试样尺寸对生物降解率试验周期的影响  

The Influence of Sample Size on the Biodegradation Rate Test Cycle

作　　者：谈翔 林黛琴 聂绍丽 盛积隆 曾莉 钟永红 张涛 TAN Xiang;LIN Daiqin;NIE Shaoli;SHENG Jilong;ZENG Li;ZHONG Yonghong;ZHANG Tao(Jiangxi General Institute of Testing and Certification Institute of Inspection and Testing for Industrial Products,Nanchang Jiangxi 330052,China)

机构地区：[1]江西省检验检测认证总院工业产品检验检测院,江西南昌330052

出　　处：《江西化工》2024年第2期68-71,共4页Jiangxi Chemical Industry

基　　金：国家市场监督管理总局技术保障专项项目(2022YJ24)。

摘　　要：本文采用聚乳酸吸管为研究对象,通过采用人工裁剪、高速粉碎机粉碎、冷冻研磨仪粉碎等制备方式,将试样制成三种尺寸,其中1号试样为1cm×1cm的片状物、2号试样为1.5 mm×2.0 mm的片状物,3号试样直径110μm的颗粒,并对三种尺寸的试样进行了生物分解率测试。结果表明,试样的尺寸大小与所需的试验时间成反比,2号试样及3号试样达到91%分解率所需的试验时间相较于1号试样分别减少了7 d和13 d。A polylactic acid straw was used as the research object,and the sample was made into three sizes by manual cutting,high-speed grinder crushing,and frozen grinder crushing.Sample 1 is 1cm×1cm sheet shape.Sample 2 is 1.5mm×2.0mm sheet shape.Sample 3 has a diameter of 110μm particles.Three sizes of samples were subjected to biodegradation rate testing.The results are as follows:The size of the sample is inversely proportional to the required test time.The test time required for sample 1 and sample 2 to achieve a 91%decomposition rate was reduced by 13 days and 7 days respectively compared to sample 3.

关 键 词：生物分解率 试验时间 试样尺寸 聚乳酸 

分 类 号：TB302[一般工业技术—材料科学与工程]