A facile method to prepare fluorine-free film transfer paper with excellent oil resistance

Cellulose ◽  
2021 ◽  
Author(s):  
Jie Sheng ◽  
Tong Chen ◽  
Rendang Yang
Keyword(s):  
Oil Resistance ◽  
Free Film ◽  
Film Transfer

scholarly journals Physicochemical Properties and Biological Activity of Active Films Based on Corn Peptide Incorporated Carboxymethyl Chitosan

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 604
Author(s):  
Liyan Wang ◽  
Liang Lei ◽  
Kang Wan ◽  
Yuan Fu ◽  
Hewen Hu
Keyword(s):  
Antioxidant Activity ◽  
Physicochemical Properties ◽  
Food Packaging ◽  
Biological Activities ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Carboxymethyl Chitosan ◽  
Vapor Permeability ◽  
Zone Method ◽  
Oil Resistance

Active films based on carboxymethyl chitosan incorporated corn peptide were developed, and the effect of the concentration of corn peptide on films was evaluated. Physicochemical properties of the films, including thickness, opacity, moisture content, color, mechanical properties, water vapor permeability, and oil resistance, were measured. Biological activities of the films, including the antioxidant and antibacterial activities, were characterized in terms of 2, 2-diphenyl-1-picrylhydrazyl free radical scavenging activity, reducing power, the total antioxidant activity, and the filter disc inhibition zone method. The results indicated that the incorporation of corn peptide caused interactions between carboxymethyl chitosan and corn peptide in Maillard reaction and gave rise to the films light yellow appearance. Compared with the Control, the degree of glycosylation, browning intensity, thickness, opacity, tensile strength, antioxidant activity, and antibacterial activity of films were increased, but the elongation, vapor permeability, and oil resistance of films were decreased. The films based on corn peptide and carboxymethyl chitosan can potentially be applied to food packaging.

Investigation of Polymer Relaxation after Deformation by Positron Annihilation

1992 ◽  
Vol 247 ◽  
Author(s):  
Sergey A. Tishin ◽  
Mihail I. Tsapovestsky ◽  
Vladimir A. Tishin ◽  
Vladimir N. Kestelman
Keyword(s):  
Positron Annihilation ◽  
Angular Correlation ◽  
Life Time ◽  
Slow Relaxation ◽  
Dielectric Losses ◽  
Free Film ◽  
Axial Tension ◽  
Polymer Relaxation ◽  
Sample Density ◽  
Nonmonotonic Change

ABSTRACTThe relaxation of polyimid films after the axial tension has been investigated by measuring life-time of positrons and angular correlation of annihilation photons. The nonmonotonic change of mean life-time while relaxing the free film has been found. Two range of changes of positron-sensitive properties can be seen: “rapid” relaxation for 4–5 hours (characterized by reducing life-time of short-lived component) and “slow” relaxation (characterized by reducing the intensity of long-lived component). The results of this investigation have been compared with those of measuring of sample density and dielectric losses. The possible explanations and the- changes of mechanizms of relaxation with the conditions of deformation and “the rest” of polymers are analyzed.

Assisted alignment of conjugated polymers in floating film transfer method using polymer blend

2021 ◽  
pp. 138814
Author(s):  
Heriyanto Syafutra ◽  
Manish Pandey ◽  
Nikita Kumari ◽  
Shyam S. Pandey ◽  
Hiroaki Benten ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Polymer Blend ◽  
Film Transfer ◽  
Transfer Method

Preferred rates in helium film transfer

1966 ◽  
Vol 20 (2) ◽  
pp. 126-128 ◽  
Author(s):  
R.F. Harris-Lowe ◽  
C.F. Mate ◽  
K.L. McCloud ◽  
J.C. Daunt
Keyword(s):  
Helium Film ◽  
Film Transfer

scholarly journals Properties of amphiphilic oligonucleotide films at the air/water interface and after film transfer

2013 ◽  
Vol 111 ◽  
pp. 439-445 ◽  
Author(s):  
R. Keller ◽  
M. Kwak ◽  
J.W. de Vries ◽  
C. Sawaryn ◽  
J. Wang ◽  
...  
Keyword(s):  
Water Interface ◽  
Air Water Interface ◽  
Film Transfer

Macroscopic self ordering of solution processible poly(3,3″′-dialkylquaterthiophene) by floating film transfer method

2013 ◽  
Vol 114 (5) ◽  
pp. 054309 ◽  
Author(s):  
Rajiv K. Pandey ◽  
Wataru Takashima ◽  
Shuichi Nagamatsu ◽  
Arnaud Dauendorffer ◽  
K. Kaneto ◽  
...  
Keyword(s):  
Film Transfer ◽  
Transfer Method

Novel modification of styrene butadiene rubber/acrylic rubber blends to improve mechanical, dynamic mechanical, and swelling behavior for oil sealing applications

2021 ◽  
pp. 096739112110313
Author(s):  
Ahmed Abdel-Hakim ◽  
Soma A el-Mogy ◽  
Ahmed I Abou-Kandil
Keyword(s):  
Mechanical Properties ◽  
Crosslink Density ◽  
Physical And Mechanical Properties ◽  
Dynamic Mechanical Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Dynamic Mechanical ◽  
Oil Resistance ◽  
Styrene Butadiene

Blending of rubber is an important route to modify properties of individual elastomeric components in order to obtain optimum chemical, physical, and mechanical properties. In this study, a novel modification of styrene butadiene rubber (SBR) is made by employing acrylic rubber (ACM) to obtain blends of outstanding mechanical, dynamic, and oil resistance properties. In order to achieve those properties, we used a unique vulcanizing system that improves the crosslink density between both polymers and enhances the dynamic mechanical properties as well as its resistance to both motor and break oils. Static mechanical measurements, tensile strength, elongation at break, and hardness are improved together with dynamic mechanical properties investigated using dynamic mechanical analyses. We also proposed a mechanism for the improvement of crosslink density and consequently oil resistance properties. This opens new opportunities for using SBR/ACM blends in oil sealing applications that requires rigorous mechanical and dynamic mechanical properties.

Sol-Gel Derived Titaniajormosil Composite Thin Films For Optical Waveguide Applications

1999 ◽  
Vol 576 ◽  
Author(s):  
Wenxiu Que ◽  
Y. Zhou ◽  
Y. L. Lam ◽  
Y. C. Chan ◽  
S. D. Cheng ◽  
...  
Keyword(s):  
Sol Gel ◽  
Single Layer ◽  
Titanium Content ◽  
Gravimetric Analysis ◽  
Force Microscopy ◽  
Free Film ◽  
Free Silica ◽  
Atomic Force ◽  
Bonding Properties ◽  
Single Layer Film

ABSTRACTWe report the preparation of sol-gel waveguide films based on a newly developed recipe to incorporate organic molecules into the inorganic sol-gel glass matrix. The film was derived from a sol that has a higher titanium content in an organically modified silane (ORMOSIL), namely, ÿ-Glycidoxypropyltrimethoxysilane. We have shown that using spin-coating and low temperature baking, a single coating layer can have a thickness of more than 1.5 μm. When such a single layer film is deposited on a microscope glass slide or a piece of silicon with a buffercladding layer, it is able to support the guiding of optical waves. We have characterized the film using scanning electron microscopy, atomic force microscopy, X-ray diffractometry, thermal gravimetric analysis. differential thermal analysis and Fourier transform infrared spectroscopy and have studied the properties of the waveguide film, including the microstructural properties. the chemical bonding properties, and the optical properties. Based on these experimental results, we found that a heat-treatment at a temperature slightly below 200°C is necessary to attain a dense pore-free film. It has also been noted that a purely inorganic and crack-free silica-titania film can be obtained after baking the titania-ORMOSIL composite film at 500°C or higher.

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