Morphology, optical properties, and curing behavior of UV-curable acrylate-siloxane polymer blends

2020 ◽  
Vol 85 ◽  
pp. 106412 ◽  
Author(s):  
Forough Zareanshahraki ◽  
Ali Jannesari ◽  
Saeed Rastegar
BioResources ◽  
2013 ◽  
Vol 9 (1) ◽  
Author(s):  
Mojtaba Soltani ◽  
Ramin Veisi ◽  
Ali Asghar Rohani ◽  
Omid Ramzani ◽  
Hamid Reza Naji ◽  
...  

2021 ◽  
Author(s):  
Mengjiao Wu ◽  
Zhen Guo ◽  
Weiye He ◽  
Wei Yuan ◽  
Yulan Chen

Probing bond scission process in a broader force range was realized by embedding mechanochromic rhodamine and mechanochemiluminescent 1,2-dioxetane in polymer blends.


2010 ◽  
Vol 114 (32) ◽  
pp. 10277-10284 ◽  
Author(s):  
Ming-Chung Wu ◽  
Hsueh-Chung Liao ◽  
Yi Chou ◽  
Che-Pu Hsu ◽  
Wei-Che Yen ◽  
...  

2016 ◽  
Vol 846 ◽  
pp. 225-229 ◽  
Author(s):  
N.F.M. Sahapini ◽  
Ahmad Nazib Alias ◽  
Z.M. Zabidi ◽  
Mohd Ashmir Yahya

A Polymer blends compose of Poly (3,4-ethylenedioxythiophene):Poly (styrene sulphonic acid)(PEDOT:PSS) and Polyaniline (PANi) have been prepared using drop casting technique. Optical parameters such as refractive index (n), extinction coefficient (k), reflectance, and optical dielectric were determined in this study. It is found that reflectance spectra increase as the PANi concentration decreases in the sample of small photon energy. The refractive index of the sample shows significant effect with the PEDOT:PSS concentration. As the concentration of PEDOT:PSS increases, the refractive index shows a normal dispersion behavior. Extinction coefficient decrease as the wavelength increase within the range of 300 nm to 350 nm that may contribute to the loss fraction of light due to scattering and the decreasing of absorbance at this range. However, the extinction coefficient increases from 350 nm to the maximum wavelength of 800 nm since the absorbance is also increasing. Both the real and imaginary part of the dielectric constant decreases when the photon energy increases. This revealed that the compositions of PEDOT:PSS influence the optical properties of hybrid PEDOT-PSS:PANi thin film.


2013 ◽  
Vol 834-836 ◽  
pp. 199-202 ◽  
Author(s):  
Ji Lei Chao ◽  
Fu Qiang Chu ◽  
Chang Li Xu ◽  
Hui Wang ◽  
Yu Xin Liu

To improve the added value of lignin, the modified alkali lignin of wheat straw was used to prepare waterborne UV-curable polyurethane. The purpose of this paper is to discuss the properties of the cured films made from the above lignin-based polyurethane. The mechanical and optical properties of the cured films were investigated. Results showed that the tensile storage modulus, tensile loss modulus, and tensile loss factor of the cured film were influenced by the addition of the lignin, which indicated that proper dosage of the lignin could change the micro-phase separation structure and improve the mechanical properties of the product. The addition of the lignin also influenced the gloss and light transmittance of the cured film. On the whole, the lignin-based polyurethane exhibits good mechanical and optical performance if proper proportion of the lignin was added to the product. The study was beneficial for utilizing the lignin in high value products.


2010 ◽  
Vol 87 (11) ◽  
pp. 2411-2415 ◽  
Author(s):  
Dexian Ye ◽  
Pei-I Wang ◽  
Zhuqiu Ye ◽  
Ya Ou ◽  
Rajat Ghoshal ◽  
...  

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3477
Author(s):  
Dexing Zhu ◽  
Jian Zhang ◽  
Qiao Xu ◽  
Yaguo Li

A simple and efficient process for fabricating customized aspheric lenses is reported, in which a stereolithographic 3D printer combined with the meniscus equilibrium post-curing technique is employed. Two kinds of UV-curable resins, DentaClear and HEMA, were used for printing aspheric lenses in our experiments. The printed DentaClear lens featured low surface profile deviation of ~74 μm and showed satisfactory optical imaging resolution of 50.80 lp/mm, i.e., 4.92 μm. The surface roughness of the printed lens with DentaClear was measured to be around 2 nm with AFM. The surface roughness was improved as a result of post-curing, which reduced the ripples on printed lens surfaces. In contrast, the printed HEMA lens exhibited a significant stair-stepping effect with a large surface profile deviation of ~150 μm. The ripples were somewhat apparent even if the printed HEMA lens surface was smoothed by means of post-curing. No sharp image can be obtained with the HEMA lens in the resolution testing. The composition of HEMA resin may be the reason for the relatively poor surface quality and optical properties.


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