| 结晶过程及支链对正交晶精细结构的影响 |
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| 引用本文： | 康宁,徐怡庄,翁诗甫,吴瑾光,徐端夫. 结晶过程及支链对正交晶精细结构的影响[J]. 光谱学与光谱分析, 2001, 21(1): 116-118 |
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| 作者姓名： | 康宁 徐怡庄 翁诗甫 吴瑾光 徐端夫 |
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| 作者单位： | 中科院化学所,;北京大学化学系, |
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| 基金项目： | 国家自然科学基金! (NSFC ,No 597330 60 ,598730 30 ,599530 0 1 ,5990 30 0 8),中国科学院知识创新工程重大项目! (No KJCX1 Y 0 3) |
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| 摘 要： | 用低温高分辨FTIR研究了EG系列乙烯－辛烯共聚物,通过对亚甲基rocking band的表征。结果表明,在支链不进入晶格的情况下,主链上支链的引入仍能引起晶格结构的变化,这种变化表现在正交晶格内分子链的距离的变化,二面角的变化和结晶规整程度的变化,并且发现不同的结晶过程对晶格的变化有不同的影响。
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| 关 键 词： | 正交晶 晶格 二面角 EG 分峰拟合正交晶 分峰拟合 |
| 修稿时间： | 1999-12-12 |
Effect of Crystallization and Branch on Fine Structure of Orthorhombic in Polyethylene |
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| NING Kang,Yizhuang XU,Shifu WENG,Jinguang Wu,Duanfu XU. Effect of Crystallization and Branch on Fine Structure of Orthorhombic in Polyethylene[J]. Spectroscopy and Spectral Analysis, 2001, 21(1): 116-118 |
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| Authors: | NING Kang Yizhuang XU Shifu WENG Jinguang Wu Duanfu XU |
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| Affiliation: | State Key Laboratory of Polymer Physics, Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing. |
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| Abstract: | The CH 2 rocking bands are used as a probe to monitor the crystalline behavior of polyethylene segments in a series of poly(ethylene-octene)copolymers.High resolution and cryogenic FTIR spectra reveal that different composition and/or crystalline condition of the copolymers result in significant variation on the CH 2 rocking bands including the change in peak position,band width and A 730/A 720.We conclude that side chain in the copolymer can influence the structure of the orthorhombic polyethylene crystallite althouht they can not enter the crystal lattice. |
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| Keywords: | Rocking bands Poly(ethylene-octene) copolymers FTIR |
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