Evaluation of Varnishes to Slow Down the Aging of Plasticized PVC
Abstract
This study investigates the preventive and curative potential of surface varnishes to mitigate the aging of plasticized PVC (p‐PVC), with particular emphasis on the influence of the PVC formulation on coating efficiency. Two industrial p‐PVC formulations were studied: PVC‐nP plasticized with Diisodecyl Phthalate and Epoxidized Soybean Oil, and PVC‐wP containing an additional phosphate plasticizer, each in pigmented and unpigmented versions. Three aqueous polyurethane‐based varnishes, vPU, vVA, and vFC were applied, and the samples were subjected to artificial aging under cyclic temperature and humidity conditions. Color changes associated with dehydrochlorination and plasticizer migration were monitored. The results demonstrate that the effectiveness of barrier coatings is strongly formulation‐dependent. Phosphate‐containing PVC‐wP exhibited faster mass loss due to the early migration of the phosphate plasticizer, limiting the protective effect of the investigated coatings, whereas the vPU varnish markedly improved the stability of PVC‐nP by reducing both color variation and plasticizer loss. Moreover, coating efficiency depended not only on the PVC formulation but also on the degradation state of the material at the time of application, with earlier application providing greater protection.
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BibTeX
@article{larrieu2026evaluation,
title = {{Evaluation of Varnishes to Slow Down the Aging of Plasticized PVC}},
author = {Mathilde Larrieu and Nathalie Balcar and Gilles Barabant and Maroussia Duranton and Odile Fichet and Sophie Cantin},
journal = {Journal of Applied Polymer Science},
year = {2026},
month = sep,
doi = {10.1002/app.71450},
url = {https://hal.science/hal-05774607v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Evaluation of Varnishes to Slow Down the Aging of Plasticized PVC
AU - Mathilde Larrieu
AU - Nathalie Balcar
AU - Gilles Barabant
AU - Maroussia Duranton
AU - Odile Fichet
AU - Sophie Cantin
PY - 2026
DA - 2026/09/02
JO - Journal of Applied Polymer Science
DO - 10.1002/app.71450
UR - https://hal.science/hal-05774607v1
AB - This study investigates the preventive and curative potential of surface varnishes to mitigate the aging of plasticized PVC (p‐PVC), with particular emphasis on the influence of the PVC formulation on coating efficiency. Two industrial p‐PVC formulations were studied: PVC‐nP plasticized with Diisodecyl Phthalate and Epoxidized Soybean Oil, and PVC‐wP containing an additional phosphate plasticizer, each in pigmented and unpigmented versions. Three aqueous polyurethane‐based varnishes, vPU, vVA, and vFC were applied, and the samples were subjected to artificial aging under cyclic temperature and humidity conditions. Color changes associated with dehydrochlorination and plasticizer migration were monitored. The results demonstrate that the effectiveness of barrier coatings is strongly formulation‐dependent. Phosphate‐containing PVC‐wP exhibited faster mass loss due to the early migration of the phosphate plasticizer, limiting the protective effect of the investigated coatings, whereas the vPU varnish markedly improved the stability of PVC‐nP by reducing both color variation and plasticizer loss. Moreover, coating efficiency depended not only on the PVC formulation but also on the degradation state of the material at the time of application, with earlier application providing greater protection.
SN - 0021-8995
SN - 1097-4628
ER -