Nanophase-Separated Structures of Hydrogen-Bonded Interpolymer Complexes of AB Block Copolymer/C Homopolymer in Thin Film with Variable Blending Composition upon Solvent Annealing
文献类型：期刊论文
| 作者 | Wang QH(王齐华)1 ; Wang C(王超)1,2; Wang TM(王廷梅)1
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| 刊名 | Journal of Macromolecular Science Part B-Physics
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| 出版日期 | 2012 |
| 卷号 | 51期号:4页码:671-684 |
| 关键词 | block copolymer/homopolymer hydrogen-bonding nanophase-separated structures self-assembly solvent annealing |
| ISSN号 | 0022-2348 |
| 通讯作者 | 王超 |
| 英文摘要 | The self-assembly behavior of hydrogen-bonded interpolymer complexes of poly(styrene)-b-poly(4-vinylpyridine) (PS-b-P4VP)/poly(4,4′-oxydiphenylenepyrome llitamic) acid (POAA) in thin films with variable POAA weight content upon solvent annealing in benzene/N-methy1-2-pyrrolidone (NMP) mixture vapor was investigated. It was found that when the PS-b-P4VP/POAA thin film blends were annealed in a benzene/NMP (0.97/0.03, in volume) mixture vapor, the thin film blends with a high POAA wt%, above 40%, exhibited a mixture of spherical and rod-like microphase-separated structure, while the thin film blends with a POAA wt% lower than 40% were homogenous. For the blends in thin films with a POAA wt% of less than 40%, the benzene/NMP (0.97/0.03, in volume) vapor was highly miscible with both the PS blocks and P4VP/POAA complexes, which led to decrease of segregated repulsion between the two components and no obvious microphase separation could be achieved. When the PS-b-P4VP/POAA blends in thin films with POAA wt% of 20%, 50%, and 70% were annealed in benzene/NMP with a volume ratio of 0.99/0.01, obvious microphase separation was observed for all films due to increasing PS-selectivity of the mixture vapor. However, the phase structure of blends in thin film with POAA wt% of 50% and 70% consisted of PS microdomains dispersed within the P4VP/POAA matrix, while the blends in thin film with POAA wt% of 20% revealed an opposite phase structure with P4VP/POAA microdomains surrounded by the PS matrix. The transition could be attributed to the increasing free volume of PS domains relative to that of P4VP/POAA due to swelling by benzene vapor during annealing. |
| 学科主题 | 材料科学与物理化学 |
| 收录类别 | SCI |
| 资助信息 | the National Science Foundation for Distinguished Young Scholars of China (Grant No. 51025517);the InnovativeGroup Foundation of NSFC (Grant No. 50721062);the National 973 Project of China (2007CB607606) |
| 语种 | 英语 |
| WOS记录号 | WOS:000304422900007 |
| 公开日期 | 2013-07-12 |
| 源URL | [http://210.77.64.217/handle/362003/3357]  |
| 专题 | 兰州化学物理研究所_固体润滑国家重点实验室 兰州化学物理研究所_先进润滑与防护材料研究发展中心 |
| 作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang QH,Wang C,Wang TM. Nanophase-Separated Structures of Hydrogen-Bonded Interpolymer Complexes of AB Block Copolymer/C Homopolymer in Thin Film with Variable Blending Composition upon Solvent Annealing[J]. Journal of Macromolecular Science Part B-Physics,2012,51(4):671-684. |
| APA | Wang QH,Wang C,&Wang TM.(2012).Nanophase-Separated Structures of Hydrogen-Bonded Interpolymer Complexes of AB Block Copolymer/C Homopolymer in Thin Film with Variable Blending Composition upon Solvent Annealing.Journal of Macromolecular Science Part B-Physics,51(4),671-684. |
| MLA | Wang QH,et al."Nanophase-Separated Structures of Hydrogen-Bonded Interpolymer Complexes of AB Block Copolymer/C Homopolymer in Thin Film with Variable Blending Composition upon Solvent Annealing".Journal of Macromolecular Science Part B-Physics 51.4(2012):671-684. |
入库方式： OAI收割
来源：兰州化学物理研究所
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