Topic
Thermogravimetric analysis
About: Thermogravimetric analysis is a research topic. Over the lifetime, 37248 publications have been published within this topic receiving 862144 citations. The topic is also known as: thermal gravimetric analysis & TGA.
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TL;DR: Using a single improved synthetic process, three different compounds comprising two known phases such as [Cu 3 (BTC) 2 (H 2 O) 3 ] (1), [Cu 2 (OH)(BTC)(H 2O) 2 n H 2 O (2 ) and a new phase [Cu(BTC)-H 2 ) 2 -(H 2 OM) 2 ]· 3H 2 OD (3 ) have been prepared by microwave-irradiation (MW) of identical reaction mixture of Cu(II) salt and trimesic acid, benzene-1,
288 citations
TL;DR: In this article, nanocellulose reinforced polyvinyl alcohol (PVA) composite films were prepared by the reinforcement of nanocells into a PVA matrix at different filler loading levels and subsequent film casting.
Abstract: Nanocellulose was prepared by acid hydrolysis of microcrystalline cellulose (MCC) at different hydrobromic acid (HBr) concentrations. Polyvinyl alcohol (PVA) composite films were prepared by the reinforcement of nanocellulose into a PVA matrix at different filler loading levels and subsequent film casting. Chemical characterization of nanocelluloses was performed for the analysis of crystallinity (Xc), degree of polymerization (DP), and molecular weight (Mw). The mechanical and thermal properties of the nanocellulose reinforced PVA films were also measured for tensile strength and thermogravimetric analysis (TGA). The acid hydrolysis decreased steadily the DP and Mw of MCC. The crystallinity of MCC with 1.5 M and 2.5 M HBr showed a significant increase due to the degradation of amorphous domains in cellulose. Higher crystalline cellulose showed the higher thermal stability than MCC. From X-ray diffraction (XRD) analysis, nanocellulose samples showed the higher peak intensity than MCC cases. Reduction of MCC particle by acid hydrolysis was clearly observed from scanning electron microscope (SEM) images. The tensile and thermal properties of PVA composite films were significantly improved with the increase of the nanocellulose loading.
287 citations
TL;DR: In this article, the authors deal with preparation, characterization, thermal properties and thermal reliability of n- eicosane microcapsules as novel phase change material (PCM) for thermal energy storage.
285 citations
TL;DR: In this article, a wide angle X-ray analysis (WAXS) was performed on PLA and PCL nanocomposites and the results showed a good dispersion level with both polymeric matrices, whilst the highest thermo-mechanical improvements were reached depending on type of clay.
285 citations
TL;DR: Thermogravimetric analysis (TGA) suggests that the Chi-BMIM.BF(4)-Hb composite has higher thermal stability than Chi-Hb itself and was characterized by UV-visible spectra, indicating excellent stability in solution and good biocompatibility for protein.
284 citations