Correlated and cooperative motions in segmental relaxation: Influence of constitutive unit weight and intermolecular interactions. Rijal, B., Soto Puente, J. A., Atawa, B., Delbreilh, L., Fatyeyeva, K., Saiter, A., & Dargent, E. Physical Review E, 94(6):062502, 2016.
Correlated and cooperative motions in segmental relaxation: Influence of constitutive unit weight and intermolecular interactions [link]Paper  doi  abstract   bibtex   
This work clarifies the notion of correlated and cooperative motions appearing during the α-relaxation process through the role of the molecular weight of the constitutive units and of the interchain dipolar interactions. By studying amorphous copolymers of poly(ethylene-co-vinyl acetate) with different vinyl acetate contents, we show that the correlated motions are not sensitive to the interchain dipolar interactions, in contrast to the cooperative motions, which increase with a strengthening of the intermolecular interactions for this sample family. Concerning the influence of the molecular weight m0, the notion of “correlated motions” seems to be equivalent to the notion of “cooperative motions” only for low m0 systems.
@article{rijal_correlated_2016,
	title = {Correlated and cooperative motions in segmental relaxation: {Influence} of constitutive unit weight and intermolecular interactions},
	volume = {94},
	shorttitle = {Correlated and cooperative motions in segmental relaxation},
	url = {http://link.aps.org/doi/10.1103/PhysRevE.94.062502},
	doi = {10.1103/PhysRevE.94.062502},
	abstract = {This work clarifies the notion of correlated and cooperative motions appearing during the α-relaxation process through the role of the molecular weight of the constitutive units and of the interchain dipolar interactions. By studying amorphous copolymers of poly(ethylene-co-vinyl acetate) with different vinyl acetate contents, we show that the correlated motions are not sensitive to the interchain dipolar interactions, in contrast to the cooperative motions, which increase with a strengthening of the intermolecular interactions for this sample family. Concerning the influence of the molecular weight m0, the notion of “correlated motions” seems to be equivalent to the notion of “cooperative motions” only for low m0 systems.},
	number = {6},
	urldate = {2017-03-17},
	journal = {Physical Review E},
	author = {Rijal, Bidur and Soto Puente, Jorge Arturo and Atawa, Bienvenu and Delbreilh, Laurent and Fatyeyeva, Kateryna and Saiter, Allisson and Dargent, Eric},
	year = {2016},
	pages = {062502}
}

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