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DOI | 10.1126/science.aam7212 |
Thermal processing of diblock copolymer melts mimics metallurgy | |
Kim, Kyungtae1; Schulze, Morgan W.1,3; Arora, Akash1; Lewis, Ronald M., III1; Hillmyer, Marc A.2; Dorfman, Kevin D.1; Bates, Frank S.1 | |
2017-05-05 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 356期号:6337页码:520-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Small-angle x-ray scattering experiments conducted with compositionally asymmetric low molar mass poly(isoprene)-b-poly(lactide) diblock copolymers reveal an extraordinary thermal history dependence. The development of distinct periodic crystalline or aperiodic quasicrystalline states depends on how specimens are cooled from the disordered state to temperatures below the order-disorder transition temperature. Whereas direct cooling leads to the formation of documented morphologies, rapidly quenched samples that are then heated from low temperature form the hexagonal C14 and cubic C15 Laves phases commonly found in metal alloys. Self-consistent mean-field theory calculations show that these, and other associated Frank-Kasper phases, have nearly degenerate free energies, suggesting that processing history drives the material into long-lived metastable states defined by self-assembled particles with discrete populations of volumes and polyhedral shapes. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400545700033 |
WOS关键词 | FRANK-KASPER PHASES ; BLOCK-COPOLYMERS ; MICROPHASE SEPARATION ; PACKING ; ORDER ; DISCOVERY ; SYMMETRY ; POLYMERS ; DISORDER ; LATTICE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/195977 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Minnesota, Dept Chem Engn & Mat Sci, 421 Washington Ave SE, Minneapolis, MN 55455 USA; 2.Univ Minnesota, Dept Chem, 207 Pleasant St SE, Minneapolis, MN 55455 USA; 3.Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA |
推荐引用方式 GB/T 7714 | Kim, Kyungtae,Schulze, Morgan W.,Arora, Akash,et al. Thermal processing of diblock copolymer melts mimics metallurgy[J]. SCIENCE,2017,356(6337):520-+. |
APA | Kim, Kyungtae.,Schulze, Morgan W..,Arora, Akash.,Lewis, Ronald M., III.,Hillmyer, Marc A..,...&Bates, Frank S..(2017).Thermal processing of diblock copolymer melts mimics metallurgy.SCIENCE,356(6337),520-+. |
MLA | Kim, Kyungtae,et al."Thermal processing of diblock copolymer melts mimics metallurgy".SCIENCE 356.6337(2017):520-+. |
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