Thermal and catalytic degradation of poly(butylene terephthalate)
A comparative study was conducted into the thermal and catalytic degradation of poly(bthylene terephthalate) (PBT) at atmospheric pressure. PBT weight loss of thermal degradation was affected little by PBT particle size between the temperature 320 ℃ and 380 ℃ but affected tremendously in the temperature range of 360-380 ℃. Metal chlorides were more active than the other three groups of tested catalysts in PBT catalytic degradation. The most active one in metal chlorides was copper (II) chloride which increased the percentage weight loss of PBT more than 100% in comparison with the result of thermal degradation at 360 ℃ for 30 min. Mixing PBT with catalyst by impregnation leaded to a higher extent of PBT degradation than by physical mixing. The results of catalytic degradation of PBT over CuCl2 showed the effect of temperature on the percentage weight loss was increased steadily between 320 ℃ and 380 ℃ and different from the results of thermal degradation. The catalytic degradation could also shorten the time to obtain the same percentage weight loss of PBT than in thermal degradation. The optimal weight ratio of catalyst/PBT was 0.1.
Shwu-Jer Chiu Yi-Shiuan Wu
Department of Chemical Engineering, Ming Chi University of Technology, 24301 Taishan, Taipei, Taiwan
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）