| 粉末X射线衍射法对酰胺酸-酰亚胺共聚物晶体结构的研究 |
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| 引用本文： | 翟燕,郭灵虹,顾宜. 粉末X射线衍射法对酰胺酸-酰亚胺共聚物晶体结构的研究[J]. 高分子材料科学与工程, 2007, 23(4): 144-147 |
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| 作者姓名： | 翟燕 郭灵虹 顾宜 |
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| 作者单位： | 高分子材料工程国家重点实验室,四川大学高分子科学与工程学院,四川,成都,610065;中北大学分校,山西,太原,030008;四川大学分析测试中心,四川,成都,610065;高分子材料工程国家重点实验室,四川大学高分子科学与工程学院,四川,成都,610065 |
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| 摘 要： | 通过粉末X射线衍射仪对不同工艺条件获得的PMDA-ODA型酰胺酸-酰亚胺共聚物(PA-I)粉末的XRD图谱进行分析表明,PA-I粉末为半晶粉末,使用消除无定型鼓包的XRD图谱指标化,计算出晶体结构为三斜晶系,空间群为P1。采用Pawley全谱精修晶体结构,结果表明,随着酰亚胺化时间的延长和酰亚胺化温度的提高,PMDA-ODA的晶胞参数、微晶尺寸和晶格畸变都呈现规律性变化。
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| 关 键 词： | 聚酰亚胺 晶体结构 结构参数 |
| 文章编号： | 1000-7555（2007）04-0144-04 |
| 修稿时间： | 2007-01-16 |
The Study on the Crystalline Structure in Copolyamic Acid-Imide by X-Powder Ray Diffractometer |
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| ZHAI Yan,GUO Ling-hong,GU Yi. The Study on the Crystalline Structure in Copolyamic Acid-Imide by X-Powder Ray Diffractometer[J]. Polymer Materials Science & Engineering, 2007, 23(4): 144-147 |
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| Authors: | ZHAI Yan GUO Ling-hong GU Yi |
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| Abstract: | Copolyamic acid-imide(PA-I) powders with different imidization degree were prepared in solution by thermal imidization of polyamic acid(PAA) synthesized from pyromellitic dianhydride(PMDA) and 4,4'-oxydianiline(ODA) on different reaction conditions.X-ray diffraction(XRD) results of these powders indicated that they are semi-crystalline.After all of amorphous PA-I bumps in XRD patterns were deducted,reflections of crystalline PA-I were used to index and calculate crystalline structure.The structure is triclinic and space group is P1.It is concluded that unit cell parameters,crystallite size and microstrain of PAI powders change regularly as imidization time prolonged or imidization temperature rose by Pawley refinement of XRD patterns of crystalline portion. |
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| Keywords: | polyimide crystalline structure structure parameters |
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