| 结晶-非晶共混体系的结晶行为研究——PEO/PMMA与PEO/PVA共混物 |
| |
| 引用本文： | 李玄,王盈康,杨扬.结晶-非晶共混体系的结晶行为研究——PEO/PMMA与PEO/PVA共混物[J].高分子学报,1987,0(1):75-80. |
| |
| 作者姓名： | 李玄 王盈康 杨扬 |
| |
| 作者单位： | 中国科学院化学研究所 北京
(李玄)，北京大学化学系 北京
(王盈康)，北京大学化学系 北京(杨扬) |
| |
| 摘 要： | 用DSC和傅里叶红外(FTIR)光谱表征PEO/PMMA和PEO/PVA共混体系的结晶行为。发现PEO/PVA体系的结晶度与其组成的变化是一致的;而PEO/PMMA体系的结晶度随非晶组分增加而下降的速度,从与组成变化一致到比后者快,但又随时间而改变。对此结晶/非晶共混体系的结晶度随组成和时间而变化的现象,可用体系的玻璃化转变温度(T_g)来解释。
|
| 关 键 词： | 聚环氧乙烷 聚甲基丙烯酸甲酯 聚乙酸乙烯酯 共混物 结晶度 玻璃化转变温度 示差扫描量热 傅里叶变换红外光谱 |
| 收稿时间： | 1984-12-25 |
STUDIES OF THE CRYSTALLIZATION BEHAVIOR OF CRYSTALLINE-AMOPHOUS POLYMER BLENDS- PEO/PMMA AND PEO/PVA BLENDS |
| |
| LI Xuan,WANG Ying-kang,YANG Yang.STUDIES OF THE CRYSTALLIZATION BEHAVIOR OF CRYSTALLINE-AMOPHOUS POLYMER BLENDS- PEO/PMMA AND PEO/PVA BLENDS[J].Acta Polymerica Sinica,1987,0(1):75-80. |
| |
| Authors: | LI Xuan WANG Ying-kang YANG Yang |
| |
| Institution: | Institute of Chemistry; Academia Sinica; Beijing; Department of Chemistry; Peking University; Beijing |
| |
| Abstract: | The crystallization process of polyethylene oxide (PEO)/polymethyl methacrylate (PMMA) and PEO/polyvinyl acetate (PVA) blends has been characterized by Fourier Transform Infrared (FUR) spectra in conjuction with DSC. The crystallinity of PEO varies consistently with PEO content in PEO/PVA blends and the PEO/PMMA blends containing 50% or less PMMA. For the PEO/PMMA blends containing 60% or more PMMA, the crystallinity of PEO decreases more than PEO content but develops with crystallization time. These results can be explained in terms of difference between the crystallization temperature and Tg values of the blends as a function of content of non-crystalline component. |
| |
| Keywords: | Polyethylene oxide (PEO) Polymethylmethacrylate(PMMA) Polyvinyl a-cetate(PVA) Blends Crystallinity Glass-transition temperalure(Tg) Differential scanning ca-lorimetry (DSC) Non-crystalline Fourier transform infrared (FTIR) |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《高分子学报》浏览原始摘要信息 |
| 点击此处可从《高分子学报》下载免费的PDF全文 |
