51
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Yang H, Cao XZ, Zhou B, Liu YS, Wu CX. Adding Nonconnected Monomers to Manage the Layering Crystallization of Polymers on Athermal Substrate. MACROMOL THEOR SIMUL 2017. [DOI: 10.1002/mats.201700068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Huan Yang
- Department of Physics; Zhejiang Sci-Tech University; Hangzhou 310018 P. R. China
| | - Xue-Zheng Cao
- Department of Physics; Zhejiang Sci-Tech University; Hangzhou 310018 P. R. China
- Department of Chemistry; University of North Carolina at Chapel-Hill; Chapel-Hill NC 27514 USA
| | - Bin Zhou
- Department of Physics; Zhejiang Sci-Tech University; Hangzhou 310018 P. R. China
| | - Yong-Song Liu
- Department of Physics; Zhejiang Sci-Tech University; Hangzhou 310018 P. R. China
| | - Chen-Xu Wu
- Department of Physics; Xiamen University; Xiamen 361005 P. R. China
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52
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A facile physical approach to make chitosan soluble in acid-free water. Int J Biol Macromol 2017; 103:575-580. [DOI: 10.1016/j.ijbiomac.2017.05.066] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 04/29/2017] [Accepted: 05/15/2017] [Indexed: 11/21/2022]
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53
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Kawazu K, Nakagawa S, Ishizone T, Nojima S, Arai D, Yamaguchi K, Nakahama S. Effects of Bulky End-Groups on the Crystallization Kinetics of Poly(ε-caprolactone) Homopolymers Confined in a Cylindrical Nanodomain. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01536] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Koshun Kawazu
- Department of Chemical Science
and Engineering, Tokyo Institute of Technology, H-125, 2-12-1 Ookayama Meguro-Ku, Tokyo 152-8552, Japan
| | - Shintaro Nakagawa
- Department of Chemical Science
and Engineering, Tokyo Institute of Technology, H-125, 2-12-1 Ookayama Meguro-Ku, Tokyo 152-8552, Japan
| | - Takashi Ishizone
- Department of Chemical Science
and Engineering, Tokyo Institute of Technology, H-125, 2-12-1 Ookayama Meguro-Ku, Tokyo 152-8552, Japan
| | - Shuichi Nojima
- Department of Chemical Science
and Engineering, Tokyo Institute of Technology, H-125, 2-12-1 Ookayama Meguro-Ku, Tokyo 152-8552, Japan
| | - Daiki Arai
- Department
of Chemistry, Faculty of Science, and ‡Research Institute for Photofunctionalized
Materials, Kanagawa University, 2941 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Kazuo Yamaguchi
- Department
of Chemistry, Faculty of Science, and ‡Research Institute for Photofunctionalized
Materials, Kanagawa University, 2941 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Seiichi Nakahama
- Department
of Chemistry, Faculty of Science, and ‡Research Institute for Photofunctionalized
Materials, Kanagawa University, 2941 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
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54
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Zhang B, Chen J, Liu B, Wang B, Shen C, Reiter R, Chen J, Reiter G. Morphological Changes of Isotactic Polypropylene Crystals Grown in Thin Films. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01381] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bin Zhang
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
| | - Jiajia Chen
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
| | - Baochen Liu
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
| | - Binghua Wang
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
| | - Changyu Shen
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
| | - Renate Reiter
- Institute
of Physics and Freiburg Materials Research Center, University of Freiburg, 79104 Freiburg, Germany
| | - Jingbo Chen
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
| | - Günter Reiter
- Institute
of Physics and Freiburg Materials Research Center, University of Freiburg, 79104 Freiburg, Germany
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55
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Crystalline and Spherulitic Morphology of Polymers Crystallized in Confined Systems. CRYSTALS 2017. [DOI: 10.3390/cryst7050147] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Due to the effects of microphase separation and physical dimensions, confinement widely exists in the multi-component polymer systems (e.g., polymer blends, copolymers) and the polymers having nanoscale dimensions, such as thin films and nanofibers. Semicrystalline polymers usually show different crystallization kinetics, crystalline structure and morphology from the bulk when they are confined in the nanoscale environments; this may dramatically influence the physical performances of the resulting materials. Therefore, investigations on the crystalline and spherulitic morphology of semicrystalline polymers in confined systems are essential from both scientific and technological viewpoints; significant progresses have been achieved in this field in recent years. In this article, we will review the recent research progresses on the crystalline and spherulitic morphology of polymers crystallized in the nanoscale confined environments. According to the types of confined systems, crystalline, spherulitic morphology and morphological evolution of semicrystalline polymers in the ultrathin films, miscible polymer blends and block copolymers will be summarized and reviewed.
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56
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Salminen R, Baccile N, Reza M, Kontturi E. Surface-Induced Frustration in Solid State Polymorphic Transition of Native Cellulose Nanocrystals. Biomacromolecules 2017; 18:1975-1982. [PMID: 28462998 DOI: 10.1021/acs.biomac.7b00463] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The presence of an interface generally influences crystallization of polymers from melt or from solution. Here, by contrast, we explore the effect of surface immobilization in a direct solid state polymorphic transition on individual cellulose nanocrystals (CNCs), extracted from a plant-based origin. The conversion from native cellulose I to cellulose III crystal occurred via a host-guest inclusion of ethylene diamine inside the crystal. A 60% reduction in CNC width (height) in atomic force microscopy images suggested that when immobilized on a flat modified silica surface, the stresses caused by the inclusion or the subsequent regeneration resulted in exfoliation, hypothetically, between the van der Waals bonded sheets within the crystal. Virtually no changes in dimensions were visible when the polymorphic transition was performed to nonimmobilized CNCs in bulk dispersion. With reservations and by acknowledging the obvious dissimilarities, the exfoliation of cellulose crystal sheets can be viewed as analogous to exfoliation of 2D structures like graphene from a van der Waals stacked solid. Here, the detachment is triggered by an inclusion of a guest molecule inside a host cellulose crystal and the stresses caused by the firm attachment of the CNC on a solid substrate, leading to detachment of molecular sheets or stacks of sheets.
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Affiliation(s)
- Reeta Salminen
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University , P.O. Box 16300, 00076 Aalto, Finland
| | - Niki Baccile
- Chimie de la Matière Condensée de Paris, Sorbonne Universités , 75005, Paris, France
| | - Mehedi Reza
- Department of Applied Physics, Aalto University , P.O. Box 11100, 00076 Aalto, Finland
| | - Eero Kontturi
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University , P.O. Box 16300, 00076 Aalto, Finland
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57
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Morphological Control of Polymer Spherulites via Manipulating Radial Lamellar Organization upon Evaporative Crystallization: A Mini Review. CRYSTALS 2017. [DOI: 10.3390/cryst7040115] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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58
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Woo EM, Lugito G, Tsai JH, Müller AJ. Hierarchically Diminishing Chirality Effects on Lamellar Assembly in Spherulites Comprising Chiral Polymers. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00350] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eamor M. Woo
- Department
of Chemical Engineering National Cheng Kung University, Tainan, 701, Taiwan
| | - Graecia Lugito
- Department
of Chemical Engineering National Cheng Kung University, Tainan, 701, Taiwan
| | - Jia-Hsuan Tsai
- Department
of Chemical Engineering National Cheng Kung University, Tainan, 701, Taiwan
| | - Alejandro J. Müller
- POLYMAT
and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
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59
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Shi S, Liu W, Nie M, Wang Q. Localized self-assembly and nucleation: a new strategy for preparing highly toughened polymer blends. RSC Adv 2016. [DOI: 10.1039/c6ra18461h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report a facile method to prepare advanced PA66/iPP hybrids with core-pompon structure via localized diffusion and self-assembly of β-nucleating agents.
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Affiliation(s)
- Shaohong Shi
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- China
| | - Wei Liu
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- China
- Institute of New Energy and Low-Carbon Technology
| | - Min Nie
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- China
| | - Qi Wang
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- China
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