Concentration fluctuations in blends of branched and linear polymers to improve the understanding of phase separation
Blends of branched thermosetting and linear thermoplastic polymers are widely used as structural materials in the aerospace industry. The mechanical properties of these materials are largely determined by the extent of phase separation within the blends during cross-linking of the thermoset. However, current methods to predict this process are lacking. As concentration fluctuations form the basis for phase separation, and are therefore a strong indicator of its occurrence, we have created a Monte Carlo model that is capable of predicting concentration fluctuations for blends with various temperatures, compositions and amounts of branched structures. However, to be able to use the model with confidence for industrially-relevant polymer blends, it must first be validated against experimental data for a model system, which neutron scattering is uniquely capable of providing.
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Emma Louise Wood; CLARKE Nigel and GRILLO Isabelle. (2019). Concentration fluctuations in blends of branched and linear polymers to improve the understanding of phase separation. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-1935
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