Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Ana Barros-Timmons"'
Autor:
Fernanda R. Vieira, Nuno V. Gama, Ana Barros-Timmons, Dmitry V. Evtuguin, Paula C. O. R. Pinto
Publikováno v:
ChemEngineering, Vol 6, Iss 6, p 95 (2022)
This study aimed to develop new rigid polyurethane foams (RPUFs) for thermal insulation based on kraft lignin, the main by-product of the pulp and paper industry. Crude lignin-based polyol (LBP) was obtained via the oxyalkylation of kraft lignin usin
Externí odkaz:
https://doaj.org/article/593dad8f84a146639653828749a5e94a
Publikováno v:
ChemEngineering; Volume 6; Issue 6; Pages: 95
This study aimed to develop new rigid polyurethane foams (RPUFs) for thermal insulation based on kraft lignin, the main by-product of the pulp and paper industry. Crude lignin-based polyol (LBP) was obtained via the oxyalkylation of kraft lignin usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f0489d72a0b86a7f1b0ebe02292ec3f
Publikováno v:
Progress in Additive Manufacturing. 7:213-223
Aiming to produce high-quality bio-based 3D printed products, in this work, coconut fibers were chemical modified using caprolactone. Fourier-transform infrared spectroscopy (FTIR) and nuclear magnetic reasonance (NMR) confirmed the grafting of the h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3be8161a6be431bfdbcfabfa26db7f64
https://doi.org/10.1007/s40964-021-00226-x
https://doi.org/10.1007/s40964-021-00226-x
Publikováno v:
Journal of Polymers and the Environment. 30:1451-1461
Aiming at minimizing the issues associated with the disposal of polymers, in this study, elastomeric materials derived from 100% recycled feedstocks were produced. Residues of polyurethane (PU) foams (from 0 to 100%) were blended with residues of eth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff1163d4b785cc884600e19c72d8e3d0
https://doi.org/10.1007/s10924-021-02289-x
https://doi.org/10.1007/s10924-021-02289-x
Publikováno v:
Journal of Materials Science. 56:19093-19105
Aiming the sustainability of 3D-printed objects, in this study, pine bark particles were used as filler reinforcement for polyamide 6 (PA). In order to enhance the performance of the produced composites, the biomass was chemically modified via a two-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ece94cac7ae106f11f1ced3110622b3e
https://doi.org/10.1007/s10853-021-06443-7
https://doi.org/10.1007/s10853-021-06443-7
Publikováno v:
Journal of Composite Materials. 55:3615-3626
In this study polyurethane (PU) residues were mixed with residues of textile fibers (cotton, wool and synthetic fibers up to 70 wt/wt) to produce 100% recycled composites. In addition, the effect of the type of fiber on the performance of the ensuing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ffa00df2972bc06fbdd3ee3da3b3a04
https://doi.org/10.1177/00219983211031656
https://doi.org/10.1177/00219983211031656
Publikováno v:
Journal of Polymers and the Environment. 30:194-205
Lignocellulosic composites are biodegradable, have low cost, neutrality to CO2 emission, easily processed, easily available and pause no health risks, therefore these materials have been the subject of an increase of interest. In addition, there is a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e61982edd51634a33b0d6e6572957ba
https://doi.org/10.1007/s10924-021-02191-6
https://doi.org/10.1007/s10924-021-02191-6
Publikováno v:
Journal of Polymer Science. 59:697-705
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbccb958f275db9d93b3b540a6644b66
https://doi.org/10.1002/pol.20210066
https://doi.org/10.1002/pol.20210066
Publikováno v:
Materials (Basel, Switzerland). 15(17)
Currently, the pulp and paper industry generates around 50–70 million tons of lignin annually, which is mainly burned for energy recovery. Lignin, being a natural aromatic polymer rich in functional hydroxyl groups, has been drawing the interest of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28cdedb3b7c2ec32c106e4004e66e5ac
https://pubmed.ncbi.nlm.nih.gov/36079563
https://pubmed.ncbi.nlm.nih.gov/36079563
Three dimensional (3D) printed elastomers is a challenge which can be overcome using fillers. With that in perspective, cork was chemically modified via a two-step reaction, aiming to achieve better compatibility with styrene-ethylene-butylene-styren
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4873297368a453ff02881bcf5fe55296
http://hdl.handle.net/10773/36160
http://hdl.handle.net/10773/36160
