期刊
INDUSTRIAL CROPS AND PRODUCTS
卷 164, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.indcrop.2021.113377
关键词
Black liquor; Castor oil; Biopolyol; Polyurethane foams
资金
- CAPES - Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (Brazil) [88887.310560/2018-00]
- CNPq-Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (Brazil) [406078/2018-1]
This study successfully synthesized a biopolyol that can be used to prepare polyurethane foams, derived from black liquor and glycerol. The study found that the source of biopolyol and the amount of blowing agent can affect the morphology of the foam and the mechanical behavior of the material.
This study presents the development and characterization of polyurethane foams synthesized with biopolyols obtained using an industrial residue, the black liquor (BL), and glycerol (GL), in two grades of purity: high purity (P.A.), and crude (blond) from biodiesel production. For the biopolyol synthesis, GL with different purity grades and BL (0 and 15 wt.%) were reacted with castor oil. The glycerolysis with BL was performed without the use of catalyst due to the high basicity of black liquor, which was used without prior purification, reducing the use of chemical inputs. The biopolyols produced were characterized and applied to obtain polyurethane foams (PUFs) using water as a chemical blowing agent. The foams were evaluated by Fourier transform infrared spectroscopy, scanning electron microscope, apparent density, insoluble fraction, thermogravimetric analysis and mechanical resistance. The results showed that the biopolyol source and amount of blowing agent influenced the morphology of the foam, and therefore, the mechanical behavior of the polymeric material. The biopolyol produced with the black liquor and glycerol P.A. (BP-1) presented the highest hydroxyl index (593 mg KOH/g) and the foams obtained showed apparent densities in the range of 14.6?75.9 kg/m3. Thereby, this work has shown that it is possible to prepare biopolyols that can be used in the production of polyurethane foams from the use of black liquor and other renewable materials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据