کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8099329 | 1522077 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Controllable degradation of polyurethane elastomer via selective cleavage of CO and CN bonds
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Controllable degradation of polyurethane elastomer via selective cleavage of CO and CN bonds Controllable degradation of polyurethane elastomer via selective cleavage of CO and CN bonds](/preview/png/8099329.png)
چکیده انگلیسی
The degradation and recovery of waste polyurethane materials have confronted enormous challenge. Controllable degradation of polyurethane elastomer is developed via selective cleavage of CO of urethane linkages and CN bonds. It was founded that the selective cleavage of carbon-heteroatom bonds could be efficiently performed in 70% ZnCl2 aqueous solution. The transition metal Zn2+ coordinated with N and O atoms due to their unshared electron pairs. The CO of urethane linkages and CN bonds were readily cleaved using ZnCl2 as catalysts at 140 °C for 2 h. However, the CC bonds and COC of ether linkages as framework structure remain intact in the degradation process. Eventually, the high-value-added chemicals including 2,4-diaminotoluene, polytetramethylene ether glycol (PTMEG) and 3,3â²-dichloro-4,4â²-diaminodiphenylmethane (MOCA) were retrieved via selective cleavage of CO of urethane bonds and CN bonds.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 176, 1 March 2018, Pages 873-879
Journal: Journal of Cleaner Production - Volume 176, 1 March 2018, Pages 873-879
نویسندگان
Yuqi Wang, Hongyan Song, Hui Ge, Junwei Wang, Yingxiong Wang, Shiyu Jia, Tiansheng Deng, Xianglin Hou,