Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices

There is a growing interest in the use of non-polluting compounds, which come from renewable sources, and which performance in their scope is equivalent to their synthetic similes. In this work, five types of rosins from different sources were studied, verifying the existence of differences that can...

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Autores:: Pavón, Cristina
Aldás, Miguel
Hernández-Fernández, Joaquín
López Martínez, Juan

Tipo de recurso:: http://purl.org/coar/resource_type/c_816b

Fecha de publicación:: 2022

Institución:: Corporación Universidad de la Costa

Repositorio:: REDICUC - Repositorio CUC

Idioma:: eng

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network_name_str	REDICUC - Repositorio CUC
repository_id_str
dc.title.spa.fl_str_mv	Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices
title	Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices
spellingShingle	Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices Biomaterials Differential scanning calorimetry Gas chromatography Gum rosin Resins Thermogravimetric analysis
title_short	Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices
title_full	Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices
title_fullStr	Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices
title_full_unstemmed	Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices
title_sort	Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices
dc.creator.fl_str_mv	Pavón, Cristina Aldás, Miguel Hernández-Fernández, Joaquín López Martínez, Juan
dc.contributor.author.spa.fl_str_mv	Pavón, Cristina Aldás, Miguel Hernández-Fernández, Joaquín López Martínez, Juan
dc.subject.spa.fl_str_mv	Biomaterials Differential scanning calorimetry Gas chromatography Gum rosin Resins Thermogravimetric analysis
topic	Biomaterials Differential scanning calorimetry Gas chromatography Gum rosin Resins Thermogravimetric analysis
description	There is a growing interest in the use of non-polluting compounds, which come from renewable sources, and which performance in their scope is equivalent to their synthetic similes. In this work, five types of rosins from different sources were studied, verifying the existence of differences that can be inferred in their subsequent use and application as material additives. For the study, rosins were analyzed using gas-mass chromatographic techniques, infrared spectrophotometry (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and color characterization. The results showed that the samples are composed of either abietic acid or by its structural isomers in contents higher than 80%. FTIR shows that the main difference in the gum rosins is related to the proclivity to absorb environmental moisture and that this technique is not enough to differentiate them. Moreover, the DSC reveals that the gum rosins present enthalpy relaxation effects due to their manufacturing process. The TGA showed that gum rosins are thermally stable until 200°C, therefore they can be successfully blended with thermoplastic polymers. Finally, the color characterization shows little differences between the samples, being CA the gum rosin with the greatest total color differences.
publishDate	2022
dc.date.accessioned.none.fl_str_mv	2022-01-19T20:30:01Z
dc.date.available.none.fl_str_mv	2022-01-19T20:30:01Z
dc.date.issued.none.fl_str_mv	2022-03-05
dc.date.embargoEnd.none.fl_str_mv	2024-03-05
dc.type.spa.fl_str_mv	Pre-Publicación
dc.type.coar.spa.fl_str_mv	http://purl.org/coar/resource_type/c_816b
dc.type.content.spa.fl_str_mv	Text
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dc.identifier.issn.spa.fl_str_mv	0021-8995 1097-4628
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dc.identifier.doi.spa.fl_str_mv	https://doi.org/10.1002/app.51734
dc.identifier.instname.spa.fl_str_mv	Corporación Universidad de la Costa
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dc.language.iso.none.fl_str_mv	eng
language	eng
dc.relation.references.spa.fl_str_mv	1 (2021) Harima Chemicals Group Inc. Rosin Production and Rosin Market (accessed August 17 https://www.harima.co.jp/en/pine_chemicals/rosin3.html 2 Yadav, B.K., Gidwani, B., Vyas, A. Rosin: Recent advances and potential applications in novel drug delivery system (2016) Journal of Bioactive and Compatible Polymers, 31 (2), pp. 111-126. Cited 36 times. doi: 10.1177/0883911515601867 3 Mitchell, G., Gaspar, F., Mateus, A., Mahendra, V., Sousa, D. (2018) Advanced Materials from Forests 4 Gallo Corredor, J., Sarria Villa, R. (2014) J. Cienc. e Ing., 6, p. 65. 5 Karlberg, A.-T. (2000) Handbook of Occupational Dermatology, p. 509. Cited 116 times. Springer Berlin Heidelberg, Berlin, Heidelberg, p 6 da Silva, K., de Lima, J., Fett-Neto, A. (2013) Natural Products: Phytochemistry, Botany and Metabolism of Alkaloids, Phenolics and Terpenes, p. 1. Springer, Berlin, p 7 Silvestre, A.J.D., Gandini, A. Rosin: Major sources, properties and applications (2008) Monomers, Polymers and Composites from Renewable Resources, pp. 67-88. Cited 46 times. http://www.sciencedirect.com.ezproxy.cuc.edu.co/science/book/9780080453163 ISBN: 978-008045316-3 doi: 10.1016/B978-0-08-045316-3.00004-1 8 Wiyono, B., Tachibana, S., Tinambunan, D. (2016) Indones. J. For. Res., 3, p. 7. 9 Cabaret, T., Boulicaud, B., Chatet, E., Charrier, B. Study of rosin softening point through thermal treatment for a better understanding of maritime pine exudation (2018) European Journal of Wood and Wood Products, 76 (5), pp. 1453-1459. Cited 10 times. http://www.springer.com.ezproxy.cuc.edu.co/life+sci/forestry/journal/107 doi: 10.1007/s00107-018-1339-3 10 Mason Joye, N.J., Lawrence, R.V. Resin Acid Composition Of Pine Oleoresins (1967) Journal of Chemical and Engineering Data, 12 (2), pp. 279-282. Cited 61 times. doi: 10.1021/je60033a034 11 Wiyono, B., Tachibana, S., Tinambunan, D. (2006) Indones. J. For. Res., 3, p. 7. Cited 23 times. 12 Valto, P., Knuutinen, J., Alén Overview of analytical procedures for fatty and resin acids in the papermaking process (Open Access) (2012) BioResources, 7 (4), pp. 6041-6076. Cited 21 times. http://www.ncsu.edu/bioresources/BioRes_07/BioRes_07_4_6041_Valto_KA_Overview_Anal_Fatty_Resin_Acids_Papermaking_3080.pdf doi: 10.15376/biores.7.4.6041-6076 13 Mills, J.S., White, R. Natural resins of art and archaeology their sources, chemistry, and identification (1977) Studies in Conservation, 22 (1), pp. 12-31. Cited 154 times. doi: 10.1179/sic.1977.003 14 Maiti, S., Ray, S.S., Kundu, A.K. Rosin: a renewable resource for polymers and polymer chemicals (1989) Progress in Polymer Science, 14 (3), pp. 297-338. Cited 99 times. doi: 10.1016/0079-6700(89)90005-1 15 Wilbon, P.A., Chu, F., Tang, C. Progress in renewable polymers from natural terpenes, terpenoids, and rosin (2013) Macromolecular Rapid Communications, 34 (1), pp. 8-37. Cited 443 times. doi: 10.1002/marc.201200513 16 Karlberg, A.-T. Colophony: Rosin in unmodified and modified form (2012) Kanerva's Occupational Dermatology, Second Edition, 1, pp. 467-479. Cited 14 times. http://dx.doi.org.ezproxy.cuc.edu.co/10.1007/978-3-642-02035-3 ISBN: 978-364202035-3; 978-364202034-6 doi: 10.1007/978-3-642-02035-3_41 17 Pratapwar, A., Sakarkar, D. (2015) J. Qual. Assur. Pharma Anal., 1, p. 100. Cited 3 times. 18 Baek, W.-I., Nirmala, R., Barakat, N.A.M., El-Newehy, M.H., Al-Deyab, S.S., Kim, H.Y. Electrospun cross linked rosin fibers (2011) Applied Surface Science, 258 (4), pp. 1385-1389. Cited 12 times. http://www.journals.elsevier.com.ezproxy.cuc.edu.co/applied-surface-science/ doi: 10.1016/j.apsusc.2011.09.082 19 Kumar, S., Gupta, S.K. Rosin: a naturally derived excipient in drug delivery systems. (2013) Polimery w medycynie, 43 (1), pp. 45-48. Cited 18 times. 20 Arrieta, M.P., Samper, M.D., Jiménez-López, M., Aldas, M., López, J. Combined effect of linseed oil and gum rosin as natural additives for PVC (2017) Industrial Crops and Products, 99, pp. 196-204. Cited 50 times. www.elsevier.com/inca/publications/store/5/2/2/8/2/5 doi: 10.1016/j.indcrop.2017.02.009 21 De La Rosa-Ramírez, H., Aldas, M., Ferri, J.M., López-Martínez, J., Samper, M.D. Modification of poly (lactic acid) through the incorporation of gum rosin and gum rosin derivative: Mechanical performance and hydrophobicity (2020) Journal of Applied Polymer Science, 137 (44), art. no. 49346. Cited 9 times. http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4628 doi: 10.1002/app.49346 22 Aldas, M., Pavon, C., López-Martínez, J., Arrieta, M.P. Pine resin derivatives as sustainable additives to improve the mechanical and thermal properties of injected moulded thermoplastic starch (Open Access) (2020) Applied Sciences (Switzerland), 10 (7), art. no. 2561. Cited 12 times. https://res.mdpi.com/d_attachment/applsci/applsci-10-02561/article_deploy/applsci-10-02561.pdf doi: 10.3390/app10072561 23 Aldas, M., Ferri, J.M., Lopez-Martinez, J., Samper, M.D., Arrieta, M.P. Effect of pine resin derivatives on the structural, thermal, and mechanical properties of Mater-Bi type bioplastic (Open Access) (2020) Journal of Applied Polymer Science, 137 (4), art. no. 48236. Cited 18 times. http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4628 doi: 10.1002/app.48236 24 Pavon, C., Aldas, M., de la Rosa-Ramírez, H., López-Martínez, J., Arrieta, M.P. Improvement of pbat processability and mechanical performance by blending with pine resin derivatives for injection moulding rigid packaging with enhanced hydrophobicity (Open Access) (2020) Polymers, 12 (12), art. no. 2891, pp. 1-19. Cited 7 times. https://www.mdpi.com/2073-4360/12/12/2891/pdf doi: 10.3390/polym12122891 25 Aldas, M., Ferri, J.M., Motoc, D.L., Peponi, L., Arrieta, M.P., López-Martínez, J. Gum rosin as a size control agent of poly(Butylene adipate-co-terephthalate) (pbat) domains to increase the toughness of packaging formulations based on polylactic acid (pla) (Open Access) (2021) Polymers, 13 (12), art. no. 1913. https://www.mdpi.com/2073-4360/13/12/1913/pdf doi: 10.3390/polym13121913 26 Pavon, C., Aldas, M., López-Martínez, J., Ferrándiz, S. New materials for 3D-printing based on polycaprolactone with gum rosin and beeswax as additives (Open Access) (2020) Polymers, 12 (2), art. no. 334. Cited 18 times. https://res.mdpi.com/d_attachment/polymers/polymers-12-00334/article_deploy/polymers-12-00334.pdf doi: 10.3390/polym12020334 27 Nirmala, R., Woo-il, B., Navamathavan, R., Kim, H.Y., Park, S.-J. Preparation and characterizations of rosin based thin films and fibers (2015) Journal of Nanoscience and Nanotechnology, 15 (6), art. no. A87, pp. 4653-4659. Cited 5 times. http://docserver.ingentaconnect.com/deliver/connect/asp/15334880/v15n6/s87.pdf?expires=1421028420&id=80425286&titleid=4286&accname=Elsevier+BV&checksum=54A1C0FD78389A5E5BEE2F4B603E2323 doi: 10.1166/jnn.2015.9596 28 Pavon, C., Aldas, M., De La Rosa-Ramírez, H., Samper, M.D., Arrieta, M.P., López-Martínez, J. (2021) Polym. Adv. Technol., 32, p. 5397. 29 Pavon, C., Aldas, M., Rayón, E., Arrieta, M.P., López-Martínez, J. Deposition of gum rosin microspheres on polypropylene microfibres used in face masks to enhance their hydrophobic behaviour (Open Access) (2021) Environmental Technology and Innovation, 24, art. no. 101812. http://www.journals.elsevier.com.ezproxy.cuc.edu.co/environmental-technology-and-innovation/ doi: 10.1016/j.eti.2021.101812 30 Weatherall, I.L., Coombs, B.D. (1992) Skin Color Measurements in Terms of CIELAB Color Space Values, 99. 31 El-Ghazawy, R.A., El-Saeed, A.M., Al-Shafey, H.I., Abdul-Raheim, A.-R.M., El-Sockary, M.A. Rosin based epoxy coating: Synthesis, identification and characterization (2015) European Polymer Journal, 69, pp. 403-415. Cited 41 times. doi: 10.1016/j.eurpolymj.2015.06.025 32 Azémard, C., Vieillescazes, C., Ménager, M. Effect of photodegradation on the identification of natural varnishes by FT-IR spectroscopy (2014) Microchemical Journal, 112, pp. 137-149. Cited 59 times. doi: 10.1016/j.microc.2013.09.020 33 Correa, J.S., dos Santos, R.R., Anaissi, F.J. Purification and characterization of colophony extracted of Pinus elliottii (Engelm, var. elliottii) (Open Access) (2018) Orbital, 10 (3), pp. 200-203. Cited 4 times. http://www.orbital.ufms.br/index.php/Chemistry/article/download/1100/pdf doi: 10.17807/orbital.v10i3.1100 34 Kizil, R., Irudayaraj, J., Seetharaman, K. Characterization of irradiated starches by using FT-Raman and FTIR spectroscopy (2002) Journal of Agricultural and Food Chemistry, 50 (14), pp. 3912-3918. Cited 678 times. doi: 10.1021/jf011652p 35 Favvas, E.P., Kouvelos, E.P., Papageorgiou, S.K., Tsanaktsidis, C.G., Mitropoulos, A.C. Characterization of natural resin materials using water adsorption and various advanced techniques (2015) Applied Physics A: Materials Science and Processing, 119 (2), pp. 735-743. Cited 10 times. http://www.springer.com.ezproxy.cuc.edu.co/materials/journal/339 doi: 10.1007/s00339-015-9022-6 36 Sifontes, A.B., Gutierrez, B., Mónaco, A., Yanez, A., Díaz, Y., Méndez, F.J., Llovera, L., (...), Brito, J.L. Preparation of functionalized porous nano-γ-Al2O3 powders employing colophony extract (Open Access) (2014) Biotechnology Reports, 4 (1), pp. 21-29. Cited 37 times. http://www.journals.elsevier.com.ezproxy.cuc.edu.co/biotechnology-reports/ doi: 10.1016/j.btre.2014.07.001 37 Gill, P., Moghadam, T.T., Ranjbar, B. Differential scanning calorimetry techniques: Applications in biology and nanoscience (2010) Journal of Biomolecular Techniques, 21 (4), pp. 167-193. Cited 243 times. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2977967/pdf/jbt167.pdf 38 Chiu, M.H., Berezowski, N.S., Prenner, E.J. DSC applications: Macromolecules (2013) Drug-Biomembrane Interaction Studies: The Application of Calorimetric Techniques, pp. 237-263. Cited 3 times. http://www.sciencedirect.com.ezproxy.cuc.edu.co/science/book/9781907568053 ISBN: 978-190756805-3 doi: 10.1533/9781908818348.237 39 Kodre, K., Attarde, S., Yendhe, P., Patil, R., Barge, V. (2014) Res. Rev. J. Pharm. Anal., 3, p. 11. Cited 19 times. 40 Groenewoun, W.M. (2001) Characterisation of Polymers by Thermal Analysis, p. 10. Cited 62 times. Elsevier, Amsterdam, p 41 Hohne, G.W.H., Hemminger, W., Flammersheim, H.-J. (2019) Differential Scanning Calorimetry, 53. 42 Runt, J., Huang, J. Chapter 8 Polymer blends and copolymers (2002) Handbook of Thermal Analysis and Calorimetry, 3, pp. 273-294. Cited 8 times. http://www.elsevier.com.ezproxy.cuc.edu.co/wps/find/bookdescription.cws_home/BS_HATAC/description#description ISBN: 978-044451286-4 doi: 10.1016/S1573-4374(02)80011-5 43 Parker, M.J. (2000) Comprehensive Composite Materials, p. 183. 44 Lazzarotto, M., Zavattieri Ruiz, H., da Silveira Lazzarotto, R.S., Schnitzler, E., Teixeirade Moraes, M.L., Cambuim, J., dos Santos, W., (...), de Aguiar, A.V. (2014) IX Congresso Brasileiro de Análise Térmica e Calorimetria 09 a 12 de novembro de 2014 – Serra Negra–SP-Brasil Use, p. 1. pp 45 Tsanaktsidis, C.G., Favvas, E.P., Scaltsoyiannes, A.A., Christidis, S.G., Katsidi, E.X., Scaltsoyiannes, A.V. Natural resins and their application in antifouling fuel technology: Part I: Improving the physicochemical properties of diesel fuel using natural resin polymer as a removable additive (2013) Fuel Processing Technology, 114, pp. 135-143. Cited 17 times. doi: 10.1016/j.fuproc.2013.03.043 View at Publisher 46 Aldas, M., Pavon, C., Ferri, J.M., Arrieta, M.P., López-Martínez, J. Films based on mater-bi® compatibilized with pine resin derivatives: Optical, barrier, and disintegration properties (Open Access) (2021) Polymers, 13 (9), art. no. 1506. Cited 2 times. https://www.mdpi.com/2073-4360/13/9/1506/pdf doi: 10.3390/polym13091506
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spelling	Pavón, CristinaAldás, MiguelHernández-Fernández, JoaquínLópez Martínez, Juan2022-01-19T20:30:01Z2022-01-19T20:30:01Z2022-03-052024-03-050021-89951097-4628https://hdl.handle.net/11323/8979https://doi.org/10.1002/app.51734Corporación Universidad de la CostaREDICUC - Repositorio CUChttps://repositorio.cuc.edu.co/There is a growing interest in the use of non-polluting compounds, which come from renewable sources, and which performance in their scope is equivalent to their synthetic similes. In this work, five types of rosins from different sources were studied, verifying the existence of differences that can be inferred in their subsequent use and application as material additives. For the study, rosins were analyzed using gas-mass chromatographic techniques, infrared spectrophotometry (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and color characterization. The results showed that the samples are composed of either abietic acid or by its structural isomers in contents higher than 80%. FTIR shows that the main difference in the gum rosins is related to the proclivity to absorb environmental moisture and that this technique is not enough to differentiate them. Moreover, the DSC reveals that the gum rosins present enthalpy relaxation effects due to their manufacturing process. The TGA showed that gum rosins are thermally stable until 200°C, therefore they can be successfully blended with thermoplastic polymers. Finally, the color characterization shows little differences between the samples, being CA the gum rosin with the greatest total color differences.Pavón, Cristina-will be generated-orcid-0000-0003-2902-0059-600Aldás, Miguel-will be generated-orcid-0000-0003-3491-6618-600Hernández-Fernández, JoaquínLópez Martínez, Juan-will be generated-orcid-0000-0001-6124-2108-600application/pdfengCorporación Universidad de la CostaCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Journal of Applied Polymer Sciencehttps://onlinelibrary.wiley.com/doi/abs/10.1002/app.51734BiomaterialsDifferential scanning calorimetryGas chromatographyGum rosinResinsThermogravimetric analysisComparative characterization of gum rosins for their use as sustainable additives in polymeric matricesPre-Publicaciónhttp://purl.org/coar/resource_type/c_816bTextinfo:eu-repo/semantics/preprinthttp://purl.org/redcol/resource_type/ARTOTRinfo:eu-repo/semantics/acceptedVersion1 (2021) Harima Chemicals Group Inc. Rosin Production and Rosin Market (accessed August 17 https://www.harima.co.jp/en/pine_chemicals/rosin3.html2 Yadav, B.K., Gidwani, B., Vyas, A. Rosin: Recent advances and potential applications in novel drug delivery system (2016) Journal of Bioactive and Compatible Polymers, 31 (2), pp. 111-126. Cited 36 times. doi: 10.1177/08839115156018673 Mitchell, G., Gaspar, F., Mateus, A., Mahendra, V., Sousa, D. (2018) Advanced Materials from Forests4 Gallo Corredor, J., Sarria Villa, R. (2014) J. Cienc. e Ing., 6, p. 65.5 Karlberg, A.-T. (2000) Handbook of Occupational Dermatology, p. 509. Cited 116 times. Springer Berlin Heidelberg, Berlin, Heidelberg, p6 da Silva, K., de Lima, J., Fett-Neto, A. (2013) Natural Products: Phytochemistry, Botany and Metabolism of Alkaloids, Phenolics and Terpenes, p. 1. Springer, Berlin, p7 Silvestre, A.J.D., Gandini, A. Rosin: Major sources, properties and applications (2008) Monomers, Polymers and Composites from Renewable Resources, pp. 67-88. Cited 46 times. http://www.sciencedirect.com.ezproxy.cuc.edu.co/science/book/9780080453163 ISBN: 978-008045316-3 doi: 10.1016/B978-0-08-045316-3.00004-18 Wiyono, B., Tachibana, S., Tinambunan, D. (2016) Indones. J. For. Res., 3, p. 7.9 Cabaret, T., Boulicaud, B., Chatet, E., Charrier, B. Study of rosin softening point through thermal treatment for a better understanding of maritime pine exudation (2018) European Journal of Wood and Wood Products, 76 (5), pp. 1453-1459. Cited 10 times. http://www.springer.com.ezproxy.cuc.edu.co/life+sci/forestry/journal/107 doi: 10.1007/s00107-018-1339-310 Mason Joye, N.J., Lawrence, R.V. Resin Acid Composition Of Pine Oleoresins (1967) Journal of Chemical and Engineering Data, 12 (2), pp. 279-282. Cited 61 times. doi: 10.1021/je60033a03411 Wiyono, B., Tachibana, S., Tinambunan, D. (2006) Indones. J. For. Res., 3, p. 7. Cited 23 times.12 Valto, P., Knuutinen, J., Alén Overview of analytical procedures for fatty and resin acids in the papermaking process (Open Access) (2012) BioResources, 7 (4), pp. 6041-6076. Cited 21 times. http://www.ncsu.edu/bioresources/BioRes_07/BioRes_07_4_6041_Valto_KA_Overview_Anal_Fatty_Resin_Acids_Papermaking_3080.pdf doi: 10.15376/biores.7.4.6041-607613 Mills, J.S., White, R. Natural resins of art and archaeology their sources, chemistry, and identification (1977) Studies in Conservation, 22 (1), pp. 12-31. Cited 154 times. doi: 10.1179/sic.1977.00314 Maiti, S., Ray, S.S., Kundu, A.K. Rosin: a renewable resource for polymers and polymer chemicals (1989) Progress in Polymer Science, 14 (3), pp. 297-338. Cited 99 times. doi: 10.1016/0079-6700(89)90005-115 Wilbon, P.A., Chu, F., Tang, C. Progress in renewable polymers from natural terpenes, terpenoids, and rosin (2013) Macromolecular Rapid Communications, 34 (1), pp. 8-37. 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Cited 2 times. https://www.mdpi.com/2073-4360/13/9/1506/pdf doi: 10.3390/polym13091506PublicationORIGINALComparative characterization of gum rosins for their use as sustainable additives in polymeric matrices.pdfComparative characterization of gum rosins for their use as sustainable additives in polymeric matrices.pdfapplication/pdf53389https://repositorio.cuc.edu.co/bitstreams/8ae40e47-b47a-448a-8c95-5cb98c82e499/downloadc57e46db10ac4de5b4e8d46f945be34aMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8701https://repositorio.cuc.edu.co/bitstreams/1f0bbc0c-f33e-4ea5-b8ac-839224744389/download42fd4ad1e89814f5e4a476b409eb708cMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-83196https://repositorio.cuc.edu.co/bitstreams/f4abfd02-472b-443b-a3b6-2c7aa831f5cf/downloade30e9215131d99561d40d6b0abbe9badMD53THUMBNAILComparative characterization of gum rosins for their use as sustainable additives in polymeric matrices.pdf.jpgComparative characterization of gum rosins 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Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices

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