| 乙丙共聚物及其共混物晶型探讨 |
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| 引用本文： | 张宏放,莫志深,李三喜,庞德仁,黄葆同.乙丙共聚物及其共混物晶型探讨[J].高分子学报,1990,0(4):453-458. |
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| 作者姓名： | 张宏放 莫志深 李三喜 庞德仁 黄葆同 |
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| 作者单位： | 中国科学院长春应用化学研究所高分子物理开放实验室，中国科学院长春应用化学研究所高分子物理开放实验室，中国科学院长春应用化学研究所高分子物理开放实验室，中国科学院长春应用化学研究所高分子物理开放实验室，中国科学院长春应用化学研究所高分子物理开放实验室 长春 130022，长春 130022，长春 130022，长春 130022，长春 130022 |
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| 摘 要： | 用广角X-射线衍射(WAXD)和偏光显微镜(PLM)方法,研究了具有乙丙长序列乙丙共聚物及其共混物,发现通过熔融慢冷结晶样品,C_3含量在30mol％以上,衍射角2θ=20°处出现了属于γ-PP晶型的(140),(130)晶面衍射。含有乙丙长序列链结构的乙丙共聚物及共混物属(α+γ)混晶结构;含乙丙长序列的EPR以γ-相为主,嵌段物和共混物则以α-PP为主,形成γ-PP结构的必要条件是含有乙丙长序列链结构样品熔融慢冷结晶。
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| 关 键 词： | 乙丙共聚物 α-γ相转变 嵌段物和共混物 广角X-射线衍射 |
| 收稿时间： | 1989-03-07 |
A STUDY ON α-γ TRANSFORMATION OF ETHYLENE-PROPYLENE COPOLYMERS AND MIXTURES |
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| ZHANG Hong-fang,MO Zhi-shen,LI San-xi,PANG De-ren,HUANG Bao-tong.A STUDY ON α-γ TRANSFORMATION OF ETHYLENE-PROPYLENE COPOLYMERS AND MIXTURES[J].Acta Polymerica Sinica,1990,0(4):453-458. |
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| Authors: | ZHANG Hong-fang MO Zhi-shen LI San-xi PANG De-ren HUANG Bao-tong |
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| Institution: | Laboratory of Polymer Physics; Changchun Institute of Applied Chemistry; Academia Sinica; Changchun |
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| Abstract: | Ethylene (E)-Propylene (P) copolymers and mixtures with long E-P sequence structures were investigated using WAXD and PLM methods. As the content of Cs reached more than 30 mol %, the (140), (130) crystal planes appear at 29 = 20 in X-ray diffraction patterns of me-Itcrystallized samples. Planes of (140), (130) are the characteristics of γ-form, which originate from (a +γ) form in E-P copolymers.γ-form is mainly observed for long E-P sequence copolymers as slow cooling, but a-form is mainly for blocks and mixtures. |
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| Keywords: | Ethylene-Propylene copolymers a-y transfomation block and blend WAXD |
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