PBAT/PLA薄膜在受控堆肥条件下的生物降解性能  

Biodegradability of PBAT/PLA Films under Controlled Composting Conditions

作　　者：徐伟 赵新亭 尤里武 王力 张天锋 丁晓锋 吐尔逊·斯拉依丁 郭春云 XU Wei;ZHAO Xinting;YOU Liwu;WANG Li;ZHANG Tianfeng;DING Xiaofeng;TURSON Silayiding;GUO Chunyun(Xinjiang Turpan Natural Environment Experimental Research Center,Turpan 838000,China;Xinjiang Ecological Environment Monitoring Station,Urumqi 830000,China;College of Chemical Engineering,Xinjiang University,Urumqi 830046,China)

机构地区：[1]新疆吐鲁番自然环境试验研究中心,新疆吐鲁番838000 [2]新疆维吾尔自治区生态环境监测总站,新疆乌鲁木齐830000 [3]新疆大学化工学院,新疆乌鲁木齐830046

出　　处：《塑料工业》2024年第1期123-128,共6页China Plastics Industry

基　　金：中央引导地方科技发展专项项目(2060503);吐鲁番市科技服务创新平台项目(2022006)。

摘　　要：为了快速检测聚己二酸—对苯二甲酸丁二醇酯/聚乳酸(PBAT/PLA)薄膜的生物降解性能,参考GB/T 19277.1—2011的检测方法,针对堆肥水分含量对实验进行了优化,研究了薄膜在受控堆肥条件下的最终需氧生物分解能力。结果表明,45%的含水量最有利于堆肥降解实验的进行,以腐熟堆肥为接种物建立的测试方法满足标准要求,所测试薄膜的最终生物分解率和相对生物分解率均大于90%,可完全降解。堆肥实验过程中薄膜的累积二氧化碳(CO_(2))释放量、生物分解率、相对生物分解率随时间的变化情况一致,随时间变化先增大后减小,最后趋于稳定,呈S型曲线。“迟滞—生物分解—平稳”三阶段的表现与微生物的生命活动有关。In order to quickly detect the biodegradability of poly(butylene adipate-co-terephthalate)/polylactic acid(PBAT/PLA)films,this paper refered to the testing method of GB/T 19277.1—2011.The experiment was optimized based on the compost moisture contents,and the final aerobic biodegradation ability of the films under controlled compost conditions was studied.The results show that 45%water content is the most conducive to the compost degradation experiment.The test method based on the decomposed compost as inoculant could meet the standard requirements.The final and relative biodecomposition rates of the tested films are both greater than 90%and could be completely degraded.During the composting experiment,the cumulative CO_(2)release,biodecomposition rate and relative biodecomposition rate of the films are consistent with the changes of time,which first increase and then decrease,and finally tend to be stable,showing an S-shaped curve.The performance of the three stages of“retardation-biodecomposition-stability”is related to the life activities of microorganisms.

关 键 词：聚己二酸—对苯二甲酸丁二醇酯 聚乳酸 堆肥降解 生物降解性能 

分 类 号：TB484.3[一般工业技术—包装工程]