为研究不同环境中秸秆/大豆分离蛋白(SPI)改性脲醛树脂复合材料花盆的降解性能,采用土壤掩埋(SB)和户外曝露(OE)2种方式对试样进行降解处理,通过力学性能、质量损失和吸水性测试,热重-红外联用(TG-FTIR),SEM和EDS能谱对花盆的结构和性能进行了研究.结果显示:与对照组(US)相比,经SB和OE降解处理12个月后,花盆的抗拉强度分别下降了36.51％和19.92％,抗拉弹性模量分别下降了9.38％和3.92％,断裂伸长率分别减少了41.36％和36.61％,质量损失率分别为13.74％和4.69％,且试样吸水性均增强.TG-FTIR联用分析表明:降解处理后花盆的热解脱气条件变得温和,最大热解峰延后.SEM扫描观察发现:SB处理后花盆表面腐蚀度及形貌变化大于OE处理后的,两者表面C和N含量均显著下降,表明秸秆/SPI改性脲醛树脂复合材料花盆经SB和OE处理后均发生不同程度降解,SB处理后花盆的降解速率高于OE处理后的.
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