Activated Carbon Polymer Compositions for Humid Formaldehyde Removal
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Solution Overview
Problem
Existing technologies are ineffective in efficiently and safely removing formaldehyde from enclosed environments such as packaging materials, particularly in conditions of elevated temperatures and humidity, leading to potential health risks and product instability due to cross-linking effects.
Innovation Solution
A polymer composition incorporating activated carbon as an active agent, combined with a base polymer and a channeling agent, forms interconnecting channels to enhance formaldehyde scavenging capabilities, effectively adsorbing formaldehyde even in varying temperature and humidity conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If activated carbon is used to adsorb formaldehyde, then formaldehyde removal efficiency is improved, but the effectiveness deteriorates under elevated temperatures and humidity conditions
Solution Approach 1:
The patent combines activated carbon with polyhydric polymers to create a composite material that leverages the high adsorption capacity of activated carbon while the polymer matrix provides stability and functionality under elevated temperatures and humidity conditions, resolving the contradiction between formaldehyde removal efficiency and reliability in harsh environments
Solution Approach 2:
The patent modifies the physical and chemical parameters of the formaldehyde removal system by incorporating polymers with specific functional groups that remain active under elevated temperatures and humidity, changing the operational parameters to maintain effectiveness in conditions where activated carbon alone would fail
2Strength
If formaldehyde is present in gelatin products, then cross-linking effect is improved, but product stability deteriorates
Solution Approach 1:
The patent applies preliminary anti-action by incorporating formaldehyde scavenging agents into the packaging material before the gelatin product is exposed to formaldehyde, preventing the cross-linking reaction from occurring in the first place rather than addressing the consequences after cross-linking begins
Solution Approach 2:
The patent introduces an intermediary substance (formaldehyde scavenging agent) between the formaldehyde and the gelatin product, which intercepts and reacts with the formaldehyde before it can cause cross-linking, thus protecting the product stability without directly interacting with the gelatin itself
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 polymer composition significantly reduces formaldehyde levels, maintaining product integrity and safety by preventing cross-linking, thereby extending shelf life and ensuring effective drug release from gelatin capsules.
Implementation Method 1
The polymer compositions comprise active carbon as the active agent... effectively adsorbing formaldehyde
Implementation Method 2
adding a channeling agent to the base polymer... forms interconnecting channels to enhance formaldehyde scavenging capabilities
Data Source
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AI summary
Disclosed are polymer compositions comprising activated carbon and method of making the polymer compositions that are used for sorption of formaldehyde from air, gas or liquids. The activated carbon is entrained in at least one base polymer with optional channels throughout.