Relaxation-enhanced polymer nanocomposites induced by bound polymer loops on the particle surfaces.

ABSTRACT: Polymer nanocomposites (PNCs) benefit from the enhanced properties originating from the synergistic effects of nanoparticles (NPs) and a polymer matrix. However, the incorporation of NPs slows PNC relaxation, and particularly at high-particle-loading, the PNC melts become non-flowing because the interfacially adsorbed polymers bridge the particles, generating a kinetically quasi-permanent particle network. Herein, by introduction of bound polymer loops on the NP surfaces, we molecularly design a relaxation-enhanced PNC, where interfacial polymers adhering to the NP surfaces freely relaxed, enabling formation of a dynamic, loose particle network that facilitates flow of the PNC melts. The resultant molten high-NP-loading composites maintain fluid-like and low-viscosity dynamics, while the c

SUBMITTER: Xu Q 

PROVIDER: S-EPMC12603027 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature