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pro vyhledávání: '"Yvonne A. Akpalu"'
Autor:
Yvonne A. Akpalu
Publikováno v:
Polymer Reviews. 50:1-13
Knowledge and understanding from scattering provides a scientific basis of control of polymer properties. This understanding has fueled technological advances in synthetic polymers that have revolutionized our daily lives. This issue of Polymer Revie
Publikováno v:
Polymer. 50:4656-4670
With the ultimate goal to design renewable polymer nanocomposites with optimal mechanical properties, this study reports an investigation of structure–property relationships for a model system – silica/ poly(3-hydroxybutyrate-co-3-hydroxyhexanoat
Publikováno v:
Industrial & Engineering Chemistry Research. 48:6137-6144
In this work, we present an optimization-based methodology to identify network structure−process relationships in polymeric materials, to provide a robust understanding of how processing conditions...
Publikováno v:
Polymer Composites. 30:559-568
In this article, we present some key results that demonstrate the useful application of light scattering to characterize the dispersion of nanoparticles in polymer matrix, using polyethylene nanocomposite as an example. Our results show that the disp
Autor:
Ping Peng, Yvonne A. Akpalu
Publikováno v:
Materials and Manufacturing Processes. 23:269-276
Small-angle light scattering (SALS) was used to determine the binary interaction parameter χ in a molten blend of linear polyethylene (LPE, M w = 52 kg/mol, PDI = 2.9) and linear low-density polyethylenes (LLDPEs) based on homogeneous ethylene-1-but
Publikováno v:
Journal of Applied Polymer Science. 109:2259-2268
The influence of cooling rates on the thermal behavior and solid-state morphologies of polyhydroxyalkanoates have been investigated. The thermal behavior was studied by differential scanning calorimetry (DSC). The crystal structures (∼ A), lamellar
Autor:
Yvonne A. Akpalu, Zhicheng Xiao
Publikováno v:
Polymer. 48:5388-5397
Small angle light scattering has been used to probe structure formation during isothermal crystallization of an ethylene-1-hexene copolymer (EH064, M{sub w} = 70,000 g/mol, {rho} = 0.900 g/cm{sup 3}, M{sub w}/M{sub n}{approx} 2, 6.4 mol% hexene). It
Autor:
Yvonne A. Akpalu, Christopher Shogbon, Haifeng Zhang, Brian C. Benicewicz, Jean-Luc Brousseau
Publikováno v:
Macromolecules. 39:9409-9418
Static light scattering has been used for the first time to obtain the molecular parameters and to study the chain conformation of a previously synthesized m-polybenzimidazole (m-PBI) sample in N,N-dimethylacetamide (DMAc) with 4% (g/mL) LiCl. A weig
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 44:1084-1095
Small-angle light scattering (SALS) measurements were used to study the structure of titanium dioxide (TiO2)/low-density polyethylene (LDPE) nanocomposites. The results showed that the scattering from LDPE crystalline structures and the scattering fr
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 43:488-497
The role of TiO2 nanoparticle surfaces in affecting the crystalline structure of low-density polyethylene (LDPE) has been investigated by varying the nanoparticle surface from hydrophilic (as-received) to less hydrophilic (dried) or more hydrophilic