| Revue: | Maderas : ciencia y tecnología |
| Base de datos: | |
| Número de sistema: | 000544757 |
| ISSN: | 0718-221X |
| Autores: | Cássia Viana, Lívia1 Bolzon de Muniz, Graciela Ines1 Gherardi Hein, Paulo Ricardo2 Esteves Magalhães, Washington Luiz3 Carneiro, Mayara Elita1 |
| Instituciones: | 1Universidade Federal do Paraná, Departamento de Engenharia e Tecnologia Florestal, Curitiba, Paraná. Brasil 2Universidade Federal de Lavras-Campus Universitário, Departamento de Ciencias Florestais, Lavras, Minas Gerais. Brasil 3EMBRAPA Florestas, Colombo, Paraná. Brasil |
| Año: | 2016 |
| Periodo: | Jul |
| Volumen: | 18 |
| Número: | 3 |
| Paginación: | 493-504 |
| País: | Chile |
| Idioma: | Inglés |
| Resumen en inglés | The near infrared (NIR) spectroscopy presents it self as an interesting non-destructive test tool as it enables a fast, simple and reliable way for characterizing large samplings of biological materials in a short period of time. This work aimed to establish multivariate models to estimate the crystallinity indices and tensile and burst strength of cellulosic and nanocellulosic films through NIR spectroscopy. NIR spectra were recorded from the films before tensile and bursting strength, and crystallinity tests. Spectral information were correlated with reference values obtained by laboratory procedures through partial least square regression (PLS-R). The PLS-R model for estimating the crystallinity index presented a coefficient of determination in cross-validation (R²cv) of 0,94 and the ratio of performance to deviation (RPD) was 3,77. The mechanical properties of the films presented a high correlation with the NIR spectra: R²p = 0,85 (RPD = 2,23) for tensile and R²p = 0,93 (RPD = 3,40) for burst strength. The statistics associated to the models presented have shown that the NIR spectroscopy has the potential to estimate the crystallinity index and resistance properties of cellulose and nanocellulose films on in-line monitoring systems. |
| Keyword: | Crystallinity index, Mechanical properties, Nanocellulose, NIRS, Pinus sp |
| Texte intégral: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
