| 含间位取代苯基聚醚酮酮的结晶与晶体结构研究 |
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| 引用本文： | 柯扬船,杨德才.含间位取代苯基聚醚酮酮的结晶与晶体结构研究[J].高分子学报,1997(2):177-182. |
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| 作者姓名： | 柯扬船 杨德才 |
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| 作者单位： | 吉林大学化学系，中国科学院长春应用化学研究所高分子物理开放实验室 |
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| 基金项目： | 中国科学院高分子物理联合开放实验室资助 |
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| 摘 要： | 通过差示扫描法（ＤＳＣ）及广角Ｘ 射线衍射（ＷＡＸＤ）技术研究了含间位取代苯基聚醚酮酮（ＰＥＫｍＫ）的结晶行为与晶体结构．Ｘ 射线结果表明，从熔融态及玻璃态结晶时，ＰＥＫｍＫ只有一种晶型，其晶胞参数为：ａ＝０７６７２ｎｍ，ｂ＝０６１４９ｎｍ，ｃ＝１５９９ｎｍ．ＤＳＣ结果表明，ＰＥＫｍＫ热分析曲线都出现了熔融双峰，低熔融峰（ＤＯＷｎ）热焓占总热焓４～７％，它源于初始结晶形成的同一晶型不同厚度片晶．低熔融峰在２５０℃以上结晶转化成高熔融峰（Ｉ），ＰＥＫｍＫ平衡熔点为２９５℃
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| 关 键 词： | 含间位取代苯基聚醚酮酮，熔融双峰，热分析，X 射线衍射 |
CRYSTALLIZATION AND CRYSTAL STRUCTURE FOR POLY (ARYL ETHER KETONE) CONTAINING META PHENYL LINKS |
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| KE Yangchuan,WU Zhongwen,ZHENG Yubin.CRYSTALLIZATION AND CRYSTAL STRUCTURE FOR POLY (ARYL ETHER KETONE) CONTAINING META PHENYL LINKS[J].Acta Polymerica Sinica,1997(2):177-182. |
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| Authors: | KE Yangchuan WU Zhongwen ZHENG Yubin |
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| Abstract: | By means of DSC and WAXD methods,Crystallization and crystal structure of poly(aryl ether ketone)s containing meta phenyl links were studied.WAXD results showed that crystallized from both glassy and melting state,only one crystal form of PEKMK was found with unit cell parameters of a=0 767 2nm, b =0 6149nm,and c =1 599nm.DSC results from different crystallization showed that double melting peaks (lower and upper peaks)exits.Lower peak had only 4% to 7% of all heat of fusion which originated from random lamellae produced at low crystallization temperature.At high crystallization temperature,lower peak transformed into upper peak with equillibrium melting point of 295℃. |
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| Keywords: | Poly(aryl ether ketone)s containing meta phenyl link Double melting peaks Differential scanning calorimetry(DSC) analysis Wide Angle X ray Diffraction(WAXD) |
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