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Li B, Zhao Y, Chen X, Wang Z, Xu J, Shi W. Polymer Crystallization with Configurable Birefringence in Double Emulsion Droplets. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Baihui Li
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yue Zhao
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaotong Chen
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhiqi Wang
- Advanced Materials Laboratory of Ministry of Education, Department of Chemical Engineering, Tsinghua University, 100084 Beijing, China
| | - Jun Xu
- Advanced Materials Laboratory of Ministry of Education, Department of Chemical Engineering, Tsinghua University, 100084 Beijing, China
| | - Weichao Shi
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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Nguyen-Tri P, Carrière P, Duong A, Nanda S. Graphene Oxide-Induced Interfacial Transcrystallization of Single-Fiber Milkweed/Polycaprolactone/Polyvinylchloride Composites. ACS OMEGA 2020; 5:22430-22439. [PMID: 32923801 PMCID: PMC7482230 DOI: 10.1021/acsomega.0c02913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
Understanding the interfacial crystallization is crucial for semi-crystalline polymer/natural fiber composites because it links to the final properties. This work reports, for the first time, the interfacial crystallization of a miscible blend between polycaprolactone (PCL) and polyvinylchloride (PVC) with milkweed fibers. We have first described the morphology of the fibers and the chemical composition of waxes covered on its surface. Our findings show that the transcrystallization (TC) layer of PCL/PVC could appear at the interface by simply coating with a layer of graphene oxide (GO) on the milkweed fiber. In our study, atomic force microscopy-infrared spectroscopy analysis shows that the crystallinity of the blends is higher at the vicinity of the interface compared to that in the bulk. The kinetic of the interfacial crystallization in terms of spherulite morphology and crystal growth rates at the nanoscale is examined. X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy were used to analyze the prepared GO and evaluate its relationship with the interfacial crystallization behavior of the blends.
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Affiliation(s)
- Phuong Nguyen-Tri
- Department
of Chemistry, Biochemistry and Physics, University du Québec à Trois-Rivières, Trois-Rivieres G9A 5H7, Québec, Canada
| | - Pascal Carrière
- Laboratoire
des Matériaux, Polymères, Interfaces et Environnement
Marin (MAPIEM), Université de Toulon, La Garde 83130 France
| | - Adam Duong
- Department
of Chemistry, Biochemistry and Physics, University du Québec à Trois-Rivières, Trois-Rivieres G9A 5H7, Québec, Canada
| | - Sonil Nanda
- Department
of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon S7N 5A9, Saskatchewan, Canada
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3
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Al Tawil E, Monnier A, Nguyen QT, Deschrevel B. Microarchitecture of poly(lactic acid) membranes with an interconnected network of macropores and micropores influences cell behavior. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.06.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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4
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Haldar U, Saha B, Azmeera V, De P. POSS end-linked peptide-functionalized poly(ɛ-caprolactone)s and their inclusion complexes with α-cyclodextrin. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ujjal Haldar
- Polymer Research Centre, Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; Mohanpur 741246 Nadia West Bengal India
| | - Biswajit Saha
- Polymer Research Centre, Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; Mohanpur 741246 Nadia West Bengal India
| | - Venkanna Azmeera
- Polymer Research Centre, Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; Mohanpur 741246 Nadia West Bengal India
| | - Priyadarsi De
- Polymer Research Centre, Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; Mohanpur 741246 Nadia West Bengal India
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5
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Ponnamma D, George J, Thomas MG, Chan CH, Valić S, Mozetič M, Cvelbar U, Thomas S. Investigation on the thermal and crystallization behavior of high density polyethylene/acrylonitrile butadiene rubber blends and their composites. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23992] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Deepalekshmi Ponnamma
- School of Chemical Sciences, Mahatma Gandhi University; Kottayam 686560 Kerala India
| | - Josephine George
- Department of Polymer Engineering; University College of Engineering; Thodupuzha 685587 Kerala India
| | - Martin George Thomas
- Department of Polymer Science and Rubber Technology; Cochin University of Science and Technology; Cochin 682022 Kerala India
| | - Chin Han Chan
- Faculty of University Technology MARA (UiTM); Malaysia
| | - Srećko Valić
- Rudjer Bošković Institute; Bijenička 54 10000 Zagreb Croatia
- School of Medicine, University of Rijeka; Braće Branchetta 20 51000 Rijeka Croatia
| | - Miran Mozetič
- Center of Excellence for Polymer Materials and Technologies; Tehnološki park 24 1000 Ljubljana Slovenia
| | - Uroš Cvelbar
- Center of Excellence for Polymer Materials and Technologies; Tehnološki park 24 1000 Ljubljana Slovenia
| | - Sabu Thomas
- School of Chemical Sciences, Mahatma Gandhi University; Kottayam 686560 Kerala India
- Centre for Nanoscience and Nanotechnology; Mahatma Gandhi University; Kottayam 686560 India
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6
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Naolou T, Busse K, Lechner BD, Kressler J. The behavior of poly( ε $$ \boldsymbol{\upvarepsilon} $$ -caprolactone) and poly(ethylene oxide)-b-poly( ε $$ \boldsymbol{\upvarepsilon} $$ -caprolactone) grafted to a poly(glycerol adipate) backbone at the air/water interface. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3168-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Paira TK, Banerjee S, Mandal TK. Peptide-poly(ε-caprolactone) biohybrids by grafting-from ring-opening polymerization: Synthesis, aggregation, and crystalline properties. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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8
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Woo E, Park M, Jeong YG, Shin K. Lamellar arrangements of linear polyethylene in ultrathin films. J Appl Polym Sci 2011. [DOI: 10.1002/app.35508] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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9
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Ma M, He Z, Yang J, Wang Q, Chen F, Wang K, Zhang Q, Deng H, Fu Q. Vertical phase separation and liquid-liquid dewetting of thin PS/PCL blend films during spin coating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:1056-1063. [PMID: 21214211 DOI: 10.1021/la104003p] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Thin films of an amorphous polymer, polystyrene (PS), and a crystalline polymer, poly(ε-caprolactone) (PCL), blend were prepared by spin coating a toluene solution. Surface chemical compositions of the blend films were measured by X-ray photoelectron spectroscopy (XPS), and the surface and interface topographical changes were followed by atomic force microscopy (AFM). By changing the PS concentration and keeping the PCL concentration of the solution at 1 wt %, a great variety of morphologies were constructed. The results show that the morphology of the blend films can be divided into three regions with increasing PS concentration. In region I, PS island domains are embedded in PCL crystals when the PS concentration is lower than 0.3 wt % and the size of the PS island increases with increasing PS concentration. In region II, holes with different sizes surrounded by a low rim are obtained when the concentration of PS is between 0.35 and 0.5 wt %. After selectively washing the PS domains, we studied the interface morphology of PS/PCL and found that the upper PS-rich layer extended into the bottom PCL layer, forming a trench surrounding the holes. In region III, an enriched two-layer structure with the PS-rich layer on top of the blend films and the PCL-rich crystal layer underneath is obtained when the concentration of PS is higher than 0.5 wt %. Last, the formation mechanism of the different surface and interface morphologies is further discussed in terms of the vertical phase separation to a layered structure, followed by liquid-liquid dewetting and crystallization processes during spin coating.
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Affiliation(s)
- Meng Ma
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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Woo EM, Nurkhamidah S, Chen YF. Surface and interior views on origins of two types of banded spherulites in poly(nonamethylene terephthalate). Phys Chem Chem Phys 2011; 13:17841-51. [DOI: 10.1039/c1cp22249j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Huang S, Jiang S, Chen X, An L. Dendritic superstructures and structure transitions of asymmetric poly(L-lactide-b-ethylene oxide) diblock copolymer thin films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13125-13132. [PMID: 19624144 DOI: 10.1021/la901827q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The evolution of morphologies of isothermally crystallized thin films with different thicknesses of poly(L-lactide-b-ethylene oxide) diblock copolymer was observed by optical microscopy (OM) and atomic force microscopy (AFM). Dendritic superstructures stacked with lamellae were investigated in thin films with approximately 200 nm to approximately 400 nm thickness. The lamellar structure was a lozenge- or truncated-lozenge-shaped single crystal of PLLA confirmed by AFM observations. The contour of the dendritic superstructures is hexagonal, and two types of sectors, [110] and [100], can be classified in terms of the chain-folding and crystal growth directions. These phenomena are due to the interplay of the crystallization of the PLLA block, the microphase separation of the block copolymer, and the effect of the film thickness. The growth process of the superstructure can be classified into three steps: the growth of the main branches, the growth of the secondary side branches along the main branch, and the tertiary side branches. PLLA growth rates decrease in copolymer films thinner than 1 microm. Layer-layer phase structure of the copolymer driven by the crystallization of PLLA and the microphase separation of the copolymer appears to be a key factor explaining the crystallization and morphological behavior of this system.
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Affiliation(s)
- Shaoyong Huang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
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Chen YF, Woo EM. Annular Multi-Shelled Spherulites in Interiors of Bulk-Form Poly(nonamethylene terephthalate). Macromol Rapid Commun 2009; 30:1911-6. [DOI: 10.1002/marc.200900292] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Revised: 07/01/2009] [Indexed: 11/11/2022]
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13
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Li B, Esker AR. Molar mass dependent growth of poly(epsilon-caprolactone) crystals in Langmuir films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:2546-54. [PMID: 17243735 DOI: 10.1021/la062563f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Poly(epsilon-caprolactone) (PCL) samples with number average molar masses (Mn) ranging from 3.5 to 36 kg.mol-1 exhibit molar mass dependent nucleation and growth of crystals, crystal morphologies, and melting properties at a temperature of 22.5 degrees C in Langmuir films at the air/water (A/W) interface. At surface area per monomer, A, greater than approximately 0.37 nm2.monomer-1, surface pressure, Pi, and surface elasticity exhibit molar mass independent behavior that is consistent with a semidilute PCL monolayer. In this regime, the scaling exponent indicates that the A/W interface is a good solvent for the liquid-expanded PCL monolayers. Pi-A isotherms show molar mass dependent behavior in the vicinity of the collapse transition, i.e., the supersaturated monolayer state, corresponding to the onset of the nucleation of crystals. Molar mass dependent morphological features for PCL crystals and their subsequent crystal melting are studied by in situ Brewster angle microscopy during hysteresis experiments. The competition between lower segmental mobility and a greater degree of undercooling with increasing molar mass produces a maximum average growth rate at intermediate molar mass. This behavior is analogous to spherulitic growth in bulk PCL melts. The plateau regions in the expansion isotherms represent the melting process, where the polymer chains continuously return to the monolayer state. The magnitude of Pi for the plateau during expansion decreases with increasing molar mass, indicating that the melting process is strongly molar mass dependent.
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Affiliation(s)
- Bingbing Li
- Department of Chemistry (0212), Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
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Li B, Esker AR. Blends of poly(epsilon-caprolactone) and intermediate molar mass polystyrene as Langmuir films at the air/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:574-81. [PMID: 17209608 DOI: 10.1021/la0625291] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Poly(epsilon-caprolactone)/polystyrene (PCL/PS) blends, where nonamphiphilic PS is glassy in the bulk state at the experimental temperature of 22.5 degrees C, are immiscible as Langmuir films at the air/water (A/W) interface. Surface pressure-area per monomer isotherm analyses indicate that the surface concentration of amphiphilic PCL is the only factor influencing the surface pressure below the collapse transition. For PS-rich blends, Brewster angle microscopy (BAM) studies at the A/W interface and atomic force microscopy studies on Langmuir-Schaefer films reveal that PS nanoparticle aggregates formed at very low surface pressures can form networks upon further compression. The morphologies seen in PS-rich blends (networklike rings) are consistent with a recent study of a nonamphiphilic polyhedral oligomeric silsesquioxane (POSS), octaisobutyl-POSS, blended with amphiphilic poly(dimethylsiloxane), suggesting that the nonamphiphilic PS aggregates at the A/W interface produce domains with dipole densities that differ from that of pure PCL. In all composition regimes, the amphiphilic PCL phase tends to spread and form a continuous surface layer at the A/W interface, while simultaneously improving the dispersion of nonamphiphilic PS domains. During film expansion, BAM images show a gradual change in the surface morphology from highly continuous networklike structures (PS-rich blends) to broken ringlike structures (intermediate composition) to small discontinuous aggregates (PCL-rich blends). This study provides valuable information on the morphological evolution of semicrystalline PCL-based polymer blends confined in a "two-dimensional" geometry at the A/W interface and fundamental insight into the influence of microstructure (domain size, phase-separated structures, crystalline morphology, etc.) on the interfacial properties of blends as Langmuir films.
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Affiliation(s)
- Bingbing Li
- Department of Chemistry (0212), Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
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15
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Li B, Marand H, Esker AR. Dendritic growth of poly(ɛ-caprolactone) crystals from compatible blends with poly(t-butyl acrylate) at the air/water interface. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/polb.21328] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Lindström A, Hakkarainen M. Miscibility and surface segregation in PVC/polyester blends—The influence of chain architecture and composition. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/polb.21149] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Li B, Wu Y, Liu M, Esker AR. Brewster angle microscopy study of poly(epsilon-caprolactone) crystal growth in Langmuir films at the air/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:4902-5. [PMID: 16700570 DOI: 10.1021/la060048b] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Surface pressure-induced crystallization of poly(epsilon-caprolactone) (PCL) from a metastable region of the surface pressure-area per monomer (Pi-A) isotherm in Langmuir monolayers at the air/water (A/W) interface has been captured in real time by Brewster angle microscopy (BAM). Morphological features of PCL crystals grown in Langmuir films during the compression process exhibit four fully developed faces and two distorted faces. During expansion of the crystallized film, polymer chains slowly detach from the crystalline domains and diffuse back into the monolayer as the crystals "melt". Typical diffusion-controlled morphologies are revealed by BAM during the melting process as the secondary dendrites melt away faster, that is, at a higher surface pressure than the principal axes. Electron diffraction on Langmuir-Schaefer films suggests that the lamellar crystals are oriented with the polymer chain axes perpendicular to the substrate surface, while atomic force microscopy reveals a crystal thickness of approximately 7.6 nm.
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Affiliation(s)
- Bingbing Li
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
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18
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Joseph A, George S, Joseph K, Thomas S. Melting and crystallization behaviors of isotactic polypropylene/acrylonitrile–butadiene rubber blends in the presence and absence of compatibilizers and fillers. J Appl Polym Sci 2006. [DOI: 10.1002/app.23986] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Crystallization of ultrathin poly(ε-caprolactone) films in the presence of residual solvent, an in situ atomic force microscopy study. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.06.036] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Mareau VH, Prud'homme RE. Growth Rates and Morphologies of Miscible PCL/PVC Blend Thin and Thick Films. Macromolecules 2003. [DOI: 10.1021/ma0210980] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vincent H. Mareau
- Department of Chemistry, CERSIM, Laval University, Québec, Canada G1K 7P4
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