147 ◽  
pp. 142-150 ◽  
Author(s):  
Sheng Zhang ◽  
Yongxin Yan ◽  
Wenjia Wang ◽  
Xiaoyu Gu ◽  
Hongfei Li ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Flame Retardant ◽  
Layered Double Hydroxides ◽  
Phosphotungstic Acid ◽  
Intumescent Flame Retardant ◽  
Poly Lactic Acid ◽  
Reconstruction Method ◽  
Double Hydroxides

scholarly journals Synthesis and characterization of MgAl-DBS LDH/PLA composite by sonication-assisted masterbatch (SAM) melt mixing method

RSC Advances ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 658-667 ◽  
Author(s):  
Roger Quispe-Dominguez ◽  
Sajid Naseem ◽  
Andreas Leuteritz ◽  
Ines Kuehnert
Keyword(s):  
Lactic Acid ◽  
Layered Double Hydroxides ◽  
Research Work ◽  
Synthesis And Characterization ◽  
Poly Lactic Acid ◽  
Melt Mixing ◽  
Dodecylbenzene Sulfonate ◽  
Mixing Method ◽  
Double Hydroxides

This research work is based on the comparison of the mixing phenomena of magnesium–aluminum (MgAl) layered double hydroxides (LDHs) intercalated by dodecylbenzene sulfonate (MgAl-DBS) in poly(lactic acid) (PLA).

Preparation of lignin–silica hybrids and its application in intumescent flame-retardant poly(lactic acid) system

2012 ◽  
Vol 24 (8) ◽  
pp. 738-746 ◽  
Author(s):  
Rui Zhang ◽  
Xifu Xiao ◽  
Qilong Tai ◽  
Hua Huang ◽  
Jian Yang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Photoelectron Spectroscopy ◽  
Intumescent Flame Retardant ◽  
Poly Lactic Acid ◽  
Limiting Oxygen Index ◽  
Silica Hybrids ◽  
Thermal Stability Of

Lignin–silica hybrids (LSHs) were prepared by sol–gel method and characterized by Fourier transform infrared (FT-IR) spectra, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). LSH and ammonium polyphosphate (APP) were added into poly(lactic acid) (PLA) as a novel intumescent flame-retardant (IFR) system to improve the flame retardancy of PLA. The flame-retardant effect of APP and LSH in PLA was studied using limiting oxygen index (LOI), vertical burning (UL-94) tests and cone calorimeter. The thermal stability of PLA/APP/LSH composites was evaluated by thermogravimetric analysis (TGA). Additionally, the morphology and components of char residues of the IFR-PLA composites were investigated by SEM and XPS. With the addition of APP/LSH to PLA system, the morphology of the char residue has obviously changed. Compared with PLA/APP and PLA/APP/lignin, a continuous and dense intumescent charring layer with more phosphor in PLA composites is formed, which exhibits better flame retardancy. All the results show that the combination of APP and LSH can improve the flame-retardant property and increase the thermal stability of PLA composites greatly.

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