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Chen Y, Han L, Ju D, Liu T, Dong L. Disentanglement induced by uniaxial pre-stretching as a key factor for toughening poly( -lactic acid) sheets. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.02.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mallegni N, Phuong TV, Coltelli MB, Cinelli P, Lazzeri A. Poly(lactic acid) (PLA) Based Tear Resistant and Biodegradable Flexible Films by Blown Film Extrusion. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E148. [PMID: 29342099 PMCID: PMC5793646 DOI: 10.3390/ma11010148] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 12/25/2017] [Accepted: 01/09/2018] [Indexed: 11/16/2022]
Abstract
Poly(lactic acid) (PLA) was melt mixed in a laboratory extruder with poly(butylene adipate-co-terephthalate) (PBAT) and poly(butylene succinate) (PBS) in the presence of polypropylene glycol di glycidyl ether (EJ400) that acted as both plasticizer and compatibilizer. The process was then scaled up in a semi-industrial extruder preparing pellets having different content of a nucleating agent (LAK). All of the formulations could be processed by blowing extrusion and the obtained films showed mechanical properties dependent on the LAK content. In particular the tearing strength showed a maximum like trend in the investigated composition range. The films prepared with both kinds of blends showed a tensile strength in the range 12-24 MPa, an elongation at break in the range 150-260% and a significant crystallinity.
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Affiliation(s)
- Norma Mallegni
- Department of Civil and Industrial Engineering, University of Pisa, Via Diotisalvi 2, 56122 Pisa, Italy.
| | - Thanh Vu Phuong
- Department of Chemical Engineering, Can Tho University, 3/2 Street, Can Tho 90000, Vietnam.
| | - Maria-Beatrice Coltelli
- Department of Civil and Industrial Engineering, University of Pisa, Via Diotisalvi 2, 56122 Pisa, Italy.
| | - Patrizia Cinelli
- Department of Civil and Industrial Engineering, University of Pisa, Via Diotisalvi 2, 56122 Pisa, Italy.
- National Research Council, Institute of Chemical Physical Processes, Via Moruzzi 1, 56124 Pisa, Italy.
| | - Andrea Lazzeri
- Department of Civil and Industrial Engineering, University of Pisa, Via Diotisalvi 2, 56122 Pisa, Italy.
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Ai W, Xue B, Wei C, Dou K, Miao S. Mechanical and thermal properties of coal gasification fine slag reinforced low density polyethylene composites. J Appl Polym Sci 2018. [DOI: 10.1002/app.46203] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Weidong Ai
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering; Jilin University; Changchun 130025 People's Republic of China
| | - Bing Xue
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering; Jilin University; Changchun 130025 People's Republic of China
| | - Cundi Wei
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering; Jilin University; Changchun 130025 People's Republic of China
| | - Kuizhou Dou
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering; Jilin University; Changchun 130025 People's Republic of China
| | - Shiding Miao
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering; Jilin University; Changchun 130025 People's Republic of China
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Negrin M, Macerata E, Consolati G, Quasso F, Genovese L, Soccio M, Giola M, Lotti N, Munari A, Mariani M. Gamma radiation effects on random copolymers based on poly(butylene succinate) for packaging applications. Radiat Phys Chem Oxf Engl 1993 2018. [DOI: 10.1016/j.radphyschem.2017.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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D'Ambrosio RM, Michell RM, Mincheva R, Hernández R, Mijangos C, Dubois P, Müller AJ. Crystallization and Stereocomplexation of PLA-mb-PBS Multi-Block Copolymers. Polymers (Basel) 2017; 10:polym10010008. [PMID: 30966043 PMCID: PMC6414904 DOI: 10.3390/polym10010008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 12/13/2017] [Accepted: 12/20/2017] [Indexed: 11/16/2022] Open
Abstract
The crystallization and morphology of PLA-mb-PBS copolymers and their corresponding stereocomplexes were studied. The effect of flexible blocks (i.e., polybutylene succinate, PBS) on the crystallization of the copolymers and stereocomplex formation were investigated using polarized light optical microscopy (PLOM), differential scanning calorimetry (DSC), infrared spectroscopy (FTIR), and carbon-13 nuclear magnetic resonance spectroscopy (13C-NMR). The PLA and PBS multiple blocks were miscible in the melt and in the glassy state. When the PLA-mb-PBS copolymers are cooled from the melt, the PLA component crystallizes first creating superstructures, such as spherulites or axialites, which constitute a template within which the PBS component has to crystallize when the sample is further cooled down. The Avrami theory was able to fit the overall crystallization kinetics of both semi-crystalline components, and the n values for both blocks in all the samples had a correspondence with the superstructural morphology observed by PLOM. Solution mixtures of PLLA-mb-PBS and PLDA-mb-PBS copolymers were prepared, as well as copolymer/homopolymer blends with the aim to study the stereocomplexation of PLLA and PDLA chain segments. A lower amount of stereocomplex formation was observed in copolymer mixtures as compared to neat L100/D100 stereocomplexes. The results show that PBS chain segments perturb the formation of stereocomplexes and this perturbation increases with the amount of PBS in the samples. However, when relatively low amounts of PBS in the copolymer blends are present, the rate of stereocomplex formation is enhanced. This effect dissappears when higher amounts of PBS are present. The stereocomplexation was confirmed by FTIR and solid state 13C-NMR analyses.
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Affiliation(s)
- Rosa M D'Ambrosio
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, 1080-A Caracas, Venezuela.
| | - Rose Mary Michell
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, 1080-A Caracas, Venezuela.
| | - Rosica Mincheva
- Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials & Polymers (CIRMAP), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium.
| | - Rebeca Hernández
- Instituto de Ciencia y Tecnología de Polímeros, CSIC, c/Juan de la Cierva 3, 28006 Madrid, Spain.
| | - Carmen Mijangos
- Instituto de Ciencia y Tecnología de Polímeros, CSIC, c/Juan de la Cierva 3, 28006 Madrid, Spain.
| | - Philippe Dubois
- Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials & Polymers (CIRMAP), University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium.
| | - Alejandro J Müller
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, 1080-A Caracas, Venezuela.
- Polymat and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain.
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain.
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56
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Muthuraj R, Misra M, Mohanty AK. Biodegradable compatibilized polymer blends for packaging applications: A literature review. J Appl Polym Sci 2017. [DOI: 10.1002/app.45726] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Rajendran Muthuraj
- Institut de Recherche Dupuy de Lome (IRDL)‐CNRS FRE 3744University of South BrittanyLorient56100 France
| | - Manjusri Misra
- School of EngineeringUniversity of GuelphGuelph Ontario Canada
- Bioproducts Discovery and Development Centre (BDDC), Crop Science Building, Department of Plant AgricultureUniversity of GuelphGuelph Ontario Canada
| | - Amar Kumar Mohanty
- School of EngineeringUniversity of GuelphGuelph Ontario Canada
- Bioproducts Discovery and Development Centre (BDDC), Crop Science Building, Department of Plant AgricultureUniversity of GuelphGuelph Ontario Canada
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Supthanyakul R, Kaabbuathong N, Chirachanchai S. Poly( l -lactide- b -butylene succinate- b - l -lactide) triblock copolymer: A multi-functional additive for PLA/PBS blend with a key performance on film clarity. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.05.029] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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