Chemical and mechanical properties of butyl methacrylate grafted wool fiber

2004 ◽  
Vol 91 (6) ◽  
pp. 3813-3817 ◽  
Author(s):  
Xiang-Ying Meng
Keyword(s):  
Mechanical Properties ◽  
Wool Fiber ◽  
Butyl Methacrylate

scholarly journals Friction and Mechanical Properties of AFM-Scan-Induced Ripples in Polymer Films

2021 ◽  
Vol 7 ◽  
Author(s):  
Sebastian Friedrich ◽  
Brunero Cappella
Keyword(s):  
Mechanical Properties ◽  
Polymer Films ◽  
Mechanical Response ◽  
Butyl Methacrylate ◽  
Clear Correlation ◽  
Contact Mode ◽  
Cantilever Deflection ◽  
Atomic Force ◽  
Volume Measurements ◽  
Force Volume

When compliant samples such as polymer films are scanned with an atomic force microscope (AFM) in contact mode, a periodic ripple pattern can be induced on the sample. In the present paper, friction and mechanical properties of such ripple structures on films of polystyrene (PS) and poly-n-(butyl methacrylate) (PnBMA) are investigated. Force volume measurements allow a quantitative analysis of the elastic moduli with nanometer resolution, showing a contrast in mechanical response between bundles and troughs. Additionally, analysis of the lateral cantilever deflection when scanning on pre-machined ripples shows a clear correlation between friction and the sample topography. Those results support the theory of crack propagation and the formation of voids as a mechanism responsible for the formation of ripples. This paper also shows the limits of the presented measuring methods for soft, compliant, and small structures. Special care must be taken to ensure that the analysis is not affected by artefacts.

scholarly journals Influence of Alkali Treatment on the Mechanical Properties of Wool Fiber

1975 ◽  
Vol 46 (4) ◽  
pp. 202-207
Author(s):  
Keiji KONDO ◽  
Yukichi SAKIMOTO
Keyword(s):  
Mechanical Properties ◽  
Alkali Treatment ◽  
Wool Fiber

EFFECT OF SURFACE TREATMENT ON THE PROPERTIES OF WOOL FABRIC

2007 ◽  
Vol 14 (04) ◽  
pp. 559-563 ◽  
Author(s):  
C. W. KAN ◽  
C. W. M. YUEN ◽  
C. K. CHAN ◽  
M. P. LAU
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Fiber Surface ◽  
Air Permeability ◽  
Wool Fiber ◽  
Wool Fabric ◽  
Physical Treatment ◽  
Temperature Plasma ◽  
Technical Problems ◽  
Chemical Treatments

Wool fiber is commonly used in textile industry, however, it has some technical problems which affect the quality and performance of the finished products such as felting shrinkage, handle, lustre, pilling, and dyeability. These problems may be attributed mainly in the presence of wool scales on the fiber surface. Recently, chemical treatments such as oxidation and reduction are the commonly used descaling methods in the industry. However, as a result of the pollution caused by various chemical treatments, physical treatment such as low temperature plasma (LTP) treatment has been introduced recently because it is similarly capable of achieving a comparable descaling effect. Most of the discussions on the applications of LTP treatment on wool fiber were focused on applying this technique for improving the surface wettability and shrink resistance. Meanwhile, little discussion has been made on the mechanical properties, thermal properties, and the air permeability. In this paper, wool fabric was treated with LTP treatment with the use of a non-polymerizing gas, namely oxygen. After the LTP treatment, the fabrics low-stress mechanical properties, air permeability, and thermal properties were evaluated and discussed.

Prevention of Tissue Adhesion by a Spontaneously Formed Phospholipid Polymer Hydrogel

2007 ◽  
Vol 342-343 ◽  
pp. 777-780 ◽  
Author(s):  
Mizuna Kimura ◽  
Tomohiro Konno ◽  
Madoka Takai ◽  
Noriyuki Ishiyama ◽  
Toru Moro ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aqueous Solutions ◽  
Viscoelastic Properties ◽  
Gelation Time ◽  
Butyl Methacrylate ◽  
Tissue Adhesion ◽  
Polymer Hydrogels ◽  
Physiological Conditions ◽  
Phospholipid Polymer

We investigated phospholipid polymer hydrogels containing Fe3+ ions (PMA/PMB/Fe hydrogel) for their use as antiadhesive materials in the healing tissues. These hydrogels were prepared from the aqueous solutions of poly(2-methacryloyloxyethyl phosphorylcholine (MPC)-comethacrylic acid) (PMA) and poly(MPC-co-n-butyl methacrylate) (PMB). The PMA/PMB hydrogel is formed by the intermolecular interactions between PMA and PMB, and it reversibly dissociates under physiological conditions. The addition of Fe3+ ions could control the gelation time and the dissociation time. Mechanical properties such as the gelation time and viscoelastic properties can be controlled by the FeCl3 concentration. With regard to biocompatibility, no evidence of inflammation was observed in vivo. Therefore, the PMA/PMB/Fe hydrogel has a potential to be used as an antiadhesive material.

Anisotropy of the mechanical properties of cross-linked poly(n-butyl methacrylate)

1974 ◽  
Vol 8 (1) ◽  
pp. 131-132
Author(s):  
V. G. Sinyavskii ◽  
A. N. Kulaev
Keyword(s):  
Mechanical Properties ◽  
Butyl Methacrylate
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