A mass spectrometry study of thermal dissociation of cork

Bento, M. Filomena; Cunha, M. A.; Moutinho, A.M.C.; Pereira, Helena; Fortes, M. A.

doi:10.1016/0168-1176(92)80004-k

Cited by 12 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides the referred compounds, cork also contains sterols, flavonoids, and simple phenolic compounds that are also known for biological activity. For example, sterols reduce cholesterol problems (Tapiero et al, 2003) and cancer proliferation (Block et al, 2004), while flavonoids acts as antioxidants (Rice-Evans et al, 1996) and can be used in cancer chemoprevention (Cai et al, 1997). Thus, due to components with potential health benefits (Moure et al, 2001;Silva et al, 2005), cork appears attractive for pharmaceutical industries.…”

Section: Pharmacological Applicationsmentioning

confidence: 99%

Cork â€“ A Renewable Raw Material: Forecast of Industrial Potential and Development Priorities

Duarte¹,

Bordado²

2015

Front. Mater.

View full text Add to dashboard Cite

show abstract

Section: Pharmacological Applicationsmentioning

confidence: 99%

Cork â€“ A Renewable Raw Material: Forecast of Industrial Potential and Development Priorities

Duarte¹,

Bordado²

2015

Front. Mater.

View full text Add to dashboard Cite

show abstract

“…Virgin cork is not suitable for the production of stoppers and must, therefore, be valued differently. The chemical composition of cork has been extensively studied [25][26][27][28]. Cork is composed of suberin (40 wt%), lignin (20 wt%), cellulose and hemicellulose (18 wt%), extractives (15 wt%), and other materials [14,15].…”

Section: Introductionmentioning

confidence: 99%

Valorization of Cork and High-Density Polyethylene and Polypropylene Wastes in Cork–Plastic Composites: Their Morphology, Mechanical Performance, and Fire Properties

Petlitckaia,

Tihay-Felicelli,

Ferry

et al. 2024

J. Compos. Sci.

View full text Add to dashboard Cite

The recycling of waste materials is a way of limiting over-consumption and optimizing the value of resources. Within the framework of a circular economy, this can be applied to post-consumer plastic wastes, but also to biobased by-products. Hence, this work deals with the design of composite materials by combining recycled high-density polyethylene (HDPE) and polypropylene (PP) coming from bottle caps and virgin cork of insufficient quality for cork stoppers. Different fractions (0, 5, 10, 15, and 20 wt%) of virgin cork were incorporated into recycled polymers (HDPEr and PPr). These composites were prepared without a coupling agent or fire retardant. The morphology and mechanical properties of the different conditionings were studied and compared. The thermal decomposition and the fire behavior of the composites were also investigated. Microscopy revealed the poor adhesion between the cork particles and polymer matrices. However, this limited interaction affected only the tensile strength of the PPr composites, while that of the HDPEr composites remained almost constant. The addition of cork was shown to reduce the time to ignition, but also to promote charring and reduce the heat released during the composite’s combustion. The feasibility of composites based on cork and HDPEr/PPr waste opens the way for their reuse.

show abstract

The thermochemical degradation of cork

Pereira¹

1992

Wood Sci.Technol.

View full text Add to dashboard Cite

Summary.The thermochemical degradation of cork from Quercus suber L. was studied in the temperature range 150 ~ ~ in relation to mass loss, chemical composition and the influence on the cellular structure. The degradation of cork is strongly dependent on temperature and mass losses become significant at 200~ (15% of initial dry weight) and increase rapidly for higher temperatures (27% at 250 ~ 49% at 300 ~ 62% at 350 ~ until ashing at 450 ~ The polysaccharides are the most heat sensitive components: at 200 ~ hemicelluloses disappear and cellulose is degraded to a considerable extent. Suberin is more resistant and degradation starts at approx. 250~ 300~ samples only contain 7% suberin. The cellular structure of cork is also significantly influenced by temperature. Upon heating, cells expand and the cell walls stretch, attaining at 250~ a maximum cell volume increase corresponding to a factor of approximately 2. Above 300 ~ the structure of cell walls is considerably changed and show profound physical damage; in the later stages of pyrolysis, a cellular structure is no longer observed.

show abstract

A mass spectrometry study of thermal dissociation of cork

Cited by 12 publications

References 8 publications

Cork â€“ A Renewable Raw Material: Forecast of Industrial Potential and Development Priorities

Cork â€“ A Renewable Raw Material: Forecast of Industrial Potential and Development Priorities

Valorization of Cork and High-Density Polyethylene and Polypropylene Wastes in Cork–Plastic Composites: Their Morphology, Mechanical Performance, and Fire Properties

The thermochemical degradation of cork

Contact Info

Product

Resources

About