| 聚乙二醇-聚二氧六环酮嵌段共聚物的合成及表征 |
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| 引用本文： | 王宏 顾忠伟. 聚乙二醇-聚二氧六环酮嵌段共聚物的合成及表征[J]. 高分子学报, 1997, 0(3): 319-323 |
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| 作者姓名： | 王宏 顾忠伟 |
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| 作者单位： | [1]北京大学高分子科学与工程系 [2]国家计划生育委员会科学技术研究所 |
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| 摘 要： | 用辛酸亚锡［Ｓｎ（Ｏｃｔ）２］作催化剂，进行了端羟基聚乙二醇（ＰＥＧ）和１，４ 二氧六环酮（ＤＯＮ）的共聚反应，得到嵌段共聚物ＰＤＯＮ ｂ ＰＥＧ ｂ ＰＤＯＮ．根据１Ｈ ＮＭＲ谱图计算结果表明共聚物组成随两组分投料比而改变．共聚物的ＤＳＣ结果表明嵌段共聚物中ＰＤＯＮ的熔点和结晶度的变化相对较小，而ＰＥＧ的熔点及结晶度均有较大降低．将ＰＥＧ引入可大大提高材料的吸水率．
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| 关 键 词： | 开环聚合，聚乙二醇 聚二氧六环酮嵌段共聚物，辛酸亚锡催化剂 |
SYNTHESIS AND CHARACTERIZATION OF POLYETHYLENEGLYCOL AND POLY(1,4 DIOXANONE) BLOCK COPOLYMERS |
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| WANG Hong, DONG Jianhua, QIU Kunyuan. SYNTHESIS AND CHARACTERIZATION OF POLYETHYLENEGLYCOL AND POLY(1,4 DIOXANONE) BLOCK COPOLYMERS[J]. Acta Polymerica Sinica, 1997, 0(3): 319-323 |
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| Authors: | WANG Hong DONG Jianhua QIU Kunyuan |
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| Abstract: | Ring opening copolymerizations of 1,4 dioxanone (DON) and polyethyleneglycol (PEG) were carried out with stannous octoate (Sn(Oct) 2) as a catalyst to prepare block copolymer (PDON b PEG b PDON).The results of 1H NMR spectrochemical analysis showed the composition of block copolymers could be adjusted by varying the feeding ratio of PEG and DON.The T m and crystallinity of PEG block in the block copolymers decreased greatly with the increase of PDON content.The water absorption percentage of block copolymer was also improved compared with that of PDON. |
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| Keywords: | Ring opening copolymerization 1 4 Dioxanone and polyethyleneglycol A B A block copolymer Stannous octoate catalyst |
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