Plasticiser loss from plastic or rubber products through
The migration of plasticiser from polymers to a gas phase is a two-step process that includes diffusion from the polymer bulk to the surface followed by evaporation from the surface to the...
Diffusion of plasticizers in rubbery poly(vinyl chloride
Diffusion of plasticizers in rubbery poly(vinyl chloride): effects of molecular shape Ernst Von Meerwall Daniel Skowronski Arvind Hariharan Cite this: Macromolecules1991, 24, 9, 2441-2449 Publication Date(Print):April 29, 1991 Publication History Publishedonline1 May 2002 Publishedinissue29 April 1991 https://doi.org/10.1021/ma00009a048
Diffusion of plasticizers in rubbery poly(vinyl chloride
Self-diffusion of commercial plasticizers in PVC was studied by NMR at temperatures between 75 and 175°C and at concentrations c from 10 to 60 wt % plasticizer. Diffusion of the neat plasticizers in CCl 4 was also measured. The temperature dependance of the diffusion coefficient D in PVC generally followed the WLF expression. Plasticizer molecular shape affected D in PVC but not in liquid
Effects of molecular design parameters on plasticizer
Abstract. Using all-atom molecular simulation, a wide range of plasticizers for poly (vinyl chlorid) (PVC), including ortho- and tere-phthalates, trimellitates, citrates, and various aliphatic dicarboxylates, are systematically studied. We focus on the effects of plasticizer molecular structure on its performance, as measured by performance
Enhanced migration of plasticizers from polyvinyl chloride
1. Introduction. Plasticizers are additives that have been extensively used for the softening of plastic products, which may comprise 15–50 % mass of the product (Chaudhary et al., 2016; Olkowska and Grini, 2025) and 10–70 % by mass of additive, of which about 80 % of plasticizers are used in polyvinyl chloride (PVC) and remaining 20 % in cellulose plastics (Hahladakis et al., 2018
- Can plasticizers be released from polymer films through vapor phase?
- A model study for release of plasticizers from polymer films through vapor phase. J. Appl. Polym. Sci. 29, 3185–3195 (1984). Ljungberg, N., Andersson, T. & Wesslén, B. Film extrusion and film weldability of poly (lactic acid) plasticized with triacetine and tributyl citrate. J. Appl. Polym. Sci. 88, 3239–3247 (2003).
- How do plasticisers affect the diffusion properties of biopolymers during ageing?
- The cold crystallisation of biopolymers, such as PLA 38, 54, 55, 56 and starch 57, 58, is accelerated in the presence of plasticisers, 59 which increases the crystallinity and then the plasticiser concentration in the amorphous region. This, in turn, affects the plasticiser diffusion properties during ageing.
- How do plasticisers leave a polymer?
- Plasticisers, when not chemically attached to polymer chains, can in certain conditions leave the polymer through migration, evaporation or extraction by liquids.
- Do plasticisers migrate from polymers to a gas phase?
- This paper addresses the kinetics and predictions of plasticiser migration from polymers to a surrounding gas phase, an important issue for plastic and rubber products exposed to high service temperature conditions and during accelerated ageing and testing.
- What is evaporation-controlled and diffusion-controlled plasticiser?
- The loss is either diffusion- or evaporation-controlled, where the former usually occurs at high temperatures and the latter at low temperatures. In the evaporation-controlled mode, a film of plasticiser is often formed at the surface, which is indicated by a linear loss with time, at least over a certain time period.
- Is plasticiser diffusivity concentration-dependent?
- The fact that the plasticiser diffusivity is plasticiser concentration-dependent can lead to a shift in the loss-mode (from diffusion to evaporation control) at otherwise constant conditions.
