| 聚对二氧环己酮/聚乙二醇多嵌段共聚物的合成与表征 |
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| 引用本文： | 牟玉蓉,石静,陈思喆,王玉忠.聚对二氧环己酮/聚乙二醇多嵌段共聚物的合成与表征[J].高分子学报,2009,0(3):203-208. |
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| 作者姓名： | 牟玉蓉 石静 陈思喆 王玉忠 |
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| 作者单位： | 四川大学化学学院,环境友好高分子材料教育部工程研究中心,成都,610064 |
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| 基金项目： | 国家杰出青年科学基金 |
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| 摘 要： | 首先合成双端羟基的聚对二氧环己酮预聚物(PPDO)和双端羧基的聚乙二醇预聚物(PEG),然后以丁二酸酐/二环己基碳二亚胺(DCC)将PPDO与PEG偶联共聚,得到PPDO/PEG多嵌段共聚物.通过1H-NMR和GPC表征了聚合物的结构和分子量.采用差示扫描量热法(DSC)和热重分析(TGA)研究了共聚物的结晶性能和热稳定性.用透析法制备了共聚物纳米粒子,并用动态光散射(DLS)表征了共聚物纳米粒子的粒径及分散度,结果表明,随着共聚物亲水链段PEG含量的增加,其纳米粒子更易形成,粒子粒径随共聚物分子量增大而增大.
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| 关 键 词： | 聚对二氧环己酮 聚乙二醇 嵌段共聚物 两亲性 纳米粒子 |
| 收稿时间： | 2008-05-23 |
SYNTHESIS AND CHARACTERIZATION OF AMPHIPHILIC MULTIBLOCK COPOLYMERS BASED ON POLY(p-DIOXANONE) AND POLY(ETHYLENE GLYCOL) |
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| MOU Yurong,SHI Jing,CHEN Sichong,WANG Yuzhong.SYNTHESIS AND CHARACTERIZATION OF AMPHIPHILIC MULTIBLOCK COPOLYMERS BASED ON POLY(p-DIOXANONE) AND POLY(ETHYLENE GLYCOL)[J].Acta Polymerica Sinica,2009,0(3):203-208. |
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| Authors: | MOU Yurong SHI Jing CHEN Sichong WANG Yuzhong |
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| Institution: | Center for Degradable and Flame-Retardant Polymeric Materials;College of Chemistry;Sichuan University;Chengdu 610064 |
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| Abstract: | In order to overcome the defects of poly(p-dioxanone)(PPDO) due to its hydrophobicity,amphiphilic PPDO/poly(ethylene glycol)(PEG) multiblock copolymers were synthesized by coupling the dihydroxyl-terminated PPDO with dicarboxylic acid-terminated PEG.The structures and molecular characteristics of the resulting PPDO/PEG multiblock copolymers were studied by~1H-NMR and GPC.The crystallization and thermal stability of the copolymers were studied using DSC and TGA.DSC analysis showed that the PPDO blocks restra... |
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| Keywords: | Poly(p-dioxanone) Poly(ethylene glycol) Multiblock copolymer Amphiphilic Nanoparticle |
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