An Investigation on Polypropylene Degradation in Supercritical Water Adding Benzoyl Peroxide

被引：0

作者：

苏磊 ^{[1
]}

吴学华 ^{[2
]}

刘秀茹 ^{[3
]}

陈丽英 ^{[3
]}

陈克宇 ^{[4
]}

洪时明 ^{[3
]}

机构：

[1] Laboratory of High Pressure Physics,Southwest Jiaotong University,Chengdu 610031,China Department of Physics,Zhengzhou University of Light Industry,Zhengzhou 450002,China

[2] Laboratory of High Pressure Physics,Southwest Jiaotong University,Chengdu 610031,China College of Science,Kunming University ot Science and Technology,Kunming 650093,China

[3] Laboratory of High Pressure Physics,Southwest Jiaotong University,Chengdu 610031,China

[4] Department of Polymer Science and Technology,Sichuan University,Chengdu 610065,China

来源：

ChineseJournalofChemicalEngineering | 2005年 / 06期

基金：

中国国家自然科学基金;

关键词：

supercritical water; polypropylene degradation; benzoyl peroxide;

D O I：

暂无

中图分类号：

O631.5 [聚合反应、缩聚反应];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effect of benzoyl peroxide (BPO) on polypropylene (PP) degradation in supercritical water was investigated with the aim of developing a process for recycling of waste plastics. A series of experiments with and without BPO were carried out at temperatures of 653 K and 673 K under pressure about 26 MPa for 30, 75 and 120 min respectively. Products were analyzed by an Ostward-type viscometer, gas chromatography and spectrometry (GC/MS) etc. The results indicated that mean molecular weight of the samples decreased greatly along with the time elapsing or with the temperature increasing, and PP was decomposed to aliphatic and cycloparaffinic hydrocarbons but a few benzenoid hydrocarbons. By comparing the experiments with and without BPO, it was made clear that BPO is an effective additive on PP degradation in supercritical water.

引用

页码：845 / 848

页数：4