Optical material having high refractive index, low specific gravity, and excellent impact resistance prepared by unsaturated nitrile-polyfunctional methacrylate-styrenic monomer copolymerization

1997 ◽  
Vol 65 (11) ◽  
pp. 2247-2255 ◽  
Author(s):  
Tatsuhito Matsuda ◽  
Yasuaki Funae ◽  
Masahiro Yoshida ◽  
Tetsuya Yamamoto ◽  
Tsuguo Takaya
Keyword(s):  
Refractive Index ◽  
Specific Gravity ◽  
Impact Resistance ◽  
High Refractive Index ◽  
Optical Material ◽  
Unsaturated Nitrile

Optical material of high refractive index resin composed of sulfur-containing aromatic methacrylates

2000 ◽  
Vol 76 (1) ◽  
pp. 50-54 ◽  
Author(s):  
Tatsuhito Matsuda ◽  
Yasuaki Funae ◽  
Masahiro Yoshida ◽  
Tetsuya Yamamoto ◽  
Tsuguo Takaya
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Optical Material ◽  
Sulfur Containing

scholarly journals Novel Nanocomposite Optical Plastics: Dispersion of Titanium in Polyacrylates

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Gunjan Suri ◽  
Mukti Tyagi ◽  
Geetha Seshadri ◽  
Gurcharan Lal Verma ◽  
Rakesh Kumar Khandal
Keyword(s):  
Refractive Index ◽  
Impact Resistance ◽  
Polymeric Materials ◽  
High Refractive Index ◽  
Metal Compounds ◽  
The Matrix ◽  
In Situ Formation ◽  
Optical Applications ◽  
Free Material

Polyacrylates have become the preferred materials for optical applications replacing the conventionally used glass due to their superior optical clarity. The major disadvantage with polyacrylates is their low (1.40–1.50) refractive index besides their poor impact resistance. The improvements in refractive index as well as mechanical properties can be achieved by way of incorporation of metals or metal compounds in the matrix. A novel methodology for the incorporation of high refractive index metals into low refractive index polymeric materials to improve the refractive index and impact resistance of the latter has been developed. With the in-situ formation of nanoparticles ofTiO2, the refractive index of polyacrylates improved from 1.45 to 1.53 and the Abbe number increased from 40 to 57. One of the interesting dimension of this study pertains to the possibility of tailor-making of the two key optical properties of materials by way of varying the amount ofTiO2being formed in-situ. Thermal stability and impact resistance of nano dispersed (4.3% by wt. of Ti) polyacrylates are found to be better than the neat polyacrylates. Moreover,TiO2-containing polyacrylate is of light weight. TEM, SEM, and IR analysis confirms the in-situ formation of nanoparticles ofTiO2. Gamma irradiation has been used as an eco-friendly technique for polymerization. The developed compositions can be cast polymerized into clear and bubble free material for optical applications.

Accelerated Discovery of High-Refractive-Index Polyimides via First-Principles Molecular Modeling, Virtual High-Throughput Screening, and Data Mining

2019 ◽  
Author(s):  
Mohammad Atif Faiz Afzal ◽  
Mojtaba Haghighatlari ◽  
Sai Prasad Ganesh ◽  
Chong Cheng ◽  
Johannes Hachmann
Keyword(s):  
Data Mining ◽  
Refractive Index ◽  
High Throughput ◽  
First Principles ◽  
High Throughput Screening ◽  
Large Scale ◽  
Computational Study ◽  
High Refractive Index ◽  
Structural Features ◽  
Learning Program

<div>We present a high-throughput computational study to identify novel polyimides (PIs) with exceptional refractive index (RI) values for use as optic or optoelectronic materials. Our study utilizes an RI prediction protocol based on a combination of first-principles and data modeling developed in previous work, which we employ on a large-scale PI candidate library generated with the ChemLG code. We deploy the virtual screening software ChemHTPS to automate the assessment of this extensive pool of PI structures in order to determine the performance potential of each candidate. This rapid and efficient approach yields a number of highly promising leads compounds. Using the data mining and machine learning program package ChemML, we analyze the top candidates with respect to prevalent structural features and feature combinations that distinguish them from less promising ones. In particular, we explore the utility of various strategies that introduce highly polarizable moieties into the PI backbone to increase its RI yield. The derived insights provide a foundation for rational and targeted design that goes beyond traditional trial-and-error searches.</div>

Preparation and Characterization of Polyvinylidene Fluoride/ZrO2-TiO2 Optical Film with Wide Band Gap and High Refractive Index

2013 ◽  
Vol 28 (6) ◽  
pp. 671-676 ◽  
Author(s):  
Yu-Qing ZHANG ◽  
Li-Li ZHAO ◽  
Shi-Long XU ◽  
Chao ZHANG ◽  
Xiao-Ying CHEN ◽  
...  
Keyword(s):  
Refractive Index ◽  
Band Gap ◽  
Polyvinylidene Fluoride ◽  
Wide Band ◽  
High Refractive Index ◽  
Wide Band Gap ◽  
Optical Film

Quality Control Parameters of Mandukarni Syrup - A classical memory enhancing dosage form

2017 ◽  
Vol 2 (4) ◽  
Author(s):  
Almas Tarannum ◽  
Prathviraj Puranik ◽  
Suma V. Mallya
Keyword(s):  
Quality Control ◽  
Refractive Index ◽  
Specific Gravity ◽  
Dosage Form ◽  
Reducing Sugar ◽  
Standard Protocol ◽  
Direct Impact ◽  
Control Parameters ◽  
Quality Control Parameters ◽  
Memory Enhancing

Ayurveda is the healing medicine. Dosha, Dhatu, Mala and Agni play important role in maintaining health of a person, but without equilibrium of Atma, Indriya and Manas they are helpless. Manas is one entity which is the controller of health. There are several herbs which have direct impact on Manas, among them Mandukaparni is one. Swarasa of Mandukaparni is highly effective, but it is not easily available for children. This study is intended to make Syrup form of Mandukaparni and evaluate its pharmacognostical parameters. According to the methodology refractive index, total solids, specific gravity, reducing and non Reducing sugar and HPTLC parameters were assessed. The results were found to be genuine fulfilling the standard protocol. This study is under taken to evaluate the pharmacognostic properties of Mandukaparni syrup.

Three-band perfect absorber with high refractive index sensing based on active tunable Dirac semimetal

2021 ◽  
Author(s):  
Zhiyou Li ◽  
Zao Yi ◽  
Tinting Liu ◽  
Li Liu ◽  
Xifang Chen ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Gold Layer ◽  
Perfect Absorber ◽  
Refractive Index Sensing ◽  
Dirac Semimetal

In this paper, we designed a three-band narrowband perfect absorber based on Bulk Dirac semimetallic (BDS) metamaterials. The absorber consists of a hollow Dirac semimetallic layer above, a gold layer...

Oxa-Michael polyaddition of vinylsulfonylethanol for aliphatic polyethersulfones

2021 ◽  
Author(s):  
Nicole Ziegenbalg ◽  
Ruth Lohwasser ◽  
Giovanni D’Andola ◽  
Torben Adermann ◽  
Johannes Christopher Brendel
Keyword(s):  
Refractive Index ◽  
High Temperature ◽  
Flame Retardant ◽  
Chemical Resistance ◽  
High Refractive Index ◽  
Industrial Applications ◽  
Interesting Class ◽  
The Common ◽  
Flame Retardant Properties

Polyethersulfones are an interesting class of polymers for industrial applications due to their unusual properties such as a high refractive index, flame-retardant properties, high temperature and chemical resistance. The common...

Sign in / Sign up

Export Citation Format

Share Document