지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2003.1
- 수록면
- 0 - 0 (0page)
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This research was carried out to investigate the pyrolysis kinetics of agricultural films(APFs) : low density polyethylene(LDPE), high density polyethylene(HDPE), ethylene vinylacetate(EVA), and polyvinyl chloride(PVC) films. Thermogravimetric analysis(TGA) was performed to elucidate their pyrolysis kinetics under nitrogen atmosphere. The PE-APF demonstrated a single decomposition reaction pattern, whereas the EVA- and PVC-APF exhibited complex reaction patterns. The EVA-APF was consecutively decomposed via two stages: (1) stoichiometric conversions of acetic acid(AA) and polyene and (2) thermal decomposition of polyene competitively into gas, oil, and char. A consecutive two-stage process may represent the pyrolytic degradation of PVC-AFP. The first-stage may be accounted for by dehydrochlorination and decomposition of plasticizers and consequently, intermediates of polyene chains may be produced. The thermal degradation of the intermediates may be responsible for the second-stage reaction. The pyrolysis kinetics of the PE- and EVA-APF demonstrated a similar kinetic pattern to those of the pure PE and EVA, implying that additives were rarely contained or the effects of additives might be negligible. However, the pyrolysis kinetics of PVC-APF was quite different from that of pure PVC. It is expected that the influence of additives on the dehydrochlorination kinetics of PVC-APF is likely to be significant. Its onset temperature of dehydrochlorination was lowered dramatically. The shift pattern of the second dehydrochlorination peak was more apparent. Therefore, two peaks of DTG(Derivative Thermogravimetry) curve within the region of dehydrochlorination reaction that are observed for DTG curve of pure PVC were merged together.
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