Identification of Pyrolysis Reaction Model of Linear Low Density Polyethylene (LLDPE)

この論文にアクセスする

この論文をさがす

著者

    • KIM Seungdo
    • Department of Environmental Sciences and Biotechnology, Hallym University
    • KAVITHA D.
    • Department of Environmental Sciences and Biotechnology, Hallym University

抄録

This paper described how to estimate the Arrhenius parameters as well as the pyrolysis reaction model of LLDPE from isothermal kinetic data. We used a custom-made thermobalance that is capable of monitoring a weight decrease with time under pure static condition and performed six isothermal kinetic experiments at 713, 718, 723, 728, 733, and 738 K that were chosen within a temperature range (710–740 K) where main decompositions were observed from non-isothermal kinetic results. Comparing experimental reduced-time-plots (RTPs) with theoretical ones, the pyrolysis reaction model of LLDPE is accounted for by "Avrami–Erofeev" model in the investigated temperature region, allowing its functional form to be 2(1 − α)[−ln(1 − α)]<SUP>1/2</SUP>. It is, hence, expected that the reaction order model adopted by the previous studies without verification is inappropriate to represent the pyrolysis reaction model of LLDPE. Bubble nucleation may be a major pyrolysis reaction mechanism of LLDPE. As heat is applied, the LLDPE is melted. Volatiles may be accumulated inside the melt until reaching a critical concentration where bubble nucleation sets forth. The rates of heat, mass, or momentum transfer in the LLDPE melt and its physico-chemical properties (especially viscosity) play an important role in characterizing the thermal decomposition kinetics of LLDPE.

収録刊行物

  • Chemistry letters  

    Chemistry letters 35(4), 446-447, 2006-04-05 

    The Chemical Society of Japan

参考文献:  9件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10018125938
  • NII書誌ID(NCID)
    AA00603318
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    03667022
  • データ提供元
    CJP書誌  J-STAGE 
ページトップへ