Moisture blooming

Environmental conditions under which solvent release from the adhesive on the substrate is produced must be carefully controlled. Humidity is critical because loss of heat due to solvent evaporation may allow attainment of the dew point (the evaporation of the solvent is an endothermic process), and then condensation of water on the adhesive can result. This phenomenon is often called moisture blooming. The presence of water on the adhesive film causes a detrimental effect because the autoadhesion of rubber chains is greatly inhibited. Therefore, humidity must be controlled and avoided by increasing the temperature during solvent evaporation. 

I was sharing my appreciation of this exotic bloom with my daughter, Julia, who was seated with me at a table on which the flower sat. To our amazement the flower then increased about four times in both size and vividness of coloration. I ascribed this metamorphosis to the process by which Chinese paper flowers rapidly bloom when placed in water. The paper simply expands as it absorbs the moisture and dyes in the paper give it a more intense color as they go into solution. 

Paintability is generally not a problem under dry normal conditions. Unusually high relative humidity conditions can affect adhesion of the paint film or cause chemical crystal blooming on the paint surface due to the increased moisture content of the wood. Natural or clear finishes are generally not used for treated wood because the chemicals may cause darkening or irregular staining. 

Foxgloves enjoy a shady site with rich, moist, well-drained, slightly acidic soil. Plants tolerate full sun, but favor cool weather and need shade in extreme summer heat. Water regularly to maintain soil moisture. Stake tall cultivars to support flower spikes plant in a sheltered site. Remove foxgloves after they have set seed and self-sown next year s crop. Cutting flowers before they set seed promotes second-year blooms, but flowering is reduced the second year. 

Favored as rock garden plants, sedums endure poor, dry soil, but perform well in most well-drained soils. Full sun is best sedums tolerate some shade, but resulting stems will be weaker. Although drought-tolerant, sedums bloom better if watered regularly. Excess moisture encourages rots, especially in winter. Sedum stems and leaves form roots readily. 

Wisterias are among the finest and most impressive of ornamental vines. They grow best in full sun but wall tolerate some shade. Set out in spring or fall in deeply prepared, moisture-retentive soil. Wi.sterias are often reluctant to bloom, sometimes taking many years. They seem to grow and flower best when given ample water reluctant plants can sometimes... 

A healthy rose plant will bloom with profuse, beautiful flowers. The plant requires water, and therefore must be watered. If water is added without regard to the condition of the plant, this is an open-loop system. If water is added only when the plant needs it, or if the amount varies to meet plant moisture requirements, then the system is closed-loop with feedback. If extra water is added because you will be unable to care for the plant for a few days, then this is a feedforward control system. 

Sugar bloom is the candy world s way of saying sugar crystallization. If your candy is exposed to moisture, sugar molecules dissolve out of the fat in the chocolate and once that moisture evaporates, the separated sugars have a chance to crystallize. 

Environmental Contains no heavy metals or other agents harmful to the environment ecologically inert pyrophosphate additive may affect aquatic life or cause algal blooms if released into rivers in Ig. quantities Precaution Avoid contact with strong min. acids or substances liable to decomp, by dust, e.g., peroxides avoid excessive moisture humidity or direct contact with water results in caking Hazardous Decomp. Prods. Lithium salts if prod. dec. by min. acid Storage Store under dry conditions seal container after use Laponite MS [Southern Clay Prods.]... 

CH3(CH2)i2C0(0CH2CH2)30CH2(CH2)i2CH3 Uses Surfactant, emollient, thickener, carrier, SE base, emulsifier, moisturizer for cosmetics, creams, lotions, lipsticks, blooming bath oils, pharmaceuticals... 

Silver(II) fluoride is a gray-black, amorphous solid frequently showing a yellow bloom. It reacts very vigorously with water and is very hygroscopic, being converted to a greasy black mass by exposure to atmospheric moisture. 

Figure 4.2 The chemistry of a tertiary fatty amine and its quaternary ammonium salt (trilaurylammonium stearate) blooming to the surface to attract conductive atmospheric moisture, creating a surface ESD effect while the underlying polymer remains insulating...

Permanent antistats do not depend on the relative humidity and they do not lose their effectiveness in a short time. One type is exemplified by the use of polyether-polyamide block copolymers combined with an intrinsically conducting substance, and another class consists of neoalkoxytitanates or zirconates. These compounds form non-blooming, bipolar layers, producing a surface and volume electron-transfer circuit, which produces a permanent antistatic effect. They are independent of atmospheric moisture and compatible with a wide range of polymers, including polyolefins, polyesters, polystyrene and PVC. Inherently conducting polymer additives such as sulfonated polyanilines are also used. They are discussed further in Chapter 5. 

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