Fish Oils. VI. The Structure and Properties of Pilchard Oil Films

1936 ◽  
Vol 2 (1) ◽  
pp. 13-40 ◽  
Author(s):  
O. F. Denstedt ◽  
H. N. Brocklesby
Keyword(s):  
British Columbia ◽  
Steam Distillation ◽  
Moisture Absorption ◽  
Linseed Oil ◽  
Fish Oils ◽  
Structure And Properties ◽  
Drying Oils ◽  
Protective Films ◽  
Lower Permeability ◽  
Oil Films

British Columbia pilchard oil dries more rapidly than linseed oil and yields substantial protective films. The films are softer and more tacky than those from linseed oil. They are more permeable to moisture, and show a tendency to become dull and to bloom. These defects can partly be corrected by the use of the proper drier combinations and incorporation of gums but they can be entirely eliminated only by steam distillation of the polymerized oil at high temperatures. The product of this treatment yields films superior to those of other drying oils in hardness, gloss, lower permeability and freedom from yellowing and blooming. The structure and properties of the films are discussed. The nature and distribution of the non-drying components in the film are described. Methods for estimating permeability and moisture absorption of films given and the influence of moisture as the primary agency in film disintegration is emphasized. The nature of yellowing, cissing and blooming, and methods for correcting these defects in pilchard oil are also discussed.

Analysis of the electrical characteristic of linseed oil films exposed to humidity

2009 ◽  
Vol 97 (4) ◽  
pp. 835-839 ◽  
Author(s):  
Lucrezia Palummo ◽  
Andrea Bearzotti
Keyword(s):  
Electrical Characteristic ◽  
Linseed Oil ◽  
Oil Films

scholarly journals The refractive index of a solid film of linseed oil rise in refractive index with age

1937 ◽  
Vol 159 (896) ◽  
pp. 123-133 ◽  
Keyword(s):  
Refractive Index ◽  
Royal Society ◽  
Linseed Oil ◽  
Immersion Method ◽  
The Face ◽  
Solid Film ◽  
Oil Films

In 1926 I contributed a paper to the Royal Society on the rise in refractive index of the linseed oil solid film. The oil had been painted out on the face of a prism of a Herbert Smith refractometer and readings taken first at daily, then at weekly, then at monthly, then at three and six-monthly periods. This film is still on the face of the refractometer which was purchased for the purpose, and Table I contains the readings up to date. It will be noted that while the refractive index (r. i.) is rising more and more slowly it is still rising. It seemed of interest to continue these observations through the centuries by determining the r. i. of the oil films in pictures painted at different dates. This involved using an immersion method and determining the r. i. film on varying the focus, the film being immersed in a liquid of known r. i.

scholarly journals A comparative study on the effects of linseed oil and shellac treatment on the hygroscopicity, dimensional stability, and color changes of Chinese ash wood

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 8085-8092
Author(s):  
Mihaela Liu ◽  
Xinwei Tu ◽  
Xinyou Liu ◽  
Zhihui Wu ◽  
Jiufang Lv ◽  
...  
Keyword(s):  
Dimensional Stability ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
Moisture Absorption ◽  
Linseed Oil ◽  
Morphological Characteristics ◽  
Treated Wood ◽  
Water Repellency ◽  
Wood Products ◽  
Color Changes

Linseed oil and shellac are natural, environmentally friendly materials with good water repellency. They were used to impregnate Chinese ash wood at room temperature (20 °C) using a vacuum-pressure procedure (consisting of three cycles of 0.01 MPa for 1.5 h and atmospheric pressure for 1.5 h) to improve the dimensional stability of wood. The effects of the impregnation treatment on wood color changes, dimensional stability, moisture absorption, and morphological characteristics were evaluated. The linseed oil and shellac treatment improved the dimensional stability of wood. Linseed oil and shellac displayed good permeability in Chinese ash wood, with weight gains of 21.7% and 19.0%, respectively, after impregnation. The swelling coefficients of treated wood in the tangential and radial directions decreased by 15 to 22%, indicating that impregnation improved the dimensional stability of wood. Linseed oil and shellac solidified and occluded the pits within the wood interior to prevent moisture absorption. This method can be used to improve the dimensional stability of a variety of wood products, such as buildings, furniture, and landscape architecture.

scholarly journals Manufacture and Characteristics of Oil-Modified Refined Lacquer for Wood Coatings

2018 ◽  
Author(s):  
Chia-Wei Chang ◽  
Hsiu-Ling Lee ◽  
Kun-Tsung Lu
Keyword(s):  
Linseed Oil ◽  
Impact Resistance ◽  
Polymeric Coating ◽  
Drying Time ◽  
Nitrogenous Compounds ◽  
Drying Oils ◽  
Drying Oil ◽  
Wood Coatings ◽  
Speed Up ◽  
Oriental Lacquer

Oriental lacquer, a natural and renewable polymeric coating, comes from the sap produced by lacquer trees. For practical application, oriental lacquer must be refined to reduce excess water and enhance its quality. In this study, drying oils were blended with oriental lacquer during the refining process to prepare an oil-modified refined lacquer (OMRL). The type and adding amount (0, 10, and 20% by wt.) of drying oils for wood coatings utilization were evaluated. Rhus succedanea oriental lacquer is composed of 54.1% urushiols, 34.3% water, 7.2% plant gum, and 4.4% nitrogenous compounds, and drying oils, including tung oil (TO), linseed oil (LO), and dehydrated castor oil (DCO) were used as materials in this study. The results show that the drying oil acts as a diluent, which reduces the viscosity and enhances the workability and could shorten the touch-free drying time and speed up the hardened drying of the OMRL. The results also indicate that the hardness, mass retention, Tg, tensile strength, abrasion resistance, and lightfastness of OMRL films decrease as more drying oils are blended. Conversely, the bending resistance, elongation at break, impact resistance increase, and particularly, the gloss, is greatly improved through the blending of more drying oils. In conclusion, the LO-modified refined lacquer (RL) has the highest film gloss and the DCO-modified RL has the shortest drying time for coating; otherwise, the film properties are similar among the three types of drying oil.

Linseed Oil Films PERMEABILITY,ADSORPTION, AND SOLUBILITY

1940 ◽  
Vol 32 (5) ◽  
pp. 737-743 ◽  
Author(s):  
Henry Fleming Payne
Keyword(s):  
Linseed Oil ◽  
Oil Films

scholarly journals A Preliminary Study on the Differentiation of Linseed and Poppy Oil Using Principal Component Analysis Methods Applied to Fiber Optics Reflectance Spectroscopy and Diffuse Reflectance Imaging Spectroscopy

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7125
Author(s):  
Silvia Rita Amato ◽  
Aviva Burnstock ◽  
Anne Michelin
Keyword(s):  
Diffuse Reflectance ◽  
Linseed Oil ◽  
Imaging Spectroscopy ◽  
Reflectance Spectroscopy ◽  
Organic Analysis ◽  
Invasive Approach ◽  
Drying Oils ◽  
Non Invasive ◽  
Reflectance Imaging Spectroscopy ◽  
Diffuse Reflectance Imaging

This paper presents results from the examination of a set of experimental samples using fibre optic reflectance spectroscopy (FORS) and diffuse reflectance imaging spectroscopy in the short-wave infrared (SWIR) range, combined with statistical analysis of the data for the discrimination and mapping of poppy and linseed oil. The aim was to evaluate the efficacy of this non-invasive approach for the study of paint samples with a view to the application of the method for characterisation of the two drying oils in painted art. The approach allowed discrimination between the two drying oils based on FORS spectra and the hyperspectral cube, indicating the influence of the spectral region around 1700 nm on the statistical discrimination based on the anti-symmetric and symmetric first overtone stretching of methylenic CH2 groups. This method is being studied as a potential non-invasive method of organic analysis of oil types that have formerly been studied using gas chromatography-mass spectrometry (GC-MS), which requires micro-samples.

Research on Structure and Properties of Camel Wool

2013 ◽  
Vol 750-752 ◽  
pp. 2313-2316 ◽  
Author(s):  
Hui Jun Li ◽  
Ke Ke Guo
Keyword(s):  
Product Quality ◽  
Moisture Absorption ◽  
Structure And Properties ◽  
Application Performance ◽  
Important Significance

Through the analysis of the structure and properties of camel wool, this paper has a more thorough understanding of camel wool and discusses the structure is how to influence on the properties, from the length, strength, fineness, crimp, fulling, moisture absorption, etc. There is very important significance on the application performance and product quality.

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