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Rheology and pressurised gyration of starch and starch-loaded poly(ethylene oxide)

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Rheology and pressurised gyration of starch and starch-loaded poly(ethylene oxide). / Mahalingam, S.; Ren, Guogang; Edirisinghe, M. J.

In: Carbohydrate Polymers, Vol. 114, 19.12.2014, p. 279-287.

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@article{ee47709af82b4f45b82a3a8e8d060934,
title = "Rheology and pressurised gyration of starch and starch-loaded poly(ethylene oxide)",
abstract = "This work investigates the rheology and spinning of starch and starch-loaded poly(ethylene oxide) (PEO) by pressurised gyration in order to prepare nanofibres. The spinning dope's rheological properties played a crucial role in fibre formation. Newtonian behaviour is observed in 1-20 wt% starch suspensions and non-Newtonian behaviour is found in all the PEO-starch mixtures. Pressurised gyration of the starch suspensions produced beads only but PEO-starch mixtures generated fibres. The fibre diameter of the PEO-starch samples is shown to be a function of polymer concentration and rotating speed of the gyration system. Fibre formation can only be facilitated below a certain working pressure. The concentration of starch in the PEO-starch mixtures is crucial in defining whether beaded or continuous fibres were generated and this is related to the composition of the spinning dope. FT-IR, XRD and microscopy studies indicated very good miscibility of starch and PEO in the nanofibres. The storage modulus of the PEO-starch were also studied as a function of temperature (30-150 °C) and showed interesting results but it was not possible to deduce general trends valid for the entire temperature range.",
keywords = "Gyration, Nanofibres, Polymer, Pressure, Starch",
author = "S. Mahalingam and Guogang Ren and Edirisinghe, {M. J.}",
year = "2014",
month = dec,
day = "19",
doi = "10.1016/j.carbpol.2014.08.007",
language = "English",
volume = "114",
pages = "279--287",
journal = "Carbohydrate Polymers",
issn = "0144-8617",
publisher = "Elsevier Limited",

}

RIS

TY - JOUR

T1 - Rheology and pressurised gyration of starch and starch-loaded poly(ethylene oxide)

AU - Mahalingam, S.

AU - Ren, Guogang

AU - Edirisinghe, M. J.

PY - 2014/12/19

Y1 - 2014/12/19

N2 - This work investigates the rheology and spinning of starch and starch-loaded poly(ethylene oxide) (PEO) by pressurised gyration in order to prepare nanofibres. The spinning dope's rheological properties played a crucial role in fibre formation. Newtonian behaviour is observed in 1-20 wt% starch suspensions and non-Newtonian behaviour is found in all the PEO-starch mixtures. Pressurised gyration of the starch suspensions produced beads only but PEO-starch mixtures generated fibres. The fibre diameter of the PEO-starch samples is shown to be a function of polymer concentration and rotating speed of the gyration system. Fibre formation can only be facilitated below a certain working pressure. The concentration of starch in the PEO-starch mixtures is crucial in defining whether beaded or continuous fibres were generated and this is related to the composition of the spinning dope. FT-IR, XRD and microscopy studies indicated very good miscibility of starch and PEO in the nanofibres. The storage modulus of the PEO-starch were also studied as a function of temperature (30-150 °C) and showed interesting results but it was not possible to deduce general trends valid for the entire temperature range.

AB - This work investigates the rheology and spinning of starch and starch-loaded poly(ethylene oxide) (PEO) by pressurised gyration in order to prepare nanofibres. The spinning dope's rheological properties played a crucial role in fibre formation. Newtonian behaviour is observed in 1-20 wt% starch suspensions and non-Newtonian behaviour is found in all the PEO-starch mixtures. Pressurised gyration of the starch suspensions produced beads only but PEO-starch mixtures generated fibres. The fibre diameter of the PEO-starch samples is shown to be a function of polymer concentration and rotating speed of the gyration system. Fibre formation can only be facilitated below a certain working pressure. The concentration of starch in the PEO-starch mixtures is crucial in defining whether beaded or continuous fibres were generated and this is related to the composition of the spinning dope. FT-IR, XRD and microscopy studies indicated very good miscibility of starch and PEO in the nanofibres. The storage modulus of the PEO-starch were also studied as a function of temperature (30-150 °C) and showed interesting results but it was not possible to deduce general trends valid for the entire temperature range.

KW - Gyration

KW - Nanofibres

KW - Polymer

KW - Pressure

KW - Starch

U2 - 10.1016/j.carbpol.2014.08.007

DO - 10.1016/j.carbpol.2014.08.007

M3 - Article

AN - SCOPUS:84906985889

VL - 114

SP - 279

EP - 287

JO - Carbohydrate Polymers

JF - Carbohydrate Polymers

SN - 0144-8617

ER -