Effect of thermal annealing on plasticizer migration in poly(vinyl chloride)/dioctyl phthalate system

Papaspyrides, Constantine; Tingas, S. G.

doi:10.1002/1097-4628(20010307)79:10<1780::aid-app60>3.3.co;2-1

Cited by 2 publications

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“…An increase in the crystallinity over time could change the compatibility of the plasticizer with PLA and induce phase separation and segregation or migration of the plasticizer 5. Migration of additives within poly(ethylene) films5 and within poly(vinyl chloride) sheets6 have been studied. It was shown that small molecular substances migrated out of the polymer bulk as the crystallinity increased in the material.…”

Section: Introductionmentioning

confidence: 99%

Film extrusion and film weldability of poly(lactic acid) plasticized with triacetine and tributyl citrate

Ljungberg

Andersson

Wesslén

2003

J of Applied Polymer Sci

190

118

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Film extrusion and welding of biodegradable polymer films are important processes that must be considered in the development of compostable packaging materials. Film extrusion of poly(lactic acid) (PLA) has proved to be rather difficult because of its brittleness, but the flexibility of PLA can be improved by incorporation of a plasticizer in the material. PLA was plasticized with triacetine (TAc) and tributyl citrate (TbC). The blended materials and neat PLA were film extruded and the films were welded with constant heat (CH) welding. The films were analyzed by means of gas chromatography (GC), dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), gel permeation chromatography (GPC), contact angle measurements, and tensile testing. Storage of the plasticized films resulted in an increased crystallinity and changes in the film properties, rendering CH welding difficult. The welding process had no influence on thermal properties, such as cold crystallization temperature, melting temperature, crystallization temperature, and degree of crystallinity, of neat PLA but caused significant changes in the crystallinity of the plasticized materials.

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Section: Introductionmentioning

confidence: 99%

Film extrusion and film weldability of poly(lactic acid) plasticized with triacetine and tributyl citrate

Ljungberg

Andersson

Wesslén

2003

J of Applied Polymer Sci

190

118

View full text Add to dashboard Cite

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“…Unlike the mass measurements, a noticeable increase in hardness was evident even at the lowest aging temperature of 40°C. The reason for this is not known, but it might be attributed to re‐ordering and compaction of the plasticized structure as the polymer chains moved relative to one another over time (since this test temperature was close to the T g of the plasticized specimens) and a possible increase in lamellar crystal thickness of the polymer, as observed in a previous study on annealing of plasticized PVC . The hardness values tended to increase over time at all three temperatures, but with TOTM as plasticizer, there was not as much of a difference between the 80°C and 120°C measurements as would have been expected from the mass loss results.…”

Section: Resultsmentioning

confidence: 75%

Absorption and migration of bio‐based epoxidized soybean oil and its mixtures with tri(2‐ethylhexyl) trimellitate in poly(vinylchloride)

Mao

Chaudhary

Sun

et al. 2015

J of Applied Polymer Sci

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The efficacy of epoxidized soybean oil (ESO), tri(2‐ethylhexyl) trimellitate, and mixtures thereof as plasticizers for poly(vinylchloride) has been studied. At 80°C, the trimellitate was slower to absorb in this polymer than ESO and was also less soluble, but the former exhibited higher solubility at 120°C. Plasticization efficiencies of stabilized polymeric compositions were similar with ESO and the trimellitate (despite their very different molecular weights). The trimellitate yielded greater mass loss during heat aging of the plasticized compositions, but substituting even minor amounts of it with ESO decreased mass loss synergistically. The trimellitate also resulted in more of an increase in hardness than ESO over time at elevated temperatures, but when aged at 120°C, mixtures of the two surprisingly had more deleterious effects. Thus, although ESO can replace part or all of trimellitates in plasticized PVC, using it as sole plasticizer would be preferable when heat aging performance is a requirement. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41966.

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Effect of thermal annealing on plasticizer migration in poly(vinyl chloride)/dioctyl phthalate system

Cited by 2 publications

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Film extrusion and film weldability of poly(lactic acid) plasticized with triacetine and tributyl citrate

Film extrusion and film weldability of poly(lactic acid) plasticized with triacetine and tributyl citrate

Absorption and migration of bio‐based epoxidized soybean oil and its mixtures with tri(2‐ethylhexyl) trimellitate in poly(vinylchloride)

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