Stimuli-responsive, mechanically-adaptive polymer nanocomposites
By L. Hsu, Christoph Weder, S. Rowan. 2011
145 citations recorded by the source corpus.
A new series of biomimetic stimuli-responsive nanocomposites, which change their mechanical properties upon exposure to physiological conditions, was prepared and investigated. The materials were produced by introducing percolating networks of cellulose nanofibers or “whiskers” derived from tunicates into poly(vinyl acetate) (PVAc), poly(butyl methacrylate) (PBMA), and blends of these polymers, with the objective of determining how the hydrophobicity and glass-transition temperature (Tg) of the polymer matrix affect the water-induced mechanically dynamic behavior. Below the Tg (∼60−70 °C), the incorporation of whiskers (15.1−16.5% v/v) modestly increased the tensile storage moduli (E′) of the neat polymers from 0.6 to 3.8 GPa (PBMA) and from 2 to 5.2 GPa (PVAc). The reinforcement was much more dramatic above Tg, where E′ increased from 1.2 to 690 MPa (PVAc) and ∼1 MPa to 1.1 GPa (PBMA). Upon exposure to physiological conditions (immersion in artificial cerebrospinal fluid, ACSF, at 37 °C) all materials di...
Subfields: Biomaterials, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/aa4807f03af027699ef7a192db26f8b567c3e2a1
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In Biomaterials
In Polymers and Plastics
Citations in the corpus
- Tailoring the yield and characteristics of wood cellulose nanocrystals (CNC) using concentrated acid hydrolysis (2015, background): “…University of Wisconsin, Madison, WI, USA applications include lightweight and mechanically adaptive nanocomposites (Capadona et al. 2008; Hsu et al. 2011; Xu et al. 2014), solar cells (Zhou et al. 2013), photonics (Kelly et al. 2013), light-healable supramolecular composites (Biyani et…”
- Development of a stimuli-responsive polymer nanocomposite toward biologically optimized, MEMS-based neural probes (2011, methodology): “Using the sea cucumber dermis behavior and mechanism as a model, we have recently developed a polymer nanocomposite with switchable stiffness [7, 8].”