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Crystallization and polymorphic behaviour of melt miscible blends of crystalline homopolymers with close melting temperatures under confinement. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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2
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Pal S, Srivastava RK, Nandan B. Effect of spinning solvent on crystallization behavior of confined polymers in electrospun nanofibers. POLYMER CRYSTALLIZATION 2021. [DOI: 10.1002/pcr2.10209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Sanchayan Pal
- Department of Textile and Fibre Engineering Indian Institute of Technology Delhi New Delhi Delhi India
| | - Rajiv K. Srivastava
- Department of Textile and Fibre Engineering Indian Institute of Technology Delhi New Delhi Delhi India
| | - Bhanu Nandan
- Department of Textile and Fibre Engineering Indian Institute of Technology Delhi New Delhi Delhi India
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Doi T, Takagi H, Shimizu N, Igarashi N, Sakurai S. Stress-Strain and Stress-Relaxation Behaviors of Solution-Coated Layers Composed of Block Copolymers Mixed with Tackifiers. ACS OMEGA 2021; 6:17299-17313. [PMID: 34278116 PMCID: PMC8280650 DOI: 10.1021/acsomega.1c01367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 05/28/2021] [Indexed: 06/13/2023]
Abstract
The relationship between the mechanical properties and the structure of block copolymers mixed with tackifiers whose relative solubility to the respective components of block copolymers differs was examined. Coated layers were prepared by solution coating using a block copolymer composed of polystyrene (PS) and polyisoprene (PI), which forms spherical microdomains of PS in the PI matrix, mixed with three types of tackifiers: aliphatic (C5) resin, aliphatic-aromatic (C5-C9) resin, and rosin ester (RE) resin. Furthermore, the correlation between the changes in the nanostructure and mechanical properties including the stress-relaxation behaviors was clarified by two-dimensional small-angle X-ray scattering measurement. The amount of the PI-bridge conformation in the case of C5 resin is the lowest, resulting in the lowest stress. On the contrary, the largest amount of RE resin was solubilized in the PS phase so that it can be considered that pulling out of the PS chains took place easily. We were able to explain the stress-relaxation behavior by fitting with the three-component exponent functions. The triple exponential decay functions indicate the hierarchy of the structures that are the origins of the ″fast mode″ relating to the local relaxation due to the rotation of the repeating unit of polymer chains; the ″intermediate mode″ of the disentanglement of the mid-PI chains; and the ″slow mode″ relating to, in this particular case, pulling out of the PS chains from the PS sphere.
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Affiliation(s)
- Takahiro Doi
- Advanced
and Applied Research Institute, Nichiban Co., Ltd., Nihongi-Shinmachi, Anjo, Aichi 446-8531, Japan
| | - Hideaki Takagi
- Photon
Factory, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
| | - Nobutaka Shimizu
- Photon
Factory, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
| | - Noriyuki Igarashi
- Photon
Factory, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
| | - Shinichi Sakurai
- Department
of Biobased Materials Science, Kyoto Institute
of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
- Department
of Chemical Engineering, Indian Institute
of Technology Guwahati, Guwahati, Kamrup, Assam 781-039, India
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Dobies M, Makrocka-Rydzyk M, Jenczyk J, Jarek M, Spontak RJ, Jurga S. Molecular Dynamics Study of Polystyrene-b-poly(ethylene oxide) Asymmetric Diblock Copolymer Systems. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8856-8868. [PMID: 28814072 DOI: 10.1021/acs.langmuir.7b02017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Two polystyrene-b-poly(ethylene oxide) (PS-b-PEO) diblock copolymers differing in molecular mass (49 and 78 kDa) but possessing the same PEO cylindrical morphology are examined to elucidate their molecular dynamics. Of particular interest here is the molecular motion of the PEO blocks involved in the rigid amorphous fraction (RAF). An analysis of complementary thermal calorimetry and X-ray scattering data confirms the presence of microphase-separated morphology as well as semicrystalline structure in each copolymer. Molecular motion within the copolymer systems is monitored by dielectric and nuclear magnetic resonance spectroscopies. The results reported herein reveal the existence of two local Arrhenius-type processes attributed to the noncooperative local motion of PEO segments involved in fully amorphous and rigid amorphous PEO microphases. In both systems, two structural relaxations governed by glass-transition phenomena are identified and assigned to cooperative segmental motion in the fully amorphous phase (the α process) and the RAF (the αc process). We measure the temperature dependence of the dynamics associated with all of the processes mentioned above and propose that these local processes are associated with corresponding cooperative segmental motion in both copolymer systems. In marked contrast to the thermal activation of the α process as discerned in both copolymers, the αc process appears to be a sensitive probe of the copolymer nanostructure. That is, the copolymer with shorter PEO blocks exhibits more highly restricted cooperative dynamics of PEO segments in the RAF, which can be explained in terms of the greater constraint imposed by the glassy PS matrix on the PEO blocks comprising smaller cylindrical microdomains.
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Affiliation(s)
| | | | | | | | - R J Spontak
- Departments of Chemical & Biomolecular Engineering and Materials Science & Engineering, North Carolina State University , Raleigh, North Carolina 27695, United States
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Samanta P, Srivastava R, Nandan B, Chen HL. Crystallization behavior of crystalline/crystalline polymer blends under confinement in electrospun nanofibers of polystyrene/poly(ethylene oxide)/poly(ε-caprolactone) ternary mixtures. SOFT MATTER 2017; 13:1569-1582. [PMID: 28127604 DOI: 10.1039/c6sm02748b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We have studied the crystallization behavior of crystalline/crystalline blends of poly(ethylene oxide) (PEO) and poly(ε-caprolactone) (PCL) in electrospun nanofibers fabricated from ternary blends of polystyrene (PS), PEO, and PCL, where PS was present as the majority component. It was demonstrated previously that PEO in PS/PEO binary blend nanofibers with a low PEO weight fraction (≦0.2) crystallized predominantly through homogenous nucleation due to the small PEO domain size which excluded the presence of heterogeneities (Soft Matter, 2016, 12, 5110). Here, it was found that PCL in PS/PCL binary blend nanofibers exhibited similar behavior, but at a much lower weight fraction of PCL (≦0.1) due to the presence of an inherently higher concentration of heterogeneities in the PCL homopolymer. In the PS/PEO/PCL ternary blend nanofibers, where the combined weight fraction of PEO and PCL was kept at 0.2 or less, the crystallization of the two components took place separately through both heterogeneous and homogenous nucleation mechanisms. The phase segregated crystallization behavior was further confirmed by the melting behavior of the blend nanofibers and wide angle X-ray diffraction (WAXD) measurements. Most significantly, the homogenous nucleation of both PEO and PCL was suppressed whereas the heterogeneous nucleation was enhanced in the ternary blend nanofibers even at very low weight fraction of PEO or PCL. This was plausibly attributed to the coupling between the crystallization and the liquid-liquid phase separation (LLPS) of the PEO/PCL mixture dispersed in the PS matrix during non-isothermal cooling of the blend nanofibers. Furthermore, it was observed that thermal treatment of the PS/PEO/PCL blend nanofibers above the glass transition temperature of PS further promoted the heterogeneous nucleation-initiated crystallization of PEO because of a complex interplay between Plateau-Rayleigh instability-induced domain breakup and its further coalescence and demixing within the PEO/PCL domains embedded in the PS matrix.
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Affiliation(s)
- Pratick Samanta
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Rajiv Srivastava
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Bhanu Nandan
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Hsin-Lung Chen
- Department of Chemical Engineering and Frontier Centre of Fundamental and Applied Sciences of Matters, National Tsing-Hua University, Hsinchu 30013, Taiwan.
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6
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Samanta P, V T, Singh S, Srivastava R, Nandan B, Liu CL, Chen HL. Crystallization behaviour of poly(ethylene oxide) under confinement in the electrospun nanofibers of polystyrene/poly(ethylene oxide) blends. SOFT MATTER 2016; 12:5110-5120. [PMID: 27184694 DOI: 10.1039/c6sm00648e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have studied the confined crystallization behaviour of poly(ethylene oxide) (PEO) in the electrospun nanofibers of the phase-separated blends of polystyrene (PS) and PEO, where PS was present as the major component. The size and shape of PEO domains in the nanofibers were considerably different from those in the cast films, presumably because of the nano-dimensions of the nanofibers and the extensional forces experienced by the polymer solution during electrospinning. The phase-separated morphology in turn influenced the crystallization behaviour of PEO in the blend nanofibers. At a PEO weight fraction of ≥0.3, crystallization occurred through a heterogeneous nucleation mechanism similar to that in cast blend films. However, as the PEO weight fraction in the blend nanofibers was reduced from 0.3 to 0.2, an abrupt transformation of the nucleation mechanism from the heterogeneous to predominantly homogenous type was observed. The change in the nucleation mechanism implied a drastic reduction of the spatial continuity of PEO domains in the nanofibers, which was not encountered in the cast film. The melting temperature and crystallinity of the PEO crystallites developed in the nanofibers were also significantly lower than those in the corresponding cast films. The phenomena observed were reconciled by the morphological observation, which revealed that the phase separation under the radial constraint of the nanofibers led to the formation of small-sized fibrillar PEO domains with limited spatial connectivity. The thermal treatment of the PS/PEO blend nanofibers above the glass transition temperature of PS induced an even stronger confinement effect on PEO crystallization.
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Affiliation(s)
- Pratick Samanta
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
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8
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Harirchian-Saei S, Wang MCP, Gates BD, Moffitt MG. Simultaneous patterning of two different types of nanoparticles into alternating domains of a striped array of a polymer blend in a single spin-casting step. J Colloid Interface Sci 2014; 433:123-132. [PMID: 25128863 DOI: 10.1016/j.jcis.2014.07.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 07/14/2014] [Accepted: 07/18/2014] [Indexed: 11/28/2022]
Abstract
A fast and convenient method is developed for simultaneously patterning inorganic nanoparticles with different optical, electronic or magnetic functionality to specific surface regions, by spin-casting onto microcontact printed substrates blend solutions in which the two nanoparticle types are functionalized with surface polymer brush layers of different surface energies. The process is based on phase separation of different nanoparticles based on their immiscible brush layers during spin-casting, with the underlying surface energy heterogeneity of the patterned substrate directing the different NP types to domains of different surface energies. Here, we specifically demonstrate the simultaneous localization of cadmium sulfide quantum dots (CdS QDs), addressed with a surface layer of polystyrene (PS), and silver nanoparticles (Ag NPs), addressed with a surface layer of poly(methyl methacrylate) (PMMA), onto the non-polar and polar surface domains, respectively, of hydrophilic glass patterned with hydrophobic octadecyltrichlorosilane (OTS) stripe arrays with micron-scale periodicities. In order to prevent gelation of solvent-swollen polymer-brush coated NPs during spin casting, which effects strong kinetic constraints on phase separation and localization, PS, PMMA or PS/PMMA homopolymer blends of sufficiently high Mw were added to the NP blends to increase the free volume between approaching NPs. The process parameters were fine-tuned to obtain control over defects in the obtained patterns.
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Affiliation(s)
- Saman Harirchian-Saei
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - Michael C P Wang
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Byron D Gates
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Matthew G Moffitt
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC V8W 3V6, Canada.
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9
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Shi H, Shi D, Luan S, Jiang T, Yin J, Li RKY, Jiang S. Crystallization behavior of polyamide 6 confined in a strip-like rubbery phase. RSC Adv 2013. [DOI: 10.1039/c3ra45141k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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10
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Chu WC, Li JG, Kuo SW. From flexible to mesoporous polybenzoxazine resins templated by poly(ethylene oxide-b-ε-caprolactone) copolymer through reaction induced microphase separation mechanism. RSC Adv 2013. [DOI: 10.1039/c3ra23447a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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12
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Li JG, Lin YD, Kuo SW. From Microphase Separation to Self-Organized Mesoporous Phenolic Resin through Competitive Hydrogen Bonding with Double-Crystalline Diblock Copolymers of Poly(ethylene oxide-b-ε-caprolactone). Macromolecules 2011. [DOI: 10.1021/ma2010734] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jheng-Guang Li
- Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan
| | - Yu-De Lin
- Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan
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Li JG, Kuo SW. Phase behavior of mesoporous nanostructures templated by amphiphilic crystalline–crystalline diblock copolymers of poly(ethylene oxide-b-ε-caprolactone). RSC Adv 2011. [DOI: 10.1039/c1ra00349f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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14
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Rocco AM, de Assis Carias A, Pereira RP. Polymer electrolytes based on a ternary miscible blend of poly(ethylene oxide), poly(bisphenol A-co-epichlorohydrin) and poly(vinyl ethyl ether). POLYMER 2010. [DOI: 10.1016/j.polymer.2010.08.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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15
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Chen WC, Kuo SW, Chang FC. Self-assembly of an A–B diblock copolymer blended with a C homopolymer and a C–D diblock copolymer through hydrogen bonding interaction. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.07.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Lu CH, Kuo SW, Chang WT, Chang FC. The Self-Assembled Structure of the Diblock Copolymer PCL-b-P4VP Transforms Upon Competitive Interactions with Octaphenol Polyhedral Oligomeric Silsesquioxane. Macromol Rapid Commun 2009; 30:2121-7. [DOI: 10.1002/marc.200900437] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2009] [Indexed: 11/06/2022]
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17
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Luo C, Han X, Gao Y, Liu H, Hu Y. Crystallization behavior of “wet brush” and “dry brush” blends of PS-b-PEO-b-PS/h-PEO. J Appl Polym Sci 2009. [DOI: 10.1002/app.30004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Chen WC, Kuo SW, Lu CH, Jeng US, Chang FC. Self-Assembly Structures through Competitive Interactions of Crystalline−Amorphous Diblock Copolymer/Homopolymer Blends: Poly(ε-caprolactone-b-4-vinyl pyridine)/Poly(vinyl phenol). Macromolecules 2009. [DOI: 10.1021/ma900080v] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wan-Chun Chen
- Institute of Applied Chemistry, National Chiao Tung University, Hsin Chu, Taiwan, Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, Taiwan, and National Synchrotron Radiation Research Center, Hsinchu Science Park, Taiwan
| | - Shiao-Wei Kuo
- Institute of Applied Chemistry, National Chiao Tung University, Hsin Chu, Taiwan, Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, Taiwan, and National Synchrotron Radiation Research Center, Hsinchu Science Park, Taiwan
| | - Chu-Hua Lu
- Institute of Applied Chemistry, National Chiao Tung University, Hsin Chu, Taiwan, Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, Taiwan, and National Synchrotron Radiation Research Center, Hsinchu Science Park, Taiwan
| | - U-Ser Jeng
- Institute of Applied Chemistry, National Chiao Tung University, Hsin Chu, Taiwan, Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, Taiwan, and National Synchrotron Radiation Research Center, Hsinchu Science Park, Taiwan
| | - Feng-Chih Chang
- Institute of Applied Chemistry, National Chiao Tung University, Hsin Chu, Taiwan, Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, Taiwan, and National Synchrotron Radiation Research Center, Hsinchu Science Park, Taiwan
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19
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Zhang Z, Wang F. Aggregation Behavior of Polyether Block Copolymers with Dendritic Structure in Aqueous Solutions. J DISPER SCI TECHNOL 2008. [DOI: 10.1080/01932690701817669] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Liu XB, Zhao YF, Chen EQ, Ye C, Shen ZH, Fan XH, Cheng SZD, Zhou QF. Lamella-to-Lamella Transition and Effect of Coil-Stretching on Crystallization in a Rod−Coil Diblock Copolymer Containing Poly(ϵ-caprolactone). Macromolecules 2008. [DOI: 10.1021/ma800517k] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xuan-Bo Liu
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China, and Maurice Morton Institute and Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA
| | - Yong-Feng Zhao
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China, and Maurice Morton Institute and Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA
| | - Er-Qiang Chen
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China, and Maurice Morton Institute and Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA
| | - Chun Ye
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China, and Maurice Morton Institute and Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA
| | - Zhi-Hao Shen
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China, and Maurice Morton Institute and Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA
| | - Xing-He Fan
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China, and Maurice Morton Institute and Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA
| | - Stephen Z. D. Cheng
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China, and Maurice Morton Institute and Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA
| | - Qi-Feng Zhou
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China, and Maurice Morton Institute and Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA
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Boschetti-de-Fierro A, Lorenzo AT, Müller AJ, Schmalz H, Abetz V. Crystallization Kinetics of PEO and PE in Different Triblock Terpolymers: Effect of Microdomain Geometry and Confinement. MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200700434] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Ji Y, Lian L, Liang B. Crystallization Behavior of PEO in Nano‐Structured PEO‐b‐PS/PPO Blends. J MACROMOL SCI B 2007. [DOI: 10.1080/00222340701629315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Yali Ji
- a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials , College of Material Science and Engineering, Donghua University , Shanghai, P. R. China
| | - Liming Lian
- a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials , College of Material Science and Engineering, Donghua University , Shanghai, P. R. China
| | - Borun Liang
- a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials , College of Material Science and Engineering, Donghua University , Shanghai, P. R. China
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Hsu JY, Hsieh IF, Nandan B, Chiu FC, Chen JH, Jeng US, Chen HL. Crystallization Kinetics and Crystallization-Induced Morphological Formation in the Blends of Poly(ε-caprolactone)-block-polybutadiene and Polybutadiene Homopolymer. Macromolecules 2007. [DOI: 10.1021/ma070369+] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Nandan B, Hsu J, Chen H. Crystallization Behavior of Crystalline‐Amorphous Diblock Copolymers Consisting of a Rubbery Amorphous Block. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/15321790600646802] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Correlation between crystallization kinetics and melt phase behavior of crystalline–amorphous block copolymer/homopolymer blends. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.10.054] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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26
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Peng J, Gao X, Wei Y, Wang H, Li B, Han Y. Controlling the size of nanostructures in thin films via blending of block copolymers and homopolymers. J Chem Phys 2005; 122:114706. [PMID: 15836242 DOI: 10.1063/1.1858854] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The effects of molecular weight and concentration of poly (methyl methacrylate) (PMMA) homopolymer or symmetric short polystyrene-block-poly (methyl methacrylate) (PS-b-PMMA) diblock copolymer on the size of the nanostructures of its blends with symmetric long PS-b-PMMA diblock copolymer have been investigated by atomic force microscopy. By careful controlling of the film thickness, solvent selectivity, and annealing time, PMMA cylindrical microdomains oriented normal to the film surface were obtained in all thin films. With the addition of both low- and high-molecular-weight PMMA homopolymers, the cylindrical domain sizes increased although it was less obvious for the lower molecular weight homopolymer. In contrast to the homopolymer, adding the short chain diblock copolymer resulted in a decrease in the cylindrical domain size, which was ascribed to the reduction of the interfacial tension and increase in the stretching energy.
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Affiliation(s)
- Juan Peng
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, People's Republic of China
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27
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Tsao CS, Chen HL. Concurrent Transformation of Copolymer Domain Morphology Induced by the Order−Disorder Transition of Comb Block in Supramolecular Comb−Coil Block Copolymer. Macromolecules 2004. [DOI: 10.1021/ma048526h] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cheng-Si Tsao
- Institute of Nuclear Energy Research, Longtan, Taoyuan 325, Taiwan, R.O.C., and Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu 30013, Taiwan, R.O.C
| | - Hsin-Lung Chen
- Institute of Nuclear Energy Research, Longtan, Taoyuan 325, Taiwan, R.O.C., and Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu 30013, Taiwan, R.O.C
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Huang YY, Yang CH, Chen HL, Chiu FC, Lin TL, Liou W. Crystallization-Induced Microdomain Coalescence in Sphere-Forming Crystalline−Amorphous Diblock Copolymer Systems: Neat Diblock versus the Corresponding Blends. Macromolecules 2003. [DOI: 10.1021/ma0351468] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yen-Yu Huang
- Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C.; Department of Engineering and System Science, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; and Department of Anatomy, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C
| | - Ching Hua Yang
- Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C.; Department of Engineering and System Science, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; and Department of Anatomy, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C
| | - Hsin-Lung Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C.; Department of Engineering and System Science, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; and Department of Anatomy, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C
| | - Fang-Choyu Chiu
- Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C.; Department of Engineering and System Science, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; and Department of Anatomy, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C
| | - Tsang-Lang Lin
- Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C.; Department of Engineering and System Science, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; and Department of Anatomy, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C
| | - Willisa Liou
- Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C.; Department of Engineering and System Science, National Tsing Hua University, Hsin-Chu, Taiwan 30013, R.O.C.; and Department of Anatomy, Chang Gung University, Kwei-San, Taoyuan 333, Taiwan, R.O.C
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