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Chen Q, Auras R, Kirkensgaard JJK, Uysal-Unalan I. Modulating Barrier Properties of Stereocomplex Polylactide: The Polymorphism Mechanism and Its Relationship with Rigid Amorphous Fraction. ACS APPLIED MATERIALS & INTERFACES 2023; 15:49678-49688. [PMID: 37832031 DOI: 10.1021/acsami.3c12602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Abstract
The barrier properties of semicrystalline polymers are crucial for their performance and their use as packaging materials. This work uncovers the mechanism of polymorphism modification (α, α' and stereocomplex-crystals) and its combined effect on the oxygen and water vapor barrier properties of semicrystalline stereocomplex polylactide (SCPLA). A polymorphic selective filler-type nucleator was employed to eliminate the temperature effect on the development of polymorphism and rigid amorphous fraction (RAF), allowing correlations of barrier properties with different crystal forms and RAF combinations under the same amorphous composition (SCPLA). The oxygen and water vapor barrier performances strongly correlated with crystallinity and crystal form but were not monotonically related to the RAF quantity. The study proposes that the chain conformation of intermediate phases between the crystalline and amorphous phases differs with the associated crystal forms, thereby leading to different RAF "qualities" and contributing to different gas diffusion and solubility coefficients of the amorphous regions. RAF's per unit excess free volume may be varied with crystal forms, for instance: α' ≫ SC > α. Therefore, SCPLA with α' crystals exhibited high oxygen and water vapor permeabilities. Those with high SC and α crystals showed similar barrier behaviors governed by Henry's law dissolution and followed a linear "two-phase" relationship with total crystallinity.
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Affiliation(s)
- Qi Chen
- Department of Food Science, Aarhus University, Agro Food Park 48, 8200 Aarhus N, Denmark
- CiFOOD - Center for Innovative Food Research, Aarhus University, Agro Food Park, 48, 8200 Aarhus N, Denmark
| | - Rafael Auras
- School of Packaging, Michigan State University, East Lansing, Michigan 48824-1223, United States
| | - Jacob Judas Kain Kirkensgaard
- Department of Food Science, University of Copenhagen, 1958 Frederiksberg C, Denmark
- Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen Ø, Denmark
| | - Ilke Uysal-Unalan
- Department of Food Science, Aarhus University, Agro Food Park 48, 8200 Aarhus N, Denmark
- CiFOOD - Center for Innovative Food Research, Aarhus University, Agro Food Park, 48, 8200 Aarhus N, Denmark
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2
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Yuan Z, Zhao X, Ye L. Skinless Polyphenylene Sulfide Foam with Enhanced Thermal Insulation Properties Fabricated by Constructing Aligned Gas Barrier Layers for Surface-Constrained sc-CO 2 Foaming. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37329323 DOI: 10.1021/acsami.3c05454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
A solid skin layer inevitably forms on the foam surface for supercritical carbon dioxide (sc-CO2) foaming technology, leading to deterioration of some inherent properties of polymeric foams. In this work, skinless polyphenylene sulfide (PPS) foam was fabricated with a surface-constrained sc-CO2 foaming method by innovatively constructing aligned epoxy resin/ferromagnetic graphene oxide composites (EP/GO@Fe3O4) as a CO2 barrier layer under a magnetic field. Introduction of GO@Fe3O4 and its ordered alignment led to an obvious decrease in the CO2 permeability coefficient of the barrier layer, a significant increase of the CO2 concentration in the PPS matrix, and a decrease of desorption diffusivity in the depressurization stage, suggesting that the composite layers effectively inhibited the escape of CO2 dissolved in the matrix. Meanwhile, the strong interfacial interaction between the composite layer and the PPS matrix remarkably enhanced the heterogeneous nucleation of cells at the interface, resulting in elimination of the solid skin layer and formation of an obvious cellular structure on the foam surface. Moreover, by the alignment of GO@Fe3O4 in EP, the CO2 permeability coefficient of the barrier layer became much lower, and the cell density on the foam surface further increased with decreasing cell size, which was even higher than that of the cross section of foam, attributed to stronger heterogeneous nucleation at the interface than the homogeneous nucleation in the core region of the sample. As a result, the thermal conductivity of the skinless PPS foam reached as low as 0.0365 W/m·k, decreasing by 49.5% compared with that of regular PPS foam, showing a remarkable improvement in the thermal insulation properties of PPS foam. This work provided a novel and effective method for fabricating skinless PPS foam with enhanced thermal insulation properties.
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Affiliation(s)
- Zun Yuan
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Xiaowen Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Lin Ye
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
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3
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Sun YL, Tu LJ, Tsou CH, Lin SM, Lin L, De Guzman MR, Zeng R, Xia Y. Thermal and mechanical properties of biodegradable nanocomposites prepared by poly(lactic acid)/acetyl tributyl citrate reinforced with attapulgite. JOURNAL OF POLYMER RESEARCH 2023. [DOI: 10.1007/s10965-023-03483-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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4
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Biodegradable Poly(butylene adipate-co-terephthalate)/Poly(glycolic acid) Films: Effect of Poly(glycolic acid) Crystal on Mechanical and Barrier Properties. CHINESE JOURNAL OF POLYMER SCIENCE 2023. [DOI: 10.1007/s10118-023-2934-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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5
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Safandowska M, Makarewicz C, Rozanski A, Idczak R. Barrier Properties of Semicrystalline Polylactide: The Role of the Density of the Amorphous Regions. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marta Safandowska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, Lodz90-363, Poland
| | - Cezary Makarewicz
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, Lodz90-363, Poland
- The Bio-Med-Chem Doctoral School of the University of Lodz and Lodz Institutes of the Polish Academy of Sciences, Banacha 12/16, Lodz90-237, Poland
| | - Artur Rozanski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, Lodz90-363, Poland
| | - Rafal Idczak
- Institute of Experimental Physics, University of Wroclaw, Maksa Borna 9, Wroclaw50-204, Poland
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6
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Chen Q, Auras R, Corredig M, Kirkensgaard JJK, Mamakhel A, Uysal-Unalan I. New opportunities for sustainable bioplastic development: Tailorable polymorphic and three-phase crystallization of stereocomplex polylactide by layered double hydroxide. Int J Biol Macromol 2022; 222:1101-1109. [PMID: 36174869 DOI: 10.1016/j.ijbiomac.2022.09.205] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 11/05/2022]
Abstract
Stereocomplexation between enantiomeric poly(l-lactide) (PLLA) and poly(d-lactide) (PDLA) is a promising sustainable approach and gaining momentum to overcome the shortcomings of polylactide (PLA) for its use as a replacement for fossil-based plastics. Filler addition in tailoring the crystallization of stereocomplex PLA (SC-PLA) attracts extensive attention; however, research has primarily focused on the heterogeneous nucleation effect of filler. The impact of filler on the chain behavior of SC-PLA during crystallization has not been exclusively discussed, and the rigid amorphous fraction (RAF) development remains unknown. In this study, the crystallization of PLLA/PDLA blends was modified by low loading of layered double hydroxide (LDH) (≤ 1 wt%) with the proposed local effect of such filler, and additional RAF development was incurred. In the early stage of crystallization, LDH facilitates the pairing of PLLA and PDLA and arrests the ordered SC pairs during the dynamic balance between the separation and pairing of racemic segments. This explains the severely suppressed homochiral (HC) crystallization, promoted SC crystallization, and additional RAF formation driven by the nucleation-induced chain ordering. This work, for the first time, highlights the role of LDH in creating SC-PLA with tailorable polymorphism and RAF, where the mechanism can be extended to other filler-type nucleator systems.
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Affiliation(s)
- Qi Chen
- Department of Food Science, Aarhus University, Agro Food Park 48, 8200 Aarhus N, Denmark; CiFOOD - Center for Innovative Food Research, Aarhus University, Agro Food Park, 48, 8200 Aarhus N, Denmark
| | - Rafael Auras
- School of Packaging, Michigan State University, East Lansing, MI 48824-1223, USA
| | - Milena Corredig
- Department of Food Science, Aarhus University, Agro Food Park 48, 8200 Aarhus N, Denmark; CiFOOD - Center for Innovative Food Research, Aarhus University, Agro Food Park, 48, 8200 Aarhus N, Denmark
| | - Jacob Judas Kain Kirkensgaard
- Department of Food Science, University of Copenhagen, 1958 Frederiksberg C, Denmark; Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen Ø, Denmark
| | - Aref Mamakhel
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
| | - Ilke Uysal-Unalan
- Department of Food Science, Aarhus University, Agro Food Park 48, 8200 Aarhus N, Denmark; CiFOOD - Center for Innovative Food Research, Aarhus University, Agro Food Park, 48, 8200 Aarhus N, Denmark.
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7
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Marano S, Laudadio E, Minnelli C, Stipa P. Tailoring the Barrier Properties of PLA: A State-of-the-Art Review for Food Packaging Applications. Polymers (Basel) 2022; 14:1626. [PMID: 35458376 PMCID: PMC9029979 DOI: 10.3390/polym14081626] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/07/2022] [Accepted: 04/08/2022] [Indexed: 02/01/2023] Open
Abstract
It is now well recognized that the production of petroleum-based packaging materials has created serious ecological problems for the environment due to their resistance to biodegradation. In this context, substantial research efforts have been made to promote the use of biodegradable films as sustainable alternatives to conventionally used packaging materials. Among several biopolymers, poly(lactide) (PLA) has found early application in the food industry thanks to its promising properties and is currently one of the most industrially produced bioplastics. However, more efforts are needed to enhance its performance and expand its applicability in this field, as packaging materials need to meet precise functional requirements such as suitable thermal, mechanical, and gas barrier properties. In particular, improving the mass transfer properties of materials to water vapor, oxygen, and/or carbon dioxide plays a very important role in maintaining food quality and safety, as the rate of typical food degradation reactions (i.e., oxidation, microbial development, and physical reactions) can be greatly reduced. Since most reviews dealing with the properties of PLA have mainly focused on strategies to improve its thermal and mechanical properties, this work aims to review relevant strategies to tailor the barrier properties of PLA-based materials, with the ultimate goal of providing a general guide for the design of PLA-based packaging materials with the desired mass transfer properties.
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Affiliation(s)
- Stefania Marano
- Department of Science and Engineering of Matter, Environment and Urban Planning, Marche Polytechnic University, 60131 Ancona, Italy; (E.L.); (P.S.)
| | - Emiliano Laudadio
- Department of Science and Engineering of Matter, Environment and Urban Planning, Marche Polytechnic University, 60131 Ancona, Italy; (E.L.); (P.S.)
| | - Cristina Minnelli
- Department of Life and Environmental Sciences, Marche Polytechnic University, 60131 Ancona, Italy;
| | - Pierluigi Stipa
- Department of Science and Engineering of Matter, Environment and Urban Planning, Marche Polytechnic University, 60131 Ancona, Italy; (E.L.); (P.S.)
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8
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Righetti MC, Vannini M, Celli A, Cangialosi D, Marega C. Bio-based semi-crystalline PEF: Temperature dependence of the constrained amorphous interphase and amorphous chain mobility in relation to crystallization. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Kida T, Yamaguchi M. Role of Rigid–Amorphous chains on mechanical properties of polypropylene solid using DSC, WAXD, SAXS, and Raman spectroscopy. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Xiang P, Fan L, Li S, Cao N, Wan C, Bi S, Chen X, Yu P. Preparation of poly(lactic acid) with excellent comprehensive properties via simple deformation or microfibrillation of spherulites. J Appl Polym Sci 2022. [DOI: 10.1002/app.51539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pei Xiang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Lijun Fan
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Shen Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Nuo Cao
- China National Electric Apparatus Research Institute Co., Ltd. Guangzhou P. R. China
| | - Chao Wan
- China National Electric Apparatus Research Institute Co., Ltd. Guangzhou P. R. China
| | - Siwen Bi
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Xuhang Chen
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Peng Yu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
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11
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Righetti MC, Di Lorenzo ML, Cinelli P, Gazzano M. Temperature dependence of the rigid amorphous fraction of poly(butylene succinate). RSC Adv 2021; 11:25731-25737. [PMID: 35478875 PMCID: PMC9036998 DOI: 10.1039/d1ra03775g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 06/16/2021] [Indexed: 11/21/2022] Open
Abstract
In this contribution the temperature evolution of the constrained or rigid amorphous fraction (RAF) of biodegradable and biocompatible poly(butylene succinate) (PBS) was quantified, after detailed thermodynamic characterization by differential scanning calorimetry and X-ray diffraction analysis. At the glass transition temperature, around -40 °C, the rigid amorphous fraction in PBS is about 0.25. It decreases with increasing temperature and becomes zero in proximity of 25 °C. Thus, at room temperature and at the human body temperature, all the amorphous fraction is mobile. This information is important for the development of PBS products for various applications, including biomedical applications, since physical properties of the rigid amorphous fraction, for example mechanical and permeability properties, are different from those of the mobile amorphous fraction.
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Affiliation(s)
- Maria Cristina Righetti
- CNR-IPCF, National Research Council - Institute for Chemical and Physical Processes Via Moruzzi 1 56124 Pisa Italy
| | - Maria Laura Di Lorenzo
- CNR-IPCB, National Research Council - Institute of Polymers, Composites and Biomaterials Via Campi Flegrei 24 80078 Pozzuoli Italy
| | - Patrizia Cinelli
- University of Pisa, Department of Civil and Industrial Engineering Largo Lazzarino 2 56122 Pisa Italy
| | - Massimo Gazzano
- CNR-ISOF, National Research Council - Institute of Organic Synthesis and Photoreactivity Via Gobetti 101 40129 Bologna Italy
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12
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Delpouve N, Faraj H, Demarest C, Dontzoff E, Garda MR, Delbreilh L, Berton B, Dargent E. Water-Induced Breaking of Interfacial Cohesiveness in a Poly(lactic acid)/Miscanthus Fibers Biocomposite. Polymers (Basel) 2021; 13:2285. [PMID: 34301040 PMCID: PMC8309251 DOI: 10.3390/polym13142285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/09/2021] [Accepted: 07/09/2021] [Indexed: 11/16/2022] Open
Abstract
The impact of the immersion in water on the morphology and the thermomechanical properties of a biocomposite made of a matrix of poly (lactic acid) (PLA) modified with an ethylene acrylate toughening agent, and reinforced with miscanthus fibers, has been investigated. Whereas no evidence of hydrolytic degradation has been found, the mechanical properties of the biocomposite have been weakened by the immersion. Scanning electron microscopy (SEM) pictures reveal that the water-induced degradation is mainly driven by the cracking of the fiber/matrix interface, suggesting that the cohesiveness is a preponderant factor to consider for the control of the biocomposite decomposition in aqueous environments. Interestingly, it is observed that the loss of mechanical properties is aggravated when the stereoregularity of PLA is the highest, and when increasing the degree of crystallinity. To investigate the influence of the annealing on the matrix behavior, crystallization at various temperatures has been performed on tensile bars of PLA made by additive manufacturing with an incomplete filling to enhance the contact area between water and polymer. While a clear fragilization occurs in the material crystallized at high temperature, PLA crystallized at low temperature better maintains its properties and even shows high elongation at break likely due to the low size of the spherulites in these annealing conditions. These results show that the tailoring of the mesoscale organization in biopolymers and biocomposites can help control their property evolution and possibly their degradation in water.
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Affiliation(s)
- Nicolas Delpouve
- University of Rouen Normandie, INSA Rouen, CNRS, GPM, 76000 Rouen, France; (H.F.); (C.D.); (E.D.); (M.-R.G.); (L.D.); (B.B.); (E.D.)
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13
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Wu F, Misra M, Mohanty AK. Challenges and new opportunities on barrier performance of biodegradable polymers for sustainable packaging. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101395] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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14
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Structure-Gas Barrier Property Relationship in a Novel Polyimide Containing Naphthalene and Amide Groups: Evaluation by Experiments and Simulations. MATERIALS 2021; 14:ma14061402. [PMID: 33805799 PMCID: PMC7999945 DOI: 10.3390/ma14061402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/22/2021] [Accepted: 03/09/2021] [Indexed: 11/17/2022]
Abstract
In order to meet the increasingly stringent requirements for heat resistance and barrier properties in the packaging and electronic device encapsulation field. A high-barrier polyimide (NAPPI) contains naphthalene ring and amide group was prepared by polymerization of a novel diamine (NAPDA) and pyromellitic dianhydride. The structure and properties of diamine monomers and polymers were characterized. Results show that the NAPPI exhibits superior barrier properties with extremely low water vapor and oxygen transmission rate values of 0.14 g·m−2·day−1 and 0.04 cm3·m−2·day−1, respectively. In addition, the NAPPI presents outstanding mechanical properties and thermal stability as well. This article attempts to explore the relationship between NAPPI structure and barrier properties by combining experiment and simulation. Studies on positron annihilation lifetime spectroscopy, Wide angle X-ray diffractograms and molecular dynamics simulations prove that the NAPPI has smaller interplanar spacing and higher chain regularity. In addition, the strong chain rigidity and interchain cohesion of NAPPI due to the presence of the rigid naphthalene ring and a large number of hydrogen bond interactions formed by amide groups result in compact chain packing and smaller free volume, which reduces the solubility and diffusibility of small molecules in the matrix. In general, the simulation results are consistent with the experimental results, which are important for understanding the barrier mechanism of NAPPI.
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15
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Promoting Interfacial Interactions with the Addition of Lignin in Poly(Lactic Acid) Hybrid Nanocomposites. Polymers (Basel) 2021; 13:polym13020272. [PMID: 33467623 PMCID: PMC7830551 DOI: 10.3390/polym13020272] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 01/06/2023] Open
Abstract
In this paper, the calorimetric response of the amorphous phase was examined in hybrid nanocomposites which were prepared thanks to a facile synthetic route, by adding reduced graphene oxide (rGO), Cloisite 30B (C30B), or multiwalled carbon nanotubes (MWCNT) to lignin-filled poly(lactic acid) (PLA). The dispersion of both lignin and nanofillers was successful, according to a field-emission scanning-electron microscopy (FESEM) analysis. Lignin alone essentially acted as a crystallization retardant for PLA, and the nanocomposites shared this feature, except when MWCNT was used as nanofiller. All systems exhibiting a curtailed crystallization also showed better thermal stability than neat PLA, as assessed from thermogravimetric measurements. As a consequence of favorable interactions between the PLA matrix, lignin, and the nanofillers, homogeneous dispersion or exfoliation was assumed in amorphous samples from the increase of the cooperative rearranging region (CRR) size, being even more remarkable when increasing the lignin content. The amorphous nanocomposites showed a signature of successful filler inclusion, since no rigid amorphous fraction (RAF) was reported at the filler/matrix interface. Finally, the nanocomposites were crystallized up to their maximum extent from the glassy state in nonisothermal conditions. Despite similar degrees of crystallinity and RAF, significant variations in the CRR size were observed among samples, revealing different levels of mobility constraining in the amorphous phase, probably linked to a filler-dimension dependence of space filling.
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16
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Delpouve N, Saiter-Fourcin A, Coiai S, Cicogna F, Spiniello R, Oberhauser W, Legnaioli S, Ishak R, Passaglia E. Effects of organo-LDH dispersion on thermal stability, crystallinity and mechanical features of PLA. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122952] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Aliotta L, Gazzano M, Lazzeri A, Righetti MC. Constrained Amorphous Interphase in Poly(l-lactic acid): Estimation of the Tensile Elastic Modulus. ACS OMEGA 2020; 5:20890-20902. [PMID: 32875224 PMCID: PMC7450648 DOI: 10.1021/acsomega.0c02330] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
The mechanical properties of semicrystalline PLLA containing exclusively α'- or α-crystals have been investigated. The connection between experimental elastic moduli and phase composition has been analyzed as a function of the polymorphic crystalline form. For a complete interpretation of the mechanical properties, the contribution of the crystalline regions and the constrained amorphous interphase or rigid amorphous fraction (RAF) has been quantified by a three-phase mechanical model. The mathematical approach allowed the simultaneous quantification of the elastic moduli of (i) the α'- and α-phases (11.2 and 14.8 GPa, respectively, in excellent agreement with experimental and theoretical data reported in the literature) and (ii) the rigid amorphous fractions linked to the α'- and α-forms (5.4 and 6.1 GPa, respectively). In parallel, the densities of the RAF connected with α'- and α-crystals have been measured (1.17 and 1.11 g/cm3, respectively). The slightly higher value of the elastic modulus of the RAF connected to the α-crystals and its lower density have been associated to a stronger chain coupling at the amorphous/crystal interface. Thus, the elastic moduli at T room of the crystalline (E C), mobile amorphous (E MAF), and rigid amorphous (E RAF) fractions of PLLA turned out to be quantitatively in the order of E MAF < E RAF < E C, with the experimental E MAF value equal to 3.6 GPa. These findings can allow a better tailoring of the properties of PLLA materials in relation to specific applications.
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Affiliation(s)
- Laura Aliotta
- Department
of Civil and Industrial Engineering, University
of Pisa, Largo L. Lazzarino 1, Pisa 56122, Italy
| | - Massimo Gazzano
- CNR-ISOF,
National Research Council−Institute of Organic Synthesis and
Photoreactivity, Via P. Gobetti 101, Bologna 40129, Italy
| | - Andrea Lazzeri
- Department
of Civil and Industrial Engineering, University
of Pisa, Largo L. Lazzarino 1, Pisa 56122, Italy
- CNR-IPCF,
National Research Council−Institute for Chemical and Physical
Processes, Via G. Moruzzi
1, Pisa 56124, Italy
| | - Maria Cristina Righetti
- CNR-IPCF,
National Research Council−Institute for Chemical and Physical
Processes, Via G. Moruzzi
1, Pisa 56124, Italy
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18
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Monnier X, Delpouve N, Saiter-Fourcin A. Distinct dynamics of structural relaxation in the amorphous phase of poly(l-lactic acid) revealed by quiescent crystallization. SOFT MATTER 2020; 16:3224-3233. [PMID: 32162627 DOI: 10.1039/c9sm02541c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Fast scanning calorimetry (FSC) experiments were performed to investigate physical aging in amorphous and semi-crystalline poly(l-lactic acid)s (PLLAs) that were thermally crystallized under conditions leading to the α'- or α-crystalline form, and either favouring or inhibiting the development of a rigid amorphous fraction (RAF). The enthalpy of recovery was calculated after two procedures of rescaling to the content of the whole amorphous phase and also to the only content of the mobile amorphous fraction (MAF), which helped in clarifying the contribution of the RAF. From the dependence of the structural relaxation rate on the aging temperature, two regimes were evidenced for all samples. In the aging temperature domain situated close to the glass transition, the structural relaxation occurs significantly faster in the MAF. Its rate is independent of the aging temperature and is not influenced by the microstructure. However, the distance to equilibrium is higher in samples for which the coupling is strong between crystal and amorphous, implying that the time to reach equilibrium is also higher. In contrast, at low aging temperatures, for which the whole amorphous phase can be considered as solid, MAF and RAF exhibit the same structrural relaxation rate. This convergence in the relaxation kinetics by decreasing the temperature of physical aging was interpreted as the evolution of relaxation dynamics in the MAF from segmental to local. This change is highlighted by the comparison between MAF and RAF relaxation kinetics, but it occurs similarly in a pure amorphous system.
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Affiliation(s)
- Xavier Monnier
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, Groupe de Physique des Matériaux, 76000 Rouen, France.
| | - Nicolas Delpouve
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, Groupe de Physique des Matériaux, 76000 Rouen, France.
| | - Allisson Saiter-Fourcin
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, Groupe de Physique des Matériaux, 76000 Rouen, France.
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Varol N, Delpouve N, Araujo S, Domenek S, Guinault A, Golovchak R, Ingram A, Delbreilh L, Dargent E. Amorphous rigidification and cooperativity drop in semi−crystalline plasticized polylactide. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122373] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Fernandes Nassar S, Delpouve N, Sollogoub C, Guinault A, Stoclet G, Régnier G, Domenek S. Impact of Nanoconfinement on Polylactide Crystallization and Gas Barrier Properties. ACS APPLIED MATERIALS & INTERFACES 2020; 12:9953-9965. [PMID: 32011861 DOI: 10.1021/acsami.9b21391] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The barrier properties of poly(l-lactide) (PLLA) were investigated in multinanolayer systems, probing the effect of confinement, the compatibility between the confining and the confined polymer, crystal orientation, and amorphous phase properties. The multilayer coextrusion process was used to confine PLLA between two amorphous polymers (polystyrene, PS; and polycarbonate, PC), which have different chemical affinities with PLLA. Confined PLLA layers of approximately 20 nm thickness were obtained. The multinanolayer materials were annealed at different temperatures to obtain PLLA crystallites with distinct polymorphs. PLLA annealed in PC/PLLA films at 120 °C afforded a crystallinity degree up to 65%, and PLLA annealed in PC/PLLA or PS/PLLA films at 85 °C had a crystallinity degree of 45%. WAXS measurements evidenced that the PLLA lamellas between PS layers had a mixed in-plane and on-edge orientation. PLLA lamellas between PC layers were uniquely oriented in-plane. DMA results evidenced a shift of the PC glass transition toward lower temperature, suggesting the possible presence of an interphase. The development of the rigid amorphous fraction (RAF) in the amorphous phase during annealing was impacted by the confiner polymer. The RAF content of semicrystalline PLLA was about 15% in PC/PLLA, whereas it was neglectable in PS/PLLA. The oxygen barrier properties appeared to be governed by RAF content, and no impact of the PLLA polymorph or the crystalline orientation was observed. This study shows that the confinement of PLLA on itself does not impact barrier properties but that the proper choice of the confiner polymer can lead to decrease the phase coupling which creates the RAF. It is the prevention of RAF that decreases permeability.
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Affiliation(s)
| | - Nicolas Delpouve
- Normandie Univ , UNIROUEN Normandie, INSA Rouen, CNRS, Groupe de Physique des Matériaux , 76000 Rouen , France
| | - Cyrille Sollogoub
- Laboratoire PIMM, Arts et Métiers, CNRS , CNAM, Hesam Université , 151, Boulevard de l'Hôpital , F-75013 Paris Cedex , France
| | - Alain Guinault
- Laboratoire PIMM, Arts et Métiers, CNRS , CNAM, Hesam Université , 151, Boulevard de l'Hôpital , F-75013 Paris Cedex , France
| | - Gregory Stoclet
- Univ Lille , CNRS, INRA, ENSCL, UMR 8207 - UMET - Unité Matériaux et Transformations , F-59000 Lille , France
| | - Gilles Régnier
- Laboratoire PIMM, Arts et Métiers, CNRS , CNAM, Hesam Université , 151, Boulevard de l'Hôpital , F-75013 Paris Cedex , France
| | - Sandra Domenek
- Université Paris-Saclay, AgroParisTech , INRAE, UMR 0782 SayFood , 91300 Massy , France
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21
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Gaillard T, George M, Gastaldi E, Nallet F, Fabre P. An experimental and theoretical study of the erosion of semi-crystalline polymers and the subsequent generation of microparticles. SOFT MATTER 2019; 15:8302-8312. [PMID: 31549700 DOI: 10.1039/c9sm01482a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The increase of plastics and microplastics in the environment is a major environmental challenge. Still, little is known about the degradation kinetics of macroplastics into smaller particles, under the joint actions of micro-organisms and physico-chemical factors, like UV or mechanical constraints. In order to gain insight into (bio)-degradation in various media, we perform accelerated erosion experiments by using a well-known enzymatic system. We show that the microstructure of semi-crystalline polymers plays a crucial role in the pattern formation at their surface. For the first time, the release of fragments of micrometric size is evidenced, through a mechanism that does not involve fracture propagation. A geometric erosion model allows a quantitative understanding of erosion rates and surface patterns, and provides a critical heterogeneity size, parting two types of behavior: spherulites either released, or eroded in situ. This new geometric approach could constitute a useful tool to predict the erosion kinetics and micro-particle generation in various media.
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Affiliation(s)
- Thibaut Gaillard
- Laboratoire Charles Coulomb (L2C), Université de Montpellier, CNRS, Montpellier, France.
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22
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Hortós M, Anakabe J, Arrillaga A, Espino S, Bou JJ. Effect of the annealing procedure and the molecular weight on the crystalline phase morphology and thermal properties of polylactide. POLYM INT 2019. [DOI: 10.1002/pi.5887] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Martí Hortós
- Departament d'Enginyeria QuímicaUniversitat Politècnica de Catalunya/ETSEIB Barcelona Spain
- Departamento de I+D.Ercros S.A. Barcelona Spain
| | - Jon Anakabe
- Leartiker S. Coop Markina‐Xemein (Bizkaia) Spain
| | | | | | - Jordi J Bou
- Departament d'Enginyeria QuímicaUniversitat Politècnica de Catalunya/ETSEIB Barcelona Spain
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23
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Eceolaza S, Sangroniz A, Río J, Iriarte M, Etxeberria A. Improving the barrier character of poly(caprolactone): Transport properties and free volume of immiscible blends. J Appl Polym Sci 2019. [DOI: 10.1002/app.48018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sorkunde Eceolaza
- POLYMAT‐Department of Polymer Science and TechnologyUniversity of the Basque Country UPV/EHU M. de Lardizabal, 3, 20018 Donostia Spain
| | - Ainara Sangroniz
- POLYMAT‐Department of Polymer Science and TechnologyUniversity of the Basque Country UPV/EHU M. de Lardizabal, 3, 20018 Donostia Spain
| | - Javier Río
- Departament of Material PhysicsComplutense University of Madrid Ciudad Universitaria s/n, 28040 Madrid Spain
| | - Marian Iriarte
- POLYMAT‐Department of Polymer Science and TechnologyUniversity of the Basque Country UPV/EHU M. de Lardizabal, 3, 20018 Donostia Spain
| | - Agustin Etxeberria
- POLYMAT‐Department of Polymer Science and TechnologyUniversity of the Basque Country UPV/EHU M. de Lardizabal, 3, 20018 Donostia Spain
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24
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Achieving all-polylactide fibers with significantly enhanced heat resistance and tensile strength via in situ formation of nanofibrilized stereocomplex polylactide. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.01.040] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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26
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Di Lorenzo ML, Androsch R. Influence of α′-/α-crystal polymorphism on properties of poly(l-lactic acid). POLYM INT 2018. [DOI: 10.1002/pi.5707] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | - René Androsch
- Interdisciplinary Center for Transfer-oriented Research in Natural Sciences (IWE TFN); Martin Luther University Halle-Wittenberg; Halle/Saale Germany
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27
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Sui G, Jing M, Zhao J, Wang K, Zhang Q, Fu Q. A comparison study of high shear force and compatibilizer on the phase morphologies and properties of polypropylene/polylactide (PP/PLA) blends. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.09.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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28
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Di Lorenzo ML, Righetti MC. Crystallization-induced formation of rigid amorphous fraction. POLYMER CRYSTALLIZATION 2018. [DOI: 10.1002/pcr2.10023] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Maria Laura Di Lorenzo
- CNR-IPCB, National Research Council; Institute for Polymers, Composites and Biomaterials, c/o Comprensorio Olivetti; Pozzuoli Italy
| | - Maria Cristina Righetti
- CNR-IPCF, National Research Council; Institute for Chemical and Physical Processes; Pisa Italy
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29
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Monnier X, Fernandes Nassar S, Domenek S, Guinault A, Sollogoub C, Dargent E, Delpouve N. Reduced physical aging rates of polylactide in polystyrene/polylactide multilayer films from fast scanning calorimetry. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.07.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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30
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Vyazovkin S. "Nothing Can Hide Itself from Thy Heat": Understanding Polymers via Unconventional Applications of Thermal Analysis. Macromol Rapid Commun 2018; 40:e1800334. [PMID: 30033550 DOI: 10.1002/marc.201800334] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/26/2018] [Indexed: 11/06/2022]
Abstract
This article surveys some exciting possibilities and results offered by less common, yet essential applications of differential scanning calorimetry and thermogravimetric analysis (TGA). The applications are concerned with the most commonly studied processes of the glass transition, crystallization, melting, polymerization, and degradation. Issues related to the glass transition include the non-Arrhenius temperature dependence and fragility, kinetic complexity of physical aging, evaluation of cooperatively rearranging regions, and rigid amorphous fraction. Discussion of crystallization covers separation of heterogeneous and homogeneous nucleation, crystallization controlled by physical aging, and the use of isoconversional methods for determining the Hoffman-Lauritzen parameters. For melting, the role of reorganization and nucleation control is emphasized. For the thermal degradation and polymerization, advanced kinetic treatments as a way of obtaining mechanistic insights are discussed, and the possibility of studying both processes during continuous cooling is stressed. The possibility of using TGA for monitoring polycondensation is also highlighted.
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Affiliation(s)
- Sergey Vyazovkin
- Department of Chemistry, University of Alabama at Birmingham, 901 S. 14th Street, Birmingham, AL, 35294, USA
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31
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Tan J, Huang J, Liu Y, Ding Q, Zeng Y, Zhang H, Liu Y, Xiang X. Novel high-barrier polyimide containing rigid planar dibenzofuran moiety in main chain. HIGH PERFORM POLYM 2018. [DOI: 10.1177/0954008317709054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Jinghua Tan
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Jie Huang
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Yiwu Liu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan, China
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan, China
| | - Qian Ding
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Yi Zeng
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Hailiang Zhang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan, China
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan, China
| | - Yuejun Liu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Xianwei Xiang
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
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32
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Sangroniz A, Chaos A, Iriarte M, del Río J, Sarasua JR, Etxeberria A. Influence of the Rigid Amorphous Fraction and Crystallinity on Polylactide Transport Properties. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00833] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ainara Sangroniz
- POLYMAT, Department of Polymer Science and Technology, University of the Basque Country UPV/EHU, Manuel de Lardizabal, 3, 20018 Donostia, Spain
| | - Ana Chaos
- POLYMAT, Department of Polymer Science and Technology, University of the Basque Country UPV/EHU, Manuel de Lardizabal, 3, 20018 Donostia, Spain
| | - Marian Iriarte
- POLYMAT, Department of Polymer Science and Technology, University of the Basque Country UPV/EHU, Manuel de Lardizabal, 3, 20018 Donostia, Spain
| | - Javier del Río
- Department of Material Physics, Complutense University of Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain
| | - Jose-Ramon Sarasua
- POLYMAT, Department of Mining-Metallurgy Engineering and Materials Science, School of Engineering, University of the Basque Country UPV/EHU, Plaza Ingeniero Torres Quevedo 1, Bilbao, Spain
| | - Agustin Etxeberria
- POLYMAT, Department of Polymer Science and Technology, University of the Basque Country UPV/EHU, Manuel de Lardizabal, 3, 20018 Donostia, Spain
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33
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Montana JS, Roland S, Richaud E, Miquelard-Garnier G. From equilibrium lamellae to out-of-equilibrium cylinders in triblock copolymer nanolayers obtained via multilayer coextrusion. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.12.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Vitrification of two active pharmaceutical ingredients by fast scanning calorimetry: From structural relaxation to nucleation phenomena. Int J Pharm 2018; 536:426-433. [DOI: 10.1016/j.ijpharm.2017.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 12/04/2017] [Accepted: 12/05/2017] [Indexed: 11/20/2022]
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35
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Nassar SF, Domenek S, Guinault A, Stoclet G, Delpouve N, Sollogoub C. Structural and Dynamic Heterogeneity in the Amorphous Phase of Poly(l,l-lactide) Confined at the Nanoscale by the Coextrusion Process. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b02188] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Samira Fernandes Nassar
- UMR
Ingénierie Procédés Aliments, AgroParisTech,
INRA, Université Paris-Saclay, 1 avenue des Olympiades, F-91300 Massy, France
| | - Sandra Domenek
- UMR
Ingénierie Procédés Aliments, AgroParisTech,
INRA, Université Paris-Saclay, 1 avenue des Olympiades, F-91300 Massy, France
| | - Alain Guinault
- PIMM,
UMR 8006, ENSAM, CNRS, CNAM, 151 bd de l’Hôpital, 75013 Paris, France
| | - Gregory Stoclet
- UMR
CNRS 8207, Unité; Matériaux et Transformations, Université;
Lille1 Sciences et Technologies, Bâtiment C6, Université de Lille Nord de France, 59655 Villeneuve d’Ascq, France
| | - Nicolas Delpouve
- UNIROUEN
Normandie, INSA Rouen, CNRS, GPM, Normandie Université, 76000 Rouen, France
| | - Cyrille Sollogoub
- PIMM,
UMR 8006, ENSAM, CNRS, CNAM, 151 bd de l’Hôpital, 75013 Paris, France
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36
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Espino-Pérez E, Bras J, Almeida G, Plessis C, Belgacem N, Perré P, Domenek S. Designed cellulose nanocrystal surface properties for improving barrier properties in polylactide nanocomposites. Carbohydr Polym 2017; 183:267-277. [PMID: 29352884 DOI: 10.1016/j.carbpol.2017.12.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 11/25/2017] [Accepted: 12/05/2017] [Indexed: 10/18/2022]
Abstract
Nanocomposites are an opportunity to increase the performance of polymer membranes by fine-tuning their morphology. In particular, the understanding of the contribution of the polymer matrix/nanofiller interface to the overall transport properties is key to design membranes with tailored selective and adsorptive properties. In that aim, cellulose nanocrystals (CNC)/polylactide (PLA) nanocomposites were fabricated with chemically designed interfaces, which were ensuring the compatibility between the constituents and impacting the mass transport mechanism. A detailed analysis of the mass transport behaviour of different permeants in CNC/PLA nanocomposites was carried out as a function of their chemical affinity to grafted CNC surfaces. Penetrants (O2 and cyclohexane), which were found to slightly interact with the constituents of the nanocomposites, provided information on the small tortuosity effect of CNC on diffusive mass transport. The mass transport of water (highly interacting with CNC) and anisole (interacting only with designed CNC surfaces) exhibited non-Fickian, Case II behaviour. The water vapour caused significant swelling of the CNC, which created a preferential pathway for mass transport. CNC surface grafting could attenuate this phenomenon and decrease the water transport rate. Anisole, an aromatic organic vapour, became reversibly trapped at the specifically designed CNC/PLA interface, but without any swelling or creation of an accelerated pathway. This caused the decrease of the overall mass transport rate. The latter finding could open a way to the creation of materials with specifically designed barrier properties by designing nanocomposites interfaces with specific interactions towards permeants.
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Affiliation(s)
- Etzael Espino-Pérez
- University Grenoble Alpes, LGP2, F-38000 Grenoble, France; UMR Ingénierie Procédés Aliments, AgroParisTech, INRA, Université Paris Saclay, F-91300 Massy, France
| | - Julien Bras
- University Grenoble Alpes, LGP2, F-38000 Grenoble, France; CNRS, LGP2, F-38000 Grenoble, France
| | - Giana Almeida
- UMR Ingénierie Procédés Aliments, AgroParisTech, INRA, Université Paris Saclay, F-91300 Massy, France
| | - Cédric Plessis
- UMR Ingénierie Procédés Aliments, AgroParisTech, INRA, Université Paris Saclay, F-91300 Massy, France
| | - Naceur Belgacem
- University Grenoble Alpes, LGP2, F-38000 Grenoble, France; CNRS, LGP2, F-38000 Grenoble, France
| | - Patrick Perré
- LGPM, CentraleSupélec, Université Paris-Saclay, 8-10 rue Joliot-Curie, 91190 Gif-sur-Yvette
| | - Sandra Domenek
- UMR Ingénierie Procédés Aliments, AgroParisTech, INRA, Université Paris Saclay, F-91300 Massy, France.
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37
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Tan J, Wang Q, Liu Y, Zeng Y, Ding Q, Wu R, Liu Y, Xiang X. Synthesis, gas barrier and thermal properties of polyimide containing rigid planar fluorene moieties. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2017.1387492] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jinghua Tan
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Department of Polymer Materials and Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Qian Wang
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Department of Polymer Materials and Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Yiwu Liu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Department of Polymer Materials and Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Yi Zeng
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Department of Polymer Materials and Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Qian Ding
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Department of Polymer Materials and Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Ruomei Wu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Department of Polymer Materials and Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Yuejun Liu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Department of Polymer Materials and Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
| | - Xianwei Xiang
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Department of Polymer Materials and Engineering, Hunan University of Technology, Zhuzhou, Hunan, China
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38
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Effect of nanoparticles on the hydrolytic degradation of PLA-nanocomposites by water-ethanol solutions. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.11.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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39
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40
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Messin T, Follain N, Guinault A, Sollogoub C, Gaucher V, Delpouve N, Marais S. Structure and Barrier Properties of Multinanolayered Biodegradable PLA/PBSA Films: Confinement Effect via Forced Assembly Coextrusion. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29101-29112. [PMID: 28758727 DOI: 10.1021/acsami.7b08404] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Multilayer coextrusion processing was applied to produce 2049-layer film of poly(butylene succinate-co-butylene adipate) (PBSA) confined against poly(lactic acid) (PLA) using forced assembly, where the PBSA layer thickness was about 60 nm. This unique technology allowed to process semicrystalline PBSA as confined polymer and amorphous PLA as confining polymer in a continuous manner. The continuity of PBSA layers within the 80/20 wt % PLA/PBSA layered films was clearly evidenced by atomic force microscopy (AFM). Similar thermal events to the reference films were revealed by thermal studies; indicating no diffusion of polymers during the melt-processing. Mechanical properties were measured for the multilayer film and the obtained results were those expected considering the fraction of each polymer, revealing the absence of delamination in the PLA/PBSA multinanolayer film. The confinement effect induced by PLA led to a slight orientation of the crystals, an increase of the rigid amorphous fraction (RAF) in PBSA with a densification of this fraction without changing film crystallinity. These structural changes allowed to strongly improve the water vapor and gas barrier properties of the PBSA layer into the multilayer film up to two decades in the case of CO2 gas. By confining the PBSA structure in very thin and continuous layers, it was then possible to improve the barrier performances of a biodegradable system and the resulting barrier properties were successfully correlated to the effect of confinement on the microstructure and the chain segment mobility of the amorphous phase. Such investigation on these multinanolayers of PLA/PBSA with the aim of evidencing relationships between microstructure implying RAF and barrier performances has never been performed yet. Besides, gas and water permeation results have shown that the barrier improvement obtained from the multilayer was mainly due to the reduction of solubility linked to the reduction of the free volume while the tortuosity effect, as usually expected, was not really observed. This work brings new insights in the field of physicochemical behaviors of new multilayer films made of biodegradable polyesters but also in interfacial processes due to the confinement effect induced in these multinanolayer structures obtained by the forced assembly coextrusion. This original coextrusion process was a very advantageous technique to produce eco-friendly materials with functional properties without the help of tie layer, additives, solvents, surface treatments, or inorganic fillers.
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Affiliation(s)
- Tiphaine Messin
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, PBS, 76000 Rouen, France
| | - Nadège Follain
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, PBS, 76000 Rouen, France
| | - Alain Guinault
- PIMM, Arts et Métiers ParisTech/CNRS/CNAM, 75013 Paris, France
| | | | - Valérie Gaucher
- Unité Matériaux et Transformations, UMR 8207 CNRS/Université Lille 1, 59655 Villeneuve d'Ascq, France
| | - Nicolas Delpouve
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, GPM, 76000 Rouen, France
| | - Stéphane Marais
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, PBS, 76000 Rouen, France
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