Liquefaction of Banana Pseudo-stem and Preparation of Polyurethane Adhesive from Liquefied Products
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2018年第6期
论文作者：周威 FU Wenxing 张玉苍
文章页码：1437 - 1443
摘 要：Banana pseudo-stem was liquefied in the mixture of polyhydric alcohols of polyethylene glycol（PEG400） and glycerol. Hydroxyl value of liquefied products ranged from 294.8 to 370.2 mg KOH/g and Mn was about 430. Liquefied products（LBPP） could be used as raw materials for polyurethane by reacting with 4, 4’-diphenylmethane diisocyanate（4, 4’-MDI） and PEG400 to synthesize liquefied product-based polyurethane（LBPP-PU） adhesive. To analyze in depth the creation of urethane linkage among LBPP, PEG400 and 4, 4’-MDI, factors which had effects on the residue content were all investigated. They were characterized by FT-IR and TG. The shear strength of LBPP-PU adhesive was improved when decreasing the percentage of the substitution of PEG400 by LBPP. The adhesive strength was obtained from T-peel of aspen/polyurethane adhesive joints, and the maximum lap shear strength（4.40 MPa） was obtained when 16.70% of LBPP was added to the LBPP & PEG400 system.
周威，FU Wenxing，张玉苍
College of Materials and Chemical Engineering, Hainan University
摘 要：Banana pseudo-stem was liquefied in the mixture of polyhydric alcohols of polyethylene glycol（PEG400） and glycerol. Hydroxyl value of liquefied products ranged from 294.8 to 370.2 mg KOH/g and Mn was about 430. Liquefied products（LBPP） could be used as raw materials for polyurethane by reacting with 4, 4’-diphenylmethane diisocyanate（4, 4’-MDI） and PEG400 to synthesize liquefied product-based polyurethane（LBPP-PU） adhesive. To analyze in depth the creation of urethane linkage among LBPP, PEG400 and 4, 4’-MDI, factors which had effects on the residue content were all investigated. They were characterized by FT-IR and TG. The shear strength of LBPP-PU adhesive was improved when decreasing the percentage of the substitution of PEG400 by LBPP. The adhesive strength was obtained from T-peel of aspen/polyurethane adhesive joints, and the maximum lap shear strength（4.40 MPa） was obtained when 16.70% of LBPP was added to the LBPP & PEG400 system.
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