Layer-by-layer self-assembly of Ce-doped titanate nanotube-based hybrid coating on bamboo fibre materials for flame retardancy and thermostability

2019 ◽  
Vol 168 ◽  
pp. 108950
Author(s):  
Ziling Teng ◽  
Chunlu Ye ◽  
Chenmin Zheng ◽  
Fan Chen ◽  
Yiya Li ◽  
...  
Keyword(s):  
Flame Retardancy ◽  
Self Assembly ◽  
Hybrid Coating ◽  
Layer By Layer ◽  
Titanate Nanotube ◽  
Bamboo Fibre

Fabrication of montmorillonite and titanate nanotube based coatings via layer-by-layer self-assembly method to enhance the thermal stability, flame retardancy and ultraviolet protection of polyethylene terephthalate (PET) fabric

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 53625-53634 ◽  
Author(s):  
Ying Pan ◽  
Wei Wang ◽  
Haifeng Pan ◽  
Jing Zhan ◽  
Yuan Hu
Keyword(s):  
Thermal Stability ◽  
Polyethylene Terephthalate ◽  
Flame Retardancy ◽  
Self Assembly ◽  
Layer By Layer ◽  
Pet Fabric ◽  
Thermal Oxidative Stability ◽  
Titanate Nanotube ◽  
Assembly Method ◽  
Ultraviolet Protection

Montmorillonite and titanate nanotube based coatings have been prepared through LbL self-assembly method, in order to enhance the thermal and thermal-oxidative stability, flame retardancy and UV protection of polyethylene terephthalate fabric.

Formation of H2Ti2O5·H2O nanotube-based hybrid coating on bamboo fibre materials through layer-by-layer self-assembly method for an improved flame retardant performance

Cellulose ◽  
2019 ◽  
Vol 26 (4) ◽  
pp. 2729-2741
Author(s):  
Chenmin Zheng ◽  
Sili Wen ◽  
Ziling Teng ◽  
Chunlu Ye ◽  
Qiaoling Chen ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Self Assembly ◽  
Hybrid Coating ◽  
Layer By Layer ◽  
Assembly Method ◽  
Bamboo Fibre

scholarly journals Flame-Retardant Wood Composites Based on Immobilizing with Chitosan/Sodium Phytate/Nano-TiO2-ZnO Coatings via Layer-by-Layer Self-Assembly

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 296 ◽  
Author(s):  
Lin Zhou ◽  
Yanchun Fu
Keyword(s):  
Flame Retardant ◽  
Flame Retardancy ◽  
Self Assembly ◽  
Composite Coatings ◽  
Wood Products ◽  
Layer By Layer ◽  
Zno Nanoparticle ◽  
Nano Tio2 ◽  
Limiting Oxygen Index ◽  
Sodium Phytate

Composite coatings of inorganic nanomaterials with polyelectrolytes are promising materials for wood modification. Endowing wood with flame retardancy behavior can not only broaden the range of applications of wood, but also improve the safety of wood products. In this work, chitosan/sodium phytate/TiO2-ZnO nanoparticle (CH/SP/nano-TiO2-ZnO) composite coatings were coated on wood surface through layer-by-layer self-assembly. The morphology and chemical composition of the modified wood samples were analyzed using scanning electron microscopy and energy dispersive spectrometry. The thermal degradation properties and flame retardancy of the samples treated with different assembly structures were observed by thermogravimetric analysis, limiting oxygen test, and combustion test. Due to the presence of an effective intumescent flame retardant system and a physical barrier, the CH/SP/nano-TiO2-ZnO coatings exhibited the best flame retardant performance and required only approximately six seconds for self-extinguishing. The coated samples had a limiting oxygen index of 8.4% greater than the original wood.

scholarly journals Evaluating the Flame Retardancy of Shaving Super Bamboo Layer by Layer Self-Assembly With Phytic Acid-Polyethyleneimine

2021 ◽  
Vol 8 ◽  
Author(s):  
Peng Lin ◽  
Yingqiu Jiang ◽  
Xiaolin Ru ◽  
Wenbo Che ◽  
Xiaochun Zhang ◽  
...  
Keyword(s):  
Heat Release ◽  
Phytic Acid ◽  
Heat Release Rate ◽  
Flame Retardancy ◽  
Release Rate ◽  
Self Assembly ◽  
Control Sample ◽  
Control Group ◽  
Infrared Analysis ◽  
Layer By Layer

To improve the flame retardancy of bamboo materials, layer by layer (LbL) self-assembly of phytic acid (PA)-polyethyleneimine (PEI) on the surface of shaving super bamboo specimens with different solution concentrations of PA-PEI and times of LbL self-assembly was completed in this study. Fourier transform infrared analysis results showed that PEI was well assembled to the surface of bamboo specimens by a hydrogen bond with PA as intermediation. The application of PA and PEI significantly promoted the formation of carbon residue, as characterized by simultaneous thermal measurements. Particularly, the peak heat release rate and total heat release rate of bamboo self-assembly with 10 wt% PA and 10 wt% of PEI solution were reduced by 19.36 and 22.3%, respectively. The treated bamboo specimen showed increases of 35.56 and 480.70% in fire performance index and residual mass, respectively, compared to the control sample. Besides, yields of CO and CO2 were decreased by 17.77 and 17.07% in comparison with the control group, respectively. The LbL self-assembly with PA-PEI can effectively improve the flame retardancy of bamboo materials by promoting the formation of a residual char layer.

scholarly journals Construction of Chitosan/Alginate Nano-Drug Delivery System for Improving Dextran Sodium Sulfate-Induced Colitis in Mice

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1884
Author(s):  
Mengfei Jin ◽  
Shangyong Li ◽  
Yanhong Wu ◽  
Dandan Li ◽  
Yantao Han
Keyword(s):  
Self Assembly ◽  
Average Diameter ◽  
Mucosal Healing ◽  
Plga Nanoparticles ◽  
Narrow Particle Size Distribution ◽  
Layer By Layer ◽  
Systemic Side Effects ◽  
Assembly Technology ◽  
The Fourier Transform ◽  
Polyelectrolyte Film

(1) Background: In the treatment of ulcerative colitis (UC), accurate delivery and release of anti-inflammatory drugs to the site of inflammation can reduce systemic side effects. (2) Methods: We took advantage of this goal to prepare resveratrol-loaded PLGA nanoparticles (RES-PCAC-NPs) by emulsification solvent volatilization. After layer-by-layer self-assembly technology, we deposited chitosan and alginate to form a three-layer polyelectrolyte film. (3) Results: It can transport nanoparticles through the gastric environment to target inflammation sites and slowly release drugs at a specific pH. The resulting RES-PCAC-NPs have an ideal average diameter (~255 nm), a narrow particle size distribution and a positively charged surface charge (~13.5 mV). The Fourier transform infrared spectroscopy showed that resveratrol was successfully encapsulated into PCAC nanoparticles, and the encapsulation efficiency reached 87.26%. In addition, fluorescence imaging showed that RES-PCAC-NPs with positive charges on the surface can effectively target and accumulate in the inflammation site while continuing to penetrate downward to promote mucosal healing. Importantly, oral RES-PCAC-NPs treatment in DSS-induced mice was superior to other results in significantly improved inflammatory markers of UC. (4) Conclusions: Our results strongly prove that RES-PCAC-NPs can target the inflamed colon for maximum efficacy, and this oral pharmaceutical formulation can represent a promising formulation in the treatment of UC.

Graphene-Based Multilayers Constructed from Layer-by-Layer Self-Assembly Techniques

2014 ◽  
Vol 14 (2) ◽  
pp. 1145-1153 ◽  
Author(s):  
Bing Yu ◽  
Xiaomian Liu ◽  
Hailin Cong ◽  
Hua Yuan ◽  
Dong Wang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Layer By Layer
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