The crystal structure and drawing-induced polymorphism in poly(aryl ether ketone)s .2. Poly(ether ether ketone ketone), PEEKK
文献类型：期刊论文
| 作者 | Wang SG ; Wang JZ ; Liu TX ; Mo ZS ; Zhang HF ; Yang DC ; Wu ZW |
| 刊名 | macromolecular chemistry and physics
 |
| 出版日期 | 1997 |
| 卷号 | 198期号:4页码:969-982 |
| 关键词 | MORPHOLOGY CRYSTALLIZATION COPOLYMERS BEHAVIOR POLYMERS LINKS PEK |
| ISSN号 | 1022-1352 |
| 中文摘要 | the crystal structure, morphology and polymorphism induced by uniaxial drawing of poly(ether ether ketone ketone) [peekk] have been studied by transmission electron microscopy (tem), electron diffraction (ed) and wide angle x-ray diffraction (waxd). on the basis of waxd and ed patterns,the crystal structure of unoriented peekk is determined to have two-chain orthorhombic packing with unit cell parameters of a 0.772 nm, b = 0.600 nm, c = 1.004 nm (form i), a stress-induced crystal modification (form ii) is identified and found to possess a two-chain orthorhombic lattice with unit cell dimensions of a = 0.461 nm, b = 1.074 nm, c = 1.080 nm. the 7.5% increase in c-axis dimension for form ii is attributed to an overextended chain conformation, arising from extensional deformation during uniaxial drawing and fixed ''in-situ'' through strain-induced crystallization. the average ether-ketone bridge bond angles in form ii crystal are determined to be 148.9 degrees by using standard bond lengths. the crystal morphology of peekk bears a great similarity to that of peek. the crystals grow in the form of spherulites and have the b-axis of unit cell radial. the effects of draw rate on strain-induced crystallization and induction of form ii structure are also discussed. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| 公开日期 | 2010-12-22 ; 2011-06-09 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/24309]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang SG,Wang JZ,Liu TX,et al. The crystal structure and drawing-induced polymorphism in poly(aryl ether ketone)s .2. Poly(ether ether ketone ketone), PEEKK[J]. macromolecular chemistry and physics,1997,198(4):969-982. |
| APA | Wang SG.,Wang JZ.,Liu TX.,Mo ZS.,Zhang HF.,...&Wu ZW.(1997).The crystal structure and drawing-induced polymorphism in poly(aryl ether ketone)s .2. Poly(ether ether ketone ketone), PEEKK.macromolecular chemistry and physics,198(4),969-982. |
| MLA | Wang SG,et al."The crystal structure and drawing-induced polymorphism in poly(aryl ether ketone)s .2. Poly(ether ether ketone ketone), PEEKK".macromolecular chemistry and physics 198.4(1997):969-982. |
入库方式： OAI收割
来源：长春应用化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。