Plant Polysaccharide Detergent Tablets Without PVA Microplastics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Laundry detergent capsules and tablets using polyvinyl alcohol (PVA) as a film-forming agent face environmental risks due to microbial degradation leading to microplastics and nanoplastics, and some regions are considering bans, necessitating a more environmentally friendly alternative.
Innovation Solution
A detergent composition using a mixture of anionic and nonionic surfactants with plant polysaccharides, which are biodegradable and do not produce microplastics or nanoplastics, combined with a shape-promoting agent to form stable detergent tablets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If polyvinyl alcohol (PVA) is used as a film-forming agent in detergent tablets, then water solubility and molding quality are improved, but environmental pollution increases due to microplastics and nanoplastics
Solution Approach 1:
The patent changes the chemical composition parameter from synthetic PVA to natural plant polysaccharides (such as starch, cellulose, or chitin), fundamentally altering the material's biodegradability characteristics while maintaining film-forming capabilities. This substitution eliminates microplastic generation while preserving the required functional properties.
Solution Approach 2:
The patent employs composite formulations combining plant polysaccharides with surfactants and other detergent components to create a multi-component film-forming system. This composite approach allows the natural polysaccharide matrix to provide structural integrity and solubility while incorporating functional additives to maintain or enhance cleaning performance.
2Object-generated harmful factors
If plant polysaccharide is used as a film-forming agent, then environmental friendliness and biodegradability are improved, but foam stability during preparation may deteriorate
Solution Approach 1:
The patent introduces surfactants as intermediary substances that mediate between the plant polysaccharide matrix and the aqueous environment. These surfactant molecules adsorb at interfaces and stabilize foam structures, compensating for the inherently lower foam stability of natural polysaccharides while maintaining the environmentally friendly core material.
Solution Approach 2:
The patent optimizes the concentration and molecular weight parameters of both plant polysaccharides and surfactants to achieve optimal foam stability. By carefully controlling these physical parameters, the formulation maintains adequate foam characteristics during preparation without compromising the biodegradability and environmental benefits of the natural polysaccharide base.
3Duration of action of stationary object
If plant polysaccharide is used as a thickening agent, then viscosity is improved, but foaming capacity during washing may decrease
Solution Approach 1:
The patent optimizes the concentration parameter of plant polysaccharides to achieve the desired viscosity range for proper tablet formation and handling, while carefully controlling it to remain below levels that would excessively suppress foaming. This parameter optimization balances the competing requirements of adequate thickness for processing and sufficient foaming for cleaning performance.
Solution Approach 2:
The patent uses surfactants to generate and maintain foam structures that replicate the protective and cleaning functions normally provided by high-viscosity systems. The surfactant-based foam provides the necessary cushioning and cleaning action without requiring excessive polysaccharide concentrations that would otherwise be needed to achieve equivalent foaming capacity.
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 plant polysaccharide-based tablets maintain viscosity and foam stability during preparation, enhance stain-removing performance, and are environmentally friendly, with rapid dissolution and reduced foaming, addressing the limitations of PVA.
Implementation Method 1
as a thickening agent, the plant polysaccharide can significantly increase the viscosity of the solution
Implementation Method 2
the plant polysaccharide spontaneously surrounds water molecules upon dissolution and competitively adsorbs at the gas-liquid interface
Implementation Method 3
the plant polysaccharide can be used as a soft water agent in hard water, tap water and other environments to combine with Ca2+, Mg2+
Implementation Method 4
through the formation of colloidal network, the emulsified oil and dirt can be suspended in the cleaning system
Data Source
AI summary
Disclosed are a detergent composition, a preparation method thereof, and a dissoluble detergent tablet, which fall within the field of detergent products. A detergent composition, wherein a raw material for preparing the detergent composition includes the following components by mass percentages: anionic surfactant: 11-45%; nonionic surfactant: 1-15%; plant polysaccharide: 5-30%; shape promoting agent: 3-18%; builder: 5-20%; enzymatic preparation: 0-5%; chelating agent: 0.5-5%; essence: 0-0.5%; and a balance of water; a ratio of a total mass of the anionic surfactant and the nonionic surfactant to a mass of the plant polysaccharide is (1-7):1; and a mass ratio of the plant polysaccharide to the shape promoting agent is (0.4-9):1. The present application has the effect of providing a more environmentally friendly detergent composition, and can be applied to the fields of fabric washing, hard surface cleaning, dishwashing and the like.