Journal ArticleDOI
Synthesis and barrier properties of poly(ε‐caprolactone)‐layered silicate nanocomposites
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TLDR
In this article, a polymer-ceramic nanocomposite was synthesized consisting of well-dispersed, two-dimensional layers of an organically modified mica-type silicate (MTS) within a degradable poly(e-caprolactone) matrix.Abstract:
A new polymer-ceramic nanocomposite has been synthesized consisting of well-dispersed, two-dimensional layers of an organically modified mica-type silicate (MTS) within a degradable poly(e-caprolactone) matrix. A protonated amino acid derivative of MTS was used to promote delamination/dispersion of the host layers and initiate ring-opening polymerization of e-caprolactone monomer, resulting in poly(e-caprolactone) chains that are ionically bound to the silicate layers. The polymer chains can be released from the silicate surface by a reverse ion-exchange reaction and were shown to be spectroscopically similar to pure poly(e-caprolactone). Thick films of the polymer nanocomposite exhibit a significant reduction in water vapor permeability that shows a linear dependence on silicate content. The permeability of nanocomposite containing as low as 4.8% silicate by volume was reduced by nearly an order of magnitude compared to pure poly(e-caprolactone)read more
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Journal ArticleDOI
Effect of spatial restrictions at the nanometer scale on structuring in glassy and crystalline polymers
TL;DR: In this paper, the effect of nanometer-scale spatial restrictions on phase transitions and crystallizability of polymers is analyzed, and it is shown that, as the volume of the polymer phase is decreased and its linear sizes take values on the order of 50 nm or less, the fundamental properties of the polymers change abruptly.
Journal ArticleDOI
Orientation of montmorillonite clay in dicyclopentadiene/organically modified clay dispersions and nanocomposites
TL;DR: In this article, high-delaminated dispersions of the organically modified clay I-28 (Nanocor, Inc.) in liquid dicyclopentadiene (DCPD) were prepared.
Journal ArticleDOI
Effects of ultraviolet radiation and condensation on static and dynamic compression behavior of neat and nanoclay infused epoxy/glass composites
TL;DR: In this article, the effects of ultraviolet radiation and condensation on the static and dynamic compressive properties of composites with and without nanoclay were investigated, and the results showed an increase in strength and modulus with increase in strain rate and load loading.
Journal ArticleDOI
On the strategies for incorporating nanosilica aqueous dispersion in the synthesis of waterborne polyurethane/silica nanocomposites: Effects on morphology and properties
Pablo Jose Peruzzo,Pablo Sebastián Anbinder,Francisco Martín Pardini,Oscar Ricardo Pardini,Oscar Ricardo Pardini,Tomás S. Plivelic,Javier Ignacio Amalvy,Javier Ignacio Amalvy +7 more
TL;DR: In this article, the synthesis of waterborne polyurethane/nanosilica nanocomposites by using two different strategies is presented, starting from a vinyl terminated PUP based on isophorone diisocyanate and polypropylene glycol, and varying the nanoparticles content.
Book ChapterDOI
Natural Fiber Welding: Ionic Liquid Facilitated Biopolymer Mobilization and Reorganization
Luke M. Haverhals,Luke M. Haverhals,Matthew P. Foley,Matthew P. Foley,E. Kate Brown,E. Kate Brown,Douglas M. Fox,Douglas M. Fox,Hugh C. De Long,Hugh C. De Long,Paul C. Trulove,Paul C. Trulove +11 more