The thermooxidative degradation of poly(vinyl chloride). Part I. The stabilising action of dibutyltin maleate and trisnitro (1,3-dihydroxyl-2-hydroxymethyl-2-nitropropane) on PVC in air

Peters, Olufemi A.; Turoti, M; Adeniyi, J.B.

doi:10.1016/0141-3910(95)00132-8

Cited by 8 publications

(5 citation statements)

References 6 publications

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“…Scheme 1 shows the reactions leading to the formation of two types of gel. The greater increase in gel that occurred in the stabilized samples was an indication of thermal homolysis of the tin-oxygen bond in the tin ester in line with previous work [10,8,7,5]. The heat also led to formation of the macroalk radicals.…”

Section: Figure 1 Effect Of Concentration Of Dbtdet On Softening Poisupporting

confidence: 87%

“…Both the polyester and alkyd coatings were subjected to thermal aging separately at 60 o C and 100 o C respectively in a Wallace air-circulating oven as described previously [7]. These two temperatures were determined as follows: The glass plates containing the coatings were hung vertically in the oven using ironclips.…”

Section: Oven Ageing Of Coatingsmentioning

confidence: 99%

“…Organotin compounds have long been recognized as processing and/or service stabilizers for some polymers particularly PVC [2,7,15,9,16]. However, their roles as stabilizers for surface coatings have recently been receiving attention [1,8].…”

Section: Introductionmentioning

confidence: 99%

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Thermoxidative stabilization of poly(ethylene terephthalate) and alkyd Using dibutyltin diethanoate

Turoti¹,

Casmir²,

Odike³

et al. 2014

IOSRJAC

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The thermo-oxidative degradation of unstabilized and stabilized coatings of each of a saturated polyester and a poly (pentaerythritol-phthalate)based alkyd coatings separately pigmented with syncomine yellow 1630 have been studied. The test stabilizer was dibutyltin diethanoate employed at varying concentrations. The degradation of the coatings was monitored using color development, determination of gel content, stress-strain relationships, gloss retention and optical microscopy. The results showed that incorporating a concentration of 5 or 10 x 10-4 mole % of the tin ester can effectively stabilize both the polyester and alkyd coatings against thermo oxidative degradation.

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Section: Figure 1 Effect Of Concentration Of Dbtdet On Softening Poisupporting

confidence: 87%

Section: Oven Ageing Of Coatingsmentioning

confidence: 99%

See 1 more Smart Citation

Thermoxidative stabilization of poly(ethylene terephthalate) and alkyd Using dibutyltin diethanoate

Turoti¹,

Casmir²,

Odike³

et al. 2014

IOSRJAC

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“…Dioctyl phthalate (DOP) (Merck) (refractive index 1.4399 and density 0.993 g/cm 3 ) was used as the plasticizer. ERSO was prepared in our laboratory.…”

Section: Methodsmentioning

confidence: 99%

“…Many of the studies on the thermal degradation and stabilization of PVC have been carried out on PVC powder or granules in an inert medium [2][3][4][5], even though PVC is more often used in the plasticized form (plastisol/plastigel) with the plasticizer component of the formulation exceeding 50% [6]. The PVC plastisols are suspensions of PVC resin in a plasticizer in the presence of other additives.…”

Section: Introductionmentioning

confidence: 99%

Formulation and properties' evaluation of PVC/(dioctyl phthalate)/(epoxidized rubber seed oil) plastigels

Balköse¹,

Egbuchunam²,

Okieimen³

2008

Vinyl Additive Technology

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Epoxidized rubber seed oil (4.5% oxirane content, ERSO) was prepared by treating the oil with peracetic acid generated in situ by reacting glacial acetic acid with hydrogen peroxide. The thermal behavior of the ERSO was determined by differential scanning calorimetry. The effect of the epoxidized oil on the thermal stability of poly (vinyl chloride) (PVC) plastigels, formulated to contain dioctyl phthalate (DOP) plasticizer and various amounts of the epoxidized oil, was evaluated by using discoloration indices of the polymer samples degraded at 1608C for 30 min and thermogravimetry at a constant heating rate of 108C/min up to 6008C. The thermal behavior of the ERSO was characterized by endothermic peaks at about 1508C, which were attributed to the formation of network structures via epoxide groups, and at temperatures above 3008C, which were due to the decomposition of the material. Up to 50% of the DOP plasticizer in the PVC plastisol formulation could be substituted by ERSO without a marked deleterious effect on the consistency of the plastigel formed. In the presence of the epoxidized oil, PVC plastigel samples showed a marked reduction in discoloration and the number of conjugated double bonds, as well as high temperatures for the attainment of specific extents of degradation. These results showed that the ERSO retarded/inhibited thermal dehydrochlorination and the formation of long (n > 6) polyene sequences in PVC plastigels. The plasticizer efficiency/permanence of ERSO in PVC/DOP plastigels was evaluated from mechanical properties' measurements, leaching/migration tests, and water vapor permeability studies. The results showed that a large proportion of DOP could be substituted by ERSO in a PVC plastisol formulation without deleterious effects on the properties of the plastigels.

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Overview of the recent literature on flame retardancy and smoke suppression in PVC

Levchik¹,

Weil²

2005

Polym. Adv. Technol.

154

123

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This paper presents an overview of the recent literature on flame retardancy of poly(vinyl chloride) (PVC). A short overview of mechanisms of thermal decomposition of PVC, especially those which lead to char formation, is also presented because this gives insight into the mechanisms of flame retardant action. New developments in the area are mostly focused on combinations of various flame retardants and smoke suppressants in the search for synergistic effects. Because different additives show different mechanisms of action, synergistic combinations are very probable. New developments in phosphate ester plasticizers are reported in the literature. Copyright © 2005 John Wiley & Sons, Ltd.

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The thermooxidative degradation of poly(vinyl chloride). Part I. The stabilising action of dibutyltin maleate and trisnitro (1,3-dihydroxyl-2-hydroxymethyl-2-nitropropane) on PVC in air

Cited by 8 publications

References 6 publications

Thermoxidative stabilization of poly(ethylene terephthalate) and alkyd Using dibutyltin diethanoate

Thermoxidative stabilization of poly(ethylene terephthalate) and alkyd Using dibutyltin diethanoate

Formulation and properties' evaluation of PVC/(dioctyl phthalate)/(epoxidized rubber seed oil) plastigels

Overview of the recent literature on flame retardancy and smoke suppression in PVC

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