Browsing by Author "Kumar, Sanat K."
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Crystallization Kinetics and Nanoparticle Ordering in Semicrystalline Polymer Nanocomposites
Altorbaq, Abdullah S.; Krauskopf, Alejandro A.; Wen, Xiangning; Pérez Camargo, Ricardo Arpad; Su, Yunlan; Wang, Dujin; Müller Sánchez, Alejandro Jesús; Kumar, Sanat K. (Elsevier, 2022-03-13)
There has been considerable interest in the nucleation and crystallization of polymers in the presence of nanoparticles (NPs, or nanofillers in general, NFs). Most of the extensive work in this area has focused on anisotropic, ... -
Direct Relationship between Dispersion and Crystallization Behavior in Poly(ethylene oxide)/Poly(ethylene glycol)-g-Silica Nanocomposites
Wen, Xiangning; Su, Yunlan; Liu, Guoming; Li, Shaofan; Müller Sánchez, Alejandro Jesús; Kumar, Sanat K.; Wang, Dujin (American Chemical Society, 2021-02-08)
The inclusion of polymer-grafted nanoparticles (PGNPs) can impart various functional properties to polymer nanocomposites (PNCs). For semicrystalline polymers, we can control the spatial dispersion of PGNPs and presumably ... -
Mechanisms of Directional Polymer Crystallization
Krauskopf, Alejandro A.; Jiménez, Andrew M.; Lewis, Elizabeth A.; Vogt, Bryan D.; Müller Sánchez, Alejandro Jesús; Kumar, Sanat K. (American Physical Society, 2020-07-21)
Zone annealing, a directional crystallization technique originally used for the purification of semiconductors, is applied here to crystalline polymers. Tight control over the final lamellar orientation and thickness of ... -
Network dynamics in nanofilled polymers
Baeza, Guilhem P; Dessi, Claudia; Costanzo, Salvatore; Zhao, Dan; Gong, Shushan; Alegría Loinaz, Angel María; Colb, Ralph H.; Rubinstein, Michael; Vlassopoulos, Dimitris; Kumar, Sanat K. (Nature Publishing, 2016-04-25)
It is well accepted that adding nanoparticles (NPs) to polymer melts can result in significant property improvements. Here we focus on the causes of mechanical reinforcement and present rheological measurements on favourably ... -
Supernucleation Dominates Lignin/Poly(ethylene oxide) Crystallization Kinetics
Taverna, María E.; Altorbaq, Abdullah S.; Kumar, Sanat K.; Olmedo Martínez, Jorge L.; Busatto, Carlos A.; Zubitur Soroa, María Manuela; Mugica Iztueta, Miren Agurtzane; Nicolau, Veronica V.; Estenoz, Diana A.; Müller Sánchez, Alejandro Jesús(American Chemical Society, 2022)
The effect of lignin nanoparticles (LNPs) on the crystallization kinetics of poly(ethylene oxide) (PEO) is examined. Lignin from spruce and ionic isolation was used to prepare LNPs with a number-averaged diameter of 85 nm ...