Lecithin as a wettability enhancing coating for plastic
First Claim
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1. A reaction test apparatus having a surface treated for enhanced wettability by aqueous solutions, comprising:
- a piece of plastic; and
a wettability enhancing coating on the surface of the plastic piece, the coating consisting essentially of lecithin.
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Abstract
Lecithin is coated onto the surface of plastics such as polystyrene and polyethylene to enhance the wettability of aqueous liquids to the plastic. In one application, plastic test wells are coated with lecithin to enhance the ability of liquids placed into a well with sloping sides to flow in a regular manner into a well with vertical sides. The lecithin is applied to the plastic by dissolving the lecithin in an organic solvent such as heptane, coating the solution onto the plastic surface, and evaporating the solvent.
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Citations
19 Claims
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1. A reaction test apparatus having a surface treated for enhanced wettability by aqueous solutions, comprising:
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a piece of plastic; and a wettability enhancing coating on the surface of the plastic piece, the coating consisting essentially of lecithin. - View Dependent Claims (2, 3, 4)
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5. An apparatus having a contact surface treated for enhanced wettability by aqueous liquids, comprising:
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a piece of plastic having a contact surface; and a coating of lecithin on the contact surface. - View Dependent Claims (6, 7, 8, 9)
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10. A process for preparing a reaction test apparatus treated for enhanced wettability, comprising the steps of:
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furnishing an untreated plastic reaction test apparatus having a preselected form; applying to the surface of the piece of reaction test apparatus a solution of lecithin in a solvent; and evaporating the solvent. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification