Comprehensive study on flame retardant polyesters from phosphorus additives

Salmeia, Khalifah A.; Gooneie, Ali; Simonetti, Pietro; Nazir, Rashid; Kaiser, Jean‐Pierre; Rippl, Alexandra; Hirsch, Cordula; Lehner, Sandro; Rupper, Patrick; Hufenus, Rudolf; Gaan, Sabyasachi

doi:10.1016/j.polymdegradstab.2018.07.006

Cited by 76 publications

(50 citation statements)

References 63 publications

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“…The design of new functional materials often requires a precise control of the structure at different scales . In polymer blends, this task is quite challenging due to the complex relationships between their properties, microstructures, and processing conditions.…”

Section: Introductionmentioning

confidence: 99%

Tuning gradient microstructures in immiscible polymer blends by viscosity ratio

Dan

Hufenus

Qin

et al. 2019

J of Applied Polymer Sci

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Bioinspired gradient microstructures provide an attractive template for functional materials with tailored properties. In this study, filaments with gradient microstructures are developed by melt‐spinning of immiscible polymer blends. The distribution of the gradient morphology is shown to be controlled by the viscosity ratio of polymers as well as the geometry of the capillary die. Distinct microstructure gradients with long thin fibrils near the surface region and short large droplets near the center region of the filament, as well as the inverse pattern, are formed in systems with different viscosity ratios. The shear flow field in the capillary can elucidate the formation mechanisms of gradient morphologies during processing. The results demonstrate how the features of a gradient microstructure can be tailored by the design of capillary geometry and processing conditions. The viscosity ratio is then introduced as an adjusting tool to control the gradient morphology in a given processing setup. In consequence, this study provides novel design routes for achieving gradient morphologies in immiscible polymers. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48165.

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Section: Introductionmentioning

confidence: 99%

Tuning gradient microstructures in immiscible polymer blends by viscosity ratio

Dan

Hufenus

Qin

et al. 2019

J of Applied Polymer Sci

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“…Organophosphorus additives based on 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) were reported as suitable FR for reducing the flammability of epoxy resins [92][93][94][95] and polyurethane foams [96]. DOPObased FRs are used successfully to improve fire behaviour of polyamide [97] and polyester [98,99]. Compared to conventional FRs, a lower amount of DOPO derivatives is required to obtain good performance in polymer flame retardancy [100].…”

Section: Organic-based Flame Retardantsmentioning

confidence: 99%

Halogen-free flame retardants for application in thermoplastics based on condensation polymers

et al. 2019

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Future materials in the field of thermoplastics require a lower impact on the environment. Actual thermoplastic materials also require "greener" additives for thermal and fire resistance profile. In this work, some of the recent solutions for halogen-free flame retardants were discussed in the context of viable routes with economical and industrial relevance. The fire retardant mechanism was discussed in order to imagine new solutions for future additives. Some of the main (inorganic, organic or hybrid) flame retardants can be used as common platform for the next classes of thermoplastic composites (synthetic, natural, or bio-based). The new generation of flame retardants (based on the emerging solutions) will have to surpass two major barriers: the cost effectiveness and the need for high concentration (which usually affects other properties).

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“…However, the disadvantages of IFR systems are restricted as a result of their poor FR efficiency comparing to halogen containing FRs, their poor compatibility with matrix system and lower thermal stability. To overcome these problems, researchers aim to develop oligomeric or polymeric IFRs with relatively higher molecular weight and synergistic agent to enhance flame retardancy of IFR …”

Section: Introductionmentioning

confidence: 99%

Flame resistant properties of LDPE/PLA blends containing halogen‐free flame retardant

Arslan

Dilsiz

2020

J of Applied Polymer Sci

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In this study, mixing petroleum-based low-density polyethylene (LDPE) with biodegradable poly(lactic acid) (PLA) is used as polymer matrix. Boron compounds, metal hydroxides, melamine (MLM), ammonium polyphosphate (APP), and pentaerythritol (PER) were used as reinforcement materials to improve flame resistance of polymer matrix. The composite materials were characterized by Fourier transform infrared spectroscopy, limiting oxygen index (LOI), thermogravimetric analysis, mechanical test, and scanning electron microscopy analyses. The LOI analysis showed that for samples, which included MLM, APP, and PER, the LOI values were dramatically improved. Especially, the LOI value of sample Q (LDPE80/PLA20/APP30/PER15/MLM15/ZB3) was enhanced about 95.17% compared to polymer mixing.

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Comprehensive study on flame retardant polyesters from phosphorus additives

Cited by 76 publications

References 63 publications

Tuning gradient microstructures in immiscible polymer blends by viscosity ratio

Tuning gradient microstructures in immiscible polymer blends by viscosity ratio

Halogen-free flame retardants for application in thermoplastics based on condensation polymers

Flame resistant properties of LDPE/PLA blends containing halogen‐free flame retardant

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