On the Role of Drop Break Up for Coalescence Processes and Morphology Development in Polymer Blends under Shear

2005 ◽  
Vol 38 (13) ◽  
pp. 5826-5833 ◽  
Author(s):  
Verena E. Ziegler ◽  
Bernhard A. Wolf
Keyword(s):  
Polymer Blends ◽  
Morphology Development ◽  
Break Up

Morphology Development Associated With Polymer Blends

2004 ◽  
Vol 856 ◽  
Author(s):  
Tomoko Hashida ◽  
Ying Hua ◽  
Shaw Ling Hsu ◽  
Charles W. Paul
Keyword(s):  
Polymer Blends ◽  
Degree Of Crystallinity ◽  
Similar Chemical ◽  
Crystallizable Polymer ◽  
Morphology Development ◽  
Morphological Differences ◽  
Chemical Distribution ◽  
Poly Propylene ◽  
First Time

ABSTRACTMorphology development of crystallizable polymer blends has been investigated using optical microscopy, thermal analysis, and vibrational spectroscopy. The blends studied involve crystallizable polyesters of poly(hexamethylene adipate) (PHMA) and poly(hexamethylene sebacate) (PHMS) and non-crystallizable poly(propylene glycol) (PPG). Although these polyesters possess similar chemical structure, they exhibit different phase behavior. Ternary blends including a high glass transition temperature (Tg) component were also studied. Crystallization kinetics in these blends was obtained utilizing Fourier transform infrared spectroscopy. Micro-Raman spectroscopy capable of achieving high spatial resolution (1 μm2) revealed detailed morphological differences in the phase-separated structures. This technique made possible for the first time characterization of the chemical composition of the blends and distribution of crystallites. The role of the third relative immobile component significantly changed both chemical distribution and the degree of crystallinity.

scholarly journals In Situ Generation of Green Hybrid Nanofibrillar Polymer-Polymer Composites—A Novel Approach to the Triple Shape Memory Polymer Formation

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1900
Author(s):  
Ramin Hosseinnezhad ◽  
Iurii Vozniak ◽  
Fahmi Zaïri
Keyword(s):  
Polymer Blends ◽  
Shape Memory ◽  
Shape Memory Polymer ◽  
Cellulose Nanofibers ◽  
Polymeric Materials ◽  
Novel Approach ◽  
Phase Transition Temperatures ◽  
Triple Shape Memory

The paper discusses the possibility of using in situ generated hybrid polymer-polymer nanocomposites as polymeric materials with triple shape memory, which, unlike conventional polymer blends with triple shape memory, are characterized by fully separated phase transition temperatures and strongest bonding between the polymer blends phase interfaces which are critical to the shape fixing and recovery. This was demonstrated using the three-component system polylactide/polybutylene adipateterephthalate/cellulose nanofibers (PLA/PBAT/CNFs). The role of in situ generated PBAT nanofibers and CNFs in the formation of efficient physical crosslinks at PLA-PBAT, PLA-CNF and PBAT-CNF interfaces and the effect of CNFs on the PBAT fibrillation and crystallization processes were elucidated. The in situ generated composites showed drastically higher values of strain recovery ratios, strain fixity ratios, faster recovery rate and better mechanical properties compared to the blend.

The role of different phospholipids on tear break-up time using a model eye

2002 ◽  
Vol 25 (1) ◽  
pp. 55-60 ◽  
Author(s):  
Karl Peters ◽  
Thomas J. Millar
Keyword(s):  
Break Up

Role of Interface Rheology in Altering the Onset of Co-Continuity in Nanoparticle-Filled Polymer Blends

2011 ◽  
Vol 296 (7) ◽  
pp. 658-665 ◽  
Author(s):  
Giovanni Filippone ◽  
Giovanni Romeo ◽  
Domenico Acierno
Keyword(s):  
Polymer Blends ◽  
Filled Polymer
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