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Synthesis and characterization of carboxymethyl starch-g-polyacrylic acids and their properties as adsorbents for ammonia and phenol
- Source :
- International journal of biological macromolecules. 138
- Publication Year :
- 2019
-
Abstract
- Cigarette smoke contains a lot of harmful chemicals which cause different diseases like cancer, heart disease, bronchitis and ulcer etc. Ammonia and phenol are among those chemicals which cause cancer, fibrosis, respiratory disorder and pneumonia. So, to remove ammonia and phenol from cigarette smoke, five different types of carboxymethyl starch- g -polyacrylic acids (CMS- g -PAAs) were synthesized by using different initiators, different mole ratio of acrylic acid to CMS anhydroglucose unit (AGU) and different amount of water. Three types of modified CMSs, CMS- g -PAA1, CMS- g -PAA3 and CMS- g -PAA4 were selected for further characterization and application for ammonia and phenol adsorption. The 1 H NMR and FT-IR spectroscopy confirmed the successful grafting of PAA on CMS. Crystallinity of CMS and three modified CMSs was checked by their XRD analysis. The XRD analysis showed that CMS had crystalline nature which was lost after modification. The thermal properties of CMS and the modified samples were checked by TGA and DTG which also gave information about the successful grafting on PAA on CMS. Finally the modified CMSs were further used for the adsorption applications of ammonia and phenol from the gaseous stream. It was found that CMS- g -PAA4 showed the highest adsorption efficiency towards ammonia (0.352 mmol/g) and phenol (0.18 mmol/g).
- Subjects :
- Cost-Benefit Analysis
Acrylic Resins
02 engineering and technology
Chemistry Techniques, Synthetic
Biochemistry
03 medical and health sciences
Ammonia
chemistry.chemical_compound
Crystallinity
Adsorption
Structural Biology
health services administration
Phenol
Molecular Biology
health care economics and organizations
030304 developmental biology
Acrylic acid
0303 health sciences
Green Chemistry Technology
Starch
General Medicine
021001 nanoscience & nanotechnology
Grafting
Carboxymethyl starch
chemistry
Proton NMR
Environmental Pollutants
0210 nano-technology
Nuclear chemistry
Subjects
Details
- ISSN :
- 18790003
- Volume :
- 138
- Database :
- OpenAIRE
- Journal :
- International journal of biological macromolecules
- Accession number :
- edsair.doi.dedup.....0d2afb26d8dee392566131fc130ec17d