摘要
小波变换能够成功地滤除复杂光声光谱信号的高频噪音和不规则基线。将小波变换的分析方法应用于 PVC降解的光声光谱中 ,准确地测定了 PVC降解产生的共轭多烯的分布 ,进而讨论了不同 PVC热稳定剂、不同时间对降解的影响 。
Wavelet transform can be used successfully to filter the noise and the irregular baseline in complicated photoacoustic(PA) spectra. In this paper, PA spectra combined with wavelet transform provides an objective and accurate method to determinate the polyene distribution of degraded PVC. The influence of degradation by different PVC thermal stablizers, different stages were discussed. The results were satisfactory.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2000年第5期153-155,共3页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目
