Determination of carbonyl groups in polymers by reaction with 2,4-dinitrophenylhydrazine

Burfield, David R.; Law, Kia-Sang

doi:10.1016/0032-3861(79)90177-0

Cited by 21 publications

(15 citation statements)

References 19 publications

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“…For example, surface carbonyl and carboxyl groups are incorporated in low-density polyethylene films upon mild chemical oxidation, and these functionalities are at least in part responsible for the increased wettability of the previously hydrophobic surfaces (4,5). Numerous reports on the identi-fication and chemical modification of functional groups introduced on polyethylene film with chemical oxidation have been made (6)(7)(8)(9)(10).…”

Section: Literature Citedmentioning

confidence: 99%

Chemical derivatization in electron spectroscopy for chemical analysis of surface functional groups introduced on low-density polyethylene film

Everhart¹,

Reilley²

1981

Anal. Chem.

284

134

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Section: Literature Citedmentioning

confidence: 99%

Chemical derivatization in electron spectroscopy for chemical analysis of surface functional groups introduced on low-density polyethylene film

Everhart¹,

Reilley²

1981

Anal. Chem.

284

134

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“…1. The latter reaction allows the analysis of this group in different matrixes, such as polymers, fuels, and cosmetics followed via chromatographic techniques (13)(14)(15)(16).…”

mentioning

confidence: 99%

Forensic Investigation of Formaldehyde in Illicit Products for Hair Treatment by DAD‐HPLC: A Case Study

Oiye

Ribeiro

Okumura

et al. 2016

Journal of Forensic Sciences

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The illegal use of formalin (commercial formaldehyde) in cosmetic products harms the health of individuals exposed to this substance. Over the last years, the commercial availability of these products, especially those containing irregular dosage of formaldehyde, has increased in Brazil. This work analyzes some products for hair treatment available in the Brazilian market and verifies their safety. The adopted analytical methodology involved sample derivatization with 2,4-dinitrophenylhydrazine, followed by high-performance liquid chromatography with ultraviolet detection (UV-VIS) at λ = 365 nm. The limit of quantification is 2.5 × 10 w/w, and the recovery tests were around 93%. Some of the samples contained high and illegal formaldehyde levels ranging from 9% to 19% (w/w) and others presented suitable concentrations of the analyte. On the basis of the results, this work discusses the efficiency and practicality of this analytical method for forensic purposes.

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“…The Brady's reagent dissolved in THF has a maximum absorption band at 350 nm. After reaction with poly(BL‐ co ‐St) copolymers, the maximum absorption band of the product shifts to 364 nm, referring to the formation of hydrazones between hydrazine and carbonyl groups …”

Section: Resultsmentioning

confidence: 67%

Zwitterionic Copolymerization of β‐Butyrolactone with Styrene

Xiao

Jiang

Zhang

et al. 2018

Macro Chemistry & Physics

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/macp.201800189. Biodegradable PolymersThe hybrid copolymerization of vinyl monomers with cyclic esters endows the formed copolymers new features, such as biodegradability and functionality. However, the recently reported hybrid copolymerizations are mainly based on polar vinyl monomers and cyclic esters catalyzed by organocatalysts. The copolymerization of non-polar vinyl monomers with cyclic esters is still a challenge. In this work, the copolymerization of β-butyrolactone (β-BL) with styrene catalyzed by B(C 6 F 5 ) 3 in the absence of coinitiators is reported. The density functional theory studies suggest the formation of zwitterion between β-BL and B(C 6 F 5 ) 3 . It is found that β-BL and styrene are concurrently copolymerized through the macro-zwitterion intermediates. The obtained copolymers are carefully examined by 1 H NMR, 2D 1 H-13 C HMBC, differential scanning calorimetry, thermogravimetric analysis, hydrolysis experiments, as well as Brady's reagents.

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Determination of carbonyl groups in polymers by reaction with 2,4-dinitrophenylhydrazine

Cited by 21 publications

References 19 publications

Chemical derivatization in electron spectroscopy for chemical analysis of surface functional groups introduced on low-density polyethylene film

Chemical derivatization in electron spectroscopy for chemical analysis of surface functional groups introduced on low-density polyethylene film

Forensic Investigation of Formaldehyde in Illicit Products for Hair Treatment by DAD‐HPLC: A Case Study

Zwitterionic Copolymerization of β‐Butyrolactone with Styrene

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