Abstract
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 \({\bar M_n}\) 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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Funded by the National Science Foundation of China (No. 51263006), the Ministry of Education Ph D Advisor Class Special Fund (No. 20134601110004), the Hainan Province of Key Projects (ZDXM20130086), the Hainan Province International Science and Technology Cooperation Specific (No. KJHZ2014-02), and the Hainan Province Natural Science Foundation (No. 314074)
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Zhou, W., Fu, W. & Zhang, Y. Liquefaction of Banana Pseudo-stem and Preparation of Polyurethane Adhesive from Liquefied Products. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 33, 1437–1443 (2018). https://doi.org/10.1007/s11595-018-1988-4
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DOI: https://doi.org/10.1007/s11595-018-1988-4