Modified Block Copolymer Wetting Agent for Plant Growth Media
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Solution Overview
Problem
Low moisture content in plant growth media hinders water infiltration and nutrient exchange, leading to stunted plant growth, as existing compositions and methods have varying effectiveness in enhancing wetting rates and water uptake.
Innovation Solution
A method involving a wetting agent composition comprising a modified block copolymer esterified from ethylene oxide-propylene oxide block copolymers and fatty acids, which increases the wetting rate of plant growth media, allowing for improved water and nutrient uptake by plant roots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If water is applied to dry plant growth medium, then water infiltration is needed, but the dry medium surface is hard and impenetrable preventing water infiltration
Solution Approach 1:
The patent modifies the chemical composition parameters of the block copolymer (molecular weight, hydrophile percent, HLB value) to optimize wetting performance. By changing these parameters, the composition can effectively reduce surface hardness and improve water infiltration into dry plant growth medium.
Solution Approach 2:
The patent uses a composite block copolymer structure combining hydrophobic and hydrophilic segments. This composite material structure allows the composition to interact with both the dry medium surface and water, effectively reducing surface hardness and enhancing wetting rate simultaneously.
2Productivity
If moisture content in plant growth medium is low, then water infiltration is hindered, but nutrient exchange between roots and medium also becomes insufficient
Solution Approach 1:
The wetting agent composition acts as an intermediary substance that facilitates both water infiltration and nutrient exchange. By improving the wetting properties of the medium, it enables better contact between water, nutrients, and plant roots, thereby supporting plant growth even in conditions where moisture content would normally be limiting.
3Reliability
If existing wetting agent compositions are used, then some wetting effect is achieved, but effectiveness varies significantly and water uptake improvement is limited
Solution Approach 1:
The patent establishes specific parameter ranges for the block copolymer (molecular weight 500-30,000 g/mol, hydrophile percent 10-90%, HLB value 3-30) to ensure reliable and consistent wetting effectiveness. These defined parameters reduce formulation complexity by providing clear guidelines for effective composition design.
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 solution enhances water infiltration and nutrient uptake, conserves water and fertilizers, and increases plant productivity, providing significant cost savings by improving soil moisture retention and root zone wetting.
Implementation Method 1
contacting the plant growth medium with a wetting agent composition comprising at least one modified block copolymer... increasing the wetting rate of the plant growth medium
Implementation Method 2
allows water to infiltrate the plant growth medium... improving the water uptake and the nutrient uptake by plant roots
Data Source
AI summary
The present invention is directed to a method for increasing the wetting rate of a plant growth medium utilizing a wetting agent composition. The composition is comprised of at least one modified block copolymer. The modified block copolymer is comprised of an ester of an ethylene oxide-propylene oxide block copolymer and a fatty acid. The composition of the present invention also enhances plant growth and productivity by increasing the water uptake and the nutrient uptake by the plant roots.