Evaluation of PE Films Having NIR-Reflective Additives for Greenhouse Applications in Arid Regions
Linear-low-density-polyethylene- (LLDPE-) based formulations with several near-infrared- (NIR-) reflective pigments were prepared by melt blending technique and their subsequent films were prepared by blown film extrusion process. Thermal properties of these films were evaluated using differential s...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2013/575081 |
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| author | Syed K. H. Gulrez Ahmed M. Abdel-Ghany Ibrahim M. Al-Helal Saeed M. Al-Zaharani Abdullah A. Alsadon |
| author_facet | Syed K. H. Gulrez Ahmed M. Abdel-Ghany Ibrahim M. Al-Helal Saeed M. Al-Zaharani Abdullah A. Alsadon |
| author_sort | Syed K. H. Gulrez |
| collection | DOAJ |
| description | Linear-low-density-polyethylene- (LLDPE-) based formulations with several near-infrared- (NIR-) reflective pigments were prepared by melt blending technique and their subsequent films were prepared by blown film extrusion process. Thermal properties of these films were evaluated using differential scanning calorimetry (DSC). The results showed that the melting and crystallization temperatures (Tm and Tc, resp.) of these formulations were almost similar to that of control resin. The melt viscosity was measured by stress-controlled rotational rheometer and melt flow index (MFI) instruments. Rheological measurements indicated that the blend formulations with NIR-reflective additive have similar melt viscoelastic behavior (storage modulus and dynamic viscosity) to the control resin. The mechanical test performed on NIR-reflective films showed similar values of tensile strength for blend samples as that of control resin. The spectral radiometric properties of the blend films were evaluated in the solar wavelength range of 200–1100 nm and found to be improved over the control sample without having NIR-reflective pigment. |
| format | Article |
| id | doaj-art-e2f1945f96854acca107d6c015fbf87f |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-e2f1945f96854acca107d6c015fbf87f2025-02-03T06:08:47ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422013-01-01201310.1155/2013/575081575081Evaluation of PE Films Having NIR-Reflective Additives for Greenhouse Applications in Arid RegionsSyed K. H. Gulrez0Ahmed M. Abdel-Ghany1Ibrahim M. Al-Helal2Saeed M. Al-Zaharani3Abdullah A. Alsadon4Chemical Engineering Department, College of Engineering, King Saud University, Riyadh 11451, Saudi ArabiaAgricultural Engineering Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi ArabiaAgricultural Engineering Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi ArabiaChemical Engineering Department, College of Engineering, King Saud University, Riyadh 11451, Saudi ArabiaPlant Production Department, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi ArabiaLinear-low-density-polyethylene- (LLDPE-) based formulations with several near-infrared- (NIR-) reflective pigments were prepared by melt blending technique and their subsequent films were prepared by blown film extrusion process. Thermal properties of these films were evaluated using differential scanning calorimetry (DSC). The results showed that the melting and crystallization temperatures (Tm and Tc, resp.) of these formulations were almost similar to that of control resin. The melt viscosity was measured by stress-controlled rotational rheometer and melt flow index (MFI) instruments. Rheological measurements indicated that the blend formulations with NIR-reflective additive have similar melt viscoelastic behavior (storage modulus and dynamic viscosity) to the control resin. The mechanical test performed on NIR-reflective films showed similar values of tensile strength for blend samples as that of control resin. The spectral radiometric properties of the blend films were evaluated in the solar wavelength range of 200–1100 nm and found to be improved over the control sample without having NIR-reflective pigment.http://dx.doi.org/10.1155/2013/575081 |
| spellingShingle | Syed K. H. Gulrez Ahmed M. Abdel-Ghany Ibrahim M. Al-Helal Saeed M. Al-Zaharani Abdullah A. Alsadon Evaluation of PE Films Having NIR-Reflective Additives for Greenhouse Applications in Arid Regions Advances in Materials Science and Engineering |
| title | Evaluation of PE Films Having NIR-Reflective Additives for Greenhouse Applications in Arid Regions |
| title_full | Evaluation of PE Films Having NIR-Reflective Additives for Greenhouse Applications in Arid Regions |
| title_fullStr | Evaluation of PE Films Having NIR-Reflective Additives for Greenhouse Applications in Arid Regions |
| title_full_unstemmed | Evaluation of PE Films Having NIR-Reflective Additives for Greenhouse Applications in Arid Regions |
| title_short | Evaluation of PE Films Having NIR-Reflective Additives for Greenhouse Applications in Arid Regions |
| title_sort | evaluation of pe films having nir reflective additives for greenhouse applications in arid regions |
| url | http://dx.doi.org/10.1155/2013/575081 |
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