Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA
One of the critical processing parameters—the speed of the extrusion process for plasticized poly (lactic acid) (PLA)—was investigated in the presence of acetyl tributyl citrate (ATBC) as plasticizer. The mixtures were obtained by varying the content of plasticizer (ATBC, 10–30% by weight), using a...
- Autores:
-
Gálvez, Jaime
Vera Mondragón, Bairo
Wagner, Elizabeth
Correa Aguirre, Juan Pablo
Hidalgo Salazar, Miguel Ángel
Caicedo, Carolina
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2020
- Institución:
- Universidad Autónoma de Occidente
- Repositorio:
- RED: Repositorio Educativo Digital UAO
- Idioma:
- eng
- OAI Identifier:
- oai:red.uao.edu.co:10614/13292
- Acceso en línea:
- https://hdl.handle.net/10614/13292
- Palabra clave:
- Citrato de acetil tributilo
Biopolímeros
Dinámica de fluidos
Ángulo de contacto
Fluid dynamics
Biopolymers
Acetyl tributyl citrate
Poly(lactic acid);
Dynamic mechanical analysis
Contact angle
- Rights
- openAccess
- License
- https://creativecommons.org/licenses/by-nc-nd/4.0/
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Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA |
| title |
Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA |
| spellingShingle |
Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA Citrato de acetil tributilo Biopolímeros Dinámica de fluidos Ángulo de contacto Fluid dynamics Biopolymers Acetyl tributyl citrate Poly(lactic acid); Dynamic mechanical analysis Contact angle |
| title_short |
Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA |
| title_full |
Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA |
| title_fullStr |
Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA |
| title_full_unstemmed |
Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA |
| title_sort |
Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA |
| dc.creator.fl_str_mv |
Gálvez, Jaime Vera Mondragón, Bairo Wagner, Elizabeth Correa Aguirre, Juan Pablo Hidalgo Salazar, Miguel Ángel Caicedo, Carolina |
| dc.contributor.author.none.fl_str_mv |
Gálvez, Jaime Vera Mondragón, Bairo Wagner, Elizabeth Correa Aguirre, Juan Pablo Hidalgo Salazar, Miguel Ángel Caicedo, Carolina |
| dc.subject.spa.fl_str_mv |
Citrato de acetil tributilo |
| topic |
Citrato de acetil tributilo Biopolímeros Dinámica de fluidos Ángulo de contacto Fluid dynamics Biopolymers Acetyl tributyl citrate Poly(lactic acid); Dynamic mechanical analysis Contact angle |
| dc.subject.armarc.spa.fl_str_mv |
Biopolímeros Dinámica de fluidos Ángulo de contacto |
| dc.subject.armarc.eng.fl_str_mv |
Fluid dynamics |
| dc.subject.proposal.eng.fl_str_mv |
Biopolymers Acetyl tributyl citrate Poly(lactic acid); Dynamic mechanical analysis Contact angle |
| description |
One of the critical processing parameters—the speed of the extrusion process for plasticized poly (lactic acid) (PLA)—was investigated in the presence of acetyl tributyl citrate (ATBC) as plasticizer. The mixtures were obtained by varying the content of plasticizer (ATBC, 10–30% by weight), using a twin screw extruder as a processing medium for which a temperature profile with peak was established that ended at 160 °C, two mixing zones and different screw rotation speeds (60 and 150 rpm). To evaluate the thermo-mechanical properties of the blend and hydrophilicity, the miscibility of the plasticizing and PLA matrix, Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), oscillatory rheological analysis, Dynamic Mechanical Analysis (DMA), mechanical analysis, as well as the contact angle were tested. The results derived from the oscillatory rheological analysis had a viscous behavior in the PLA samples with the presence of ATBC; the lower process speed promotes the transitions from viscous to elastic as well as higher values of loss modulus, storage modulus and complex viscosity, which means less loss of molecular weight and lower residual energy in the transition from the viscous state to the elastic state. The mechanical and thermal performance was optimized considering a greater capacity in the energy absorption and integration of the components. |
| publishDate |
2020 |
| dc.date.issued.none.fl_str_mv |
2020-09-16 |
| dc.date.accessioned.none.fl_str_mv |
2021-09-30T13:37:55Z |
| dc.date.available.none.fl_str_mv |
2021-09-30T13:37:55Z |
| dc.type.spa.fl_str_mv |
Artículo de revista |
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http://purl.org/coar/resource_type/c_2df8fbb1 |
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http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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http://purl.org/coar/resource_type/c_6501 |
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Text |
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info:eu-repo/semantics/article |
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http://purl.org/redcol/resource_type/ART |
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publishedVersion |
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20734360 |
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https://hdl.handle.net/10614/13292 |
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20734360 |
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https://hdl.handle.net/10614/13292 |
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eng |
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eng |
| dc.relation.citationedition.spa.fl_str_mv |
Volumen 12, número 9 (2020) |
| dc.relation.citationendpage.spa.fl_str_mv |
21 |
| dc.relation.citationissue.spa.fl_str_mv |
Número 9 |
| dc.relation.citationstartpage.spa.fl_str_mv |
1 |
| dc.relation.citationvolume.spa.fl_str_mv |
Volumen 12 |
| dc.relation.cites.eng.fl_str_mv |
Gálvez, J., Correa Aguirre, J. P., Hidalgo Salazar, M.A., Vera Mondragón, B., Wagner, E., Caicedo C. (2020). Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA. Polymers. (Vol. 12 (9), pp.1-21. https://doi.org/10.3390/polym12092111 |
| dc.relation.ispartofjournal.eng.fl_str_mv |
Polymers |
| dc.relation.references.spa.fl_str_mv |
Arrieta, M.P.; Peponi, L.; López, D.; Fernandez-García, M. Recovery of yerba mate (Ilex paraguariensis) residue for the development of PLA-based bionanocomposite films. Ind. Crop. Prod. 2018, 111, 317–328. Aliotta, L.; Gigante, V.; Coltelli, M.-B.; Cinelli, P.; Lazzeri, A.; Seggiani, M. Thermo-mechanical properties of PLA/short flax fiber biocomposites. Appl. Sci. 2019, 9, 3797. Correa, J.P.; Bacigalupe, A.; Maggi, J.; Eisenberg, P. Biodegradable PLA/PBAT/clay nanocomposites: Morphological, rheological and thermomechanical behavior. J. Renew. Mater. 2016, 4, 258–265. Correa, J.P.; Molina, V.; Sanchez, M.; Kainz, C.; Eisenberg, P.; Massani, M.B. Improving ham shelf life with a polyhydroxybutyrate/polycaprolactone biodegradable film activated with nisin. Food Packag. Shelf Life 2017, 11, 31–39. Signori, F.; Coltelli, M.-B.; Bronco, S. Thermal degradation of poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) and their blends upon melt processing. Polym. Degrad. Stab. 2009, 94, 74–82. Arrieta, M.P.; López, J.; López, D.; Kenny, J.M.; Peponi, L. Development of flexible materials based on plasticized electrospun PLA-PHB blends: Structural, thermal, mechanical and disintegration properties. Eur. Polym. J. 2015, 73, 433–446. Mysiukiewicz, O.; Barczewski, M.; Skórczewska, K.; Matykiewicz, D. Correlation between Processing Parameters and Degradation of Di erent Polylactide Grades during Twin-Screw Extrusion. Polymers 2020, 12, 1333. Choi, K.-M.; Choi, M.-C.; Han, D.-H.; Park, T.-S.; Ha, C.-S. Plasticization of poly(lactic acid) (PLA) through chemical grafting of poly(ethylene glycol) (PEG) via in situ reactive blending. Eur. Polym. J. 2013, 49, 2356–2364. Murariu, M.; Ferreira, A.D.S.; Alexandre, M.; Dubois, P. Polylactide (PLA) designed with desired end-use properties: 1. PLA compositions with low molecular weight ester-like plasticizers and related performances. Polym. Adv. Technol. 2008, 19, 636–646. Gigante, V.; Canesi, I.; Cinelli, P.; Coltelli, M.-B.; Lazzeri, A. Rubber Toughening of Polylactic Acid (PLA) with Poly(butylene adipate-co-terephthalate) (PBAT): Mechanical Properties, Fracture Mechanics and Analysis of Ductile-to-Brittle Behavior while Varying Temperature and Test Speed. Eur. Polym. J. 2019, 115, 125–137. Navarrete, J.I.M.; Hidalgo-Salazar, M.A.; Nunez, E.E.; Arciniegas, A.J.R. Thermal and mechanical behavior of biocomposites using additive manufacturing. Int. J. Interact. Des. Manuf. 2018, 12, 449–458. Hidalgo-Salazar, M.A.; Rios, D.; Correa, J.P.; Arciniegas, A.J.R. Influence of thermal treatment on the mechanical properties of thermoplastic composites obtained by large-format 3D printing process. In Proceedings of the Technical Conference—ANTEC, Orlando, FL, USA, 7–9 May 2018. Arrieta, M.P.; López, J.; Rayón, E.; Jiménez, A. Disintegrability under composting conditions of plasticized PLA–PHB blends. Polym. Degrad. Stab. 2014, 108, 307–318. Hassouna, F.; Raquez, J.-M.; Addiego, F.; Toniazzo, V.; Dubois, P.; Ruch, D. New development on plasticized poly(lactide): Chemical grafting of citrate on PLA by reactive extrusion. Eur. Polym. J. 2012, 48, 404–415. Ljungberg, N.;Wesslén, B. Preparation and properties of plasticized poly(lactic acid) films. Biomacromolecules 2005, 6, 1789–1796. Baiardo, M.; Frisoni, G.; Scandola, M.; Rimelen, M.; Lips, D.; Ru eux, K.; Wintermantel, E. Thermal and mechanical properties of plasticized poly(L-lactic acid. J. Appl. Polym. Sci. 2003, 90, 1731–1738. Martin, O.; Averous, L. Poly(lactic acid): Plasticization and properties of biodegradable multiphase systems. Polymer 2001, 42, 6209–6219. Pillin, I.; Montrelay, N.; Grohens, Y. Thermo-mechanical characterization of plasticized PLA: Is the miscibility the only significant factor? Polymer 2006, 47, 4676–4682. Li, D.; Jiang, Y.; Lv, S.; Liu, X.; Gu, J.; Chen, Q.; Zhang, Y. Preparation of plasticized poly (lactic acid) and its influence on the properties of composite materials. PLoS ONE 2018, 13, e0193520. Sungsanit, K.; Kao, N.; Bhattacharya, S.N.; Pivsaart, S. Physical and rheological properties of plasticized linear and branched pla. Korea Aust. Rheol. J. 2010, 22, 187–195. Hu, Y.; Topolkaraev,V.; Hiltner, A.; Baer, E. Crystallization and phase separation in blends of high stereoregular poly(lactide) with poly(ethylene glycol). Polymer 2003, 44, 5681–5689. Armentano, I.; Fortunati, E.; Burgos, N.; Dominici, F.; Luzi, F.; Fiori, S.; Jiménez, A.; Yoon, K.; Ahn, J.; Kang, S.; et al. Processing and characterization of plasticized PLA/PHB blends for biodegradable multiphase systems. Express Polym. Lett. 2015, 9, 583–596. Ljungberg, N.; Wesslén, B. Thermomechanical film properties and aging of blends of poly(lactic acid) and malonate oligomers. J. Appl. Polym. Sci. 2004, 94, 2140–2149. Kang, H.; Li, Y.; Gong, M.; Guo, Y.; Guo, Z.; Fang, Q.; Li, X. An environmentally sustainable plasticizer toughened polylactide. RSC Adv. 2018, 8, 11643–11651. Maiza, M.; Benaniba, M.T.; Quintard, G.; Massardier-Nageotte, V. Biobased additive plasticizing Polylactic acid (PLA). Polímeros 2015, 25, 581–590. Maiza, M.; Benaniba, M.T.; Massardier-Nageotte, V. Plasticizing e ects of citrate esters on properties of poly(lactic acid). J. Polym. Eng. 2016, 36, 371–380. Arrieta, M.P.; Fortunati, E.; Dominici, F.; López, J.; Kenny, J.M. Bionanocomposite films based on plasticized PLA-PHB/cellulose nanocrystal blends. Carbohydr. Polym. 2015, 121, 265–275. Hassouna, F.; Raquez, J.-M.; Addiego, F.; Dubois, P.; Toniazzo, V.; Ruch, D. New approach on the development of plasticized polylactide (PLA): Grafting of poly(ethylene glycol) (PEG) via reactive extrusion. Eur. Polym. J. 2011, 47, 2134–2144. Ljungberg, N.; Wessle, B. Film extrusion and film weldability of poly (lactic acid) plasticized with triacetine and tributyl citrate. J. Appl. Polym. Sci. 2003, 88, 3239–3247. Castro-Aguirre, E.; Iñiguez-Franco, F.; Samsudin, H.; Fang, X.; Auras, R. Poly(lactic acid)—Mass production, processing, industrial applications, and end of life. Adv. Drug Deliv. Rev. 2016, 107, 333–366. Abdelwahab, M.; Flynn, A.; Chiou, B.-S.; Imam, S.; Orts, W.; Chiellini, E. Thermal, mechanical and morphological characterization of plasticized PLA-PHB blends. Polym. Degrad. Stab. 2012, 97, 1822–1828. Liao, J.; Brosse, N.; Hoppe, S.; Du, G.; Zhou, X.; Pizzi, A. One-step compatibilization of poly(lactic acid) and tannin via reactive extrusion. Mater. Des. 2020, 191, 108603. Hidalgo, M.H.; Muñoz, M.F.; Quintana, K.J. Mechanical behavior of polyethylene aluminum composite reinforced with continuous agro fique fibers. Rev. Latinoam. Metal. Mater. 2011, 31, 187–194. Hidalgo, M.H.; Muñoz, M.F.; Quintana, K.J. Mechanical analysis of polyethylene aluminum composite reinforced with short fique fibers available a in two-dimensional arrangement. Rev. Latinoam. Metal. 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Processing of poly(lactic acid): Characterization of chemical structure, thermal stability and mechanical properties. Polym. Degrad. Stab. 2010, 95, 116–125. Hancock, B.C.; Shamblin, S.L.; Zografi, G. Molecular mobility of amorphous pharmaceutical solids below their glass transition temperatures. Pharm. Res. 1995, 12, 799–806. Yang, Z.; Peng, H.; Wang, W.; Liu, T. Crystallization behavior of poly("-caprolactone)/layered double hydroxide nanocomposites. J. Appl. Polym. Sci. 2010, 116, 2658–2667. Weng, Y.-X.;Wang, L.; Zhang, M.;Wang, X.-L.;Wang, Y.-Z. Biodegradation behavior of P(3HB,4HB)/PLA blends in real soil environments. Polym. Test. 2013, 32, 60–70. Courgneau, C.; Domenek, S.; Guinault, A.; Averous, L.; Ducruet, V. Analysis of the Structure-Properties Relationships of Di erent Multiphase Systems Based on Plasticized Poly(Lactic Acid). J. Polym. Environ. 2011, 19, 362–371. Ljungberg, N.;Wesslén, B. The e ects of plasticizers on the dynamic mechanical and thermal properties of poly(lactic acid). J. Appl. Polym. Sci. 2002, 86, 1227–1234. Yasuniwa, M.; Tsubakihara, S.; Sugimoto, Y.; Nakafuku, C. Thermal analysis of the double-melting behavior of poly(L-lactic acid). J. Polym. Sci. Part B Polym. Phys. 2003, 42, 25–32.|Hidalgo-Salazar, M.A.; Salinas, E. Mechanical, thermal, viscoelastic performance and product application of PP- rice husk Colombian biocomposites. Compos. Part B Eng. 2019, 176, 107135. Caicedo, C.; López, L.M.; Alvarado, C.J.C.; Cruz-Delgado, V.J.; Avila-Orta, C.A. Biodegradable polymer nanocomposites applied to technical textiles: A review. DYNA 2019, 86, 288–299. Brostow, W.; Hagg Lobland, H.E.; Narkis, M. Sliding wear, viscoelasticity, and brittleness of polymers. J. Mater. Res. 2006, 21, 2422–2428. Brostow, W.; Hagg Lobland, H.E.; Khoja, S. Brittleness and toughness of polymers and other materials. Mater. Lett. 2015, 159, 478–480. Quero, E.; Müller, A.J.; Signori, F.; Coltelli, M.-B.; Bronco, S. Isothermal Cold-Crystallization of PLA/PBAT Blends with and without the Addition of Acetyl Tributyl Citrate. Macromol. Chem. Phys. 2012, 213, 36–48. Xu, H.; Liu, C.Y.; Chen, C.; Hsiao, B.S.; Zhong, G.J.; Li, Z.M. Easy alignment and e ective nucleation activity of ramie fibers in injection-molded poly(lactic acid) biocomposites. Biopolymers 2012, 97, 825–839. Caicedo, C.; Aguirre-Loredo, R.Y.; García, A.F.; Ossa, O.H.; Arce, A.V.; Pulgarin, H.L.C.; Ávila-Torres, Y. Rheological, thermal, superficial, and morphological properties of thermoplastic achira starch modified with lactic acid and oleic acid. Molecules 2019, 24, 4433. |
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Gálvez, Jaimebb46ff71651ceebfebdf9eab2b88818bVera Mondragón, Bairo949bc4402ec79cd6816e155a67576b3fWagner, Elizabeth27f5fefbfa9963d514c63955f1c17457Correa Aguirre, Juan Pablo983c99dfed263324eda695b42cfd71b3Hidalgo Salazar, Miguel Ángelvirtual::2121-1Caicedo, Carolinadc541421241bd7eed0bf3b67ec0c16432021-09-30T13:37:55Z2021-09-30T13:37:55Z2020-09-1620734360https://hdl.handle.net/10614/13292One of the critical processing parameters—the speed of the extrusion process for plasticized poly (lactic acid) (PLA)—was investigated in the presence of acetyl tributyl citrate (ATBC) as plasticizer. The mixtures were obtained by varying the content of plasticizer (ATBC, 10–30% by weight), using a twin screw extruder as a processing medium for which a temperature profile with peak was established that ended at 160 °C, two mixing zones and different screw rotation speeds (60 and 150 rpm). To evaluate the thermo-mechanical properties of the blend and hydrophilicity, the miscibility of the plasticizing and PLA matrix, Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), oscillatory rheological analysis, Dynamic Mechanical Analysis (DMA), mechanical analysis, as well as the contact angle were tested. The results derived from the oscillatory rheological analysis had a viscous behavior in the PLA samples with the presence of ATBC; the lower process speed promotes the transitions from viscous to elastic as well as higher values of loss modulus, storage modulus and complex viscosity, which means less loss of molecular weight and lower residual energy in the transition from the viscous state to the elastic state. The mechanical and thermal performance was optimized considering a greater capacity in the energy absorption and integration of the components.21 páginasapplication/pdfengMultidisciplinary Digital Publishing Institute. MDPIhttps://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)http://purl.org/coar/access_right/c_abf2Citrato de acetil tributiloBiopolímerosDinámica de fluidosÁngulo de contactoFluid dynamicsBiopolymersAcetyl tributyl citratePoly(lactic acid);Dynamic mechanical analysisContact angleEffect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLAArtículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a85Volumen 12, número 9 (2020)21Número 91Volumen 12Gálvez, J., Correa Aguirre, J. P., Hidalgo Salazar, M.A., Vera Mondragón, B., Wagner, E., Caicedo C. (2020). Effect of extrusion screw speed and plasticizer proportions on the rheological, thermal, mechanical, morphological and superficial properties of PLA. Polymers. (Vol. 12 (9), pp.1-21. https://doi.org/10.3390/polym12092111PolymersArrieta, M.P.; Peponi, L.; López, D.; Fernandez-García, M. Recovery of yerba mate (Ilex paraguariensis) residue for the development of PLA-based bionanocomposite films. Ind. Crop. Prod. 2018, 111, 317–328.Aliotta, L.; Gigante, V.; Coltelli, M.-B.; Cinelli, P.; Lazzeri, A.; Seggiani, M. Thermo-mechanical properties of PLA/short flax fiber biocomposites. Appl. Sci. 2019, 9, 3797.Correa, J.P.; Bacigalupe, A.; Maggi, J.; Eisenberg, P. Biodegradable PLA/PBAT/clay nanocomposites: Morphological, rheological and thermomechanical behavior. J. Renew. Mater. 2016, 4, 258–265.Correa, J.P.; Molina, V.; Sanchez, M.; Kainz, C.; Eisenberg, P.; Massani, M.B. Improving ham shelf life with a polyhydroxybutyrate/polycaprolactone biodegradable film activated with nisin. Food Packag. Shelf Life 2017, 11, 31–39.Signori, F.; Coltelli, M.-B.; Bronco, S. Thermal degradation of poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) and their blends upon melt processing. Polym. Degrad. Stab. 2009, 94, 74–82.Arrieta, M.P.; López, J.; López, D.; Kenny, J.M.; Peponi, L. Development of flexible materials based on plasticized electrospun PLA-PHB blends: Structural, thermal, mechanical and disintegration properties. Eur. Polym. J. 2015, 73, 433–446.Mysiukiewicz, O.; Barczewski, M.; Skórczewska, K.; Matykiewicz, D. Correlation between Processing Parameters and Degradation of Di erent Polylactide Grades during Twin-Screw Extrusion. Polymers 2020, 12, 1333.Choi, K.-M.; Choi, M.-C.; Han, D.-H.; Park, T.-S.; Ha, C.-S. Plasticization of poly(lactic acid) (PLA) through chemical grafting of poly(ethylene glycol) (PEG) via in situ reactive blending. Eur. Polym. J. 2013, 49, 2356–2364.Murariu, M.; Ferreira, A.D.S.; Alexandre, M.; Dubois, P. 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Molecules 2019, 24, 4433.GeneralPublication00f13bbf-fd1b-4026-8c93-f94105cbaa85virtual::2121-100f13bbf-fd1b-4026-8c93-f94105cbaa85virtual::2121-1https://scholar.google.es/citations?user=OTNvAeoAAAAJ&hl=esvirtual::2121-10000-0002-6907-2091virtual::2121-1https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0000143936virtual::2121-1LICENSElicense.txtlicense.txttext/plain; charset=utf-81665https://red.uao.edu.co/bitstreams/cf3b734b-0e7e-4e32-8273-8368778e8a6a/download20b5ba22b1117f71589c7318baa2c560MD52ORIGINALEffect of Extrusion Screw Speed and Plasticizer Proportions on the Rheological, Thermal, Mechanical, Morphological and Superficial Properties of PLA.pdfEffect of Extrusion Screw Speed and Plasticizer Proportions on the Rheological, Thermal, Mechanical, Morphological and Superficial Properties of PLA.pdfTexto archivo completo del artículo de revista, PDFapplication/pdf1130777https://red.uao.edu.co/bitstreams/f6f6720f-d5a3-4a30-8bbf-872e32e75e48/downloada0f81f13de4043689ad4492c2bb3e4bbMD53TEXTEffect of Extrusion Screw Speed and Plasticizer Proportions on the Rheological, Thermal, Mechanical, Morphological and Superficial Properties of PLA.pdf.txtEffect of Extrusion Screw Speed and Plasticizer Proportions on the Rheological, Thermal, Mechanical, Morphological and Superficial Properties of PLA.pdf.txtExtracted texttext/plain87440https://red.uao.edu.co/bitstreams/b4c6fffb-71b4-44aa-897b-1b14e1c76fa6/downloadc05bd42d755bed44ee8dbf04994beab0MD54THUMBNAILEffect of Extrusion Screw Speed and Plasticizer Proportions on the Rheological, Thermal, Mechanical, Morphological and Superficial Properties of PLA.pdf.jpgEffect of Extrusion Screw Speed and Plasticizer Proportions on the Rheological, Thermal, Mechanical, Morphological and Superficial Properties of PLA.pdf.jpgGenerated Thumbnailimage/jpeg15286https://red.uao.edu.co/bitstreams/f2f0c955-9754-4bed-bdbb-e3fe9ee1b759/downloadeb7136aa38ccb9235568811d8a812583MD5510614/13292oai:red.uao.edu.co:10614/132922024-03-06 09:36:03.615https://creativecommons.org/licenses/by-nc-nd/4.0/open.accesshttps://red.uao.edu.coRepositorio Digital Universidad Autonoma de Occidenterepositorio@uao.edu.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 |