Controlled release study of phenol formaldehyde based microcapsules containing various loading percentage of core cypermethrin at different agitation rates

Karandikar, Pravin S.; Rajput, Jamatsing D.; Bagul, Suresh D.; Gite, Vikas V.

doi:10.1007/s00289-018-2508-6

Cited by 4 publications

(1 citation statement)

References 17 publications

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“…[27][28][29] The phenol shows the characteristic bands of aromatic and hydroxide functional groups. The characteristic peaks are at 3040 cm À1 (C-H stretching of phenyl ring), 1594 cm À1 , 1498 cm À1 , and 1471 cm À1 (-C=C stretching in phenyl ring), 1219 cm À1 (-C-O stretching), and 720 cm À1 (C-H rocking) [30][31][32] . In the FTIR spectra of PF resin (Resin 3), the presence of all the characteristic peaks of its precursors with a slight shift in peak position confirms the polymerization reaction.…”

Section: Ftir Spectramentioning

confidence: 99%

Fourier transform infra-red spectroscopy to determine formaldehyde to phenol ratio of phenol formaldehyde resole

Pullichola

Varghese

Gopalakrishnapanicker

et al. 2022

Journal of Elastomers & Plastics

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A model has been proposed to determine the formaldehyde (F) to phenol (P) ratio [F/P] of resole with the help of Fourier transform infra-red spectroscopy. The study is based on the comparison of IR absorbance of the dominant peaks corresponding to the formaldehyde and phenol contents in the resin. This study can be of much use in adhesive coating industries to employ the F/P ratio as a quality tool as well as for competition resin benchmarking. It can also be utilized for understanding the kinetics of the reactions between phenol and formaldehyde. Detailed qualitative analyses of various resoles with different formulations have been discussed in this paper, which can be of potential help for the standard analysis of the commercial resins. The validation of results confirms that the most fitting model offers an error less than 7%. Interestingly, this model can also be applied with blends of different Phenol formaldehyde resoles.

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