Results 1 to 10 of about 326 (101)
Polymer Testing, 2021 Nitrocellulose (NC) is a polymer of great interest in the aerospace and paint/coating fields. However, there are gaps regarding quantitative analysis. Fast and accurate methodologies for the quality control of raw materials are limited.
Rita de Cássia Lazzarini Dutra +2 more
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Quantification by FT-IR (UATR/NIRA) of NBR/SBR Blends [PDF]
Polimeros, 2018 Rubber blends are important materials in automotive industry, as well as in other sectors. However, there are implications when suitable use of a polymer in an artifact is not made. In the automotive area, for example, the use of an elastomer without the
Rita de Cássia Lazzarini Dutra +2 more
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Characterization of Additives in NR Formulations by TLC-IR (UATR) [PDF]
Polimeros, 2018 It is a well-established fact that rubber accelerator is essential to provide solution in different sectors. However, there is a reversal process which can reduce the material performance.
Rita de Cássia Lazzarini Dutra +2 more
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UATR and NIRA Evaluation in the Quantification of ATBC in NC Blends [PDF]
Polimeros, 2018 The paint industry requires rapid and accurate methodologies of raw materials qualitiy controls. For example, the evaluation of the suitable ratio of binary mixtures of polymer/plasticizer such as nitrocellulose (NC)/acetyl tributyl citrate (ATBC) must ...
Rita de Cássia Lazzarini Dutra +2 more
exaly +7 more sources
Determinação por FT-IR de transmissão e reflexão (UATR) de etileno e propileno em EPDM [PDF]
Polimeros, 2014 Foi desenvolvida uma metodologia para a determinação dos teores de etileno (ET) e propileno (P) em amostras de borracha (elastômero puro, crua e vulcanizada), à base do copolímero de etileno-propileno-dieno monômero (EPDM), por espectroscopia no ...
Elizabeth da Costa Mattos +1 more
exaly +7 more sources
Técnicas FT-IR (PAS, UATR e Objetiva ATR) Aplicadas à Caracterização de EPDM Modificada com Plasma [PDF]
Polimeros, 2014 Técnicas FT-IR (UATR, PAS e MIC, com objetiva ATR) foram escolhidas para a caracterização da superfície da borracha de EPDM vulcanizada, após tratamento em plasma de Ar/O2 e N2/H2/Ar gerado em micro-ondas.
Elizabeth da Costa Mattos +2 more
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Separação e identificação de aditivos em tinta por TLC-IR/ UATR e extração seletiva [PDF]
Polimeros, 2016 Resumo Vários aditivos são incorporados nas formulações de tintas para evitar defeitos no revestimento e melhorar o desempenho nas aplicações, constituindo, desse modo, um sistema complexo.
Rita de Cássia Lazzarini Dutra +2 more
exaly +6 more sources
TLC/IR (UATR) Off-Line Coupling for the Characterization of Additives in EPDM Rubber Compositions [PDF]
Polimeros, 2016 The knowledge of the components that constitutes a rubber composition is important to justify the properties of the final device, particularly when it comes to elastomeric compositions used in the aerospace industry. The development of methodologies that
Elizabeth da Costa Mattos +1 more
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Análise por FT-IR (UATR e PAS) de Microbicidas em Filmes Poliméricos de Tintas Comerciais
Polimeros, 2014 Este trabalho mostra a avaliação de duas técnicas de espectroscopia no infravermelho por transformada de Fourier (FT-IR), Universal Reflexão Total Atenuada (UATR) e Detecção Fotoacústica (PAS), para a caracterização dos microbicidas, OIT, carbendazim e ...
Elizabeth da Costa Mattos +2 more
exaly +6 more sources
FT-IR Methodology (Transmission and UATR) to Quantify Automotive Systems [PDF]
Polimeros, 2018 When using Fourier transform infrared spectroscopy (FT-IR) under the qualitative aspect for characterization of polymer blends, often a simple identification of each one of the existing polymers in the blend does not justify the material failure since ...
Elizabeth da Costa Mattos
exaly +5 more sources