橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2009 Vol.32 No.6 P.463-465

 橡胶技术网

可降解材料聚(二甲基硅基草酸酯)的合成及表征

岳芸　 刘宗林　 王进喜　

摘　要：以草酸与二甲基-二乙酰氧基硅烷为单体,采用熔融缩聚法合成了聚(二甲基硅基草酸酯),并通过~1H-核磁共振、差示扫描量热法、热重分析、凝胶渗透色谱对聚合物进行了表征.结果表明,聚(二甲基硅基草酸酯)的特性黏数为0.173 mL/g、数均分子量为28 496、分子量分布指数为1.38,其主链中存在结晶区,且热稳定性高.
关键词：草酸;二甲基-二乙酰氧基硅烷;熔融缩聚法;聚(二甲基硅基草酸酯);表征
分类号：TQ334.1 　文献标识码：A
文章编号：1000-1255(2009)06-0463-03

Synthesis and characterization of degradable poly(dimethylsilyloxyl oxalate)

Yue Yun（Department of Clinical Medicine, Taishan Medical University, Taian 271000, China）　 Liu Zonglin （School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China）　 Wang Jinxi（Department of Clinical Medicine, Taishan Medical University, Taian 271000, China）　

Abstract：Poly(dimethylsilyloxyl oxalate) was synthesized with oxalic acid and diacetoxydimethylsilane by melting polycondensation. The polymer was characterized by ~1H-nuclear magnetic resonance, differential scanning calorimetry, thermogravimetric analysis and gel permeation chromatography. The results showed that the intrinsic viscosity of poly(dimethylsilyloxyl oxalate ) was 0.173 mL/g, number-average molecular meight and its distribution was 28 496, 1.38, respectively. The crystalline region existed in the main chain of poly(dimethylsilyloxyl oxalate), and the thermal stability was well.
Keywords：oxalic acid; diacetoxydimethylsilane; melting polycondensation; poly(dimethylsilyloxyl oxalate ); characterization

基金项目：国家自然科学基金资助项目(20274022).
作者简介：岳芸(1975-),女,硕士.已发表论文8篇.
作者单位：岳芸（泰山医学院,临床医学系,山东,泰安271000）　
　　　　　刘宗林（山东大学,化学与化工学院,山东,济南250100）　
　　　　　王进喜（泰山医学院,临床医学系,山东,泰安271000）　

参考文献：

[1]Gitto S P,Wooley K L.Poly(silyl ester)s:A new family of hydrolytically-degradable polymers with attunable stabilities[J].Macromolecules,1995,28:8887-8889.
[2]Wang Min,Weinberg J M,Wooley K L.Synthesis of poly(silyl ester)s via AB monomer systems[J].Macromolecules,2000,33(3):734-742.
[3]Wang Min,Weinberg J M,Wooley K L.Geminal poly(silyl ester)s:Highly labile degradable polymers[J].Polym Chem,1999,37(18):3606-3613.
[4]Weinberg J M,Gitto S P,Wooley K L.Synthesis and characterization of degradable poly(silyl ester)s[J].Macromolecules,1998,31(1):15-21.
[5]Wang Min,Weinberg J M,Wooley K L.Synthesis,characterization and degradation of poly(silyl ester)s[J].Macromolecules,1998,31(22):7606-7612.
[6]Weinberg J M,Wooley K L.Transsilylation as a mild and versatile method for the preparation of poly(silyl ester)s:Reactivity correlated with ~(29)Si-NMR resonance frequencies[J].J Organomet Chem,1997(542):235-240.
[7]Weinberg J M,Wooley K L.Investigation of a transsilylation reaction for the preparation of poly(silyl ester)s[J].Polymer Reprint,1996,37(1):493-494.
[8]Han Nianfeng,Lin Zonglin,Jin Liqiang,et al.Preparation and characterization of poly(silyl ester)s containing 2,2-bis(p-dimethyl-siloxy-phenyl)propane units in the polymer backbone[J].J Appl Polym Sci,2006,101(3):1937-1942.
[9]周卫清,周志伟,刘峰.乙酰氧基硅烷收率和纯度的研究[J].有机硅材料及应用,1998(3):6-8.

收稿日期：2008年11月17日

修稿日期：2009年7月19日

出版日期：2009年11月15日