Effect of organotin stabiliser on the thermal stabilisation of PVC: Part I—The influence of dibutyltin dilaurate on polyene sequences

Xu, Riwei; Zhou, Dafei; Zhao, Dan

doi:10.1016/0141-3910(90)90109-k

Cited by 17 publications

(9 citation statements)

References 5 publications

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“…Garrigues et al [3] have investigated thermal dehydrochlorination of dialkyltin carboxylates in PVC solution. Rujian et al [4] showed that the higher the dibutyltin dilaureate content, the greater the concentration of shorter polyene sequences. We have previously studied PVC with Farstab Sn 500K (a liquid organotin stabilizer with 8% tin from Farstab stabilizer company, Turkey) [5].…”

Section: Introductionmentioning

confidence: 99%

Thermal stabilisation of poly(vinyl chloride) by organotin compounds

Arkış

Balköse

2005

Polymer Degradation and Stability

143

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The effect of LSN 117 (dioctyl tin bis isooctyl thioglycollate, an organotin compound) on the heat stability of plasticised PVC was investigated in this study. The organotin stabiliser had carbonyl and carboxylate groups and PVC contained traces of Fe, Zn, Ca, Cu and Sn. The heat stability of the films were tested at 140 C and 160 C or 180 C by heating in an air circulation oven up to 2 h and by measuring HCl evolved using a Metrohm 763 PVC thermomat and by thermogravimetric analysis. The onset of HCl evolution was at 14.3 and 2.5 h at 140 C and 160 C, respectively, for PVC film without LSN117. On the other hand, the film with LSN117 did not evolve HCl in 30.3 h at 140 C. HCl started to evolve from the films with LSN 117 in 14.3 h at 160 C. The TGA curve also indicated PVC film with LSN 117 degraded at higher temperatures than control films. LSN 117 was found to be a good heat stabiliser for plasticised PVC and it did not have any detrimental effect on mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Thermal stabilisation of poly(vinyl chloride) by organotin compounds

Arkış

Balköse

2005

Polymer Degradation and Stability

143

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“…Actually, shorter polyene sequences, 8 which did not discolor PVC, were formed as indicated by UV spectroscopy.…”

Section: Discussionmentioning

confidence: 99%

“…The present study also confirmed the formation of short polyene sequences with organotin stabilizers, as reported by previous workers. 8 It was observed that the sample with 2.5% Sn500K was less degraded than the sample with 5% Sn500K. The level of Sn500K in the films should be kept low to have transparent films.…”

Section: Tgamentioning

confidence: 99%

“…Their attempts to trace intermediate monochlorotin derivatives in the case of maleates by polarography and Mössbauer spectroscopy were not conclusive. Rujian et al 8 reported that dibutyltin laurate (DBTDL) prevented the formation of longer polyene lengths, and coloration of PVC was retarded effectively in this way. DBTDL cannot prevent the formation of shorter polyene length.…”

mentioning

confidence: 99%

“…Thermal dehydrochlorination still occurred but its rate was decreased and longer polyenes were formed. 8 There was no change in color of the PVC films with a commercial organo tin stabilizer with trade name Sn500K at 160…”

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confidence: 99%

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Tin soaps in emulsion PVC heat stabilization

Arkış

Balköse

2002

Adv Polym Technol

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ABSTRACT:In this study, the effect of a liquid stabilizer based on organotins on PVC heat stability is investigated. Control and films with tin soap heat stabilizer Sn500K were prepared by solvent casting and they were heated at 160 and 180• C for different time periods. X-ray fluorescence spectroscopy analysis showed that tin was present in Sn500K and it was lead-free. DSC analysis showed that glass-transition temperature of films with Sn500K increased from 67 to 75-85• C by heating for 15 min at 180 • C. IR spectroscopy indicated that concentration of carboxylate groups of Sn500K decreased with heating. Films with Sn500K did not degrade for short heating periods; however, degradation occurred in long heating times. Low concentration of Sn500K was recommended, since at high levels incompatibility with PVC and acceleration of degradation was observed. In the high temperature range, control and stabilized samples degraded in the same manner in two steps.

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A recycling assessment of PVC bottles by means of heat impact evaluation on its reprocessing

Ulutan

1998

J. Appl. Polym. Sci.

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Poly(vinyl chloride) (PVC) products are very convenient for reclaiming and recycling. Therefore, the heat impact at 160-180ЊC temperature during the recycling process was investigated in the current study by means of spectroscopic studies, such as infrared and ultraviolet, and of differential scanning calorimetry curves. The bottle samples are slightly and considerably affected at 160 and 180ЊC heat treatments, respectively, which were determined as the formed decomposition products, color change, loss of volatile components, and peroxide formation in air. However, since this decomposition occurred at 30 min of experimental time, which is about sixfold that of real process times, the reclaimed material found recyclable as is. Judicious recomposition of the powdered reclaimed material making up the lost or consumed component makes possible the use of this material in the production of window sections, profiles, pipes, and even bottles.

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Effect of organotin stabiliser on the thermal stabilisation of PVC: Part I—The influence of dibutyltin dilaurate on polyene sequences

Cited by 17 publications

References 5 publications

Thermal stabilisation of poly(vinyl chloride) by organotin compounds

Thermal stabilisation of poly(vinyl chloride) by organotin compounds

Tin soaps in emulsion PVC heat stabilization

A recycling assessment of PVC bottles by means of heat impact evaluation on its reprocessing

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