Photoacoustic characterization of bleached wood pulp and finished papers

被引：24

作者：

Lima, CAS ^{[1
]}

Lima, MBS

Miranda, LCM

Baeza, J

Freer, J

Reyes, N

Ruiz, J

Silva, MD

机构：

[1] Univ Concepcion, Fac Ciencias Fis & Matemat, Dept Fis, Lab Termo Opt, Concepcion 4009, Chile

[2] Univ Concepcion, Fac Ciencias Quim, Lab Recursos Renovables, Concepcion 4009, Chile

[3] Inst Nacl Pesquisas Espaciais, BR-12201 Sao Jose Dos Campos, Sao Paulo, Brazil

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2000年 / 11卷 / 05期

关键词：

thermal diffusivity; photoacoustic effect; chemical bleaching; wood pulp; paper;

D O I：

10.1088/0957-0233/11/5/309

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have carried out photoacoustic measurements of the thermal diffusivity on samples of laboratory produced chemically bleached wood pulps, as well as on samples of several commercially available papers. Our results for bleached pulps indicate that the thermal diffusivity is correlated to each of the chemical bleaching controlling parameters (the kappa number, viscosity and brightness) measured during distinct phases of the bleaching processes. Also, the values of the thermal diffusivities for the commercial papers were found to be adequate for their end uses. It tumid out that photoacoustic measurements can be a valuable research laboratory and/or industrial plant tool for comparing and controlling the properties of pulp and paper and for evaluating the effects of processing parameters upon these properties.

引用

页码：504 / 508

页数：5

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