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Laundry starch or clothing starch is a liquid suspension prepared by mixing a vegetable starch in water used in the laundering of clothes. In biochemistry, starch refers to a complex polymer derived from glucose, but in the context of laundry, the term "starch" refers to a suspension of this polymer that is used to stiffen clothing.
Enzymatic desizing is the classical desizing process of degrading starch size on cotton fabrics using enzymes. Enzymes are complex organic, soluble bio-catalysts, formed by living organisms, that catalyze chemical reaction in biological processes. Enzymes are quite specific in their action on a particular substance.
Starch derivatives, such as yellow dextrins, can be modified by addition of some chemicals to form a hard glue for paper work; some of those forms use borax or soda ash, which are mixed with the starch solution at 50–70 °C (122–158 °F) to create a very good adhesive. Sodium silicate can be added to reinforce these formula.
Microwave volumetric heating (MVH) overcomes the uneven absorption by applying an intense, uniform microwave field. Different compounds convert microwave radiation to heat by different amounts. This selectivity allows some parts of the object being heated to heat more quickly or more slowly than others (particularly the reaction vessel).
Putting a non-microwave-safe material in a microwave oven can lead to chemicals leaching into your food (not good) or the melting of the container, which can lead to burns — or, at the very ...
A thin but stiff board is then glued to the inside of both the front and back cover of the book, and the entire book is trimmed slightly on the head, tail, and fore edge, often with an electric guillotine. Stiffening provides an in-house, inexpensive alternative to commercial library binding for paperbacks. While it does not involve (re-)sewing ...
By using an organic solvent, apply toluene or industrial gasoline on the fabrics, then wash them. [ 13 ] The formulation of fabric treatment composition is that in a 1.5 litre beaker, 219.8 g in distilled water, 287.9 ml is polyethylene glycol , 100 ml is 2-ethanol and the mixture is heated to 85 degrees Celsius. 120 ml of sodium stearate is ...
Here, flame height and fabric speed is the main concern to minimize the fabric damage. Singeing is performed only in the woven fabric. But in case of knit fabric, similar process of singeing is known as bio-polishing where enzyme is used to remove the protruding fibers.