STEREOSPECIFIC ANIONIC POLYMERIZATION OF STYRENE IN THE PRESENCE OF BARIUM DODECYL BENZENE SULFONATE

SHI Fengtian; LU Jianmin; HAN Bingyong; LIU Li; YANG Wantai

doi:10.3724/SP.J.1105.2010.09289

您当前的位置：

首页 >

文章列表页 >

STEREOSPECIFIC ANIONIC POLYMERIZATION OF STYRENE IN THE PRESENCE OF BARIUM DODECYL BENZENE SULFONATE

Research Article | 更新时间：2021-03-19

- STEREOSPECIFIC ANIONIC POLYMERIZATION OF STYRENE IN THE PRESENCE OF BARIUM DODECYL BENZENE SULFONATE
- Acta Polymerica Sinica Issue 6, Pages: 734-738(2010)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.3724/SP.J.1105.2010.09289
  CLC：
- Published：20 June 2010，
扫描看全文
SHI Fengtian, LU Jianmin, HAN Bingyong, LIU Li, YANG Wantai. STEREOSPECIFIC ANIONIC POLYMERIZATION OF STYRENE IN THE PRESENCE OF BARIUM DODECYL BENZENE SULFONATE. [J]. Acta Polymerica Sinica (6):734-738(2010)
DOI：

SHI Fengtian, LU Jianmin, HAN Bingyong, LIU Li, YANG Wantai. STEREOSPECIFIC ANIONIC POLYMERIZATION OF STYRENE IN THE PRESENCE OF BARIUM DODECYL BENZENE SULFONATE. [J]. Acta Polymerica Sinica (6):734-738(2010) DOI： 10.3724/SP.J.1105.2010.09289.

摘要

以正丁基锂(n-BuLi)为引发剂，环已烷为溶剂，通过添加十二烷基苯磺酸钡/四氢呋喃(SDBB/THF)，对苯乙烯负离子聚合进行了研究.该体系可在60℃聚合得到立构规整性聚苯乙烯，其丁酮不溶物含量可达80%左右.13C-NMR表征结果显示其微观序列组成以等规结构为主，三元组mm和等规五元组mmmm含量可达57%和45%；DSC谱图中不仅有聚苯乙烯玻璃化温度(100℃)，而且在211℃有一熔融峰.GPC结果表明，实测分子量与设计分子量差别较大，且分子量分布较宽.

Abstract

The anionic polymerization of styrene has been studied using dodecyl benzene sulfonic acid barium salt(SDBB)/tetrahydrofuran as ligands

nBuLi as initiator in cyclohexane.The results showed the remarkable effect of SDBB on polymerization. With increasing ［SDBB］/［Li］

the polymerization rate and monomer conversion decreased

and the gel formed gradually. The polymerization was completely retarded at ［SDBB］/［Li］ ≥ 0.8 at 60℃.The stereospecific polystyrene was obtained at 60℃

and its weight content of methyl ethyl ketone (MEK) insoluble fraction reached about 80%.The 13CNMR spectra indicated that its microstructure sequence was isotacticrich polystyrene.The contents of mm triad and mmmm pentad were equal to 57% and 45%

respectively.The Tg of 100℃ and melting temperature at 211℃ were observed in DSC curves.The isotactic content of MEK soluble fraction was also higher than that of PS obtained by conventional anionic polymerization.The GPC results displayed an obvious difference between the theoretical molecular weight and experimental molecular weight.It also indicated a much broader polydispersity of the experimental sample.

关键词

负离子聚合等规聚苯乙烯立构规整性十二烷基苯磺酸钡

Keywords

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Tri-block Terpolymers with Different Sequences Synthesized by Combination of Anionic and RAFT Polymerizations

SYNTHESIS AND HELIXSENSESELECTIVE POLYMERIZATION OF CHIRAL VINYL BIPHENYL MONOMERS

SYNTHESIS AND CHIROPTICAL PROPERTY OF N-(o-OXAZOLINEPHENYL) METHACRYLAMIDE BASED OPTICACLLY ACTIVE POLYMERS

THE STRUCTURE AND PROPERTIES OF AN in situ BLEND COMPOSED OF POLYAMIDE 6 AND A NON-CRYSTALLIZABLE SEMI-AROMATIC POLYAMIDE COPOLYMER

SYNTHESIS OF ISOTACTIC POLYSTYRENE WITH MgCl2 SUPPORTED TITANIUM CATALYST AND STUDIES ON ITS MOLECULAR WEIGHT DISTRIBUTION

Related Author

No data

Related Institution

The State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University

Postal code：100190
Tel：010-62588927 Email：gfzxb@iccas.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备05002797号-8 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰