Amphiphilic Surface Modifying Composition for Adhesion and Water Repellency
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Solution Overview
Problem
Existing surface modifying compositions with low surface energies face issues of adherence to surfaces and difficulty in forming a water-based application matrix due to hydrophobic properties.
Innovation Solution
A non-cellulose based amphiphilic compound with a covalently linked ionic moiety, specifically designed with certain structural components and reactive functional groups, which provides improved adhesion and compatibility with both aqueous and non-aqueous systems, enhancing surface modification properties such as oil and water repellency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surface modifying compositions use low surface energy compounds to achieve desired surface modification, then surface modification properties are improved, but adherence to surfaces deteriorates
Solution Approach 1:
The compound is divided into distinct functional segments: a low surface energy surface-modifying group and a separate high surface energy adhesive group. This segmentation allows each part to perform its specialized function independently, with the adhesive group ensuring strong surface attachment while the surface-modifying group provides the desired low surface energy properties.
Solution Approach 2:
Different parts of the compound molecule are assigned different local properties: one portion is designed with low surface energy for surface modification, while another portion is designed with high surface energy and reactive functional groups for strong adhesion. This local differentiation resolves the contradiction by allowing both properties to coexist in different locations within the same compound.
2Reliability
If surface modifying compositions have hydrophobic properties to achieve water repellency, then water repellent properties are improved, but compatibility with water-based application matrix deteriorates
Solution Approach 1:
The compound is segmented into a hydrophobic portion that provides water repellency and a hydrophilic portion containing polar functional groups that enable compatibility with water-based application matrices. This segmentation allows the compound to function effectively in both hydrophobic and hydrophilic environments.
Solution Approach 2:
The compound acts as a molecular composite combining both hydrophobic and hydrophilic characteristics within a single molecule. This composite structure allows the compound to bridge the compatibility gap between hydrophobic surface-modifying properties and hydrophilic water-based application matrices.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The amphiphilic compound achieves excellent adhesion to substrates, providing effective protection, enhancement, and modification, including excellent oil and water repellent properties, and compatibility with various systems, as demonstrated by its use in applications like UV protectants, corrosion inhibitors, and antimicrobial coatings.
Implementation Method 1
The amphiphilic compound achieves excellent adhesion to substrates
Implementation Method 2
enhancing surface modification properties such as oil and water repellency
Data Source
AI summary
A surface modifying composition comprises an amphiphilic compound which is non-cellulose based, the amphiphilic compound including a covalently linked ionic moiety with the following formula: where M=metal oxide or binary metal oxide, Ai is selected from compounds with surface energy greater than or equal to 25 dynes cm−1, A2 is selected from compounds with surface energy greater than or equal to 12 dynes cm−1, A3 is selected from compounds having more than one reactive functional group, x=NH2, NHR′ or NR′2 (R′=methyl, ethyl, propyl or isopropyl), y=COOH, SO3H or PO3H, and R=H or halogen; and where one of the A1-x, A2, or A3-y may be replaced by a second O—R.