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In-process estimation of cellulose fraction by in-line near-infrared (NIR) spectroscopy during melt compounding of polypropylene/cellulose composites
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DOI：10.1016/j.polymertesting.2026.109291.png)
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Abstract
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• In-line NIR quantified cellulose during PP/cellulose melt compounding. • One optical setup measured both neat PP and opaque cellulose composites. • PLSR predicted cellulose fraction with R2 = 0.995 and RMSE = 0.69 wt%. • Changeover behavior was quantified by a first-order plus dead-time model.
Keywords:
In-line NIR spectroscopy
Melt compounding process
Polypropylene/cellulose composites
Composition estimation
Partial least squares regression
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6
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6.4K
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