Smart Luminescent Hydrogel with Superior Mechanical Performance based on Polymer Networks Embedded with Lanthanide Containing Clay Nanocomposite

Nanoscale ◽  
2021 ◽  
Author(s):  
Bin Li ◽  
Yan Qin ◽  
Zhiqiang Li ◽  
Ying Zhang ◽  
Huanrong Li
Keyword(s):  
Optical Properties ◽  
Mechanical Performance ◽  
Polymer Networks

Due to inherent biocompatibility and unique optical properties, luminescent hydrogels have recently garnered tremendous interest. However, most of the explored luminescent hydrogels cannot well meet the requirements of both sufficient...

Rescaling Approach to Molecular Orientation for NMR and Optical Properties of Polymer Networks

2002 ◽  
Vol 35 (14) ◽  
pp. 5665-5669 ◽  
Author(s):  
M. E. Ries ◽  
M. G. Brereton ◽  
I. M. Ward ◽  
J. I. Cail ◽  
R. F. T. Stepto
Keyword(s):  
Optical Properties ◽  
Molecular Orientation ◽  
Polymer Networks

scholarly journals High-Performance Polymer Dispersed Liquid Crystal Enabled by Uniquely Designed Acrylate Monomer

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1625 ◽  
Author(s):  
Rijeesh Kizhakidathazhath ◽  
Hiroya Nishikawa ◽  
Yasushi Okumura ◽  
Hiroki Higuchi ◽  
Hirotsugu Kikuchi
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Low Voltage ◽  
Polymer Networks ◽  
Mesh Size ◽  
Laser Scanning Microscopy ◽  
Present System ◽  
Driving Voltage ◽  
Acrylate Monomer ◽  
Polymer Dispersed

The widespread electro–optical applications of polymer dispersed liquid crystals (PDLCs) are hampered by their high-driving voltage. Attempts to fabricate PDLC devices with low driving voltage sacrifice other desirable features of PDLCs. There is thus a clear need to develop a method to reduce the driving voltage without diminishing other revolutionary features of PDLCs. Herein, we report a low-voltage driven PDLC system achieved through an elegantly simple and uniquely designed acrylate monomer (A3DA) featuring a benzene moiety with a dodecyl terminal chain. The PDLC films were fabricated by the photopolymerization of mono- and di-functional acrylate monomers (19.2 wt%) mixed in a nematic liquid crystal E7 (80 wt%). The PDLC film with A3DA exhibited an abrupt decline of driving voltage by 75% (0.55 V/μm) with a high contrast ratio (16.82) while maintaining other electro–optical properties almost the same as the reference cell. The response time was adjusted to satisfactory by tuning the monomer concentration while maintaining the voltage significantly low (3 ms for a voltage of 0.98 V/μm). Confocal laser scanning microscopy confirmed the polyhedral foam texture morphology with an average mesh size of approximately 2.6 μm, which is less in comparison with the mesh size of reference PDLC (3.4 μm), yet the A3DA-PDLC showed low switching voltage. Thus, the promoted electro–optical properties are believed to be originated from the unique polymer networks formed by A3DA and its weak anchoring behavior on LCs. The present system with such a huge reduction in driving voltage and enhanced electro–optical performance opens up an excellent way for abundant perspective applications of PDLCs.

Unusual Mechanical Performance of Amphiphilic Crosslinked Polymer Networks

2007 ◽  
Vol 129 (3) ◽  
pp. 506-507 ◽  
Author(s):  
Jinqi Xu ◽  
David A. Bohnsack ◽  
Michael E. Mackay ◽  
Karen L. Wooley
Keyword(s):  
Mechanical Performance ◽  
Polymer Networks ◽  
Crosslinked Polymer

Stress-optical properties of bimodal polymer networks

1993 ◽  
Vol 76 (1) ◽  
pp. 233-240 ◽  
Author(s):  
P. R. Subramanian ◽  
V. Galiatsatos
Keyword(s):  
Optical Properties ◽  
Polymer Networks

scholarly journals Synthesis and Characterization of New Layered Double Hydroxide-Polyolefin Film Nanocomposites with Special Optical Properties

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3580 ◽  
Author(s):  
Fuensanta Monzó ◽  
Ana Caparrós ◽  
Diego Pérez-Pérez ◽  
Alejandro Arribas ◽  
Ramón Pamies
Keyword(s):  
Optical Properties ◽  
Mechanical Performance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Whitening Agent ◽  
Thermoplastic Matrix ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Film Nanocomposites

In this study, we have synthesized new double layered hydroxides to be incorporated to low density polyethylene thermoplastic matrix. These new composites present promising applications as materials to build greenhouses due to the enhancement of their optical properties. A characterization of the modified nanoclay has been performed by means of X-ray fluorescence (XRF), X-ray Diffraction (XRD), Thermogravimetric analysis (TGA), and Fourier-transform infrared spectroscopy (FTIR). We have prepared a series of polyolefin-based films to evaluate the effect of the addition of a whitening agent (disodium 2,2′-((1,1′-biphenyl)-4,4′-diyldivinylene)bis(benzenesulfonate)), the modified hydrotalcite-like material and a commercial dispersant. The rheological and mechanical characterization of the films have proved that the inclusion of the modified-layered double hydroxides (LDHs) do not substantially affect the processing and mechanical performance of the material. On the other hand, optical properties of the nanocomposites are improved by reducing the transmission in the UVA region.

Sign in / Sign up

Export Citation Format

Share Document