| 废聚酯醇解条件的研究 |
| |
| 引用本文： | 席国喜,邢新艳,孙晨.废聚酯醇解条件的研究[J].环境科学研究,2004,17(5):38-40. |
| |
| 作者姓名： | 席国喜 邢新艳 孙晨 |
| |
| 作者单位： | 河南师范大学,化学与环境科学学院,河南省高等学校环境科学与工程重点学科开放实验室,河南,新乡,453002 |
| |
| 基金项目： | 河南省自然科学基金资助项目(984033100) |
| |
| 摘 要： | 研究了废PET(聚对苯二甲酸乙二醇酯)的醇解条件对产物的羟值及平均分子量的影响,表明在196～198℃时,m(乙二醇) m(PET)=2,催化剂醋酸锌用量为PET质量的1%,醇解3～3 5h,聚酯PET降解很彻底,产物羟值(以KOH计)可达368mg g以上,平均分子量在305以下,主要成分是对苯二甲酸二乙二醇酯(BHET)单体及其低聚物。DSC和IR验证了产物的组成。
|
| 关 键 词： | 醇解 废聚酯 乙二醇 |
| 文章编号： | 1001-6929(2004)05-0038-03 |
| 收稿时间： | 2003/11/25 0:00:00 |
Study on Glycolysis Condition of Waste Poly(Ethylene Terephthalate) |
| |
| XI Guo-xi,XING Xin-yan and SUN Chen.Study on Glycolysis Condition of Waste Poly(Ethylene Terephthalate)[J].Research of Environmental Sciences,2004,17(5):38-40. |
| |
| Authors: | XI Guo-xi XING Xin-yan and SUN Chen |
| |
| Institution: | Key Open Laboratory of Environmental Science and Engineering of Education Commission of Henan, College of Chemistry and Environmental Science, Henan Normal University, Xinxiang453002, China |
| |
| Abstract: | The influences of glycolysis conditions of waste poly(ethylene terephthalate) (PET) on the hydroxyl number values and average molecular weight of glycolysis products were investigated. If at 196～198 ℃, ethylene glycol and PET weight ratio was 2, the glycolysis time was 3～3.5 h, and 1% zinc acetate was used as catalyst, PET was thoroughly glycolysed and the glycolysis products were obtained with the hydroxyl number values above 368 mg/g and the average molecular weight below 305. Bis-2-hydroxyethyl terephthalate (BHET) monomer and its oligomers were predominant glycolysis products. The products were characterized by DSC and IR spectrum. |
| |
| Keywords: | glycolysis poly(ethylene terephthalate) ethylene glycol |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《环境科学研究》浏览原始摘要信息 |
| 点击此处可从《环境科学研究》下载免费的PDF全文 |
|
