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Related Concept Videos

Plasticizers01:31

Plasticizers

221
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
221
Additives and Fillers in Concrete01:29

Additives and Fillers in Concrete

227
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
227
Chemical Agents for Microbial Control01:27

Chemical Agents for Microbial Control

618
Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
618
Superplasticizers01:30

Superplasticizers

198
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
198

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Related Experiment Video

Updated: Dec 3, 2025

Manufacturing Of Robust Natural Fiber Preforms Utilizing Bacterial Cellulose as Binder
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Environmentally Friendly Methylcellulose-Based Binders for Active and Passive Dust Control.

Taehee Lee1, Sangsik Kim2,3,4, Samuel Kim5

  • 1Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States.

ACS Applied Materials & Interfaces
|October 29, 2020
PubMed
Summary
This summary is machine-generated.

Environmentally friendly methylcellulose (MC)-based polymers effectively reduce particulate matter (PM) emissions in active dust control and improve air filtration in passive methods. These green polymers offer a sustainable solution for advanced dust control technology.

Keywords:
air filterdust suppressanthydroxyethyl methylcellulosehydroxypropyl methylcellulosemethylcelluloseparticulate matter

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Area of Science:

  • Environmental Science
  • Materials Science
  • Polymer Chemistry

Background:

  • Particulate matter (PM) is a key air pollutant with significant human health risks.
  • Effective and sustainable dust control materials are crucial but remain challenging to identify.
  • Current dust control technologies often rely on less environmentally friendly polymeric materials.

Purpose of the Study:

  • To evaluate the particulate matter (PM) reduction efficiency of environmentally friendly methylcellulose (MC)-based polymers.
  • To assess the efficacy of MC-based polymers in both active (dust suppressants) and passive (air filters) dust control applications.
  • To compare the performance of MC-based polymers with conventional materials for dust suppression.

Main Methods:

  • Utilized methylcellulose (MC)-based polymers derived from cellulose modified with methyl side groups.
  • Tested MC-based polymers as dust suppressants on soil under simulated wind conditions (25 m/s).
  • Assessed the performance of MC-based polymers as a coating on commercial face mask filters for air filtration.
  • Compared PM reduction efficiency against water, unmodified cellulose, and a synthetic polymer.

Main Results:

  • MC-based polymers reduced PM emissions by 95% and 85% compared to water and unmodified cellulose, respectively.
  • Effectively suppressed mineral dust from a copper mine using approximately 50 times less material than a synthetic polymer.
  • Improved the filtration efficiency of commercial face masks to over 99% while maintaining airflow resistance.

Conclusions:

  • Environmentally friendly MC-based polymers are effective dust binders that agglomerate air pollutants.
  • MC-based polymers significantly prevent PM emission from sources and reduce inhalation of suspended particles.
  • These polymers represent essential materials for developing advanced active and passive dust control technologies.