2013
DOI: 10.1016/j.eurpolymj.2012.11.021
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Rheological studies of polycaprolactone in supercritical CO2

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Cited by 17 publications
(19 citation statements)
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References 25 publications
(17 reference statements)
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“…This transition is associated with the melting of crystal spherulites in the polymer. The T m at atmospheric pressure, as measured by rheology, is therefore 68.1 ± 0.6 °C, in good agreement with T m reported elsewhere in the literature [37,45] and with that measured by DSC in this work (64.6 ± 0.2 °C). This is a powerful demonstration of the ability of CO 2 to act as a temporary plasticiser for PCL, by diffusing into the polymer and interacting through Lewis acid/base interactions with the carbonyl groups of the backbone.…”
Section: Effect Of Pressure On T M Of Pcl10supporting
confidence: 92%
See 1 more Smart Citation
“…This transition is associated with the melting of crystal spherulites in the polymer. The T m at atmospheric pressure, as measured by rheology, is therefore 68.1 ± 0.6 °C, in good agreement with T m reported elsewhere in the literature [37,45] and with that measured by DSC in this work (64.6 ± 0.2 °C). This is a powerful demonstration of the ability of CO 2 to act as a temporary plasticiser for PCL, by diffusing into the polymer and interacting through Lewis acid/base interactions with the carbonyl groups of the backbone.…”
Section: Effect Of Pressure On T M Of Pcl10supporting
confidence: 92%
“…A change in the morphology of the polymer under CO 2 was also observed by Kelly et althrough infrared (IR) analysis by monitoring the carbonyl peak at 1720 cm -1 [44], and a decrease in the reptation time in the presence of high-pressure CO 2 was also found by the same group [45]. The plasticisation of this polymer under CO 2 was also studied optically [46,47] and through high-pressure calorimetry [48].…”
Section: Introductionmentioning
confidence: 54%
“…Therefore, the viscosity is found to decrease, which indicates a shear-shinning behavior in all the regions [22,35]. Figure 3 shows the temperature shift factors and the Arrhenius (Eq.…”
Section: Feasibility Analysis Of the Measurementmentioning
confidence: 99%
“…However, the Couette geometry was not recommended for the rheological characterization of the polymer/CO 2 solution because the poor melt fluidity impeded the filling process and the geometry's large contact region limited the test range. Recently, researchers have been using a plate-plate geometry loaded in a high-pressure cell [21][22][23]. This configuration is beneficial for gas diffusion because the gap is just 1-2 mm and the sample can be easily cleaned.…”
Section: Introductionmentioning
confidence: 99%
“…process intensification) is also attractive when making allowance for possible industrial applications. This is true for polymer blends where the effect of scCO 2 on the interfacial tension between the two polymers and the rheological behavior, both crucial in determining the final morphology, can be accurately measured . Even more interesting, from a scientific point of view, is the preparation of polymer composites, where scCO 2 can positively influence the dispersion of the filler or even help in exfoliating it (e.g.…”
Section: Functionalization and Blendingmentioning
confidence: 99%