Thermal and mechanical properties of bio-based plasticizers mixtures on poly (vinyl chloride)

Bouchoul, Boussaha; Benaniba, Mohamed Tahar; Massardier, V.

doi:10.1590/0104-1428.14216

Cited by 22 publications

(25 citation statements)

References 31 publications

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“…Low volatility and different degrees of miscibility with polymers makes the plasticizers more flexible and durable products. The chemical structure of plasticizers is very diverse that belong to various classes of organic compounds including fluorinated substances, hydrocarbons, esters, ketones, alcohols, amines, fats, oligomers and others [5].…”

Section: Introductionmentioning

confidence: 99%

Induction of ovarian toxicity in the freshwater fish, Pseudetroplus maculatus (Bloch, 1795) after sublethal exposure of dibutyl phthalate

Sajla¹,

Raibeemol²,

Chitra³

2019

IJSRBS

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Dibutyl phthalate, a plasticizer, is widely used as a softener in several commercial industrial products. The study investigated the sublethal effects of dibutyl phthalate on ovary of the freshwater fish, Pseudetroplus maculatus. Dibutyl phthalate exposed at 0.2 mg/ L concentration for 24, 72 and 96 h showed behavioural modifications in the fish. The body weight showed significant reduction after 72 h of toxicant exposure with concomitant increase in mucous deposition, which indicated whole-organism response against the toxicant. The weight of ovary and gonadosomatic index decreased significantly in all treatment groups thereby suggested the stress exhibited on female reproductive organ. Dibutyl phthalate prevented normal activities of steroidogenic enzymes as 3β-and 17β-hydroxysteroid dehydrogenase in ovary of the fish. The alterations in the level of vitellogenin measured through indirect endpoints such as alkali-labile phosphoprotein and total protein in ovary and blood plasma indicated the estrogenic effects of the toxicant. Dibutyl phthalate disrupted hypothalamo-pituitary-gonadal axis as demonstrated by the increase in the levels of luteinizing hormone and testosterone with reduction in serum estradiol without remarkable changes in the level of follicle stimulating hormone. In the ovary, number of vitellogenic oocyte increased whereas the population of pre-vitellogenic oocyte declined without any changes in the number of post-vitellogenic oocyte. Histological evaluation revealed severe morphological damages associated to apoptosis such as empty follicle and atretic oocytes, membrane blebbing, nuclear condensation, vacuolization and broken theca granulosa membrane. The present findings suggested that sublethal exposure of DBP induced ovarian toxicity in the freshwater fish, Pseudetroplus maculatus.

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Section: Introductionmentioning

confidence: 99%

Induction of ovarian toxicity in the freshwater fish, Pseudetroplus maculatus (Bloch, 1795) after sublethal exposure of dibutyl phthalate

Sajla¹,

Raibeemol²,

Chitra³

2019

IJSRBS

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“…The second thermal degradation stages have little difference, their temperature range was 410°C-570°C, corresponding to the C=C bond crosslinking. 21,22 Compared with blank PVC and PVC/B-SnO 2 , the AV P2 and ML 2 of the PVC/S-SnO 2 decreased by 5.6%, 5.6% and 7.5%, 0.58%, separately, where others barely changed. The thermal conductivity of PVC/S-SnO 2 was minimum; its value was 1.6% and 3.1% lower than that of blank PVC and PVC/ B-SnO 2 , respectively.…”

Section: Thermal Properties Of Pvc/sno 2 Compositesmentioning

confidence: 99%

Synthesis of hollow tin dioxide and its improvement of flame retardancy and toughness on poly(vinyl chloride)

Jiao

et al. 2018

Journal of Fire Sciences

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Hollow tin dioxide (S-SnO 2) and solid SnO 2 (B-SnO 2) were prepared by a hydrothermalcalcination method with and without carbon spheres as templates, respectively. The flame retardancy, mechanical and thermal degradation properties, and char residues of the poly(vinyl chloride) samples treated with S-SnO 2 and B-SnO 2 were contrastively investigated by a limiting oxygen index instrument, cone calorimeter (Cone), tensile properties tests, and thermogravimetric analyzer. When the loading level of SnO 2 was 2 phr, the limiting oxygen index of the poly(vinyl chloride) sample treated with S-SnO 2 (poly(vinyl chloride)/S-SnO 2) increased by 5.3% and 2%, and its elongation is 27.3% and 29.9% higher than that of the blank poly(vinyl chloride) and the poly(vinyl chloride) sample treated with B-SnO 2 (poly(vinyl chloride)/B-SnO 2), respectively. Compared with the blank poly(vinyl chloride) and the poly(vinyl chloride)/B-SnO 2 , the total heat release of poly(vinyl chloride)/S-SnO 2 decreased by 24.5% and 9.4%, and the peak of smoke production rate decreased by 56.7% and 11.7%, respectively.

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“…Thus, for PVC, they have the additional characteristic of acting as a stabilizer. Recent studies have shown that epoxidized sunflower oil is also a good plasticizer and stabilizer for PVC, pure or combined with other plasticizers [7] . An additional advantage for the use of epoxidized oils as additives in polymers is that, they can act as stabilizers where the mechanism of degradation comprises evolution of acid substances, like HCl, the main by-product of the PVC degradation.…”

Section: Plasticizersmentioning

confidence: 99%

Bio-based additives for thermoplastics

Paoli

Waldman

2019

Polímeros

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RbstractPresently, there are significant research efforts being undertaken to produce bio-based chemicals in a cost-effective way. The polymer chemists and engineers are no exception to this. Additives for polymers correspond to a large section of the plastics market and bio-based products can substitute many of them. The scientific literature has a large number of publications focusing on the preparation and testing of bio-based polymer additives; however, the small number of products that reach the market, which are bio-based, does not reflect this. In terms of the global market, the environmentally friendly appeal of bio-based additives alone is not sufficient; the bio-based product must have similar or better performance than the oil-based and be comparable or lower in cost than the existing products. In this review, we focus on bio-based polymer additives that have already reached the market or have a real possibility of reaching the market in a cost-effective way.

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Thermal and mechanical properties of bio-based plasticizers mixtures on poly (vinyl chloride)

Cited by 22 publications

References 31 publications

Induction of ovarian toxicity in the freshwater fish, Pseudetroplus maculatus (Bloch, 1795) after sublethal exposure of dibutyl phthalate

Induction of ovarian toxicity in the freshwater fish, Pseudetroplus maculatus (Bloch, 1795) after sublethal exposure of dibutyl phthalate

Synthesis of hollow tin dioxide and its improvement of flame retardancy and toughness on poly(vinyl chloride)

Bio-based additives for thermoplastics

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