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Nagarajan S, Li H, Woo EM, Chuang W, Tsai YW. Single Crystals Self‐Assembled to Sector‐Face Dendritic Aggregates by Synchrotron Microbeam X‐ray Analysis on Poly(ethylene succinate). MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200114] [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)
- Selvaraj Nagarajan
- Department of Chemical Engineering National Cheng Kung University Tainan 701 Taiwan
| | - Hsiao‐Hua Li
- Department of Chemical Engineering National Cheng Kung University Tainan 701 Taiwan
| | - Eamor M. Woo
- Department of Chemical Engineering National Cheng Kung University Tainan 701 Taiwan
| | - Wei‐Tsung Chuang
- National Synchrotron Radiation Research Center (NSRRC) 101 Hsin‐Ann Road Hsinchu 30076 Taiwan
| | - Yi Wei Tsai
- National Synchrotron Radiation Research Center (NSRRC) 101 Hsin‐Ann Road Hsinchu 30076 Taiwan
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2
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Zhang X, Yang B, Fan B, Sun H, Zhang H. Enhanced Nonisothermal Crystallization and Heat Resistance of Poly(l-lactic acid) by d-Sorbitol as a Homogeneous Nucleating Agent. ACS Macro Lett 2021; 10:154-160. [PMID: 35548982 DOI: 10.1021/acsmacrolett.0c00830] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report on enhancing crystallization and heat resistance of poly(l-lactic acid) (PLLA) by d-sorbitol as a small molecule nucleating agent via melt blending. During the reheating process, the cold crystallization disappeared and the crystallinity of nucleated PLLA exceeded 50%. The heat deflection temperature of PLLA was elevated from 56 to 132 °C by simply increasing the mold temperature (90 °C) without an additional annealing treatment. We also observed the polymorphic crystals of PLLA during melt crystallization, i.e., the coexistence of hexagonal and lenticular crystals, along with their various geometrical aggregates in addition to plenty of conventional spherulites. On the basis of the fact that the nonisothermal crystallization temperature of PLLA (110 °C at a cooling rate of 10 °C/min) was higher than the melting point of d-sorbitol (about 93 °C), we speculated that d-sorbitol promoted the crystallization of PLLA through a homogeneous nucleation mechanism.
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Affiliation(s)
- Xin Zhang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, P. R. China
| | - Biao Yang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, P. R. China
| | - Baomin Fan
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, P. R. China
| | - Hui Sun
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, P. R. China
| | - Huijuan Zhang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, P. R. China
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3
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Staub MC, Li R, Fukuto M, Li CY. Confined Crystal Melting in Edgeless Poly(l-lactic acid) Crystalsomes. ACS Macro Lett 2020; 9:1773-1778. [PMID: 35653681 DOI: 10.1021/acsmacrolett.0c00693] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Polymer single crystals tend to be quasi two-dimensional (2D) lamellae and their small lateral surfaces are the starting points of lamella melting and thickening. However, the recently discovered crystalsomes, which are defined for hollow single crystal-like spherical shells, are edgeless, self-confined, and incommensurate with translational symmetry. This work concerns the structure and melting behavior of these edgeless crystalsomes. Poly(l-lactic acid) crystalsomes were grown using a miniemulsion solution crystallization method. Differential scanning calorimetry and in situ wide-angle X-ray diffraction were used to follow the structural evolution of the crystalsomes upon heating. Our results demonstrated that the structure and melting behavior of crystalsomes are curvature-dependent and significantly different from their flat crystal counterpart.
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Affiliation(s)
- Mark C. Staub
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Ruipeng Li
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Masafumi Fukuto
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Christopher Y. Li
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
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4
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Texture Induced by Molecular Weight Dispersity: Polymorphism within Poly(L-lactic acid) Spherulites. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2464-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Xie Q, Chang X, Qian Q, Pan P, Li CY. Structure and Morphology of Poly(lactic acid) Stereocomplex Nanofiber Shish Kebabs. ACS Macro Lett 2020; 9:103-107. [PMID: 35638649 DOI: 10.1021/acsmacrolett.9b00953] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We report the formation and structure of poly(lactic acid) (PLA) nanofiber shish kebabs (NFSKs) containing stereocomplex crystal (SC) shish and SC/homocrystal (HC) kebabs. PLA-based NFSKs were obtained by combining electrospinning and controlled polymer crystallization in order to investigate the interplay between PLA SC and HC formation. Nanofibers were produced by electrospinning poly(l-lactic acid)/poly(d-lactic acid) (PLLA/PDLA) blends and were used as the shish. A secondary polymer (either PDLA or PLLA/PDLA blends) was decorated on the nanofiber by an incubation method to form kebab lamellae. We show that both SC and HC kebab crystals can be formed using a SC shish following a soft epitaxy mechanism, while the subtle morphological differences in the resultant NFSKs reveal the propensity of SC nuclei in SC/HC crystallization.
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Affiliation(s)
- Qing Xie
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Xiaohua Chang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Qian Qian
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Pengju Pan
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Christopher Y. Li
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
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6
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Iyer K, Margossian M, Muthukumar M. Interlude of metastability in the melting of polymer crystals. J Chem Phys 2019; 151:124903. [DOI: 10.1063/1.5114645] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- Kiran Iyer
- Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Marzbed Margossian
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Murugappan Muthukumar
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
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7
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Agbolaghi S, Abbaspoor S, Abbasi F. A comprehensive review on polymer single crystals—From fundamental concepts to applications. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.11.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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8
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Mahmoudi M, Agbolaghi S, Mozaffari Z, Abbaspoor S, Massoumi B, Sarvari R, Hosseinzadeh N. Star‐Like Poly(
N
‐isopropylacrylamide) and Poly(ethylene glycol) Copolymers Self‐Arranged in Newfound Single Crystals and Associated Novel Class of Polymer Brush Regimes with V‐Type Tethers. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201700638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mojgan Mahmoudi
- Faculty of Polymer Engineering and Institute of Polymeric MaterialsSahand University of Technology Tabriz 5331711111 Iran
| | - Samira Agbolaghi
- Chemical Engineering DepartmentFaculty of EngineeringAzarbaijan Shahid Madani University Tabriz 5375171379 Iran
| | - Zahra Mozaffari
- Department of ChemistryPayame Noor University Tehran 19395−3697 Iran
| | - Saleheh Abbaspoor
- Faculty of Polymer Engineering and Institute of Polymeric MaterialsSahand University of Technology Tabriz 5331711111 Iran
| | | | - Raana Sarvari
- Department of ChemistryPayame Noor University Tehran 19395−3697 Iran
| | - Nasrin Hosseinzadeh
- Faculty of Polymer Engineering and Institute of Polymeric MaterialsSahand University of Technology Tabriz 5331711111 Iran
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Wang W, Qi H, Zhou T, Mei S, Han L, Higuchi T, Jinnai H, Li CY. Highly robust crystalsome via directed polymer crystallization at curved liquid/liquid interface. Nat Commun 2016; 7:10599. [PMID: 26837260 PMCID: PMC4742919 DOI: 10.1038/ncomms10599] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 01/05/2016] [Indexed: 01/28/2023] Open
Abstract
Lipids and amphiphilic block copolymers spontaneously self-assemble in water to form a plethora of micelles and vesicles. They are typically fluidic in nature and often mechanically weak for applications such as drug delivery and gene therapeutics. Mechanical properties of polymeric materials could be improved by forming crystalline structures. However, most of the self-assembled micelles and vesicles have curved surfaces and precisely tuning crystallization within a nanoscale curved space is challenging, as the curved geometry is incommensurate with crystals having three-dimensional translational symmetry. Herein, we report using a miniemulsion crystallization method to grow nanosized, polymer single-crystal-like capsules. We coin the name crystalsome to describe this unique structure, because they are formed by polymer lamellar crystals and their structure mimics liposomes and polymersomes. Using poly(L-lactic acid) (PLLA) as the model polymer, we show that curved water/p-xylene interface formed by the miniemulsion process can guide the growth of PLLA single crystals. Crystalsomes with the size ranging from ∼148 nm to over 1 μm have been formed. Atomic force microscopy measurement demonstrate a two to three orders of magnitude increase in bending modulus compared with conventional polymersomes. We envisage that this novel structure could shed light on investigating spherical crystallography and drug delivery.
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Affiliation(s)
- Wenda Wang
- Department of Materials Science and Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA
| | - Hao Qi
- Department of Materials Science and Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA
| | - Tian Zhou
- Department of Materials Science and Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA
| | - Shan Mei
- Department of Materials Science and Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA
| | - Lin Han
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, USA
| | - Takeshi Higuchi
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Hiroshi Jinnai
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Christopher Y. Li
- Department of Materials Science and Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA
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Di Bonito P, Petrone L, Casini G, Francolini I, Ammendolia MG, Accardi L, Piozzi A, D'Ilario L, Martinelli A. Amino-functionalized poly(L-lactide) lamellar single crystals as a valuable substrate for delivery of HPV16-E7 tumor antigen in vaccine development. Int J Nanomedicine 2015; 10:3447-58. [PMID: 26056443 PMCID: PMC4431504 DOI: 10.2147/ijn.s76023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background Poly(l-lactide) (PLLA) is a biodegradable polymer currently used in many biomedical applications, including the production of resorbable surgical devices, porous scaffolds for tissue engineering, nanoparticles and microparticles for the controlled release of drugs or antigens. The surfaces of lamellar PLLA single crystals (PLLAsc) were provided with amino groups by reaction with a multifunctional amine and used to adsorb an Escherichia coli-produced human papillomavirus (HPV)16-E7 protein to evaluate its possible use in antigen delivery for vaccine development. Methods PLLA single crystals were made to react with tetraethylenepentamine to obtain amino-functionalized PLLA single crystals (APLLAsc). Pristine and amino-functionalized PLLAsc showed a two-dimensional microsized and one-dimensional nanosized lamellar morphology, with a lateral dimension of about 15–20 μm, a thickness of about 12 nm, and a surface specific area of about 130 m2/g. Both particles were characterized and loaded with HPV16-E7 before being administered to C57BL/6 mice for immunogenicity studies. The E7-specific humoral-mediated and cell-mediated immune response as well as tumor protective immunity were analyzed in mice challenged with TC-1 cancer cells. Results Pristine and amino-functionalized PLLAsc adsorbed similar amounts of E7 protein, but in protein-release experiments E7-PLLAsc released a higher amount of protein than E7-APLLAsc. When the complexes were dried for observation by scanning electron microscopy, both samples showed a compact layer, but E7-APLLAsc showed greater roughness than E7-PLLAsc. Immunization experiments in mice showed that E7-APLLAsc induced a stronger E7-specific immune response when compared with E7-PLLAsc. Immunoglobulin G isotyping and interferon gamma analysis suggested a mixed Th1/Th2 immune response in both E7-PLLAsc-immunized and E7-APLLAsc-immunized mice. However, only the mice receiving E7-APLLAsc were fully protected from TC-1 tumor growth after three doses of vaccine. Conclusion Our results show that APLLA single crystals improve the immunogenicity of HPV16-E7 and indicate that E7-APLLAsc could be used for development of an HPV16 therapeutic vaccine against HPV16-related tumors.
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Affiliation(s)
- Paola Di Bonito
- Department of Infectious, Parasitic and Immune-mediated Diseases, Italian National Institute of Health, Rome, Italy
| | - Linda Petrone
- Department of Infectious, Parasitic and Immune-mediated Diseases, Italian National Institute of Health, Rome, Italy
| | - Gabriele Casini
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
| | | | | | - Luisa Accardi
- Department of Infectious, Parasitic and Immune-mediated Diseases, Italian National Institute of Health, Rome, Italy
| | - Antonella Piozzi
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
| | - Lucio D'Ilario
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
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11
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Zhang B, Chen J, Zhang H, Baier MC, Mecking S, Reiter R, Mülhaupt R, Reiter G. Annealing-induced periodic patterns in solution grown polymer single crystals. RSC Adv 2015. [DOI: 10.1039/c4ra10563j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Faceted polymer single crystals have been transformed into periodically branched patterns by applying a slow annealing procedure.
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Affiliation(s)
- Bin Zhang
- Institute of Physics
- University of Freiburg
- 79104 Freiburg
- Germany
- Hermann Staudinger Graduate School
| | - Jingbo Chen
- School of Materials Science & Engineering
- Zhengzhou University
- Zhengzhou 450002
- People's Republic of China
| | - Hui Zhang
- Institute of Physics
- University of Freiburg
- 79104 Freiburg
- Germany
| | - Moritz C. Baier
- Chair of Chemical Materials Science
- Department of Chemistry
- University of Konstanz
- 78464 Konstanz
- Germany
| | - Stefan Mecking
- Chair of Chemical Materials Science
- Department of Chemistry
- University of Konstanz
- 78464 Konstanz
- Germany
| | - Renate Reiter
- Institute of Physics
- University of Freiburg
- 79104 Freiburg
- Germany
- Freiburg Materials Research Centre
| | - Rolf Mülhaupt
- Institute of Macromolecular Chemistry
- University of Freiburg
- 79104 Freiburg
- Germany
- Freiburg Materials Research Centre
| | - Günter Reiter
- Institute of Physics
- University of Freiburg
- 79104 Freiburg
- Germany
- Freiburg Materials Research Centre
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12
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Zhang B, Chen J, Baier MC, Mecking S, Reiter R, Mülhaupt R, Reiter G. Molecular-weight-dependent changes in morphology of solution-grown polyethylene single crystals. Macromol Rapid Commun 2014; 36:181-9. [PMID: 25303218 DOI: 10.1002/marc.201400433] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 09/03/2014] [Indexed: 11/12/2022]
Abstract
Polymer single crystals consisting of folded chains are always in a nonequilibrium state, even if they are faceted with a well-defined envelope reflecting the parameters of the crystal unit cell. Heterogeneities like small variations in the degree of chain folding within such crystals are responsible for a rather broad range in melting temperature. Consequently, upon annealing at a given temperature, some parts may be above and some below their respective melting temperatures, inducing a lamellar thickening process, which may vary locally. To emphasize such variations, controlled annealing experiments are performed at comparatively low temperatures and for long times. For single crystals of low-molecular-weight polyethylene, the formation of the well-known "Swiss-cheese"-like morphology with randomly distributed holes of varying sizes within the annealed single crystal is observed. However, for high-molecular-weight polyethylene, a regular pattern appeared upon annealing, characterized by branches of equal width that are oriented perpendicular to the crystal edge. All branches end at the nucleation site. Interestingly, the resulting pattern depends sensitively on both crystallization and annealing conditions. These thermally induced regular patterns within a single crystal are attributed to a stable crystalline framework formed within polyethylene single crystals in the course of growth.
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Affiliation(s)
- Bin Zhang
- Institute of Physics, University of Freiburg, 79104, Freiburg, Germany; Hermann Staudinger Graduate School, University of Freiburg, 79104, Freiburg, Germany; School of Materials Science & Engineering, Zhengzhou University, Zhengzhou, 450002, China
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13
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Crystallization Behaviors and Structure Transitions of Biocompatible and Biodegradable Diblock Copolymers. Polymers (Basel) 2014. [DOI: 10.3390/polym6082116] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Na B, Zou S, Lv R. Unexpected Reorganization Effects of Cold-Crystallized Polylactide Stereocomplex. J MACROMOL SCI B 2013. [DOI: 10.1080/00222348.2013.808539] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Huang S, Li H, Yu D, Jiang S, Chen X, An L. Crystalline structures of poly(l-lactide) formed under pressure and structure transitions with heating. CrystEngComm 2013. [DOI: 10.1039/c3ce26943d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Rangari D, Vasanthan N. Study of Strain-Induced Crystallization and Enzymatic Degradation of Drawn Poly(l-lactic acid) (PLLA) Films. Macromolecules 2012. [DOI: 10.1021/ma301482j] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deepika Rangari
- Department of Chemistry, Long Island University, One University Plaza, Brooklyn,
New York 11201, United States
| | - Nadarajah Vasanthan
- Department of Chemistry, Long Island University, One University Plaza, Brooklyn,
New York 11201, United States
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17
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Nakajima H, Nakajima M, Fujiwara T, Lee CW, Aoki T, Kimura Y. Molecular Organization of Polylactides Immobilized on a Flat Surface: Observation of Single Crystal Arrays of Homochiral and Stereocomplexed Polylactides. Macromolecules 2012. [DOI: 10.1021/ma3010058] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hajime Nakajima
- Department of Biobased Materials Science, Kyoto Institute of Technology Matsugasaki, Sakyo-ku,
Kyoto 606-8585, Japan
| | - Maho Nakajima
- Department of Biobased Materials Science, Kyoto Institute of Technology Matsugasaki, Sakyo-ku,
Kyoto 606-8585, Japan
| | - Tomoko Fujiwara
- Department
of Chemistry, University of Memphis, Memphis,
Tennessee 38152, United States
| | - Chan Woo Lee
- Department of Innovative Industrial and Technology, Hoseo University Baebang-Myun, Asan, Chungnam 336-795,
Korea
| | - Takashi Aoki
- Department of Biobased Materials Science, Kyoto Institute of Technology Matsugasaki, Sakyo-ku,
Kyoto 606-8585, Japan
| | - Yoshiharu Kimura
- Department of Biobased Materials Science, Kyoto Institute of Technology Matsugasaki, Sakyo-ku,
Kyoto 606-8585, Japan
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18
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Vasanthan N, Gezer H. Thermally induced crystallization and enzymatic degradation studies of poly (L-lactic acid) films. J Appl Polym Sci 2012. [DOI: 10.1002/app.38015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bakry A, Martinelli A, Bizzarri M, Cucina A, D'Ilario L, Francolini I, Piozzi A, Proietti S. A new approach for the preparation of hydrophilic poly(L
-lactide) porous scaffold for tissue engineering by using lamellar single crystals. POLYM INT 2012. [DOI: 10.1002/pi.4197] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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Martinelli A, Calì M, D'Ilario L, Francolini I, Piozzi A. Effect of nucleation mechanism on complex poly(L-lactide) nonisothermal crystallization process, part 2: Crystallization kinetics analysis. J Appl Polym Sci 2011. [DOI: 10.1002/app.34833] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Huang S, Li H, Jiang S, Chen X, An L. Crystal structure and morphology influenced by shear effect of poly(l-lactide) and its melting behavior revealed by WAXD, DSC and in-situ POM. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.05.044] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Huang S, Li H, Jiang S, Chen X, An L. Morphologies and structures in poly(l-lactide-b-ethylene oxide) copolymers determined by crystallization, microphase separation, and vitrification. Polym Bull (Berl) 2011. [DOI: 10.1007/s00289-011-0518-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Martinelli A, Calì M, D'Ilario L, Francolini I, Piozzi A. Effect of the nucleation mechanism on complex poly(L-lactide) nonisothermal crystallization process. Part 1: Thermal and structural characterization. J Appl Polym Sci 2011. [DOI: 10.1002/app.33978] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ren Y, Ma A, Li J, Jiang X, Ma Y, Toda A, Hu W. Melting of polymer single crystals studied by dynamic Monte Carlo simulations. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2010; 33:189-202. [PMID: 20957404 DOI: 10.1140/epje/i2010-10661-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 06/30/2010] [Accepted: 09/27/2010] [Indexed: 05/30/2023]
Abstract
We report dynamic Monte Carlo simulations of lattice polymers melting from a metastable chain-folded lamellar single crystal. The single crystal was raised and then melted in an ultrathin film of polymers wetting on a solid substrate, mimicking the melting observations made by using Atomic Force Microscopy. We observed that the thickness distribution of the single crystal appears quite inhomogeneous and the thickness increases gradually from facetted edges to the center. Therefore, at low melting temperatures, melting stops at a certain crystal thickness, and melting-recrystallization occurs when allowing crystal thickening; at intermediate temperatures, melting maintains the crystal shape and exhibits different speeds in two stages; at high temperatures, fast melting makes a melting hole in the thinnest region, as well as a saw-tooth-like pattern at the crystal edges. In addition, the linear melting rates at low temperatures align on the curve extrapolated from the linear crystal growth rates. The temperature dependence of the melting rates exhibits a regime transition similar to crystal growth. Such kinetic symmetry persists in the melting rates with variable frictional barriers for c -slip diffusion in the crystal as well as with variable chain lengths. Visual inspections revealed highly frequent reversals upon melting of single chains at the wedge-shaped lateral front of the lamellar crystal. We concluded that the melting kinetics is dominated by the reverse process of intramolecular secondary crystal nucleation of polymers.
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Affiliation(s)
- Y Ren
- Department of Polymer Science and Engineering, Nanjing University, China
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25
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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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Vasanthan N, Ly O. Effect of microstructure on hydrolytic degradation studies of poly (l-lactic acid) by FTIR spectroscopy and differential scanning calorimetry. Polym Degrad Stab 2009. [DOI: 10.1016/j.polymdegradstab.2009.05.015] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Núñez E, Vancso GJ, Gedde UW. Morphology, Crystallization, and Melting of Single Crystals and Thin Films of Star‐branched Polyesters with Poly(ϵ‐caprolactone) Arms as Revealed by Atomic Force Microscopy. J MACROMOL SCI B 2008. [DOI: 10.1080/00222340801955636] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- E. Núñez
- a Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology , Stockholm, Sweden
| | - G. J. Vancso
- b Materials Science and Technology of Polymers, University of Twente , Enschede, The Netherlands
| | - U. W. Gedde
- a Fibre and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology , Stockholm, Sweden
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Fujita M, Sawayanagi T, Abe H, Tanaka T, Iwata T, Ito K, Fujisawa T, Maeda M. Stereocomplex Formation through Reorganization of Poly(l-lactic acid) and Poly(d-lactic acid) Crystals. Macromolecules 2008. [DOI: 10.1021/ma7024489] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Masahiro Fujita
- Bioengineering Laboratory and Chemical Analysis Team, RIKEN Institute, Hirosawa 2-1, Wako, Saitama 351-0198, Japan; Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan; Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan; Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan; RIKEN Harima Institute,
| | - Tomoharu Sawayanagi
- Bioengineering Laboratory and Chemical Analysis Team, RIKEN Institute, Hirosawa 2-1, Wako, Saitama 351-0198, Japan; Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan; Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan; Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan; RIKEN Harima Institute,
| | - Hideki Abe
- Bioengineering Laboratory and Chemical Analysis Team, RIKEN Institute, Hirosawa 2-1, Wako, Saitama 351-0198, Japan; Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan; Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan; Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan; RIKEN Harima Institute,
| | - Toshihisa Tanaka
- Bioengineering Laboratory and Chemical Analysis Team, RIKEN Institute, Hirosawa 2-1, Wako, Saitama 351-0198, Japan; Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan; Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan; Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan; RIKEN Harima Institute,
| | - Tadahisa Iwata
- Bioengineering Laboratory and Chemical Analysis Team, RIKEN Institute, Hirosawa 2-1, Wako, Saitama 351-0198, Japan; Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan; Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan; Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan; RIKEN Harima Institute,
| | - Kazuki Ito
- Bioengineering Laboratory and Chemical Analysis Team, RIKEN Institute, Hirosawa 2-1, Wako, Saitama 351-0198, Japan; Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan; Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan; Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan; RIKEN Harima Institute,
| | - Tetsuro Fujisawa
- Bioengineering Laboratory and Chemical Analysis Team, RIKEN Institute, Hirosawa 2-1, Wako, Saitama 351-0198, Japan; Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan; Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan; Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan; RIKEN Harima Institute,
| | - Mizuo Maeda
- Bioengineering Laboratory and Chemical Analysis Team, RIKEN Institute, Hirosawa 2-1, Wako, Saitama 351-0198, Japan; Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan; Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan; Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan; RIKEN Harima Institute,
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Luo C, Huang W, Wang H, Han Y. Formation of nonextinct ring-banded textures and multistacked lamella of tetra-aniline-block-poly(L-lactide) rod-coil diblock oligomer films induced by solvent vapor treatment. J Chem Phys 2007; 127:244903. [DOI: 10.1063/1.2812958] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Salmerón Sánchez M, Mathot VBF, Vanden Poel G, Gómez Ribelles JL. Effect of the Cooling Rate on the Nucleation Kinetics of Poly(l-Lactic Acid) and Its Influence on Morphology. Macromolecules 2007. [DOI: 10.1021/ma0712706] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manuel Salmerón Sánchez
- Center for Biomaterials, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain, Centro de Investigación Príncipe Felipe, Autopista del Saler 16, 46013 Valencia, Spain, Laboratory for Macromolecular Structural Chemistry, Division of Molecular and Nanomaterials, Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Heverlee, Belgium, SciTe, Ridder Vosstraat 6, 6162 AX Geleen, The Netherlands, and DSM Research, Geleen, PO Box 18, 6160 MD Geleen, The
| | - Vincent B. F. Mathot
- Center for Biomaterials, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain, Centro de Investigación Príncipe Felipe, Autopista del Saler 16, 46013 Valencia, Spain, Laboratory for Macromolecular Structural Chemistry, Division of Molecular and Nanomaterials, Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Heverlee, Belgium, SciTe, Ridder Vosstraat 6, 6162 AX Geleen, The Netherlands, and DSM Research, Geleen, PO Box 18, 6160 MD Geleen, The
| | - Geert Vanden Poel
- Center for Biomaterials, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain, Centro de Investigación Príncipe Felipe, Autopista del Saler 16, 46013 Valencia, Spain, Laboratory for Macromolecular Structural Chemistry, Division of Molecular and Nanomaterials, Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Heverlee, Belgium, SciTe, Ridder Vosstraat 6, 6162 AX Geleen, The Netherlands, and DSM Research, Geleen, PO Box 18, 6160 MD Geleen, The
| | - José Luis Gómez Ribelles
- Center for Biomaterials, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain, Centro de Investigación Príncipe Felipe, Autopista del Saler 16, 46013 Valencia, Spain, Laboratory for Macromolecular Structural Chemistry, Division of Molecular and Nanomaterials, Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Heverlee, Belgium, SciTe, Ridder Vosstraat 6, 6162 AX Geleen, The Netherlands, and DSM Research, Geleen, PO Box 18, 6160 MD Geleen, The
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D'Ilario L, Francolini I, Martinelli A, Piozzi A. Dipyridamole-Loaded Poly(L-lactide) Single Crystals as Drug Delivery Systems. Macromol Rapid Commun 2007. [DOI: 10.1002/marc.200700224] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Fujita M, Takikawa Y, Sakuma H, Teramachi S, Kikkawa Y, Doi Y. Real-Time Observations of Oriented Crystallization of Poly(ɛ-caprolactone) Thin Film, Induced by an AFM Tip. MACROMOL CHEM PHYS 2007. [DOI: 10.1002/macp.200700208] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yasuniwa M, Iura K, Dan Y. Melting behavior of poly(l-lactic acid): Effects of crystallization temperature and time. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.07.012] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wei Y, Pan C, Li B, Han Y. Self-assembly morphology effects on the crystallization of semicrystalline block copolymer thin film. J Chem Phys 2007; 126:104902. [PMID: 17362082 DOI: 10.1063/1.2711437] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Self-assembly morphology effects on the crystalline behavior of asymmetric semicrystalline block copolymer polystyrene-block-poly(L-lactic acid) thin film were investigated. Firstly, a series of distinctive self-assembly aggregates, from spherical to ellipsoid and rhombic lamellar micelles (two different kinds of rhombic micelles, defined as rhomb 1 and rhomb 2) was prepared by means of promoting the solvent selectivity. Then, the effects of these self-assembly aggregates on crystallization at the early stage of film evolution were investigated by in situ hot stage atomic force microscopy. Heterogeneous nucleation initiated from the spherical micelles and dendrites with flat on crystals appeared with increasing temperature. At high temperature, protruding structures were observed due to the thickening of the flat-on crystals and finally more thermodynamically stable crystallization formed. Annealing the rhombic lamellar micelles resulted in different phenomena. Turtle-shell-like crystalline structure initiated from the periphery of the rhombic micelle 1 and spread over the whole film surface in the presence of mostly noncrystalline domain interior. Erosion and small hole appeared at the surface of the rhombic lamellar micelle 2; no crystallization like that in rhomb 1 occurred. It indicated that the chain-folding degree was different in these two micelles, which resulted in different annealing behaviors.
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Affiliation(s)
- Yuhan Wei
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
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Sawayanagi T, Tanaka T, Iwata T, Abe H, Doi Y, Ito K, Fujisawa T, Fujita M. Structural Transition of Poly[(R)-3-hydroxybutyrate-co-(R)-3- hydroxyvalerate] Single Crystals on Heating As Revealed by Synchrotron Radiation SAXS and WAXD. Macromolecules 2007. [DOI: 10.1021/ma062957d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomoharu Sawayanagi
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan; Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan; and Biometal Science Laboratory, RIKEN SPring-8 Center, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Toshihisa Tanaka
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan; Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan; and Biometal Science Laboratory, RIKEN SPring-8 Center, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tadahisa Iwata
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan; Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan; and Biometal Science Laboratory, RIKEN SPring-8 Center, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Hideki Abe
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan; Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan; and Biometal Science Laboratory, RIKEN SPring-8 Center, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Yoshiharu Doi
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan; Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan; and Biometal Science Laboratory, RIKEN SPring-8 Center, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Kazuki Ito
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan; Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan; and Biometal Science Laboratory, RIKEN SPring-8 Center, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tetsuro Fujisawa
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan; Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan; and Biometal Science Laboratory, RIKEN SPring-8 Center, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Masahiro Fujita
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan; Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan; and Biometal Science Laboratory, RIKEN SPring-8 Center, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
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Maillard D, Prud'homme RE. Chirality Information Transfer in Polylactides: From Main-Chain Chirality to Lamella Curvature. Macromolecules 2006. [DOI: 10.1021/ma060316c] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Damien Maillard
- Department of Chemistry, Université de Montréal, Pavillon J. A. Bombardier, 2900 Edouard Montpetit, H3T 1J4 Montreal, Quebec, Canada
| | - Robert E. Prud'homme
- Department of Chemistry, Université de Montréal, Pavillon J. A. Bombardier, 2900 Edouard Montpetit, H3T 1J4 Montreal, Quebec, Canada
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Sawayanagi T, Tanaka T, Iwata T, Abe H, Doi Y, Ito K, Fujisawa T, Fujita M. Real-Time Synchrotron SAXS and WAXD Studies on Annealing Behavior of Poly[(R)-3-hydroxybutyrate] Single Crystals. Macromolecules 2006. [DOI: 10.1021/ma052425h] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomoharu Sawayanagi
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan, Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan, and RIKEN Harima Institute/SPring-8, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Toshihisa Tanaka
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan, Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan, and RIKEN Harima Institute/SPring-8, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tadahisa Iwata
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan, Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan, and RIKEN Harima Institute/SPring-8, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Hideki Abe
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan, Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan, and RIKEN Harima Institute/SPring-8, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Yoshiharu Doi
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan, Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan, and RIKEN Harima Institute/SPring-8, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Kazuki Ito
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan, Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan, and RIKEN Harima Institute/SPring-8, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tetsuro Fujisawa
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan, Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan, and RIKEN Harima Institute/SPring-8, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Masahiro Fujita
- Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502, Japan, Polymer Chemistry Laboratory, RIKEN Institute, Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan, and RIKEN Harima Institute/SPring-8, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
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Di Lorenzo ML. Calorimetric analysis of the multiple melting behavior of poly(L-lactic acid). J Appl Polym Sci 2006. [DOI: 10.1002/app.23136] [Citation(s) in RCA: 145] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Synchrotron SAXS and WAXS Studies on Changes in Structural and Thermal Properties of Poly[(R)-3-hydroxybutyrate] Single Crystals during Heating. Macromol Rapid Commun 2005. [DOI: 10.1002/marc.200500030] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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