Degradability of bamboo shoot shell /UF modified starch adhesive composites

doi:10.3969/j.issn.1000-2006.201610029

ZHANG Zhiwei, GUAN Mingjie, LIU Yuansong

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2017, Vol. 41 ›› Issue (04) : 160-166.

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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2017, Vol. 41 ›› Issue (04) : 160-166. DOI: 10.3969/j.issn.1000-2006.201610029

Degradability of bamboo shoot shell /UF modified starch adhesive composites

ZHANG Zhiwei, GUAN Mingjie^*, LIU Yuansong

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Abstract

【Objective】Evaluate the degradability of bamboo shoot shell/urea formaldehyde(UF)-modified starch adhesive composites under different conditions.【Method】The composites were degraded by outdoor exposure, soil burying, aqueous medium, and cellulose tests.The mass loss rate was determined during the degradation process.There lative crystallinity, chemical structure and microstructure of the composites after degradation were analyzed by X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FTIR), and scanning electron microscope(SEM)respectively. 【Result】The final mass loss rates of the composites after the 4 degradation conditions were 2.1%, 21.7%, 25.7% and 29.9%. XRD analysis showed that the relative crystallinities of the composites after degradation under the 4 conditions increased to 46.4%, 49.7%, 53.2% and 55.4%, respectively, as compared with that(43.9%)of the control group. FTIR analysis indicated that the characteristic absorption peak values of the composites decreased on different degree after degradation under the 4 conditions. SEM analysis showed that the composite surface became rough and that bamboo shoot shell surface under went degrees of damage; in particular,the bamboo shoot shell showed the most obvious change after degradation under the cellulose condition.【Conclusion】Bamboo shoot shell/UF-modified starch adhesive composites showed good biodegradability under the soil, aqueous medium and cellulose conditions.

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ZHANG Zhiwei, GUAN Mingjie, LIU Yuansong. Degradability of bamboo shoot shell /UF modified starch adhesive composites[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2017, 41(04): 160-166 https://doi.org/10.3969/j.issn.1000-2006.201610029

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