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Synthesis and characterization of modified poly(aspartic acid) and its performance as a formaldehyde adsorbent
Author(s) -
Zhang Ying,
Zhang Qingshan,
Li Yunzheng,
Yin Hongquan,
Lu Baoping,
Shi Huiping
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45798
Subject(s) - adsorption , formaldehyde , freundlich equation , urea formaldehyde , langmuir , fourier transform infrared spectroscopy , nuclear chemistry , langmuir adsorption model , copolymer , gel permeation chromatography , grafting , chemistry , materials science , polymer chemistry , chemical engineering , organic chemistry , polymer , adhesive , layer (electronics) , engineering
A modified poly(aspartic acid) (PASPTU) as an efficient formaldehyde adsorbent is successfully prepared by grafting poly(aspartic acid) (PASP) with threonine and urea. The graft copolymer is characterized by means of nuclear magnetic resonance, Fourier transform infrared spectroscopy, and gel permeation chromatography. Its formaldehyde adsorbent property is measured. The optimal adsorption process is as follows: synthesis temperature was 40 °C, molar ratio of PSI, threonine, and urea was 1:0.6:0.4 and adsorption time was 3.0 h. In above condition, the formaldehyde adsorbent efficiency of the copolymer was nearly 100% when the PASPTU dosage was 0.5 g. The Langmuir and Freundlich adsorption isotherms are used to study the adsorption process of formaldehyde. The findings show that PASPTU has excellent formaldehyde adsorbent efficiency. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 45798.