Effects of electron beam irradiation on properties of corn starch undergone periodate oxidation mechanism blended with polyvinyl alcohol
This work was performed to examine the properties of pristine PVOH and PVOH-starch blends under exposure of different irradiation dosages. The periodate oxidation method was used to produce dialdehyde starch. The application of low dosages of electron beam irradiation (=10 kGy) has improved the tens...
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my.utm.839742019-11-05T04:33:37Z http://eprints.utm.my/id/eprint/83974/ Effects of electron beam irradiation on properties of corn starch undergone periodate oxidation mechanism blended with polyvinyl alcohol B., Soo Tueen Lee, Tin Sin Ratnam, C. T. Yap, Bee Fen Rahmat, A. R. TP Chemical technology This work was performed to examine the properties of pristine PVOH and PVOH-starch blends under exposure of different irradiation dosages. The periodate oxidation method was used to produce dialdehyde starch. The application of low dosages of electron beam irradiation (=10 kGy) has improved the tensile strength by forming crosslinking networks. However, the tensile strength drastically declined when radiated at 30 kGy due to the reduction of available hydroxyl groups inside polymer matrix for intermolecular interaction. Also, the incorporation of corn starch and dialdehyde starch has significantly reduced the melting temperature and enthalpy of melting of PVOH blends due to cessation of the hydrogen bonding between PVOH and starch molecules. The crystallite size for deflection planes (1 0 1), (1 0 1) and (2 0 0) for all PVOH blends was significant reduced when irradiated. The electron beam irradiation has also weakened the hydrophilic characteristic of all PVOH blends as evidenced in infrared and microscopy analysis. Elsevier B.V. 2018-01 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/83974/1/SooTueenBee2018_EffectsofElectronBeamIrradiationonProperties.pdf B., Soo Tueen and Lee, Tin Sin and Ratnam, C. T. and Yap, Bee Fen and Rahmat, A. R. (2018) Effects of electron beam irradiation on properties of corn starch undergone periodate oxidation mechanism blended with polyvinyl alcohol. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 416 . pp. 73-88. ISSN 0168-583X http://dx.doi.org/10.1016/j.nimb.2017.12.014 DOI:10.1016/j.nimb.2017.12.014 |
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This work was performed to examine the properties of pristine PVOH and PVOH-starch blends under exposure of different irradiation dosages. The periodate oxidation method was used to produce dialdehyde starch. The application of low dosages of electron beam irradiation (=10 kGy) has improved the tensile strength by forming crosslinking networks. However, the tensile strength drastically declined when radiated at 30 kGy due to the reduction of available hydroxyl groups inside polymer matrix for intermolecular interaction. Also, the incorporation of corn starch and dialdehyde starch has significantly reduced the melting temperature and enthalpy of melting of PVOH blends due to cessation of the hydrogen bonding between PVOH and starch molecules. The crystallite size for deflection planes (1 0 1), (1 0 1) and (2 0 0) for all PVOH blends was significant reduced when irradiated. The electron beam irradiation has also weakened the hydrophilic characteristic of all PVOH blends as evidenced in infrared and microscopy analysis. |
format |
Article |
author |
B., Soo Tueen Lee, Tin Sin Ratnam, C. T. Yap, Bee Fen Rahmat, A. R. |
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B., Soo Tueen Lee, Tin Sin Ratnam, C. T. Yap, Bee Fen Rahmat, A. R. |
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B., Soo Tueen |
title |
Effects of electron beam irradiation on properties of corn starch undergone periodate oxidation mechanism blended with polyvinyl alcohol |
title_short |
Effects of electron beam irradiation on properties of corn starch undergone periodate oxidation mechanism blended with polyvinyl alcohol |
title_full |
Effects of electron beam irradiation on properties of corn starch undergone periodate oxidation mechanism blended with polyvinyl alcohol |
title_fullStr |
Effects of electron beam irradiation on properties of corn starch undergone periodate oxidation mechanism blended with polyvinyl alcohol |
title_full_unstemmed |
Effects of electron beam irradiation on properties of corn starch undergone periodate oxidation mechanism blended with polyvinyl alcohol |
title_sort |
effects of electron beam irradiation on properties of corn starch undergone periodate oxidation mechanism blended with polyvinyl alcohol |
publisher |
Elsevier B.V. |
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2018 |
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http://eprints.utm.my/id/eprint/83974/1/SooTueenBee2018_EffectsofElectronBeamIrradiationonProperties.pdf http://eprints.utm.my/id/eprint/83974/ http://dx.doi.org/10.1016/j.nimb.2017.12.014 |
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