Characterization of historical leather bookbindings by various thermal methods (TG/MS, Py-GC/MS, and micro-DSC) and FTIR-ATR spectroscopy

The need to increase the productivity and capacity of power transformers has conditioned the production of insulating papers of a higher thermal class. For this purpose, various techniques of solid insulation modification were applied, which enable the increase in thermal and chemical stability of the insulating paper during the operation of the transformer. The applied additives, primarily dicyandiamide (DICY) and polyacrylamide (PAM), are one form of cellulose modification in the final stages of paper production. A significant difference between the papers is the nitrogen content in the paper, which is characterized by the addition of amine compounds (additives). The paper presents the application of infrared spectroscopy with totally attenuated reflection (FTIR-ATR) in the characterization of paper samples. The aim is to observe the difference between regularly kraft and thermally upgraded paper reflected in the presence or absence of characteristic functional groups for additives. The strip identification at 2194-2154 cm-1 confirmed the presence of dicyandiamide additives (DICY) in the spectrum of the sample of thermally upgraded paper, which is different compared with the spectrum of regular kraft paper.

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Review for "13 C Solid State NMR complemented by ATR-FTIR and micro DSC to study modern collagen based material and historical leather"

10.1002/mrc.5024/v2/review1 ◽

2020 ◽

Keyword(s):

Solid State ◽

Solid State Nmr ◽

Historical Leather ◽

Micro Dsc

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Investigation of Reaction Conditions on Alcohol-Thermal Synthesis of ZnO Nanoparticles

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.273-276.198 ◽

2008 ◽

Vol 273-276 ◽

pp. 198-203

Author(s):

A. Esmaielzadeh Kandjani ◽

Mohammad Reza Vaezi ◽

Ali Shokuhfar ◽

M. Farzalipour Tabriz

Keyword(s):

Zno Nanoparticles ◽

Uv Light ◽

Sol Gel ◽

Ammonium Bromide ◽

X Ray Diffraction ◽

Light Emitters ◽

Thermal Methods ◽

Thermal Synthesis ◽

Poly Ethylene

ZnO nanoparticles because of their interesting properties and various morphologies, has become one of the most attractive nanomaterials for research objectives. Its significant properties has made it applicable in UV-Light emitters, varistors, transparent high power electronics, gas sensors, etc., [1]. Many approaches have been used to obtain ZnO nanoparticles, including: Hydrothermal [2], Solvothermal [3], Reverse micelles [4], Sol-Gel [4], Sonochemical [5], and Chemical Bath Deposition [6], etc. Among these, hydrothermal and alcohol-thermal methods have been extremely investigated. In this paper, buthanol as a solvent is used for synthesis of Zinc oxide at 130°C and 150°C at different reaction periods. Also the effects of different surfactants including: N_Cetyl_N,N,N,_trimethyl ammonium bromide (CTAB), Poly vinyl pyrolidon-K90 (PVP), Poly ethylene glycol-15000 (PEG) on obtained morphologies were investigated extremely. X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) were used for characterization of nanoparticles.

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