How can you identify bio-based from FTIR?
This page summarizes the recurring FTIR evidence reported for bio-based, 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 22 cited sources
Quick answer
bio-based 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
| Grupo funcional | Evidência |
|---|---|
| Carbonyl (C=O) | 33 |
| Methacrylate | 30 |
| Acetate | 30 |
| Amide | 27 |
| Hydroxyl (O-H) | 27 |
| Ester | 25 |
| Carboxyl (COOH) | 25 |
| N h | 22 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of bio-based, 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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bio-based
Wong 等 - 2019 - Photo-activated self-healing bio-based polyurethan DOI: 10.1016/j.indcrop.2019.111613 -
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bio-based
Costa de Almeida 等 - 2021 - Development of a bio-based adhesive from Protium h DOI: 10.1590/0104-1428.10020 -
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bio-based
Sugar-derived bio-based resins as platforms for the development of multifunctional hybrids with potential application for stone conservation DOI: 10.1016/j.mtcomm.2022.103662 -
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bio-based
Multicomponent bio-based fatty acids system as phase change material for low temperature energy storage DOI: 10.1016/j.est.2021.102645 -
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Bio-based
Bio-based thermosetting resins composed of cardanol novolac and bismaleimide DOI: 10.1038/pj.2012.195; -
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bio-based
Development of bio-based material from the Moringa oleifera and its bio-coagulation kinetic modeling-A sustainable approach to treat the wastewater DOI: 10.1016/j.heliyon.2022.e10447 -
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bio-based
Effects of NCO/OH Ratios on Bio-Based Polyurethane Film Properties Made from Acacia mangium Liquefied Wood DOI: 10.3390/polym15051154 -
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bio-based
Organic Bio-Based Aerogel from Food Waste: Preparation and Hydrophobization DOI: 10.3390/gels8110691 -
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Guzman 等 - 2017 - New bio-based materials obtained by thiol-enethio DOI: 10.1002/pi.5336. -
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Preparation of Bio-Based Polyamide Elastomer by Using Green Plasticizers DOI: 10.3390/polym8070257
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