Results 211 to 220 of about 44,217 (244)
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Journal of Alloys and Compounds, 2009
Abstract Isothermal crystallization kinetics of syndiotactic polystyrene (sPS) is reported in this work with Avrami analytical method. It was found that the spherulite growth rate and overall crystallization rate depend on the crystallization temperatures, average molecular weight ( M ¯ W ) and polydispersity index (PDI). The experimental
Chen-Ming Chen +2 more
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Abstract Isothermal crystallization kinetics of syndiotactic polystyrene (sPS) is reported in this work with Avrami analytical method. It was found that the spherulite growth rate and overall crystallization rate depend on the crystallization temperatures, average molecular weight ( M ¯ W ) and polydispersity index (PDI). The experimental
Chen-Ming Chen +2 more
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Advanced Energy Materials, 2020
AbstractThe degree of polymerization can cause significant changes in the blend microstructure and physical mechanism of the active layer of non‐fullerene polymer solar cells, resulting in a huge difference in device performance. However, the diversity of stability issues, including photobleaching stability, storage stability, photostability, thermal ...
Mumin Shi +8 more
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AbstractThe degree of polymerization can cause significant changes in the blend microstructure and physical mechanism of the active layer of non‐fullerene polymer solar cells, resulting in a huge difference in device performance. However, the diversity of stability issues, including photobleaching stability, storage stability, photostability, thermal ...
Mumin Shi +8 more
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Applied Optics, 2007
A method to extract the complex refractive index of spherical particles from a polydisperse suspension at concentrations where multiple light-scattering effects are significant is presented. The optical constants are estimated from total diffuse reflectance and transmittance measurements and inverting the measurements using the radiative transfer ...
Velazco-Roa MA, Thennadil SN
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A method to extract the complex refractive index of spherical particles from a polydisperse suspension at concentrations where multiple light-scattering effects are significant is presented. The optical constants are estimated from total diffuse reflectance and transmittance measurements and inverting the measurements using the radiative transfer ...
Velazco-Roa MA, Thennadil SN
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Journal of the Mechanical Behavior of Biomedical Materials, 2010
Four variants of poly (methyl methacrylate) (PMMA) bone cement were used, the difference being in the method used to sterilize the powder (three different dosages of gamma irradiation and ethylene oxide gas) and, hence, in the molecular weight of the powder. For each cement powder, the number-average molecular weight and weight-average molecular weight
Gladius, Lewis, Yuan, Li
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Four variants of poly (methyl methacrylate) (PMMA) bone cement were used, the difference being in the method used to sterilize the powder (three different dosages of gamma irradiation and ethylene oxide gas) and, hence, in the molecular weight of the powder. For each cement powder, the number-average molecular weight and weight-average molecular weight
Gladius, Lewis, Yuan, Li
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International Journal of Nanoelectronics and Materials (IJNeaM), 2023
Using mixed non-ionic surfactants Tween/Span, we determined the required hydrophilic-lipophilic balance (HLB) value on the oil in water nanoemulsion of lemon myrtle essential oil. In this study, Span 80 mixed with Tween 80, and Span 20 mixed with Tween 20 were used as mixed non-ionic surfactant.
null Siti Noraini Bunawan +4 more
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Using mixed non-ionic surfactants Tween/Span, we determined the required hydrophilic-lipophilic balance (HLB) value on the oil in water nanoemulsion of lemon myrtle essential oil. In this study, Span 80 mixed with Tween 80, and Span 20 mixed with Tween 20 were used as mixed non-ionic surfactant.
null Siti Noraini Bunawan +4 more
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Polymer, 1972
Abstract Theoretical equations are deduced which predict that the specific refractive index of a polymer in solution is v = v ∞ + v 0 M n , where M n is the number average molecular weight, and v∞ and v0 depend on the refractive index, n1, of the solvent, on the specific refractivity of the pure polymer, and on
J.W. Lorimer, D.E.G. Jones
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Abstract Theoretical equations are deduced which predict that the specific refractive index of a polymer in solution is v = v ∞ + v 0 M n , where M n is the number average molecular weight, and v∞ and v0 depend on the refractive index, n1, of the solvent, on the specific refractivity of the pure polymer, and on
J.W. Lorimer, D.E.G. Jones
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Journal of Flow Chemistry, 2014
Regioregular poly(3-hexylthiophene), rr-P3HT, has been commonly synthesized using Grignard metathesis (GRIM) polymerization and is used as an active material for large area printing of various optoelectronic devices. Batch to batch reproducibility which is very crucial for the development of a large area printing technology for any material still ...
Anshu Kumar +8 more
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Regioregular poly(3-hexylthiophene), rr-P3HT, has been commonly synthesized using Grignard metathesis (GRIM) polymerization and is used as an active material for large area printing of various optoelectronic devices. Batch to batch reproducibility which is very crucial for the development of a large area printing technology for any material still ...
Anshu Kumar +8 more
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Powder Technology, 1974
Abstract Mie scattering at two different wavelengths was used to determine the mean diameter, the polydispersity and the refractive index of Dow Latex 642-6. The experimental intensity curves were compared with computer-calculated Mie scattering curves, for different diameters, width of the size distribution and refractive indices, in order to find ...
F. Robillard, A.J. Patitsas, B.H. Kaye
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Abstract Mie scattering at two different wavelengths was used to determine the mean diameter, the polydispersity and the refractive index of Dow Latex 642-6. The experimental intensity curves were compared with computer-calculated Mie scattering curves, for different diameters, width of the size distribution and refractive indices, in order to find ...
F. Robillard, A.J. Patitsas, B.H. Kaye
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Journal of Applied Polymer Science, 2003
AbstractA mathematical model to describe the molecular weight and polydispersity index (Q) in poly(L‐lactide) (PLLA) thermal degradation has been developed. Based on the random chain scission mechanism, effects of temperature and time on the molecular weight and polydispersity index are included in this model.
Hengxing Yu +3 more
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AbstractA mathematical model to describe the molecular weight and polydispersity index (Q) in poly(L‐lactide) (PLLA) thermal degradation has been developed. Based on the random chain scission mechanism, effects of temperature and time on the molecular weight and polydispersity index are included in this model.
Hengxing Yu +3 more
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Journal of Polymer Science: Polymer Chemistry Edition, 1980
AbstractThe Macosko‐Miller approach is used to obtain an expression for the polydispersity index for AA, BB, CC linear step polymerization system in which B and C are the same type of functional group. The dependence of the polydispersity index, as a function of the extent of reaction, on the monomer masses and on the relative reactivities of B and C ...
Ercument Ozizmir, George Odian
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AbstractThe Macosko‐Miller approach is used to obtain an expression for the polydispersity index for AA, BB, CC linear step polymerization system in which B and C are the same type of functional group. The dependence of the polydispersity index, as a function of the extent of reaction, on the monomer masses and on the relative reactivities of B and C ...
Ercument Ozizmir, George Odian
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