How can you identify HDPE from FTIR?
This page summarizes the recurring FTIR evidence reported for HDPE, including the most frequent peaks, supporting functional groups, and literature-backed interpretation patterns. It is a structured evidence page, not a claim of automatic single-spectrum certainty.
Backed by 13 cited sources
Quick answer
HDPE is usually reported with a recurring pattern of peaks and functional-group evidence. The most useful approach is to cross-check at least two characteristic peaks before treating it as a match, then verify whether the full spectrum still fits the same material family.
Peak interpretation
Possible materials / groups
| Grup funcțional | Dovezi |
|---|---|
| Alkyl C-H | 21 |
| Methacrylate | 10 |
| Acetate | 10 |
| Hydroxyl (O-H) | 8 |
| Aromatic ring | 8 |
| Carboxyl (COOH) | 8 |
| Carbonyl (C=O) | 7 |
| Methoxy (OCH3) | 6 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of HDPE, repeated peak positions, and repeated functional-group associations. A strong material hypothesis should still be supported by multiple peaks that agree with each other, not by one headline band alone.
Real-world usage
This page is designed for polymer identification, incoming-material QC, unknown plastic analysis, recycled-content review, and literature-backed interpretation of reference spectra.
Common mistakes
- Calling a material match too early because one famous peak is present.
- Ignoring sample prep, fillers, oxidation, water, or additives that can change the apparent pattern.
- Using literature evidence without checking whether your own sampling mode and spectrum quality are comparable.
Verification advice
Use DSC, GC-MS, or TGA to validate the material hypothesis when the peak pattern is ambiguous or mixed.
Literature behind this page
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Physical and Mechanical Properties of Tilapia Scale Hydroxyapatite-Filled High-Density Polyethylene Composites DOI: 10.3390/polym14020251 -
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da Silva 和 Wiebeck - 2022 - ATR-FTIR Spectroscopy Combined with Chemometric Me DOI: 10.21203/rs.3.rs-905784/v1 -
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Bosenbecker 等 - 2019 - Mechanical characterization of HDPE reinforced wit DOI: 10.1590/0104-1428.04819 -
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Kilic 等 - 2021 - Valorization Strategy for Leather Waste as Filler DOI: 10.3390/polym13193313 -
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Kiersnowska 等 - 2020 - The Influence of the Accelerated Aging Conditions DOI: 10.3390/polym12091874 -
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Pierella 等 - 2005 - Catalytic degradation of high density polyethylene DOI: 10.1016/j.micromeso.2004.11.015 -
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Hossain 等 - 2023 - First evidence of microplastics and their characte DOI: 10.3389/fenvs.2023.1232931 -
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Kowalczyk 等 - 2016 - Achromobacter xylosoxidans as a new microorganism DOI: 10.1007/s11356-016-6563-y -
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Nolasco 等 - 2022 - Morphology, Chemical Characterization and Sources DOI: 10.21203/rs.3.rs-1166452/v1 -
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Asriza 和 Arcana - 2015 - SYNTHESIS OF COBALT STEARATE AS OXIDANT ADDITIVE F DOI: 10.1063/1.4930711
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