The influence of the method of butadiene rubbers cross-linking on their thermal properties

Janowska, G.; Kucharska, Agnieszka

doi:10.1007/s10973-008-9395-2

Cited by 5 publications

(4 citation statements)

References 12 publications

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“…In the scientific literature, one can find only few reports concerning the thermal properties of elastomers nonconventional cross-linked by means of one of the oldest antiseptics: iodoform [21][22][23]. The mechanism of cross-linking with this compound can be both ionic and radical, and as in the case of DCP, it leads to the formation of C-C network nodes, which is accompanied by the cis-trans isomerization and modification of rubber macromolecules with iodoform or the products of its decomposition, as confirmed by the similar values of the destruction activation energy of NI and SI vulcanizates under air and nitrogen (Table 2).…”

Section: Resultsmentioning

confidence: 99%

Effect of the spatial network structure and cross-link density of diene rubbers on their thermal stability and fire hazard

Rybiński

Janowska

2014

J Therm Anal Calorim

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The paper presents the results of investigating the effect of the density and spatial network structure of diene rubbers (NBR and SBR) on their thermal properties and fire hazard. The rubbers were either conventionally cross-linked by means of sulfur and organic peroxide or nonconventionally with the use of iodoform (CH 3 I). Based on thermo-kinetic analysis, the destruction activation energy of the elastomers investigated and their vulcanizates was determined under air and inert gas. The analysis of particular stages of their thermal decomposition was also presented. During the combustion of the elastomeric materials obtained, it has been found that their fire hazard depends not only on the elastomer chemical structure but also on the method of its cross-linking.

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Section: Resultsmentioning

confidence: 99%

Effect of the spatial network structure and cross-link density of diene rubbers on their thermal stability and fire hazard

Rybiński

Janowska

2014

J Therm Anal Calorim

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“…The results of thermal analysis under neutral gas show that butadiene rubber passes from elastic to glassy state at T g = -113°C [19], while its transition from glassy into elastic state occurs at T g = -106°C (Fig. 2).…”

Section: Thermal Properties Of Rubbers and Their Vulcanizatesmentioning

confidence: 97%

“…The iodoform-cross linked butadi ene rubber (BI) does not undergo crystallization, which results from the mentioned above cis-trans isomerization processes, whose contribution during the vulcanization of diene rubbers in the presence of iodoform is considerable [19].…”

Section: Thermal Properties Of Rubbers and Their Vulcanizatesmentioning

confidence: 99%

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Thermal properties of diene elastomers

2014

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Abstract-The paper presents the results of investigating the effect of the macromolecule chemical structure and the spatial network structure of butadiene (BR), butadiene styrene (SBR) and butadiene acrylonitrile (NBR) rubbers on their thermal properties. The rubbers were cross linked by the conventional method by means of dicumyl peroxide or sulfur as well as by the non conventional way using iodoform (CH 3 I). The rub ber and their vulcanizates were assessed by the derivatographic method (under air) and by means of differen tial scanning calorimetry (DSC) under inert gas. The thermal cross linking degree of the polydienes and the efficiency of the cross linking processes, dependent on both the chemical structure of elastomer macromol ecules and their spatial network structure were determined. The cross linking of elastomers with iodoform changes the thermal properties of polymers, significantly increasing their glass transition temperature during both sample heating and cooling, which results from the increase in mutual interaction of macromolecules connected with their modification with iodine compounds.

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