Thermal Degradation Kinetics of Polyurethane/polybenzoxazine Alloys

摘要：

Recently, the alloys of polyurethane (PU)/polybenzoxazine (PBA-a) have been studied due to many interesting properties; however, the thermal degradation kinetics of the system has not been mentioned before. In this study, the degradation temperatures of the obtained alloys were determined using Thermogravimetric Analyzer (TGA) with various heating rate of 10, 20, 25℃/min. The polyurethane/polybenzoxazine alloys at the weight ratios of 30/70 were prepared for determination due to its highest degradation temperature. The first derivative curves of the thermograms (DTG) were deconvoluted with Peakfit program. The results reveal three main sub-stages of degradation. According to Arrhenius Eq., the activation energies (Ea) of each degradation substage were determined using Kissinger model and FynnWall Ozawa model.

关键词： Thermal Degradation Kinetics Polyurethane Polybenzoxazine Alloys

作者: Sunan Tiptipakorn Sarawut Rimdusit Phiriyatorn Suwanmala Kasinee Hemvichian

作者单位: Department of Chemistry,Faculty of Liberal Arts and Science,Kasetsart University,Kamphaeng Saen,Nako Department of Chemical Engineering,Faculty of Engineering,Chulalongkorn University,Bangkok,10330 Tha Thailand Institute of Nuclear Technology,Ongkarak,Nakorn-nayok,26120 Thailand

会议类型: 国际会议

会议名称: the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)

会议地点: 三亚

会议语种:英文

页码: 439-443

在线出版日期: 2011-03-25（万方平台首次上网日期，不代表论文的发表时间）