SYNTHESIS AND CHARACTERIZATION OF PHOTO-RESPONSIVE AND THERMOSENSITIVE POLY(N-ISOPROPYLACRYLAMIDE-co-2-[4-(4′-ETHOXYPHENYL)AZO- PHENOXY]ETHYL ACRYLATE)

LIU Xiaohua; WANG Xiaogong; LIU Deshan

doi:null

您当前的位置：

首页 >

文章列表页 >

SYNTHESIS AND CHARACTERIZATION OF PHOTO-RESPONSIVE AND THERMOSENSITIVE POLY(N-ISOPROPYLACRYLAMIDE-co-2-[4-(4′-ETHOXYPHENYL)AZO- PHENOXY]ETHYL ACRYLATE)

Research Article | 更新时间：2021-03-19

- SYNTHESIS AND CHARACTERIZATION OF PHOTO-RESPONSIVE AND THERMOSENSITIVE POLY(N-ISOPROPYLACRYLAMIDE-co-2-[4-(4′-ETHOXYPHENYL)AZO- PHENOXY]ETHYL ACRYLATE)
- Acta Polymerica Sinica Issue 6, Pages: 773-778(2001)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：20 December 2001，
扫描看全文
LIU Xiaohua, WANG Xiaogong, LIU Deshan. SYNTHESIS AND CHARACTERIZATION OF PHOTO-RESPONSIVE AND THERMOSENSITIVE POLY(N-ISOPROPYLACRYLAMIDE-co-2-[4-(4′-ETHOXYPHENYL)AZO- PHENOXY]ETHYL ACRYLATE). [J]. Acta Polymerica Sinica (6):773-778(2001)
DOI：

LIU Xiaohua, WANG Xiaogong, LIU Deshan. SYNTHESIS AND CHARACTERIZATION OF PHOTO-RESPONSIVE AND THERMOSENSITIVE POLY(N-ISOPROPYLACRYLAMIDE-co-2-[4-(4′-ETHOXYPHENYL)AZO- PHENOXY]ETHYL ACRYLATE). [J]. Acta Polymerica Sinica (6):773-778(2001) DOI：

摘要

合成了偶氮单体 2-[4-(4′-乙氧基苯基偶氮 )苯氧基 ]乙基丙烯酸酯 (EAPEA)

利用核磁共振、傅立叶红外和元素分析法对其分子结构进行了表征 .利用该单体与异丙基丙烯酰胺共聚得到一种对温度和光敏感的共聚物 .共聚物中少量的EAPEA单元能够显著降低聚异丙基丙烯酰胺 (PNIPA)的相转变温度 .当EAPEA的摩尔含量为2.94%时

相转变温度从PNIPA均聚物的31.8℃下降为22.0℃ .在波长为365nm的紫外光照射下

共聚物中的偶氮基团能够从反式构型转变为顺式构型.在紫外光下照 30s后

EAPEA摩尔含量为0.98%的聚 {异丙基丙烯酰胺-共-2-[4-(4′-乙氧基苯基偶氮)苯氧基]乙基丙烯酸酯 }的相转变温度从27.2℃上升到29.3℃.

Abstract

A novel azo monomer 2-[4-(4′-ethoxyphenyl)azophenoxy]ethyl acrylate (EAPEA) was synthesized and characterized by elemental analysis

IR and 1H-NMR spectra．Poly(N-isopropylacrylamide-co-2-[4-(4′-ethoxyphenyl)azophenoxy]ethyl acrylate) (P(NIPA-co-EAPEA)) was prepared through a free radical polymerization of NIPA and EAPEA with different molar concentration of EAPEA．Photo-responsive behavior of the copolymer in aqueous solution was observed．Small amount of EAPEA in P(NIPA-co-EAPEA)had obvious effect on the lower critical solution temperature(LCST) of PNIPA．P(NIPA-co-EAPEA) with 0.98 mol％ EAPEA in the copolymer changed the LCST from 27.2℃ to 29.3℃ after UV irradiation with λ=365 nm for 30 s．The LCST returns to its initial value when cis form recovers to trans form completely．

关键词

偶氮化合物异丙基丙烯酰胺相转变温度热敏性光敏性

Keywords

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

SYNTHESIS AND INVESTIGATION OF WELL-DEFINED AND FLUORESCENCELABELLED POLY(METHYL METHACRYLATE) BY RAFT POLYMERIZATION

SYNTHESIS AND CHARACTERIZATION OF SOLUBLE PHOTOSENSITIVE POLYIMIDES CONTAINING PHOSPHINE OXIDE MOIETIES

A STUDY OF FOLDING SEQUENCE OF TWO-DIMENSIONAL COMPACT PROTEINS

SYNTHESIS AND STUDIES ON SELF-ASSEMBLY OF PHOTO-SENSITIVE AMPHIPHILIC RANDOM COPOLYMERS

PREPARATION AND SURFACE MORPHOLOGY OF PNIPAAm-GRAFTED LAYERS ON POLYPROPYLENE FILMS

Related Author

No data

Related Institution

No data

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