发布求助
文献互助 智能选刊 最新文献

Journal of Polymer Science. Part B, Polymer Physics最新文献

筛选
英文 中文
Quantitative Image Analysis of Fractal‐Like Thin Films of Organic Semiconductors 有机半导体类分形薄膜的定量图像分析
3区 工程技术
Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2019-08-21 DOI: 10.26434/chemrxiv.6223610
Weikun Zhu, Erfan Mohammadi, Ying Diao
{"title":"Quantitative Image Analysis of Fractal‐Like Thin Films of Organic Semiconductors","authors":"Weikun Zhu, Erfan Mohammadi, Ying Diao","doi":"10.26434/chemrxiv.6223610","DOIUrl":"https://doi.org/10.26434/chemrxiv.6223610","url":null,"abstract":"Morphology modulation offers significant control over organic electronic device performance. However, morphology quantification has been rarely carried out via image analysis. In this work, we designed a MATLAB program to evaluate two key parameters describing morphology of small molecule semiconductor thin films: fractal dimension and film coverage. We then use this program in a case study of meniscus‐guided coating of 2,7‐dioctyl[1]benzothieno[3,2‐b][1]benzothiophene (C₈‐BTBT) under various conditions to analyze a diverse and complex morphology set. The evolution of morphology in terms of fractal dimension and film coverage was studied as a function of coating speed. We discovered that combined fractal dimension and film coverage can quantitatively capture the key characteristics of C₈‐BTBT thin film morphology; change of these two parameters further inform morphology transition. Furthermore, fractal dimension could potentially shed light on thin film growth mechanisms. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019, 57, 1622–1634","PeriodicalId":16853,"journal":{"name":"Journal of Polymer Science. Part B, Polymer Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44827488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Polymer Physics: A Molecular Approach 高分子物理:分子方法
3区 工程技术
Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2012-11-05 DOI: 10.1007/978-3-7091-0670-9
Wenbing Hu
{"title":"Polymer Physics: A Molecular Approach","authors":"Wenbing Hu","doi":"10.1007/978-3-7091-0670-9","DOIUrl":"https://doi.org/10.1007/978-3-7091-0670-9","url":null,"abstract":"","PeriodicalId":16853,"journal":{"name":"Journal of Polymer Science. Part B, Polymer Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88330546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 90
Abstraction of biochemical reaction systems on polytopes 多构体上生化反应体系的抽象
3区 工程技术
Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2011-01-01 DOI: 10.3182/20110828-6-IT-1002.03317
P. Collins, L.C.G.J.M. Habets, Schuppen van Jh, Ismael Cerna, J. Fabriková, David Šafránek
{"title":"Abstraction of biochemical reaction systems on polytopes","authors":"P. Collins, L.C.G.J.M. Habets, Schuppen van Jh, Ismael Cerna, J. Fabriková, David Šafránek","doi":"10.3182/20110828-6-IT-1002.03317","DOIUrl":"https://doi.org/10.3182/20110828-6-IT-1002.03317","url":null,"abstract":"Analysis of the dynamic behavior of large-scale biochemical reaction systems can be facilitated by abstraction followed by model checking. A biochemical reaction system can be approximated by a multi-affine system or an affine system on a rectangle. Either of these systems can be abstracted to an automaton. Model checking can then be employed to determine whether the dynamic behavior of the automaton satisfies specific properties. A relation between the system and its abstraction is proved; it is an over-approximation: any discrete state trajectory of the abstraction of the continuous state trajectory is contained in the automaton but the automaton may contain more behavior.","PeriodicalId":16853,"journal":{"name":"Journal of Polymer Science. Part B, Polymer Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86175512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Nonlocal electron-phonon coupling. Influence on the nature of polarons [refereed] 非局域电子-声子耦合。对极化子性质的影响[参考文献]
3区 工程技术
Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2004-01-01 DOI: 10.1002/PSSC.200303645
V. Stojanović, Pa Peter Bobbert, Maj Thijs Michels
{"title":"Nonlocal electron-phonon coupling. Influence on the nature of polarons [refereed]","authors":"V. Stojanović, Pa Peter Bobbert, Maj Thijs Michels","doi":"10.1002/PSSC.200303645","DOIUrl":"https://doi.org/10.1002/PSSC.200303645","url":null,"abstract":"We present a variational approach to an extended Holstein model, comprising both local and nonlocal electron-phonon coupling. The approach is based on the minimization of a Bogoliubov bound to the free energy of the coupled electron-phonon system, and is implemented for a one-dimensional nearest-neighbor model, with Einstein phonons. The ambivalent character of nonlocal coupling, which both promotes and hinders transport, is clearly observed. A salient feature of our results is that the local and nonlocal couplings can compensate each other, leading to a supression of polaronic effects.","PeriodicalId":16853,"journal":{"name":"Journal of Polymer Science. Part B, Polymer Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87050286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Nanocomposites of polyurethane with various organoclays: Thermomechanical properties, morphology, and gas permeability* This paper is dedicated to Prof. Jung Il Jin of Korea University, Seoul Korea, on the occasion of his 60th birthday. 聚氨酯与各种有机粘土的纳米复合材料:热力学性能、形态和透气性*这篇论文是在韩国首尔高丽大学Jung Il Jin教授60岁生日之际献给他的。
3区 工程技术
Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2002-04-01 DOI: 10.1002/POLB.10124.ABS
Jin-Hae Chang, Y. An
{"title":"Nanocomposites of polyurethane with various organoclays: Thermomechanical properties, morphology, and gas permeability* This paper is dedicated to Prof. Jung Il Jin of Korea University, Seoul Korea, on the occasion of his 60th birthday.","authors":"Jin-Hae Chang, Y. An","doi":"10.1002/POLB.10124.ABS","DOIUrl":"https://doi.org/10.1002/POLB.10124.ABS","url":null,"abstract":"","PeriodicalId":16853,"journal":{"name":"Journal of Polymer Science. Part B, Polymer Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82909632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Gas-transport properties in crosslinked polymers. I. Aliphatic polyurethane–acrylate-based adhesives 交联聚合物中的气体输运性质。脂肪族聚氨酯-丙烯酸酯基胶粘剂
3区 工程技术
Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2001-04-01 DOI: 10.1002/1099-0488(20010401)39:7<786::AID-POLB1053>3.0.CO;2-#
P. Tiemblo, J. Guzmán, E. Riande, E. F. Salvador, C. Peinado
{"title":"Gas-transport properties in crosslinked polymers. I. Aliphatic polyurethane–acrylate-based adhesives","authors":"P. Tiemblo, J. Guzmán, E. Riande, E. F. Salvador, C. Peinado","doi":"10.1002/1099-0488(20010401)39:7<786::AID-POLB1053>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/1099-0488(20010401)39:7<786::AID-POLB1053>3.0.CO;2-#","url":null,"abstract":"The gas-transport properties of one of a family of well-known adhesives, Loctite 350®, were studied. Permeability, solubility, and diffusivity coefficients, together with the activation energies of diffusion and permeation and the solution enthalpy, were determined from 20 to 40 °C for oxygen, nitrogen, carbon dioxide, and methane. Loctite 350® showed relatively high permselectivity and permeability for the gas pairs O2/N2 and CO2/CH4, especially for the former. The possibility of preparing very thin layers on various kinds of supports from these photocurable polymers makes them promising materials for gas-separation devices. © 2001 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 39: 786–795, 2001","PeriodicalId":16853,"journal":{"name":"Journal of Polymer Science. Part B, Polymer Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86444347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Water-sorption behaviors of poly(3,4'-oxydiphenylene pyromellitimide) films depending on the thickness variation 聚(3,4'-氧基二苯二胺)薄膜随厚度变化的吸水行为
3区 工程技术
Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2001-03-15 DOI: 10.1002/1099-0488(20010315)39:6<669::AID-POLB1041>3.0.CO;2-#
J. Seo, C. Han, Haksoo Han
{"title":"Water-sorption behaviors of poly(3,4'-oxydiphenylene pyromellitimide) films depending on the thickness variation","authors":"J. Seo, C. Han, Haksoo Han","doi":"10.1002/1099-0488(20010315)39:6<669::AID-POLB1041>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/1099-0488(20010315)39:6<669::AID-POLB1041>3.0.CO;2-#","url":null,"abstract":"The effect of film thickness on the water-sorption behaviors of poly(3,4′-oxydiphenylene pyromellitimide) (PMDA-3,4′ODA) films was gravimetrically investigated and interpreted with a Fickian diffusion model in films. The diffusion coefficient increased with increasing film thickness, whereas the water uptake and the activation energy decreased. Overall, the water-sorption behaviors of PMDA-3,4′ODA films are strongly dependent on the changes in morphological structure, which originated from the variation in the film thickness. As the film thickness increased, the molecular in-plane orientation decreased, consequently leading to the increased diffusion coefficient and decreased activation energy. In contrast, the water uptake decreased with increasing film thickness because of the increase in the out-of-plane packing order. The diffusion coefficient and activation energy were strongly dependent on the in-plane orientation in the films. © 2001 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 39: 669–676, 2001","PeriodicalId":16853,"journal":{"name":"Journal of Polymer Science. Part B, Polymer Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75977689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
On the influence of electron energy on iodine‐doped polyaniline formation by plasma polymerization 电子能量对等离子体聚合法制备碘掺杂聚苯胺的影响
3区 工程技术
Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2001-01-01 DOI: 10.1002/1099-0488(20010101)39:1<175::AID-POLB160>3.0.CO;2-#
M. Olayo, J. Morales, G. J. Cruz, R. Olayo, E. Ordoñez, S. Barocio
{"title":"On the influence of electron energy on iodine‐doped polyaniline formation by plasma polymerization","authors":"M. Olayo, J. Morales, G. J. Cruz, R. Olayo, E. Ordoñez, S. Barocio","doi":"10.1002/1099-0488(20010101)39:1<175::AID-POLB160>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/1099-0488(20010101)39:1<175::AID-POLB160>3.0.CO;2-#","url":null,"abstract":"The influences that both electron energy and density of a plasma bear on thin film formation are examined in the case of iodine-doped polyaniline polymerization. The plasma was produced by means of 13.5-MHz radiofrequency-generated glow discharges in low-pressure (ca. 10 -2 mbar) air between electrodes. Four representative inner regions of the reactor were selected according to the electron incidence. Given the uneven energy distribution found on the inside of this kind of reactors, variations in the polymer structure formed in the presence of iodine were found and studied by elemental analysis, thermogravimetry, infrared spectroscopy, and X-ray diffraction. The results indicate that the electric conductivity of polyaniline by plasma is a function of the iodine content and that such content is a function of the combined conditions of both reactor and plasma.","PeriodicalId":16853,"journal":{"name":"Journal of Polymer Science. Part B, Polymer Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83242757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 33
An investigation into the relationship between internal stress distribution and a change of poly-p-phenylenebenzobisoxazole (PBO) fiber structure 内应力分布与PBO纤维结构变化关系的研究
3区 工程技术
Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2000-11-15 DOI: 10.1002/1099-0488(20001115)38:22<2901::AID-POLB50>3.0.CO;2-#
T. Kitagawa, K. Yabuki
{"title":"An investigation into the relationship between internal stress distribution and a change of poly-p-phenylenebenzobisoxazole (PBO) fiber structure","authors":"T. Kitagawa, K. Yabuki","doi":"10.1002/1099-0488(20001115)38:22<2901::AID-POLB50>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/1099-0488(20001115)38:22<2901::AID-POLB50>3.0.CO;2-#","url":null,"abstract":"This study concerns stress distribution induced by external force in individual poly-p-phenylenebenzobisoxazole (PBO) molecules in fiber. In reality, there are no fibers having an ideal structure (i.e., composed of infinitely long complete crystal elongated parallel to the fiber axis without defects that disconnect stress transfer in the crystal structure). Normally, real fiber structure has some structural incompletion, such as molecular ends, molecular misorientation, and density fluctuation (inhomogeneity) along the fiber axis. They play the role of heterogeneous stress distribution and reduction of fiber modulus in the fiber under tensile deformation. To carry out such analysis, meridional X-ray diffraction peaks of the PBO fiber under stress were measured and discussed. Distribution of the diffraction peak profile (half-height width of the diffraction profile) was especially considered. Change of the molecular orientation induced by external stress to the fiber was also estimated by measuring distribution of equatorial spots along the Debye ring. It was found that the distribution of the meridional diffraction spots became wider in the meridian, while the peak profile along the azimuthal direction became narrower as external stress was added for all three fibers. The degrees of response against stress came in this order: AS (180 GPa ) > HM (280 GPa) > HM+ (360 GPa). Hosemann's analysis was adopted to analyze real crystallite size and disorder parameter (g) of crystallites. It indicated that the crystalline size does not vary but the ordering of periodicity in the crystal lattice starts to loosen as applied stress to the fiber is increased. The stress seems to affect only local micro regions in the crystal structure.","PeriodicalId":16853,"journal":{"name":"Journal of Polymer Science. Part B, Polymer Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84850846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
Biodegradable fibers of poly(3‐hydroxybutyrate) produced by high‐speed melt spinning and spin drawing 采用高速熔融纺丝和纺丝拉伸法制备聚(3 -羟基丁酸酯)可生物降解纤维
3区 工程技术
Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2000-11-01 DOI: 10.1002/1099-0488(20001101)38:21<2841::AID-POLB130>3.0.CO;2-#
G. Schmack, D. Jehnichen, R. Vogel, B. Tändler
{"title":"Biodegradable fibers of poly(3‐hydroxybutyrate) produced by high‐speed melt spinning and spin drawing","authors":"G. Schmack, D. Jehnichen, R. Vogel, B. Tändler","doi":"10.1002/1099-0488(20001101)38:21<2841::AID-POLB130>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/1099-0488(20001101)38:21<2841::AID-POLB130>3.0.CO;2-#","url":null,"abstract":"The effects of high-speed melt spinning and spin drawing on the structure and resulting properties of bacterial generated poly(3-hydroxybutyrate) (PHB) fibers were investigated. The fibers were characterized by their degree of crystallinity by differential scanning calorimetry (DSC) and wide-angle X-ray scattering (WAXS), their orientation by WAXS, and the textile physical properties. The WAXS studies revealed that the fibers spun at high speeds and high draw ratios possessed orthorhombic (α modification) and hexagonal (β modification) crystals, the latter as a result of stress-induced crystallization. The fiber structures formed during these processes were fibril-like as the atomic force microscopy images demonstrated. The maximum physical break stress, the modulus, and the elongation at break observed in the fibril-like spin drawn fibers were about 330 MPa, 7.7 GPa, and 37%, respectively. The fibers obtained by a low draw ratio of 4.0 had spherulitic structures and poor textile physical properties. The PHB pellets were analyzed by their degradation during the processes of drying and spinning and by their thermal and rheological properties. © 2000 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 38: 2841–2850, 2000","PeriodicalId":16853,"journal":{"name":"Journal of Polymer Science. Part B, Polymer Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73537978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 84
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信