Effects of Synthappret BAP-Based Treatments on the Cuff-Edge Felting and Mechanical Properties of a Lightweight Woven Wool Fabric

1992 ◽  
Vol 62 (10) ◽  
pp. 595-602 ◽  
Author(s):  
P. G. Cookson ◽  
A. G. De Boos
Keyword(s):  
Mechanical Properties ◽  
Mechanical Action ◽  
Wool Fabric ◽  
Bending Rigidity ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Dry Cleaning ◽  
Fiber Damage ◽  
Damage And Failure ◽  
Scanning Electron

Cuff-edge felting of a pure wool shirting fabric treated with Synthappret BAP, either alone or in combination with a polyurethane or polyacrylate, has been examined. Using appropriate levels of polymer, cuff-edge felting was prevented after the recommended test of five 5A washing cycles in a Wascator. The inherent stiffness of the polymer-treated fabric was reduced by washing, decatizing or, especially, dry-cleaning; reductions in bending rigidity were accompanied by increases in extensibility. Scanning electron micrograph studies showed that mechanical action along a cuff edge during washing caused fiber damage and failure of the polymer. Mechanical action also occurred during dry-cleaning, and this lead to more severe cuff-edge felting as a result of subsequent washing. The level of weave crimp has a major bearing on cuff-edge felting.

scholarly journals Fabrication of raw and oxidized saw dust reinforced low density polyethylene (LDPE) composites and investigation of their physico-mechanical properties

2013 ◽  
Vol 47 (4) ◽  
pp. 365-372 ◽  
Author(s):  
S Sultana ◽  
HP Nur ◽  
T Saha ◽  
M Saha
Keyword(s):  
Mechanical Properties ◽  
Mangifera Indica ◽  
Flexural Modulus ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Saw Dust ◽  
Ldpe Composites ◽  
Scanning Electron

In this research work, cellulosic waste mango (Mangifera indica) saw dust used as the reinforcing material with low density polyethylene (LDPE). A number of samples of saw dust reinforced low density polyethylene (LDPE) composites were prepared by compression moulding technique. In order to improve the mechanical properties of saw dust-LDPE composites, unbleached raw saw dust fibers were modified by oxidation using sodium hypochlorite. FT-IR spectroscopic and scanning electron micrograph (SEM) analyses were done and the results showed the evidence of positive oxidation reaction. The effects of oxidized saw dust on the performance of oxidized saw dust reinforced LDPE composites were studied comparing with the raw saw dust-LDPE composites. The effects of fiber content on the physico-mechanical properties of composites were also studied by preparing the composites with different percentage of fiber loading (from 7.5 wt% to 30 wt%) for each type of composite. Mechanical properties such as tensile strength, tensile modulus, elongation at break, flexural strength, flexural modulus of the resulting composite were measured. Better results were obtained from oxidized saw dust-LDPE composites. Scanning electron micrograph and water absorption tests were carried out for all composites and improved results were found for oxidized saw dust-LDPE composites. Bangladesh J. Sci. Ind. Res. 47(4), 365-372, 2012 DOI: http://dx.doi.org/10.3329/bjsir.v47i4.14065

Quantitative Separation of NMR Signal Amplitude of Water in Wood on the Basis of T2

2011 ◽  
Vol 704-705 ◽  
pp. 552-557
Author(s):  
Da Yan Ma ◽  
Xi Ming Wang ◽  
Ming Hui Zhang ◽  
Xue Qi Li
Keyword(s):  
Mechanical Properties ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Water Content ◽  
Water Distribution ◽  
Physical And Mechanical Properties ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Scanning Electron ◽  
Nuclear Magnetic

As a kind of crude and green material, wood is essential to human life. Meanwhile, the amount of water played a vital role to almost all engineering properties of wood. Moisture affects dimensional stability, physical and mechanical properties, and susceptibility toward biological degradation. Consequently, it provides a theoretical basis for the reasonable drying model to explore the water assignment and content in timber. we present here the application of a nuclear magnetic resonance technique, which is used to quantitatively analyse water distribution in wood on the basis of T2. In this paper, we will analyse the water distribution in hardwood on the basis of T2. Refer to the scanning electron micrographs of the hardwood, we can speculate the relaxation time of the water in different cell lumens respectively. Moreover, it is even more important to calculate the organic proportion in wood by the corresponding amplitude of signal derived from the water in different cell lumens. This, compared with a scanning electron micrograph, has allowed us to produce a assumable distribution of water in wood, even the corresponding organic proportion in wood, which allows us to speculate physical and mechanical properties of wood. A mobile NMR probe has been used as a non-destructive and non-invasive tool for water content analysis on wood samples. In this paper, we will adopt NMR methods to explain. This, has opened up a way for the accurate determination of the moisture content of wood, even can be applied to the areas of food and so on. Keywords: Nuclear magnetic resonance; Water distribution in wood; T2; Scanning electron micrograph; Water content

Analytical and High-Resolution EM Study of Crystalline Phases formed at Metal-Ceramic Interface

1990 ◽  
Vol 48 (2) ◽  
pp. 426-427
Author(s):  
N. Merk ◽  
A. P. Tomsia ◽  
G. Thomas
Keyword(s):  
Cross Section ◽  
Dissimilar Materials ◽  
Ceramic Materials ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Structural Applications ◽  
Metal Ceramic ◽  
The Subject ◽  
Ceramic Compounds ◽  
Scanning Electron

A recent development of new ceramic materials for structural applications involves the joining of ceramic compounds to metals. Due to the wetting problem, an interlayer material (brazing alloy) is generally used to achieve the bonding. The nature of the interfaces between such dissimilar materials is the subject of intensive studies and is of utmost importance to obtain a controlled microstructure at the discontinuities to satisfy the demanding properties for engineering applications . The brazing alloy is generally ductile and hence, does not readily fracture. It must also wett the ceramic with similar thermal expansion coefficient to avoid large stresses at joints. In the present work we study mullite-molybdenum composites using a brazing alloy for the weldment.A scanning electron micrograph from the cross section of the joining sequence studied here is presented in Fig. 1.

Bacterial biofilm adherence to middle-ear ventilation tubes: scanning electron micrograph images and literature review

2007 ◽  
Vol 121 (10) ◽  
pp. 993-997 ◽  
Author(s):  
M Barakate ◽  
E Beckenham ◽  
J Curotta ◽  
M da Cruz
Keyword(s):  
Middle Ear ◽  
Bacterial Biofilm ◽  
Electron Micrograph ◽  
Ventilation Tube ◽  
Scanning Electron Micrograph ◽  
Chronic Infections ◽  
Middle Ear Ventilation ◽  
Conventional Antibiotics ◽  
Scanning Electron

Introduction: The organisms that cause many device-related and other chronic infections actually grow in biofilms in or on these devices. We sought to examine the role of biofilm formation in chronic middle-ear ventilation tube infection.Case report: Scanning electron micrograph images are presented which demonstrate biofilm on a middle-ear ventilation tube removed from a five-year-old child's chronically discharging ear. A review of the relevant international literature explores the role of biofilms in chronic infection and discusses potential intervention strategies.Conclusion: Biofilms may be responsible for chronic middle-ear ventilation tube infection that resists treatment with conventional antibiotics.

scholarly journals A new species, Stemonitis sichuanensis, and a newly recorded species, Stemonitis marjana (Myxogastria) from China

Phytotaxa ◽  
2016 ◽  
Vol 258 (2) ◽  
pp. 195 ◽  
Author(s):  
ZHANG BO ◽  
LI YU
Keyword(s):  
New Species ◽  
New Record ◽  
Sichuan Province ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Natural Reserve ◽  
A New Species ◽  
Scanning Electron

A new species, Stemonitis sichuanensis, collected in Gexigou National Natural Reserve, Sichuan province, China, is described herein. This new species has a columella that usually ends in an ovoid to triangular expansion at the apex of the sporotheca and small spores (about 6–7 μm in diam.). We present a scanning electron micrograph study of S. sichuanensis and a key to the species in the genus Stemonitis. Holotype specimens of S. sichuanensis are deposited in the Herbarium of the Mycological Institute of Jilin Agricultural University (HMJAU), Changchun, China. We also report a new record of another species of Stemonitis, S. marjana Y. Yamam., in this paper, specimens of which are also deposited in the HMJAU.

Scanning Electron Micrograph and Surface Hardness of Mineral Trioxide Aggregate in the Presence of Alkaline pH

2009 ◽  
Vol 35 (5) ◽  
pp. 706-710 ◽  
Author(s):  
Mohammad Ali Saghiri ◽  
Mehrdad Lotfi ◽  
Ali Mohammad Saghiri ◽  
Sepideh Vosoughhosseini ◽  
Mohammad Aeinehchi ◽  
...  
Keyword(s):  
Surface Hardness ◽  
Mineral Trioxide Aggregate ◽  
Alkaline Ph ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Scanning Electron

Vestured Scalariform Perforation Plate Openings in Neomyrtus pedunculata

1974 ◽  
Vol 22 (2) ◽  
pp. 425 ◽  
Author(s):  
BG Butterfield ◽  
BA Meylan
Keyword(s):  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Perforation Plate ◽  
Perforation Plates ◽  
Scanning Electron

The occurrence of vestures in the corners of the last few openings at each end of the scalariform perforation plates in Neomyrtus pedunculata is recorded and illustrated with a scanning electron micrograph.

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