Rheological measurement has been a preferred approach to the characterization of the structure and phase behaviors for multi-component/multi-phase polymer systems, due to its sensitive response to the changes of struc...Rheological measurement has been a preferred approach to the characterization of the structure and phase behaviors for multi-component/multi-phase polymer systems, due to its sensitive response to the changes of structure for these heterogeneous polymers. In the present article, recent progresses in the studies on rheology for heterogeneous polymer systems including phase-separated polymeric blends and block copolymers are reviewed, mainly depending on the results by the authors＇ research group. By means of rheological measurements, not only some new fingerprints responsible for the evolution of morphology and structure concerning these polymer systems are obtained, also the corresponding results are significant for design and preparation of novel polymeric structural materials and functional materials.展开更多
The dynamic rheological measurements have been a preferred approach to the characterization of the structure and properties for multi-component or multi-phase polymer systems,due to its sensitive response to changes o...The dynamic rheological measurements have been a preferred approach to the characterization of the structure and properties for multi-component or multi-phase polymer systems,due to its sensitive response to changes of structure for these heterogeneous polymers.In the present article,recent progresses in the studies on dynamic rheology for heterogeneous polymer systems including polymeric composites filled with inorganic particles,thermo-oxidized polyolefins,phase- separated polymeric blends and functional polymers with the scaling and percolation behavior are reviewed,mainly depending on the results by the authors' group.By means of rheological measurements,not only some new fingerprints responsible for the evolution of morphology and structure concerning these polymer systems are obtained,the corresponding results are also significant for the design and preparation of novel polymer-based composites and functional materials.展开更多
Rheological measurement has been an effective method to characterize the structure and properties for multiphase/multi-component polymers,owing to its sensitivity to the structure change of hetero-geneous systems.In t...Rheological measurement has been an effective method to characterize the structure and properties for multiphase/multi-component polymers,owing to its sensitivity to the structure change of hetero-geneous systems.In this article,recent progress in the studies on the morphology/structure and rheological properties of heterogeneous systems is summarized,mainly reporting the findings of the authors and their collaborators,involving the correlation between the morphology and viscoelastic relaxation of LCST-type polymer blends,the microstructure and linear/nonlinear viscoelastic behavior of block copolymers,time scaling of shear-induced crystallization and rheological response of poly-olefins,and the relationship between the structure/properties and rheological behavior of filled polymer blends.It is suggested that a thorough understanding of the characteristic rheological response to the morphology/structure evolution of multiphase/multi-component polymers facilitates researchers’op-timizing the morphology/structure and ultimate mechanical properties of polymer materials.展开更多
基金This work was supported by the Special Funds for Major Stale Basic Research Projects (No. 2005CB623802) National Natural Science Foundation of China (No. 50373037).
文摘Rheological measurement has been a preferred approach to the characterization of the structure and phase behaviors for multi-component/multi-phase polymer systems, due to its sensitive response to the changes of structure for these heterogeneous polymers. In the present article, recent progresses in the studies on rheology for heterogeneous polymer systems including phase-separated polymeric blends and block copolymers are reviewed, mainly depending on the results by the authors＇ research group. By means of rheological measurements, not only some new fingerprints responsible for the evolution of morphology and structure concerning these polymer systems are obtained, also the corresponding results are significant for design and preparation of novel polymeric structural materials and functional materials.
基金This work was supported by the National Natural Science Foundation for Distinguished Young Scholars(No.50125312)Key Program of National Science Foundation of China(No.50133020)National Natural Science Foundation of China(No.50373037)
文摘The dynamic rheological measurements have been a preferred approach to the characterization of the structure and properties for multi-component or multi-phase polymer systems,due to its sensitive response to changes of structure for these heterogeneous polymers.In the present article,recent progresses in the studies on dynamic rheology for heterogeneous polymer systems including polymeric composites filled with inorganic particles,thermo-oxidized polyolefins,phase- separated polymeric blends and functional polymers with the scaling and percolation behavior are reviewed,mainly depending on the results by the authors' group.By means of rheological measurements,not only some new fingerprints responsible for the evolution of morphology and structure concerning these polymer systems are obtained,the corresponding results are also significant for the design and preparation of novel polymer-based composites and functional materials.
基金Supported by the National Basic Research Program of China(Grant No.2005CB623800)Specialized Research Fund for the Doctoral Program of Higher Education(Grant No.20040335077)
文摘Rheological measurement has been an effective method to characterize the structure and properties for multiphase/multi-component polymers,owing to its sensitivity to the structure change of hetero-geneous systems.In this article,recent progress in the studies on the morphology/structure and rheological properties of heterogeneous systems is summarized,mainly reporting the findings of the authors and their collaborators,involving the correlation between the morphology and viscoelastic relaxation of LCST-type polymer blends,the microstructure and linear/nonlinear viscoelastic behavior of block copolymers,time scaling of shear-induced crystallization and rheological response of poly-olefins,and the relationship between the structure/properties and rheological behavior of filled polymer blends.It is suggested that a thorough understanding of the characteristic rheological response to the morphology/structure evolution of multiphase/multi-component polymers facilitates researchers’op-timizing the morphology/structure and ultimate mechanical properties of polymer materials.
