Diffusion of modified vegetables oils in thermoplastic polymers

Bétron, Cyrille; Bounor‐Legaré, Véronique; Pinel, Catherine; Scalabrino, Gabrielle; Djakovitch, Laurent; Cassagnau, Philippe

doi:10.1016/j.matchemphys.2017.07.059

Cited by 7 publications

(3 citation statements)

References 37 publications

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“…Studies indicate that the diffusion of the low viscosity component into the polymer generates a concentration gradient, thus leading to viscosity variations. As the viscosity is directly linked to the transport behavior between the two components, the measured viscosity of the system increases if diffusion occurs. All samples indeed displayed a rapid increase in viscosity in the first minutes of the experiment, indicating facile diffusion of the PE oligomer into the selected polyolefins.…”

Section: Resultsmentioning

confidence: 99%

“…In the present work, the blending of a low viscosity polyethylene oligomer with high viscosity polypropylene and high‐density polyethylene resins was considered, with viscosity ratios in the range of 10 −5 to 10 −6 . Recent studies have highlighted the efficiency of bilayer rheological measurements to investigate the diffusion of low viscosity plasticizers into polymers. This technique is very adequate in the case of miscible polymers and discriminating toward nondiffusive blends.…”

Section: Introductionmentioning

confidence: 99%

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Rheology and crystallization behavior of polypropylene and high‐density polyethylene in the presence of a low molar mass polyethylene

Michael

Fulchiron

Cassagnau

2019

Polymer Crystallization

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The rheological behavior and crystallization behavior of high density polyethylene (HDPE) and polyethylene (PE) oligomer (HDPE/PE oligomer) and polypropylene (PP) and polyethylene oligomer (PP/PE oligomer) binary blends were investigated in this study. Batch processing along with rheological model experiments revealed that molecular diffusion is the dominating mechanism in the homogenization of such blends. Further rheological characterization and modeling (using the Carreau‐Yasuda equation) allowed to demonstrate that the PE oligomer is miscible in both polymers, but that saturation may occur at high concentrations. Thermal analysis as well as polarized light and electronic microscopy showed that both systems undergo solid‐liquid phase separation upon cooling, with direct consequences on the mechanical properties of the blends. The concentrations at which saturation (in the melt), phase separation (upon cooling), and degradation of the mechanical properties occur were found to be dependent on the nature of the polymer; around 20 to 30 wt% for HDPE and 5 to 10 wt% in the case of PP.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rheology and crystallization behavior of polypropylene and high‐density polyethylene in the presence of a low molar mass polyethylene

Michael

Fulchiron

Cassagnau

2019

Polymer Crystallization

Self Cite

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“…Nevertheless, the solubility parameter method has shortcomings when applied to complex systems (Betron et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Interfacial Effects of Plasticizers On The Properties of Cellulose Diacetate Materials

Hu¹,

Zhang²,

Wei³

et al. 2021

Preprint

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Cellulose diacetate (CDA) is a biodegradable biobased polymer, which is not easily melt-processable with a narrow window between flowing and decomposition temperature. Selecting the appropriate plasticizer and evaluating its effect on the properties are important for the application developments of CDA materials. In this paper, eco-friendly plasticizers, such as glycerin (GL), diacetin (DA), triacetin (TA) and polyethylene glycol (PEG) are necessarily introduced. The plasticizing effect is evaluated by harmonic interface energy between CDA and plasticizer from contact angle test. Compared with solubility parameter method, the interfacial method is more effective to estimate PEG with different molecular weight in CDA. Thermal behaviors verify the interfacial method works. Lower interface energy of CDA-DA shows lower glass transition temperature (Tg) determined by differential scanning calorimetry (DSC). Meanwhile, mechanical property, transparency and moisture permeability are all related to the interfacial effects of plasticizers. For instance, the elongation at break of CDA-DA and CDA-TA, which have lower interfacial energy, increase from 14% to 26% and 29%. The CDA-DA and CDA-TA films also have high visible light transmittance about 90%. The moisture permeability of plasticized CDA film increases with the decreased interface energy between water and plasticizer. Interfacial method provides a new route for preparing high-performance CDA materials.

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Interfacial effects of plasticizers on the properties of cellulose diacetate materials

Liu

Zhang

et al. 2022

Cellulose

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Diffusion of modified vegetables oils in thermoplastic polymers

Cited by 7 publications

References 37 publications

Rheology and crystallization behavior of polypropylene and high‐density polyethylene in the presence of a low molar mass polyethylene

Rheology and crystallization behavior of polypropylene and high‐density polyethylene in the presence of a low molar mass polyethylene

Interfacial Effects of Plasticizers On The Properties of Cellulose Diacetate Materials

Interfacial effects of plasticizers on the properties of cellulose diacetate materials

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