C_(60) FULLERENE POLYMERS

机译：C_（60）富勒烯聚合物

获取原文

获取原文并翻译 | 示例

页面导航

摘要
著录项
相似文献
相关主题

摘要

TEM investigations were performed on high temperature and pressure C_(60) fullerene. A mixed phase of alternating rhombohedral lamellae and tetragonal domains is formed. At higher temperatures 900-1173 K graphitic 'hard' carbon phases formed, via an inter-polymer interface instability and/or shear mechanism. This phase exhibited a hardness of 10-15 GPa and a high degree of elastic recovery under indentation. The kinetics of graphitisation were slow and proceeded via cross-linked intermediates, which influenced the hardness markedly, up to 33.5 GPa. In-situ investigations into the P/T field of C_(60) were performed using energy dispersive X-Ray diffraction techniques. The P/T history and pressure isotropy were investigated to confirm and optimise conditions for 3-D polymer formation. Formation of 3-D polymers has been carried out in-situ, however the reclaimed sample failed to live up to hardness expectations, due to depolymerisation problems on pressure release. Isotropy in the pressure field promoted formation and retention of the 3-D FCC structure. The existence of a series of ferromagnetic rhombohedral C_(60) polymers has been realised. This property has been shown to occur over a range of preparation temperatures at 9 GPa. The structure is shown to be crystalline in nature containing whole undamaged Buckyballs. Formation of radicals is most likely due to thermally activated shearing of the bridging bond resulting in dangling bond formation.

机译：TEM研究是在高温高压C_（60）富勒烯下进行的。形成了交替的菱面体薄片和四边形畴的混合相。在更高的温度下，900- 1173 K的石墨“硬”碳相通过聚合物间界面的不稳定性和/或剪切机制形成。该相表现出10-15 GPa的硬度和压痕下的高弹性回复度。石墨化的动力学很慢，并且通过交联的中间体进行，这显着影响了硬度，高达33.5 GPa。使用能量色散X射线衍射技术对C_（60）的P / T场进行了原位研究。研究了P / T历史和压力各向同性，以确认和优化3-D聚合物形成的条件。 3-D聚合物的形成是在原位进行的，但是由于压力释放引起的解聚问题，回收的样品未能达到预期的硬度。压力场的各向同性促进了3-D FCC结构的形成和保持。已经认识到一系列铁磁菱形C_（60）聚合物的存在。已经表明，该性质在9 GPa的制备温度范围内发生。该结构显示为晶体，包含完整未损坏的Buckyball。自由基的形成最可能是由于桥键的热活化剪切导致悬空键的形成。

著录项

来源
《NATO Advanced Research Workshop on Nanostructured Materials and Coatings for Biomedical and Sensor Applications Aug 4-8, 2002 Kyiv, Ukraine》|2002年|p.239-248|共10页
会议地点 Kyiv(UA)
作者
R. A. WOOD; M. H. LEWIS; M. R. LEES; S. M. BENNINGTON; M. G. CAIN; N. KITAMURA;
展开▼
作者单位

Centre for Advanced Materials, Department of Physics, University of Warwick, Coventry, CV4 7AL, UK;

展开▼
会议组织
原文格式 PDF
正文语种 eng
中图分类基础医学;
关键词

相似文献

外文文献
中文文献
专利

1. Bromination of [60]Fullerene. II. Crystal and Molecular Structure of [60]Fullerene Bromides, C_(60)Br_6, C_(60)Br_8, and C_(60)Br_(24) [J] . Sergei I. Troyanov, Pavel A. Troshin, Olga V. Boltalina, Fullerenes, nanotubes, and carbon nanostructures . 2003,第1期

机译：[60]富勒烯的溴化。二。 [60]富勒烯溴化物，C_（60）Br_6，C_（60）Br_8和C_（60）Br_（24）的晶体和分子结构
2. Polymeric fullerene oxide (fullerene ozopolymers) produced by prolonged ozonation of C_(60) and C_(70) fullerenes [J] . Franco Cataldo Carbon: An International Journal Sponsored by the American Carbon Society . 2002,第9期

机译：通过长时间臭氧化C_（60）和C_（70）富勒烯而产生的聚合富勒烯氧化物（富勒烯含氧聚合物）
3. Characterization of reactions of fullerene C_(60) with bromine. Crystal structures of bromofullerenes C_(60)Br_6,C_(60)Br_6 centre dot CS_2, C_(60)Br_8 centre dot CHBr_3 centre dot 2Br_2,and C_(60)Br_(24) centre dot C_6H_4C1_2 centre dot Br_2 [J] . P.A.Troshin, E.Kemnitz, S.I.Troyanov Russian Chemical Bulletin . 2004,第12期

机译：富勒烯C_（60）与溴的反应特征。溴富勒烯C_（60）Br_6，C_（60）Br_6中心点CS_2，C_（60）Br_8中心点CHBr_3中心点2Br_2和C_（60）Br_（24）中心点C_6H_4C1_2中心点Br_2的晶体结构
4. Plasmochemical synthesis fullerenes C_(60) and C_(70) at atmospheric pressure and the effect of fullerenes on hydration of Portland cement [C] . N N Smirnyagina, B O Tsyrenov, D E Dasheev, International Conference "Gas Discharge Plasmas and Their Applications" . 2020

机译：血浆化学合成富勒烯C_（60）和C_（70）在大气压下，富勒烯对波特兰水泥水合的影响
5. The specific heat of C(70) fullerene, nanotubes, photo-polymerized C(60) fullerene, potassium doped fullerenes, and rubidium doped fullerenes. [D] . Budraa, Nasser Khalifa. 1996

机译：C（70）富勒烯，纳米管，光聚合的C（60）富勒烯，钾掺杂的富勒烯和rub掺杂的富勒烯的比热。
6. Porous Polymer Monoliths Functionalized through Copolymerization of C60 Fullerene-Containing Methacrylate Monomer for Highly Efficient Separations of Small Molecules [O] . Stuart D. Chambers, Thomas W. Holcombe, Frantisek Svec, -1

机译：通过含C60富勒烯的甲基丙烯酸酯单体的共聚官能化的多孔聚合物整料用于高效分离小分子
7. Raman scattering in C_{60} and C_{48}N_{12} aza-fullerene: First-principles study [O] . Xie, Rui-Hua, Bryant, Garnett W., Smith Jr, Vedene H. 2003

机译：C_ {60}和C_ {48} N_ {12}氮杂富勒烯中的拉曼散射：第一原理研究

C_(60) FULLERENE POLYMERS

摘要

著录项

相似文献

相关主题

期刊订阅