Thermal properties of charring plasticizers from the biobased alcohols, pentaerythritol and 3,5-dihydroxybenzoic acid

Howell, Bob A.; Alrubayyi, Aeshah; Ostrander, Eric A.

doi:10.1007/s10973-019-08311-8

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…These materials readily migrate from the polymer matrix. This gives rise to two problems, negative health effects and flammability [7][8][9]. Phthalate plasticizers are widely distributed in the environment and human populations around the world have been exposed to these compounds, particularly DEHP.…”

Section: It Was Not Until the Discovery By Waldo Semon At The Bf Good...mentioning

confidence: 99%

Biobased Glycerol Hyperbranched Poly(Ester)s of Precise Structure as Plasticizers for Poly (Vinyl Chloride)

Howell

2021

MCMS

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Hyperbranched poly(ester)s from the renewable, abundantly-available, biomonomers, glycerol and adipic acid, may be prepared under conditions that permit control of molecular weight, avoid gelation, and ensure the presence of hydroxyl endgroups. Capping the endgroups as esters provides materials that are thermally stable, fluid at room temperature, fully compatible with a PVC matrix and provide effective plasticization of PVC at low levels of incorporation. Because of low toxicity and migratory potential, these materials represent attractive alternatives to traditional toxic plasticizers for PVC.

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Section: It Was Not Until the Discovery By Waldo Semon At The Bf Good...mentioning

confidence: 99%

Biobased Glycerol Hyperbranched Poly(Ester)s of Precise Structure as Plasticizers for Poly (Vinyl Chloride)

Howell

2021

MCMS

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“…[11][12][13][14] These may often be obtained from byproducts of the agriculture or food industry. [15][16][17][18] Most have been derived from small molecules. However, hyperbranched oligomers offer several features which make them particularly well-suited to function as plasticizers.…”

Section: Introductionmentioning

confidence: 99%

Efficient biobased oligomeric plasticizers from the renewable biomonomers, glycerol and adipic acid

Howell

2023

Polymers from Renewable Resources

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With the recognition that traditional phthalate plasticizers readily migrate from a polymer matrix into which they have been incorporated, have become widespread environmental pollutants and pose risks to human health, the development of new, effective, nontoxic, nonmigrating plasticizers has gained urgency. A focus has been the generation of plasticizers from renewable, inexpensive, nontoxic biobased precursors. Many small molecule plasticizers have been prepared from readily-available bioprecursors. However, the most promising are branched oligomeric materials. Fully compatible oligomeric plasticizers do not migrate from a polymer matrix. Highly branched materials are effective in increasing free volume and display good plasticizing impact. Using new technology that permits the generation of hyperbranched poly(ester) without gelation and with control of molecular weight and endgroup identity, oligomeric materials have been prepared from the nontoxic biomonomers, glycerol and adipic acid. The monomers are readily available at modest cost. The oligomers may be obtained in a simple one-step process and function as very effective plasticizers for polymeric materials.

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“…Xu et al [20] incorporated ammonium polyphosphate (APP) and a bio-based flame retardant prepared from vanillin into epoxy resin, significant reduction in heat release rate associated with UL-94 V-0 rating can be observed. Many researches showed that, a supersize portion of bio-based additives into polymer matrix present efficient flame retardancy together with synthetic materials made from fossil sources, i.e., pentaerythritol [21,22] and ammonium polyphosphate [20,23,24], but such methods usually involved complicated synthesis route and preparation process.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of a Novel Bio-Based P-N Containing Flame Retardant for Effectively Reducing the Fire Hazards of Epoxy Resin

Li¹,

Hu²,

Yang³

et al. 2022

Journal of Renewable Materials

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In this work, a bio-based flame retardant (Cy-HEDP) was synthesized from cytosine and HEDP through a facile salt-forming reaction and embedded into epoxy matrix to improve the flame retardancy and smoke suppression performance. The product Cy-HEDP was well characterized by FTIR, 1 H and 31 P NMR and SEM tests. On the basis of the results, by adding 15 wt% Cy-HEDP, the EP 15 can pass UL-94 V-0 rating, and the total smoke production (TSP) as well as total heat release (THR) can be decreased by 61.05% (from 22.61 to 8.7 m 2 /m 2 ) and 39.44% (from 103.19 to 62.50 MJ/m 2 ) in comparison to the unfilled EP, reflecting the attenuated smoke toxicity and impeded heat generation. According to the analysis results of residual char, it can be concluded that Cy-HEDP possessed the ability to promote the formation of continuous and dense char layers, which would be a physical barrier to insulate oxygen and prevent heat feedback during the combustion of EP. This work provide inspiration towards developing bio-based flame retardant, probably extending the prospects to other polymeric material system.

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Thermal properties of charring plasticizers from the biobased alcohols, pentaerythritol and 3,5-dihydroxybenzoic acid

Cited by 5 publications

References 33 publications

Biobased Glycerol Hyperbranched Poly(Ester)s of Precise Structure as Plasticizers for Poly (Vinyl Chloride)

Biobased Glycerol Hyperbranched Poly(Ester)s of Precise Structure as Plasticizers for Poly (Vinyl Chloride)

Efficient biobased oligomeric plasticizers from the renewable biomonomers, glycerol and adipic acid

Facile Synthesis of a Novel Bio-Based P-N Containing Flame Retardant for Effectively Reducing the Fire Hazards of Epoxy Resin

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