scholarly journals Renewable vanillin based flame retardant for poly(lactic acid): a way to enhance flame retardancy and toughness simultaneously

RSC Advances ◽  
2018 ◽  
Vol 8 (73) ◽  
pp. 42189-42199 ◽  
Author(s):  
Pengcheng Zhao ◽  
Zhiqi Liu ◽  
Xueyi Wang ◽  
Ye-Tang Pan ◽  
Ines Kuehnert ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Poly Lactic Acid ◽  
Fire Performance

A bio-based PLA composite with excellent fire performance, improved toughness and good processability.

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.

scholarly journals Flame Retardancy and Toughness of Poly(Lactic Acid)/GNR/SiAHP Composites

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1129 ◽  
Author(s):  
Ningjing Wu ◽  
Jihang Yu ◽  
Wenchao Lang ◽  
Xiaobing Ma ◽  
Yue Yang
Keyword(s):  
Lactic Acid ◽  
Heat Release ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
High Performance ◽  
Poly Lactic Acid ◽  
Limiting Oxygen Index ◽  
Cone Calorimeter Test ◽  
Interfacial Compatibility ◽  
Aluminum Hypophosphite

A novel flame-retardant and toughened bio-based poly(lactic acid) (PLA)/glycidyl methacrylate-grafted natural rubber (GNR) composite was fabricated by sequentially dynamical vulcanizing and reactive melt-blending. The surface modification of aluminum hypophosphite (AHP) enhanced the interfacial compatibility between the modified aluminum hypophosphite by silane (SiAHP) and PLA/GNR matrix and the charring ability of the PLA/GNR/SiAHP composites to a certain extent, and the toughness and flame retardancy of the PLA/GNR/SiAHP composites were slightly higher than those of PLA/GNR/AHP composites, respectively. The notched impact strength and elongation of the PLA composite with 20 wt. %GNR and 18 wt.% SiAHP were 13.1 kJ/m2 and 72%, approximately 385% and 17 fold higher than those of PLA, respectively, and its limiting oxygen index increased to 26.5% and a UL-94 V-0 rating was achieved. Notedly, the very serious melt-dripping characteristics of PLA during combustion was completely suppressed. The peak heat release rate and total heat release values of the PLA/GNR/SiAHP composites dramatically reduced, and the char yield obviously increased with an increasing SiAHP content in the cone calorimeter test. The good flame retardancy of the PLA/GNR/SiAHP composites was suggested to be the result of a synergistic effect involving gaseous and condensed phase flame-retardant mechanisms. The high-performance flame-retardant PLA/GNR/SiAHP composites have great potential application as replacements for petroleum-based polymers in the automotive interior and building fields.

Flame Retardancy and Thermal Degradation of Intumescent Flame Retardant Poly(lactic acid)/Starch Biocomposites

2011 ◽  
Vol 50 (2) ◽  
pp. 713-720 ◽  
Author(s):  
Xin Wang ◽  
Yuan Hu ◽  
Lei Song ◽  
Shanyong Xuan ◽  
Weiyi Xing ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermal Degradation ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Intumescent Flame Retardant ◽  
Poly Lactic Acid

Improvement of flame retardancy of poly(lactic acid) nonwoven fabric with a phosphorus- containing flame retardant

2016 ◽  
Vol 46 (3) ◽  
pp. 914-928 ◽  
Author(s):  
Xian-Wei Cheng ◽  
Jin-Ping Guan ◽  
Ren-Cheng Tang ◽  
Kai-Qiang Liu
Keyword(s):  
Lactic Acid ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Nonwoven Fabric ◽  
Poly Lactic Acid ◽  
Phosphorus Containing

Improving the flame retardancy and mechanical properties of poly(lactic acid) with a novel nanorod-shaped hybrid flame retardant

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14852-14858 ◽  
Author(s):  
Yu Cao ◽  
Yaqing Ju ◽  
Fenghui Liao ◽  
Xiaoxun Jin ◽  
Xiu Dai ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Lactic Acid ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Aluminium Hydroxide ◽  
Poly Lactic Acid

A novel nanorod-shaped hybrid flame retardant (NRH-FR) was synthesized by the reaction of benzenephosphinic acid with powdery aluminium hydroxide and the PLA/NRH-FR nanocomposites with good flame retardancy and mechanical property were prepared.

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